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46827 Commits

Author SHA1 Message Date
Russ Cox
0ced54062e [dev.regabi] cmd/compile: split out package objw [generated]
Object file writing routines are used not just at the end
of the compilation but also during static data layout in walk.
Split them into their own package.

[git-generate]

cd src/cmd/compile/internal/gc
rf '
	# Move bit vector to new package bitvec
	mv bvec.n bvec.N
	mv bvec.b bvec.B
	mv bvec BitVec
	mv bvalloc New
	mv bvbulkalloc NewBulk
	mv bulkBvec.next bulkBvec.Next
	mv bulkBvec Bulk
	mv H0 h0
	mv Hp hp

	# Leave bvecSet and bitmap hashes behind - not needed as broadly.
	mv bvecSet.extractUniqe bvecSet.extractUnique
	mv h0 bvecSet bvecSet.grow bvecSet.add \
		bvecSet.extractUnique hashbitmap bvset.go

	mv bv.go cmd/compile/internal/bitvec

	ex . ../arm ../arm64 ../mips ../mips64 ../ppc64 ../s390x ../riscv64 {
		import "cmd/internal/obj"
		var a *obj.Addr
		var i int64
		Addrconst(a, i) -> a.SetConst(i)
		var p, to *obj.Prog
		Patch(p, to) -> p.To.SetTarget(to)
	}
	rm Addrconst Patch

	# Move object-writing API to new package objw
	mv duint8 Objw_Uint8
	mv duint16 Objw_Uint16
	mv duint32 Objw_Uint32
	mv duintptr Objw_Uintptr
	mv duintxx Objw_UintN
	mv dsymptr Objw_SymPtr
	mv dsymptrOff Objw_SymPtrOff
	mv dsymptrWeakOff Objw_SymPtrWeakOff
	mv ggloblsym Objw_Global
	mv dbvec Objw_BitVec
	mv newProgs NewProgs
	mv Progs.clearp Progs.Clear
	mv Progs.settext Progs.SetText
	mv Progs.next Progs.Next
	mv Progs.pc Progs.PC
	mv Progs.pos Progs.Pos
	mv Progs.curfn Progs.CurFunc
	mv Progs.progcache Progs.Cache
	mv Progs.cacheidx Progs.CacheIndex
	mv Progs.nextLive Progs.NextLive
	mv Progs.prevLive Progs.PrevLive
	mv Progs.Appendpp Progs.Append
	mv LivenessIndex.stackMapIndex LivenessIndex.StackMapIndex
	mv LivenessIndex.isUnsafePoint LivenessIndex.IsUnsafePoint

	mv Objw_Uint8 Objw_Uint16 Objw_Uint32 Objw_Uintptr Objw_UintN \
		Objw_SymPtr Objw_SymPtrOff Objw_SymPtrWeakOff Objw_Global \
		Objw_BitVec \
		objw.go
	mv sharedProgArray NewProgs Progs \
		LivenessIndex StackMapDontCare \
		LivenessDontCare LivenessIndex.StackMapValid \
		Progs.NewProg Progs.Flush Progs.Free Progs.Prog Progs.Clear Progs.Append Progs.SetText \
		prog.go
	mv prog.go objw.go cmd/compile/internal/objw

	# Move ggloblnod to obj with the rest of the non-objw higher-level writing.
	mv ggloblnod obj.go
'

cd ../objw
rf '
	mv Objw_Uint8 Uint8
	mv Objw_Uint16 Uint16
	mv Objw_Uint32 Uint32
	mv Objw_Uintptr Uintptr
	mv Objw_UintN UintN
	mv Objw_SymPtr SymPtr
	mv Objw_SymPtrOff SymPtrOff
	mv Objw_SymPtrWeakOff SymPtrWeakOff
	mv Objw_Global Global
	mv Objw_BitVec BitVec
'

Change-Id: I2b87085aa788564fb322e9c55bddd73347b4d5fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/279310
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:47 +00:00
Russ Cox
575fd6ff0a [dev.regabi] cmd/compile: split out package inline [generated]
[git-generate]

cd src/cmd/compile/internal/gc
rf '
	mv numNonClosures inl.go
	mv inlFlood Inline_Flood
	mv inlcalls InlineCalls
	mv devirtualize Devirtualize
	mv caninl CanInline

	mv inl.go cmd/compile/internal/inline
'

Change-Id: Iee1f5b1e82d5cea6be4ecd91e6920500810f21de
Reviewed-on: https://go-review.googlesource.com/c/go/+/279309
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:41 +00:00
Russ Cox
0256ba99a8 [dev.regabi] cmd/compile: split up typecheck1 [generated]
typecheck1 is the largest non-machine-generated function in the compiler.
weighing in at 1,747 lines. Since we are destroying the git blame history
anyway, now is a good time to split each different case into its own function,
making future work on this function more manageable.

[git-generate]
cd src/cmd/compile/internal/typecheck
rf '
	# Remove tracing print from typecheck1 - the one in typecheck is fine.
	# Removing it lets us remove the named result.
	# That lets all the cut-out functions not have named results.
	rm typecheck.go:/^func typecheck1/+0,/^func typecheck1/+4
	sub typecheck.go:/^func typecheck1/+/\(res ir\.Node\)/ ir.Node

	mv typecheckselect tcSelect
	mv typecheckswitch tcSwitch
	mv typecheckrange tcRange
	mv typecheckfunc tcFunc
	mv checkdefergo tcGoDefer
	mv typecheckclosure tcClosure
	mv check typecheck
	mv typecheckcomplit tcCompLit
	mv typecheckas tcAssign
	mv typecheckas2 tcAssignList
	mv typecheckpartialcall tcCallPart
	mv typecheckExprSwitch tcSwitchExpr
	mv typecheckTypeSwitch tcSwitchType

	mv typecheck1:/^\tcase ir.ORETURN:/+2,/^\tcase /-2 tcReturn
	add typecheck.go:/^func tcReturn/-0 \
		// tcReturn typechecks an ORETURN node.
	mv typecheck1:/^\tcase ir.OIF:/+2,/^\tcase /-2 tcIf
	add typecheck.go:/^func tcIf/-0 \
		// tcIf typechecks an OIF node.
	mv typecheck1:/^\tcase ir.OFOR,/+2,/^\tcase /-2 tcFor
	add typecheck.go:/^func tcFor/-0 \
		// tcFor typechecks an OFOR node.
	mv typecheck1:/^\tcase ir.OSPTR:/+2,/^\tcase /-2 tcSPtr
	add typecheck.go:/^func tcSPtr/-0 \
		// tcSPtr typechecks an OSPTR node.
	mv typecheck1:/^\tcase ir.OITAB:/+2,/^\tcase /-2 tcITab
	add typecheck.go:/^func tcITab/-0 \
		// tcITab typechecks an OITAB node.
	mv typecheck1:/^\tcase ir.ORECOVER:/+2,/^\tcase /-2 tcRecover
	add typecheck.go:/^func tcRecover/-0 \
		// tcRecover typechecks an ORECOVER node.
	mv typecheck1:/^\tcase ir.OPANIC:/+2,/^\tcase /-2 tcPanic
	add typecheck.go:/^func tcPanic/-0 \
		// tcPanic typechecks an OPANIC node.
	mv typecheck1:/^\tcase ir.OPRINT,/+2,/^\tcase /-2 tcPrint
	add typecheck.go:/^func tcPrint/-0 \
		// tcPrint typechecks an OPRINT or OPRINTN node.
	mv typecheck1:/^\tcase ir.ONEW:/+2,/^\tcase /-2 tcNew
	add typecheck.go:/^func tcNew/-0 \
		// tcNew typechecks an ONEW node.
	mv typecheck1:/^\tcase ir.OMAKE:/+2,/^\tcase /-2 tcMake
	add typecheck.go:/^func tcMake/-0 \
		// tcMake typechecks an OMAKE node.
	mv typecheck1:/^\tcase ir.OCONV:/+2,/^\tcase /-2 tcConv
	add typecheck.go:/^func tcConv/-0 \
		// tcConv typechecks an OCONV node.
	mv typecheck1:/^\tcase ir.OCOPY:/+2,/^\tcase /-2 tcCopy
	add typecheck.go:/^func tcCopy/-0 \
		// tcCopy typechecks an OCOPY node.
	mv typecheck1:/^\tcase ir.OAPPEND:/+2,/^\tcase /-2 tcAppend
	add typecheck.go:/^func tcAppend/-0 \
		// tcAppend typechecks an OAPPEND node.
	mv typecheck1:/^\tcase ir.ODELETE:/+2,/^\tcase /-2 tcDelete
	add typecheck.go:/^func tcDelete/-0 \
		// tcDelete typechecks an ODELETE node.
	mv typecheck1:/^\tcase ir.OCLOSE:/+2,/^\tcase /-2 tcClose
	add typecheck.go:/^func tcClose/-0 \
		// tcClose typechecks an OCLOSE node.
	mv typecheck1:/^\tcase ir.OCOMPLEX:/+2,/^\tcase /-2 tcComplex
	add typecheck.go:/^func tcComplex/-0 \
		// tcComplex typechecks an OCOMPLEX node.
	mv typecheck1:/^\tcase ir.OREAL,/+2,/^\tcase /-2 tcRealImag
	add typecheck.go:/^func tcRealImag/-0 \
		// tcRealImag typechecks an OREAL or OIMAG node.
	mv typecheck1:/^\tcase ir.OCAP,/+2,/^\tcase /-2 tcLenCap
	add typecheck.go:/^func tcLenCap/-0 \
		// tcLenCap typechecks an OLEN or OCAP node.
	mv typecheck1:/^\tcase ir.OCALL:/+2,/^\tcase /-2 tcCall
	add typecheck.go:/^func tcCall/-0 \
		// tcCall typechecks an OCALL node.
	mv typecheck1:/^\tcase ir.OSLICE,/+2,/^\tcase /-3 tcSlice
	add typecheck.go:/^func tcSlice/-0 \
		// tcSlice typechecks an OSLICE or OSLICE3 node.
	# move type assertion above comment
	mv typecheck1:/^\tcase ir.OMAKESLICECOPY:/+/n := n/-+ typecheck1:/^\tcase ir.OMAKESLICECOPY:/+0
	mv typecheck1:/^\tcase ir.OMAKESLICECOPY:/+2,/^\tcase /-2 tcMakeSliceCopy
	add typecheck.go:/^func tcMakeSliceCopy/-0 \
		// tcMakeSliceCopy typechecks an OMAKESLICECOPY node.
	# move type assertion above comment
	mv typecheck1:/^\tcase ir.OSLICEHEADER:/+/n := n/-+ typecheck1:/^\tcase ir.OSLICEHEADER:/+0
	mv typecheck1:/^\tcase ir.OSLICEHEADER:/+2,/^\tcase /-2 tcSliceHeader
	add typecheck.go:/^func tcSliceHeader/-0 \
		// tcSliceHeader typechecks an OSLICEHEADER node.
	mv typecheck1:/^\tcase ir.OSEND:/+2,/^\tcase /-2 tcSend
	add typecheck.go:/^func tcSend/-0 \
		// tcSend typechecks an OSEND node.
	mv typecheck1:/^\tcase ir.ORECV:/+2,/^\tcase /-2 tcRecv
	add typecheck.go:/^func tcRecv/-0 \
		// tcRecv typechecks an ORECV node.
	mv typecheck1:/^\tcase ir.OINDEX:/+2,/^\tcase /-2 tcIndex
	add typecheck.go:/^func tcIndex/-0 \
		// tcIndex typechecks an OINDEX node.
	mv typecheck1:/^\tcase ir.ODOTTYPE:/+2,/^\tcase /-2 tcDotType
	add typecheck.go:/^func tcDotType/-0 \
		// tcDotType typechecks an ODOTTYPE node.
	mv typecheck1:/^\tcase ir.OXDOT,/+2,/^\tcase /-2 tcDot
	add typecheck.go:/^func tcDot/-0 \
		// tcDot typechecks an OXDOT or ODOT node.
	mv typecheck1:/^\tcase ir.OADDR:/+2,/^\tcase /-2 tcAddr
	add typecheck.go:/^func tcAddr/-0 \
		// tcAddr typechecks an OADDR node.
	mv typecheck1:/^\tcase ir.OBITNOT,/+2,/^\tcase /-3 tcUnaryArith
	add typecheck.go:/^func tcUnaryArith/-0 \
		// tcUnaryArith typechecks a unary arithmetic expression.
	mv typecheck1:/^\t\tir.OXOR:/+1,/^\tcase /-2 tcArith
	add typecheck.go:/^func tcArith/-0 \
		// tcArith typechecks a binary arithmetic expression.
	mv typecheck1:/^\tcase ir.ODEREF:/+2,/^\tcase /-2 tcStar
	add typecheck.go:/^func tcStar/-0 \
		// tcStar typechecks an ODEREF node, which may be an expression or a type.
	mv typecheck1:/^\tcase ir.OTFUNC:/+2,/^\tcase /-2 tcFuncType
	add typecheck.go:/^func tcFuncType/-0 \
		// tcFuncType typechecks an OTFUNC node.
	mv typecheck1:/^\tcase ir.OTINTER:/+2,/^\tcase /-2 tcInterfaceType
	add typecheck.go:/^func tcInterfaceType/-0 \
		// tcInterfaceType typechecks an OTINTER node.
	mv typecheck1:/^\tcase ir.OTSTRUCT:/+2,/^\tcase /-2 tcStructType
	add typecheck.go:/^func tcStructType/-0 \
		// tcStructType typechecks an OTSTRUCT node.
	mv typecheck1:/^\tcase ir.OTCHAN:/+2,/^\tcase /-2 tcChanType
	add typecheck.go:/^func tcChanType/-0 \
		// tcChanType typechecks an OTCHAN node.
	mv typecheck1:/^\tcase ir.OTMAP:/+2,/^\tcase /-2 tcMapType
	add typecheck.go:/^func tcMapType/-0 \
		// tcMapType typechecks an OTMAP node.
	mv typecheck1:/^\tcase ir.OTARRAY:/+2,/^\tcase /-2 tcArrayType
	add typecheck.go:/^func tcArrayType/-0 \
		// tcArrayType typechecks an OTARRAY node.
	mv typecheck1:/^\tcase ir.OTSLICE:/+2,/^\tcase /-2 tcSliceType
	add typecheck.go:/^func tcSliceType/-0 \
		// tcSliceType typechecks an OTSLICE node.
	mv \
		tcAssign \
		tcAssignList \
		tcFor \
		tcGoDefer \
		tcIf \
		tcRange \
		tcReturn \
		tcSelect \
		tcSend \
		tcSwitch \
		tcSwitchExpr \
		tcSwitchType \
		typeSet \
		typeSetEntry \
		typeSet.add \
		stmt1.go
	mv stmt1.go stmt.go

	mv \
		tcAddr \
		tcArith \
		tcArrayType \
		tcChanType \
		tcClosure \
		tcCompLit \
		tcConv \
		tcDot \
		tcDotType \
		tcFuncType \
		tcITab \
		tcIndex \
		tcInterfaceType \
		tcLenCap \
		tcMapType \
		tcRecv \
		tcSPtr \
		tcSlice \
		tcSliceHeader \
		tcSliceType \
		tcStar \
		tcStructType \
		tcUnaryArith \
		expr.go

	mv \
		tcClosure \
		tcCallPart \
		tcFunc \
		tcCall \
		tcAppend \
		tcClose \
		tcComplex \
		tcCopy \
		tcDelete \
		tcMake \
		tcMakeSliceCopy \
		tcNew \
		tcPanic \
		tcPrint \
		tcRealImag \
		tcRecover \
		func1.go
	mv func1.go func.go

	mv \
		tcArrayType \
		tcChanType \
		tcFuncType \
		tcInterfaceType \
		tcMapType \
		tcSliceType \
		tcStructType \
		type.go
'

Change-Id: I0fb0a3039005bc1783575291daff1e6c306895ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/279429
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:34 +00:00
Russ Cox
b9693d7627 [dev.regabi] cmd/compile: split out package typecheck [generated]
This commit splits the typechecking logic into its own package,
the first of a sequence of CLs to break package gc into more
manageable units.

[git-generate]
cd src/cmd/compile/internal/gc
rf '
	# The binary import/export has to be part of typechecking,
	# because we load inlined function bodies lazily, but "exporter"
	# should not be. Move that out of bexport.go.
	mv exporter exporter.markObject exporter.markType export.go

	# Use the typechecking helpers, so that the calls left behind
	# in package gc do not need access to ctxExpr etc.
	ex {
		import "cmd/compile/internal/ir"

		# TODO(rsc): Should not be necessary.
		avoid TypecheckExpr
		avoid TypecheckStmt
		avoid TypecheckExprs
		avoid TypecheckStmts
		avoid TypecheckAssignExpr
		avoid TypecheckCallee

		var n ir.Node
		var ns []ir.Node
		typecheck(n, ctxExpr) -> TypecheckExpr(n)
		typecheck(n, ctxStmt) -> TypecheckStmt(n)
		typecheckslice(ns, ctxExpr) -> TypecheckExprs(ns)
		typecheckslice(ns, ctxStmt) -> TypecheckStmts(ns)
		typecheck(n, ctxExpr|ctxAssign) -> TypecheckAssignExpr(n)
		typecheck(n, ctxExpr|ctxCallee) -> TypecheckCallee(n)
	}

	# Move some typechecking API to typecheck.
	mv syslook LookupRuntime
	mv substArgTypes SubstArgTypes
	mv LookupRuntime SubstArgTypes syms.go

	mv conv Conv
	mv convnop ConvNop
	mv Conv ConvNop typecheck.go

	mv colasdefn AssignDefn
	mv colasname assignableName

	mv Target target.go

	mv initname autoexport exportsym dcl.go
	mv exportsym Export

	# Export API to be called from outside typecheck.
	# The ones with "Typecheck" prefixes will be renamed later to drop the prefix.
	mv adddot AddImplicitDots
	mv assignconv AssignConv
	mv expandmeth CalcMethods
	mv capturevarscomplete CaptureVarsComplete
	mv checkMapKeys CheckMapKeys
	mv checkreturn CheckReturn
	mv dclcontext DeclContext
	mv dclfunc DeclFunc
	mv declare Declare
	mv dotImportRefs DotImportRefs
	mv declImporter DeclImporter
	mv variter DeclVars
	mv defaultlit DefaultLit
	mv evalConst EvalConst
	mv expandInline ImportBody
	mv finishUniverse declareUniverse
	mv funcbody FinishFuncBody
	mv funchdr StartFuncBody
	mv indexconst IndexConst
	mv initTodo InitTodoFunc
	mv lookup Lookup
	mv resolve Resolve
	mv lookupN LookupNum
	mv nodAddr NodAddr
	mv nodAddrAt NodAddrAt
	mv nodnil NodNil
	mv origBoolConst OrigBool
	mv origConst OrigConst
	mv origIntConst OrigInt
	mv redeclare Redeclared
	mv tostruct NewStructType
	mv functype NewFuncType
	mv methodfunc NewMethodType
	mv structargs NewFuncParams
	mv temp Temp
	mv tempAt TempAt
	mv typecheckok TypecheckAllowed
	mv typecheck _typecheck # make room for typecheck pkg
	mv typecheckinl TypecheckImportedBody
	mv typecheckFunc TypecheckFunc
	mv iimport ReadImports
	mv iexport WriteExports
	mv sysfunc LookupRuntimeFunc
	mv sysvar LookupRuntimeVar

	# Move function constructors to typecheck.
	mv mkdotargslice MakeDotArgs
	mv fixVariadicCall FixVariadicCall
	mv closureType ClosureType
	mv partialCallType PartialCallType
	mv capturevars CaptureVars
	mv MakeDotArgs FixVariadicCall ClosureType PartialCallType CaptureVars typecheckclosure func.go

	mv autolabel AutoLabel
	mv AutoLabel syms.go

	mv Dlist dlist
	mv Symlink symlink

	mv \
		AssignDefn assignableName \
		AssignConv \
		CaptureVarsComplete \
		DeclContext \
		DeclFunc \
		DeclImporter \
		DeclVars \
		Declare \
		DotImportRefs \
		Export \
		InitTodoFunc \
		Lookup \
		LookupNum \
		LookupRuntimeFunc \
		LookupRuntimeVar \
		NewFuncParams \
		NewName \
		NodAddr \
		NodAddrAt \
		NodNil \
		Redeclared \
		StartFuncBody \
		FinishFuncBody \
		TypecheckImportedBody \
		AddImplicitDots \
		CalcMethods \
		CheckFuncStack \
		NewFuncType \
		NewMethodType \
		NewStructType \
		TypecheckAllowed \
		Temp \
		TempAt \
		adddot1 \
		dotlist \
		addmethod \
		assignconvfn \
		assignop \
		autotmpname \
		autoexport \
		bexport.go \
		checkdupfields \
		checkembeddedtype \
		closurename \
		convertop \
		declare_typegen \
		decldepth \
		dlist \
		dotpath \
		expand0 \
		expand1 \
		expandDecl \
		fakeRecvField \
		fnpkg \
		funcStack \
		funcStackEnt \
		funcarg \
		funcarg2 \
		funcargs \
		funcargs2 \
		globClosgen \
		ifacelookdot \
		implements \
		importalias \
		importconst \
		importfunc \
		importobj \
		importsym \
		importtype \
		importvar \
		inimport \
		initname \
		isptrto \
		loadsys \
		lookdot0 \
		lookdot1 \
		makepartialcall \
		okfor \
		okforlen \
		operandType \
		slist \
		symlink \
		tointerface \
		typeSet \
		typeSet.add \
		typeSetEntry \
		typecheckExprSwitch \
		typecheckTypeSwitch \
		typecheckpartialcall \
		typecheckrange \
		typecheckrangeExpr \
		typecheckselect \
		typecheckswitch \
		vargen \
		builtin.go \
		builtin_test.go \
		const.go \
		func.go \
		iexport.go \
		iimport.go \
		mapfile_mmap.go \
		syms.go \
		target.go \
		typecheck.go \
		unsafe.go \
		universe.go \
		cmd/compile/internal/typecheck
'
rm gen.go types.go types_acc.go

sed -i '' 's/package gc/package typecheck/' mapfile_read.go mkbuiltin.go
mv mapfile_read.go ../typecheck # not part of default build
mv mkbuiltin.go ../typecheck # package main helper
mv builtin ../typecheck

cd ../typecheck
mv dcl.go dcl1.go
mv typecheck.go typecheck1.go
mv universe.go universe1.go
rf '
	# Sweep some small files into larger ones.
	# "mv sym... file1.go file.go" (after the mv file1.go file.go above)
	# lets us insert sym... at the top of file.go.
	mv okfor okforeq universe1.go universe.go
	mv DeclContext vargen dcl1.go Temp TempAt autotmpname NewMethodType dcl.go
	mv InitTodoFunc inimport decldepth TypecheckAllowed typecheck1.go typecheck.go
	mv inl.go closure.go func.go
	mv range.go select.go swt.go stmt.go
	mv Lookup loadsys LookupRuntimeFunc LookupRuntimeVar syms.go
	mv unsafe.go const.go

	mv TypecheckAssignExpr AssignExpr
	mv TypecheckExpr Expr
	mv TypecheckStmt Stmt
	mv TypecheckExprs Exprs
	mv TypecheckStmts Stmts
	mv TypecheckCall Call
	mv TypecheckCallee Callee
	mv _typecheck check
	mv TypecheckFunc Func
	mv TypecheckFuncBody FuncBody
	mv TypecheckImports AllImportedBodies
	mv TypecheckImportedBody ImportedBody
	mv TypecheckInit Init
	mv TypecheckPackage Package
'
rm gen.go go.go init.go main.go reflect.go

Change-Id: Iea6a7aaf6407d690670ec58aeb36cc0b280f80b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/279236
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:26 +00:00
Russ Cox
dac0de3748 [dev.regabi] cmd/compile: move type size calculations into package types [generated]
To break up package gc, we need to put these calculations somewhere
lower in the import graph, either an existing or new package. Package types
already needs this code and is using hacks to get it without an import cycle.
We can remove the hacks and set up for the new package gc by moving the
code into package types itself.

[git-generate]
cd src/cmd/compile/internal/gc
rf '
	# Remove old import cycle hacks in gc.
	rm TypecheckInit:/types.Widthptr =/-0,/types.Dowidth =/+0 \
		../ssa/export_test.go:/types.Dowidth =/-+
	ex {
		import "cmd/compile/internal/types"
		types.Widthptr -> Widthptr
		types.Dowidth -> dowidth
	}

	# Disable CalcSize in tests instead of base.Fatalf
	sub dowidth:/base.Fatalf\("dowidth without betypeinit"\)/ \
		// Assume this is a test. \
		return

	# Move size calculation into cmd/compile/internal/types
	mv Widthptr PtrSize
	mv Widthreg RegSize
	mv slicePtrOffset SlicePtrOffset
	mv sliceLenOffset SliceLenOffset
	mv sliceCapOffset SliceCapOffset
	mv sizeofSlice SliceSize
	mv sizeofString StringSize
	mv skipDowidthForTracing SkipSizeForTracing
	mv dowidth CalcSize
	mv checkwidth CheckSize
	mv widstruct calcStructOffset
	mv sizeCalculationDisabled CalcSizeDisabled
	mv defercheckwidth DeferCheckSize
	mv resumecheckwidth ResumeCheckSize
	mv typeptrdata PtrDataSize
	mv \
		PtrSize RegSize SlicePtrOffset SkipSizeForTracing typePos align.go PtrDataSize \
		size.go
	mv size.go cmd/compile/internal/types
'

: # Remove old import cycle hacks in types.
cd ../types
rf '
	ex {
		Widthptr -> PtrSize
		Dowidth -> CalcSize
	}
	rm Widthptr Dowidth
'

Change-Id: Ib96cdc6bda2617235480c29392ea5cfb20f60cd8
Reviewed-on: https://go-review.googlesource.com/c/go/+/279234
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:20 +00:00
Russ Cox
527a1895d6 [dev.regabi] cmd/compile: move helpers into package ir [generated]
[git-generate]
cd src/cmd/compile/internal/gc
sed -i '' 's/TestBuiltin.*/& t.Skip("mkbuiltin needs fixing")/' builtin_test.go
gofmt -w builtin_test.go
rf '
	# Inline a few little-used constructors to avoid bringing them.
	ex {
		import "cmd/compile/internal/base"
		import "cmd/compile/internal/ir"
		import "cmd/compile/internal/types"
		import "cmd/internal/src"

		var typ *types.Type
		var sym *types.Sym
		var str string
		symfield(sym, typ) -> ir.NewField(base.Pos, sym, nil, typ)
		anonfield(typ) -> ir.NewField(base.Pos, nil, nil, typ)
		namedfield(str, typ) -> ir.NewField(base.Pos, lookup(str), nil, typ)

		var cp *ir.CallPartExpr
		callpartMethod(cp) -> cp.Method
		var n ir.Node
		callpartMethod(n) -> n.(*ir.CallPartExpr).Method

		var ns []ir.Node
		liststmt(ns) -> ir.NewBlockStmt(src.NoXPos, ns)
	}
	rm symfield anonfield namedfield liststmt callpartMethod

	mv maxStackVarSize MaxStackVarSize
	mv maxImplicitStackVarSize MaxImplicitStackVarSize
	mv smallArrayBytes MaxSmallArraySize
	mv MaxStackVarSize cfg.go

	mv nodbool NewBool
	mv nodintconst NewInt
	mv nodstr NewString
	mv NewBool NewInt NewString const.go

	mv Mpprec ConstPrec
	mv bigFloatVal BigFloat
	mv doesoverflow ConstOverflow
	mv isGoConst IsConstNode
	mv smallintconst IsSmallIntConst

	mv isZero IsZero
	mv islvalue IsAssignable
	mv staticValue StaticValue
	mv samesafeexpr SameSafeExpr
	mv checkPtr ShouldCheckPtr
	mv isReflectHeaderDataField IsReflectHeaderDataField
	mv paramNnames ParamNames
	mv methodSym MethodSym
	mv methodSymSuffix MethodSymSuffix
	mv methodExprFunc MethodExprFunc
	mv methodExprName MethodExprName
	mv IsZero IsAssignable StaticValue staticValue1 reassigned \
		IsIntrinsicCall \
		SameSafeExpr ShouldCheckPtr IsReflectHeaderDataField \
		ParamNames MethodSym MethodSymSuffix \
		MethodExprName MethodExprFunc \
		expr.go

	mv Curfn CurFunc
	mv funcsymname FuncSymName
	mv newFuncNameAt NewFuncNameAt
	mv setNodeNameFunc MarkFunc
	mv CurFunc FuncSymName NewFuncNameAt MarkFunc func.go

	mv isParamStackCopy IsParamStackCopy
	mv isParamHeapCopy IsParamHeapCopy
	mv nodfp RegFP
	mv IsParamStackCopy IsParamHeapCopy RegFP name.go

	mv hasUniquePos HasUniquePos
	mv setlineno SetPos
	mv initExpr InitExpr
	mv hasNamedResults HasNamedResults
	mv outervalue OuterValue
	mv HasNamedResults HasUniquePos SetPos InitExpr OuterValue EscNever node.go

	mv visitBottomUp VisitFuncsBottomUp # scc.go

	mv cfg.go \
		NewBool NewInt NewString \ # parts of const.go
		ConstPrec BigFloat ConstOverflow IsConstNode IsSmallIntConst \
		expr.go func.go name.go node.go scc.go \
		cmd/compile/internal/ir

'

Change-Id: I13402c5a2cedbf78d993a1eae2940718f23ac166
Reviewed-on: https://go-review.googlesource.com/c/go/+/279421
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:14 +00:00
Russ Cox
65c4c6dfb2 [dev.regabi] cmd/compile: group known symbols, packages, names [generated]
There are a handful of pre-computed magic symbols known by
package gc, and we need a place to store them.

If we keep them together, the need for type *ir.Name means that
package ir is the lowest package in the import hierarchy that they
can go in. And package ir needs gopkg for methodSymSuffix
(in a later CL), so they can't go any higher either, at least not all together.
So package ir it is.

Rather than dump them all into the top-level package ir
namespace, however, we introduce global structs, Syms, Pkgs, and Names,
and make the known symbols, packages, and names fields of those.

[git-generate]
cd src/cmd/compile/internal/gc

rf '
	add go.go:$ \
		// Names holds known names. \
		var Names struct{} \
		\
		// Syms holds known symbols. \
		var Syms struct {} \
		\
		// Pkgs holds known packages. \
		var Pkgs struct {} \

	mv staticuint64s Names.Staticuint64s
	mv zerobase Names.Zerobase

	mv assertE2I Syms.AssertE2I
	mv assertE2I2 Syms.AssertE2I2
	mv assertI2I Syms.AssertI2I
	mv assertI2I2 Syms.AssertI2I2
	mv deferproc Syms.Deferproc
	mv deferprocStack Syms.DeferprocStack
	mv Deferreturn Syms.Deferreturn
	mv Duffcopy Syms.Duffcopy
	mv Duffzero Syms.Duffzero
	mv gcWriteBarrier Syms.GCWriteBarrier
	mv goschedguarded Syms.Goschedguarded
	mv growslice Syms.Growslice
	mv msanread Syms.Msanread
	mv msanwrite Syms.Msanwrite
	mv msanmove Syms.Msanmove
	mv newobject Syms.Newobject
	mv newproc Syms.Newproc
	mv panicdivide Syms.Panicdivide
	mv panicshift Syms.Panicshift
	mv panicdottypeE Syms.PanicdottypeE
	mv panicdottypeI Syms.PanicdottypeI
	mv panicnildottype Syms.Panicnildottype
	mv panicoverflow Syms.Panicoverflow
	mv raceread Syms.Raceread
	mv racereadrange Syms.Racereadrange
	mv racewrite Syms.Racewrite
	mv racewriterange Syms.Racewriterange
	mv SigPanic Syms.SigPanic
	mv typedmemclr Syms.Typedmemclr
	mv typedmemmove Syms.Typedmemmove
	mv Udiv Syms.Udiv
	mv writeBarrier Syms.WriteBarrier
	mv zerobaseSym Syms.Zerobase
	mv arm64HasATOMICS Syms.ARM64HasATOMICS
	mv armHasVFPv4 Syms.ARMHasVFPv4
	mv x86HasFMA Syms.X86HasFMA
	mv x86HasPOPCNT Syms.X86HasPOPCNT
	mv x86HasSSE41 Syms.X86HasSSE41
	mv WasmDiv Syms.WasmDiv
	mv WasmMove Syms.WasmMove
	mv WasmZero Syms.WasmZero
	mv WasmTruncS Syms.WasmTruncS
	mv WasmTruncU Syms.WasmTruncU

	mv gopkg Pkgs.Go
	mv itabpkg Pkgs.Itab
	mv itablinkpkg Pkgs.Itablink
	mv mappkg Pkgs.Map
	mv msanpkg Pkgs.Msan
	mv racepkg Pkgs.Race
	mv Runtimepkg Pkgs.Runtime
	mv trackpkg Pkgs.Track
	mv unsafepkg Pkgs.Unsafe

	mv Names Syms Pkgs symtab.go
	mv symtab.go cmd/compile/internal/ir
'

Change-Id: Ic143862148569a3bcde8e70b26d75421aa2d00f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/279235
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:07 +00:00
Russ Cox
9ee309255a [dev.regabi] cmd/compile: move helpers into package types [generated]
[git-generate]
cd src/cmd/compile/internal/gc
rf '
	# Type hash (formatting).
	mv typehash TypeHash
	mv TypeHash fmt.go

	# Method sorting.
	mv methcmp MethodsByName
	mv MethodsByName MethodsByName.Len MethodsByName.Swap \
		MethodsByName.Less sort.go

	# Move version check into types.
	# A little surprising, but its keyed off the types.Pkg.
	ex {
		import "cmd/compile/internal/types"
		var p *types.Pkg
		var major, minor int
		langSupported(major, minor, p) -> AllowsGoVersion(p, major, minor)
	}
	rm langSupported
	mv checkLang ParseLangFlag
	mv lang langWant AllowsGoVersion ParseLangFlag \
		parseLang currentLang goVersionRE goversion.go

	mv testdclstack CheckDclstack
	mv CheckDclstack scope.go

	mv algtype1 AlgType
	mv isComplex IsComplex
	mv isFloat IsFloat
	mv isInt IsInt
	mv issimple IsSimple
	mv okforcmp IsOrdered
	mv floatForComplex FloatForComplex
	mv complexForFloat ComplexForFloat
	mv isdirectiface IsDirectIface
	mv isifacemethod IsInterfaceMethod
	mv isMethodApplicable IsMethodApplicable
	mv ispaddedfield IsPaddedField
	mv isRuntimePkg IsRuntimePkg
	mv isReflectPkg IsReflectPkg
	mv methtype ReceiverBaseType
	mv typesymname TypeSymName
	mv typesym TypeSym
	mv typeLookup TypeSymLookup
	mv IsAlias IsDotAlias
	mv isreflexive IsReflexive
	mv simtype SimType

	# The type1.go here is to avoid an undiagnosed bug in rf
	# that does not get the follow-up typechecking right if we
	# move directly to type.go during the mv into package types below.
	mv \
		IsInt IsOrdered IsReflexive \
		IsDirectIface IsInterfaceMethod IsMethodApplicable IsPaddedField \
		IsRuntimePkg IsReflectPkg ReceiverBaseType \
		FloatForComplex ComplexForFloat \
		TypeSym TypeSymLookup TypeSymName \
		typepkg SimType \
		type1.go

	# The alg1.go here is because we are only moving part of alg.go.
	mv typeHasNoAlg TypeHasNoAlg
	mv AlgKind ANOEQ AlgType TypeHasNoAlg IsComparable IncomparableField IsPaddedField alg1.go

	mv IsDotAlias pkg.go

	mv alg1.go algkind_string.go fmt.go goversion.go pkg.go \
		CheckDclstack \ # scope.go
		sort.go type1.go \
		cmd/compile/internal/types
'
cd ../types
rf '
	mv IsDclstackValid isDclstackValid
	mv alg1.go alg.go
	mv type1.go type.go
'

Change-Id: I8bd53b21c7bdd1770e1b525de32f136833e84c9d
Reviewed-on: https://go-review.googlesource.com/c/go/+/279307
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:38:01 +00:00
Russ Cox
ead4957892 [dev.regabi] cmd/compile: move helpers into package base [generated]
[git-generate]
cd src/cmd/compile/internal/gc
rf '
	# Move EnableTrace constant into base, with the other flags.
	mv enableTrace EnableTrace
	mv EnableTrace base.go

	# Move compilation checks to base.
	mv instrumenting Instrumenting
	mv ispkgin Compiling
	mv omit_pkgs NoInstrumentPkgs
	mv norace_inst_pkgs NoRacePkgs
	mv Instrumenting Compiling NoInstrumentPkgs NoRacePkgs base.go

	# Move AutogeneratedPos to package base, next to Pos.
	mv autogeneratedPos AutogeneratedPos
	mv AutogeneratedPos print.go

	mv timings Timer

	mv base.go print.go timings.go cmd/compile/internal/base
'
cd ../base
rf '
	mv Instrumenting Flag.Cfg.Instrumenting
'

Change-Id: I534437fa75857d31531fc499d833c9930c0a06d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/279420
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:37:55 +00:00
Russ Cox
440308ffd7 [dev.regabi] cmd/compile: simplify Nodes usage [generated]
Now that Nodes is a slice, most of the methods can be removed
in favor of direct slice operations, reducing the new API that must
be understood to:

	Copy
	Take
	Append
	Prepend
	Format

Passes buildall w/ toolstash -cmp.

[git-generate]
cd src/cmd/compile/internal/ir
rf '
ex . ../gc {
	var ns Nodes
	var pns *Nodes
	var n, n2, n3 Node
	var i int
	var slice []Node

	ns.Len() -> len(ns)
	ns.Slice() -> ns
	ns.First() -> ns[0]
	ns.Second() -> ns[1]
	ns.Index(i) -> ns[i]
	ns.Addr(i) -> &ns[i]
	ns.SetIndex(i, n) -> ns[i] = n
	ns.SetFirst(n) -> ns[0] = n
	ns.SetSecond(n) -> ns[1] = n
	ns.Set1(n) -> ns = []Node{n}
	ns.Set2(n, n2) -> ns = []Node{n, n2}
	ns.Set3(n, n2, n3) -> ns = []Node{n, n2, n3}
	ns.Set1(n) -> ns = []Node{n}
	ns.Set2(n, n2) -> ns = []Node{n, n2}
	ns.Set3(n, n2, n3) -> ns = []Node{n, n2, n3}
	AsNodes(slice) -> Nodes(slice)
	ns.AppendNodes(pns) -> ns.Append(pns.Take()...)
	ns.MoveNodes(pns) -> ns = pns.Take()
}

rm \
	Nodes.Len Nodes.Slice \
	Nodes.First Nodes.Second Nodes.Index Nodes.Addr \
	Nodes.SetIndex Nodes.SetFirst Nodes.SetSecond \
	Nodes.Set1 Nodes.Set2 Nodes.Set3 \
	AsNodes \
	Nodes.AppendNodes Nodes.MoveNodes
'

Change-Id: Iee86434ced52e67861c3fa71bdd6d994a8cba735
Reviewed-on: https://go-review.googlesource.com/c/go/+/277936
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:37:48 +00:00
Russ Cox
f9d373720e [dev.regabi] cmd/compile: remove Left, Right etc methods [generated]
Now that the generic graph structure methods - Left, Right, and so on -
have been removed from the Node interface, each implementation's uses
can be replaced with direct field access, using more specific names,
and the methods themselves can be deleted.

Passes buildall w/ toolstash -cmp.

[git-generate]

cd src/cmd/compile/internal/ir
rf '
	mv Func.iota Func.Iota_
	mv Name.fn Name.Func_
'

cd ../gc
rf '
ex . ../ir {
        import "cmd/compile/internal/ir"
        import "cmd/compile/internal/types"

        var ns ir.Nodes
        var b bool
        var i64 int64
        var n ir.Node
        var op ir.Op
        var sym *types.Sym
        var class ir.Class

        var decl *ir.Decl
        decl.Left()         -> decl.X
        decl.SetLeft(n)     -> decl.X = n

        var asl *ir.AssignListStmt
        asl.List()          -> asl.Lhs
        asl.PtrList()       -> &asl.Lhs
        asl.SetList(ns)     -> asl.Lhs = ns
        asl.Rlist()         -> asl.Rhs
        asl.PtrRlist()      -> &asl.Rhs
        asl.SetRlist(ns)    -> asl.Rhs = ns
        asl.Colas()         -> asl.Def
        asl.SetColas(b)     -> asl.Def = b

        var as *ir.AssignStmt
        as.Left()           -> as.X
        as.SetLeft(n)       -> as.X = n
        as.Right()          -> as.Y
        as.SetRight(n)      -> as.Y = n
        as.Colas()          -> as.Def
        as.SetColas(b)      -> as.Def = b

        var ao *ir.AssignOpStmt
        ao.Left()           -> ao.X
        ao.SetLeft(n)       -> ao.X = n
        ao.Right()          -> ao.Y
        ao.SetRight(n)      -> ao.Y = n
        ao.SubOp()          -> ao.AsOp
        ao.SetSubOp(op)     -> ao.AsOp = op
        ao.Implicit()       -> ao.IncDec
        ao.SetImplicit(b)   -> ao.IncDec = b

        var bl *ir.BlockStmt
        bl.List()           -> bl.List_
        bl.PtrList()        -> &bl.List_
        bl.SetList(ns)      -> bl.List_ = ns

        var br *ir.BranchStmt
        br.Sym()            -> br.Label
        br.SetSym(sym)      -> br.Label = sym

        var cas *ir.CaseStmt
        cas.List()          -> cas.List_
        cas.PtrList()       -> &cas.List_
        cas.SetList(ns)     -> cas.List_ = ns
        cas.Body()          -> cas.Body_
        cas.PtrBody()       -> &cas.Body_
        cas.SetBody(ns)     -> cas.Body_ = ns
        cas.Rlist()         -> cas.Vars
        cas.PtrRlist()      -> &cas.Vars
        cas.SetRlist(ns)    -> cas.Vars = ns
        cas.Left()          -> cas.Comm
        cas.SetLeft(n)      -> cas.Comm = n

        var fr *ir.ForStmt
        fr.Sym()            -> fr.Label
        fr.SetSym(sym)      -> fr.Label = sym
        fr.Left()           -> fr.Cond
        fr.SetLeft(n)       -> fr.Cond = n
        fr.Right()          -> fr.Post
        fr.SetRight(n)      -> fr.Post = n
        fr.Body()           -> fr.Body_
        fr.PtrBody()        -> &fr.Body_
        fr.SetBody(ns)      -> fr.Body_ = ns
        fr.List()           -> fr.Late
        fr.PtrList()        -> &fr.Late
        fr.SetList(ns)      -> fr.Late = ns
        fr.HasBreak()       -> fr.HasBreak_
        fr.SetHasBreak(b)   -> fr.HasBreak_ = b

        var gs *ir.GoDeferStmt
        gs.Left()           -> gs.Call
        gs.SetLeft(n)       -> gs.Call = n

        var ifs *ir.IfStmt
        ifs.Left()          -> ifs.Cond
        ifs.SetLeft(n)      -> ifs.Cond = n
        ifs.Body()          -> ifs.Body_
        ifs.PtrBody()       -> &ifs.Body_
        ifs.SetBody(ns)     -> ifs.Body_ = ns
        ifs.Rlist()         -> ifs.Else
        ifs.PtrRlist()      -> &ifs.Else
        ifs.SetRlist(ns)    -> ifs.Else = ns
        ifs.Likely()        -> ifs.Likely_
        ifs.SetLikely(b)    -> ifs.Likely_ = b

        var im *ir.InlineMarkStmt
        im.Offset()         -> im.Index
        im.SetOffset(i64)   -> im.Index = i64

        var lab *ir.LabelStmt
        lab.Sym()           -> lab.Label
        lab.SetSym(sym)     -> lab.Label = sym

        var rng *ir.RangeStmt
        rng.Sym()           -> rng.Label
        rng.SetSym(sym)     -> rng.Label = sym
        rng.Right()         -> rng.X
        rng.SetRight(n)     -> rng.X = n
        rng.Body()          -> rng.Body_
        rng.PtrBody()       -> &rng.Body_
        rng.SetBody(ns)     -> rng.Body_ = ns
        rng.List()          -> rng.Vars
        rng.PtrList()       -> &rng.Vars
        rng.SetList(ns)     -> rng.Vars = ns
        rng.HasBreak()      -> rng.HasBreak_
        rng.SetHasBreak(b)  -> rng.HasBreak_ = b
        rng.Colas()         -> rng.Def
        rng.SetColas(b)     -> rng.Def = b

        var ret *ir.ReturnStmt
        ret.List()          -> ret.Results
        ret.PtrList()       -> &ret.Results
        ret.SetList(ns)     -> ret.Results = ns

        var sel *ir.SelectStmt
        sel.List()          -> sel.Cases
        sel.PtrList()       -> &sel.Cases
        sel.SetList(ns)     -> sel.Cases = ns
        sel.Sym()           -> sel.Label
        sel.SetSym(sym)     -> sel.Label = sym
        sel.HasBreak()      -> sel.HasBreak_
        sel.SetHasBreak(b)  -> sel.HasBreak_ = b
        sel.Body()          -> sel.Compiled
        sel.PtrBody()       -> &sel.Compiled
        sel.SetBody(ns)     -> sel.Compiled = ns

        var send *ir.SendStmt
        send.Left()         -> send.Chan
        send.SetLeft(n)     -> send.Chan = n
        send.Right()        -> send.Value
        send.SetRight(n)    -> send.Value = n

        var sw *ir.SwitchStmt
        sw.Left()           -> sw.Tag
        sw.SetLeft(n)       -> sw.Tag = n
        sw.List()           -> sw.Cases
        sw.PtrList()        -> &sw.Cases
        sw.SetList(ns)      -> sw.Cases = ns
        sw.Body()           -> sw.Compiled
        sw.PtrBody()        -> &sw.Compiled
        sw.SetBody(ns)      -> sw.Compiled = ns
        sw.Sym()            -> sw.Label
        sw.SetSym(sym)      -> sw.Label = sym
        sw.HasBreak()       -> sw.HasBreak_
        sw.SetHasBreak(b)   -> sw.HasBreak_ = b

        var tg *ir.TypeSwitchGuard
        tg.Left()           -> tg.Tag
        tg.SetLeft(nil)     -> tg.Tag = nil
        tg.SetLeft(n)       -> tg.Tag = n.(*ir.Ident)
        tg.Right()          -> tg.X
        tg.SetRight(n)      -> tg.X = n

        var adds *ir.AddStringExpr
        adds.List()         -> adds.List_
        adds.PtrList()      -> &adds.List_
        adds.SetList(ns)    -> adds.List_ = ns

        var addr *ir.AddrExpr
        addr.Left()         -> addr.X
        addr.SetLeft(n)     -> addr.X = n
        addr.Right()        -> addr.Alloc
        addr.SetRight(n)    -> addr.Alloc = n

        var bin *ir.BinaryExpr
        bin.Left()          -> bin.X
        bin.SetLeft(n)      -> bin.X = n
        bin.Right()         -> bin.Y
        bin.SetRight(n)     -> bin.Y = n

        var log *ir.LogicalExpr
        log.Left()          -> log.X
        log.SetLeft(n)      -> log.X = n
        log.Right()         -> log.Y
        log.SetRight(n)     -> log.Y = n

        var call *ir.CallExpr
        call.Left()         -> call.X
        call.SetLeft(n)     -> call.X = n
        call.List()         -> call.Args
        call.PtrList()      -> &call.Args
        call.SetList(ns)    -> call.Args = ns
        call.Rlist()        -> call.Rargs
        call.PtrRlist()     -> &call.Rargs
        call.SetRlist(ns)   -> call.Rargs = ns
        call.IsDDD()        -> call.DDD
        call.SetIsDDD(b)    -> call.DDD = b
        call.NoInline()     -> call.NoInline_
        call.SetNoInline(b) -> call.NoInline_ = b
        call.Body()         -> call.Body_
        call.PtrBody()      -> &call.Body_
        call.SetBody(ns)    -> call.Body_ = ns

        var cp *ir.CallPartExpr
        cp.Func()           -> cp.Func_
        cp.Left()           -> cp.X
        cp.SetLeft(n)       -> cp.X = n
        cp.Sym()            -> cp.Method.Sym

        var clo *ir.ClosureExpr
        clo.Func()          -> clo.Func_

        var cr *ir.ClosureReadExpr
        cr.Offset()         -> cr.Offset_

        var cl *ir.CompLitExpr
        cl.Right()          -> cl.Ntype
        cl.SetRight(nil)    -> cl.Ntype = nil
        cl.SetRight(n)      -> cl.Ntype = ir.Node(n).(ir.Ntype)
        cl.List()           -> cl.List_
        cl.PtrList()        -> &cl.List_
        cl.SetList(ns)      -> cl.List_ = ns

        var conv *ir.ConvExpr
        conv.Left()         -> conv.X
        conv.SetLeft(n)     -> conv.X = n

        var ix *ir.IndexExpr
        ix.Left()           -> ix.X
        ix.SetLeft(n)       -> ix.X = n
        ix.Right()          -> ix.Index
        ix.SetRight(n)      -> ix.Index = n
        ix.IndexMapLValue() -> ix.Assigned
        ix.SetIndexMapLValue(b) -> ix.Assigned = b

        var kv *ir.KeyExpr
        kv.Left()           -> kv.Key
        kv.SetLeft(n)       -> kv.Key = n
        kv.Right()          -> kv.Value
        kv.SetRight(n)      -> kv.Value = n

        var sk *ir.StructKeyExpr
        sk.Sym()            -> sk.Field
        sk.SetSym(sym)      -> sk.Field = sym
        sk.Left()           -> sk.Value
        sk.SetLeft(n)       -> sk.Value = n
        sk.Offset()         -> sk.Offset_
        sk.SetOffset(i64)   -> sk.Offset_ = i64

        var ic *ir.InlinedCallExpr
        ic.Body()           -> ic.Body_
        ic.PtrBody()        -> &ic.Body_
        ic.SetBody(ns)      -> ic.Body_ = ns
        ic.Rlist()          -> ic.ReturnVars
        ic.PtrRlist()       -> &ic.ReturnVars
        ic.SetRlist(ns)     -> ic.ReturnVars = ns

        var mak *ir.MakeExpr
        mak.Left()          -> mak.Len
        mak.SetLeft(n)      -> mak.Len = n
        mak.Right()         -> mak.Cap
        mak.SetRight(n)     -> mak.Cap = n

        var par *ir.ParenExpr
        par.Left()          -> par.X
        par.SetLeft(n)      -> par.X = n

        var res *ir.ResultExpr
        res.Offset()        -> res.Offset_
        res.SetOffset(i64)  -> res.Offset_ = i64

        var dot *ir.SelectorExpr
        dot.Left()          -> dot.X
        dot.SetLeft(n)      -> dot.X = n
        dot.Sym()           -> dot.Sel
        dot.SetSym(sym)     -> dot.Sel = sym
        dot.Offset()        -> dot.Offset_
        dot.SetOffset(i64)  -> dot.Offset_ = i64

        var sl *ir.SliceExpr
        sl.Left()           -> sl.X
        sl.SetLeft(n)       -> sl.X = n
        sl.List()           -> sl.List_
        sl.PtrList()        -> &sl.List_
        sl.SetList(ns)      -> sl.List_ = ns

        var sh *ir.SliceHeaderExpr
        sh.Left()           -> sh.Ptr
        sh.SetLeft(n)       -> sh.Ptr = n
        sh.List()           -> sh.LenCap_
        sh.PtrList()        -> &sh.LenCap_
        sh.SetList(ns)      -> sh.LenCap_ = ns

        var st *ir.StarExpr
        st.Left()           -> st.X
        st.SetLeft(n)       -> st.X = n

        var ta *ir.TypeAssertExpr
        ta.Left()           -> ta.X
        ta.SetLeft(n)       -> ta.X = n
        ta.Right()          -> ta.Ntype
        ta.SetRight(n)    -> ta.Ntype = n
        ta.List()           -> ta.Itab
        ta.PtrList()        -> &ta.Itab
        ta.SetList(ns)      -> ta.Itab = ns

        var u *ir.UnaryExpr
        u.Left()            -> u.X
        u.SetLeft(n)        -> u.X = n

        var fn *ir.Func
        fn.Body()           -> fn.Body_
        fn.PtrBody()        -> &fn.Body_
        fn.SetBody(ns)      -> fn.Body_ = ns
        fn.Iota()           -> fn.Iota_
        fn.SetIota(i64)     -> fn.Iota_ = i64
        fn.Func()           -> fn

        var nam *ir.Name
        nam.SubOp()         -> nam.BuiltinOp
        nam.SetSubOp(op)    -> nam.BuiltinOp = op
        nam.Class()         -> nam.Class_
        nam.SetClass(class) -> nam.Class_ = class
        nam.Func()          -> nam.Func_
        nam.Offset()        -> nam.Offset_
        nam.SetOffset(i64)  -> nam.Offset_ = i64
}

ex . ../ir {
        import "cmd/compile/internal/ir"

        var n ir.Nodes

        (&n).Append         -> n.Append
        (&n).AppendNodes    -> n.AppendNodes
        (&n).MoveNodes      -> n.MoveNodes
        (&n).Prepend        -> n.Prepend
        (&n).Set            -> n.Set
        (&n).Set1           -> n.Set1
        (&n).Set2           -> n.Set2
        (&n).Set3           -> n.Set3

        var ntype ir.Ntype
        ir.Node(ntype).(ir.Ntype) -> ntype
}
'

cd ../ir
rf '
rm \
        Decl.Left Decl.SetLeft \
        AssignListStmt.List AssignListStmt.PtrList AssignListStmt.SetList \
        AssignListStmt.Rlist AssignListStmt.PtrRlist AssignListStmt.SetRlist \
        AssignListStmt.Colas AssignListStmt.SetColas \
        AssignStmt.Left AssignStmt.SetLeft \
        AssignStmt.Right AssignStmt.SetRight \
        AssignStmt.Colas AssignStmt.SetColas \
        AssignOpStmt.Left AssignOpStmt.SetLeft \
        AssignOpStmt.Right AssignOpStmt.SetRight \
        AssignOpStmt.SubOp AssignOpStmt.SetSubOp \
        AssignOpStmt.Implicit AssignOpStmt.SetImplicit \
        BlockStmt.List BlockStmt.PtrList BlockStmt.SetList \
        BranchStmt.SetSym \
        CaseStmt.List CaseStmt.PtrList CaseStmt.SetList \
        CaseStmt.Body CaseStmt.PtrBody CaseStmt.SetBody \
        CaseStmt.Rlist CaseStmt.PtrRlist CaseStmt.SetRlist \
        CaseStmt.Left CaseStmt.SetLeft \
        ForStmt.Left ForStmt.SetLeft \
        ForStmt.Right ForStmt.SetRight \
        ForStmt.Body ForStmt.PtrBody ForStmt.SetBody \
        ForStmt.List ForStmt.PtrList ForStmt.SetList \
        ForStmt.HasBreak ForStmt.SetHasBreak \
        ForStmt.Sym ForStmt.SetSym \
        GoDeferStmt.Left GoDeferStmt.SetLeft \
        IfStmt.Left IfStmt.SetLeft \
        IfStmt.Body IfStmt.PtrBody IfStmt.SetBody \
        IfStmt.Rlist IfStmt.PtrRlist IfStmt.SetRlist \
        IfStmt.Likely IfStmt.SetLikely \
        LabelStmt.SetSym \
        RangeStmt.Right RangeStmt.SetRight \
        RangeStmt.Body RangeStmt.PtrBody RangeStmt.SetBody \
        RangeStmt.List RangeStmt.PtrList RangeStmt.SetList \
        RangeStmt.HasBreak RangeStmt.SetHasBreak \
        RangeStmt.Colas RangeStmt.SetColas \
        RangeStmt.Sym RangeStmt.SetSym \
        ReturnStmt.List ReturnStmt.PtrList ReturnStmt.SetList \
        SelectStmt.List SelectStmt.PtrList SelectStmt.SetList \
        SelectStmt.HasBreak SelectStmt.SetHasBreak \
        SelectStmt.Body SelectStmt.PtrBody SelectStmt.SetBody \
        SelectStmt.Sym SelectStmt.SetSym \
        SendStmt.Left SendStmt.SetLeft \
        SendStmt.Right SendStmt.SetRight \
        SwitchStmt.Left SwitchStmt.SetLeft \
        SwitchStmt.List SwitchStmt.PtrList SwitchStmt.SetList \
        SwitchStmt.Body SwitchStmt.PtrBody SwitchStmt.SetBody \
        SwitchStmt.HasBreak SwitchStmt.SetHasBreak \
        SwitchStmt.Sym SwitchStmt.SetSym \
        TypeSwitchGuard.Left TypeSwitchGuard.SetLeft \
        TypeSwitchGuard.Right TypeSwitchGuard.SetRight \
        AddStringExpr.List AddStringExpr.PtrList AddStringExpr.SetList \
        AddrExpr.Left AddrExpr.SetLeft \
        AddrExpr.Right AddrExpr.SetRight \
        BinaryExpr.Left BinaryExpr.SetLeft \
        BinaryExpr.Right BinaryExpr.SetRight \
        LogicalExpr.Left LogicalExpr.SetLeft \
        LogicalExpr.Right LogicalExpr.SetRight \
        CallExpr.Left CallExpr.SetLeft \
        CallExpr.List CallExpr.PtrList CallExpr.SetList \
        CallExpr.Rlist CallExpr.PtrRlist CallExpr.SetRlist \
        CallExpr.NoInline CallExpr.SetNoInline \
        CallExpr.Body CallExpr.PtrBody CallExpr.SetBody \
        CallExpr.IsDDD CallExpr.SetIsDDD \
        CallPartExpr.Left CallPartExpr.SetLeft \
        ClosureReadExpr.Offset \
        ClosureReadExpr.Type \ # provided by miniExpr already
        CompLitExpr.Right CompLitExpr.SetRight \
        CompLitExpr.List CompLitExpr.PtrList CompLitExpr.SetList \
        ConvExpr.Left ConvExpr.SetLeft \
        IndexExpr.Left IndexExpr.SetLeft \
        IndexExpr.Right IndexExpr.SetRight \
        IndexExpr.IndexMapLValue IndexExpr.SetIndexMapLValue \
        KeyExpr.Left KeyExpr.SetLeft \
        KeyExpr.Right KeyExpr.SetRight \
        StructKeyExpr.Left StructKeyExpr.SetLeft \
        StructKeyExpr.Offset StructKeyExpr.SetOffset \
        StructKeyExpr.SetSym \
        InlinedCallExpr.Body InlinedCallExpr.PtrBody InlinedCallExpr.SetBody \
        InlinedCallExpr.Rlist InlinedCallExpr.PtrRlist InlinedCallExpr.SetRlist \
        MakeExpr.Left MakeExpr.SetLeft \
        MakeExpr.Right MakeExpr.SetRight \
        MethodExpr.Left MethodExpr.SetLeft \
        MethodExpr.Right MethodExpr.SetRight \
        MethodExpr.Offset MethodExpr.SetOffset \
        MethodExpr.Class MethodExpr.SetClass \
        ParenExpr.Left ParenExpr.SetLeft \
        ResultExpr.Offset ResultExpr.SetOffset \
        ReturnStmt.IsDDD \
        SelectorExpr.Left SelectorExpr.SetLeft \
        SelectorExpr.Offset SelectorExpr.SetOffset \
        SelectorExpr.SetSym \
        SliceExpr.Left SliceExpr.SetLeft \
        SliceExpr.List SliceExpr.PtrList SliceExpr.SetList \
        SliceHeaderExpr.Left SliceHeaderExpr.SetLeft \
        SliceHeaderExpr.List SliceHeaderExpr.PtrList SliceHeaderExpr.SetList \
        StarExpr.Left StarExpr.SetLeft \
        TypeAssertExpr.Left TypeAssertExpr.SetLeft \
        TypeAssertExpr.Right TypeAssertExpr.SetRight \
        TypeAssertExpr.List TypeAssertExpr.PtrList TypeAssertExpr.SetList \
        UnaryExpr.Left UnaryExpr.SetLeft \
        Func.Body Func.PtrBody Func.SetBody \
        Func.Iota Func.SetIota \
        CallPartExpr.Func ClosureExpr.Func Func.Func Name.Func \

mv BlockStmt.List_ BlockStmt.List
mv CaseStmt.List_ CaseStmt.List
mv CaseStmt.Body_ CaseStmt.Body
mv ForStmt.Body_ ForStmt.Body
mv ForStmt.HasBreak_ ForStmt.HasBreak
mv Func.Iota_ Func.Iota
mv IfStmt.Body_ IfStmt.Body
mv IfStmt.Likely_ IfStmt.Likely
mv RangeStmt.Body_ RangeStmt.Body
mv RangeStmt.HasBreak_ RangeStmt.HasBreak
mv SelectStmt.HasBreak_ SelectStmt.HasBreak
mv SwitchStmt.HasBreak_ SwitchStmt.HasBreak
mv AddStringExpr.List_ AddStringExpr.List
mv CallExpr.NoInline_ CallExpr.NoInline
mv CallExpr.Body_ CallExpr.Body # TODO what is this?
mv CallExpr.DDD CallExpr.IsDDD
mv ClosureReadExpr.Offset_ ClosureReadExpr.Offset
mv CompLitExpr.List_ CompLitExpr.List
mv StructKeyExpr.Offset_ StructKeyExpr.Offset
mv InlinedCallExpr.Body_ InlinedCallExpr.Body
mv ResultExpr.Offset_ ResultExpr.Offset
mv SelectorExpr.Offset_ SelectorExpr.Offset
mv SliceExpr.List_ SliceExpr.List
mv SliceHeaderExpr.LenCap_ SliceHeaderExpr.LenCap
mv Func.Body_ Func.Body
mv CallPartExpr.Func_ CallPartExpr.Func
mv ClosureExpr.Func_ ClosureExpr.Func
mv Name.Func_ Name.Func
'

Change-Id: Ia2ee59649674f83eb123e63fda7a7781cf91cc56
Reviewed-on: https://go-review.googlesource.com/c/go/+/277935
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:37:41 +00:00
Russ Cox
14d667341f [dev.regabi] cmd/compile: remove Node.Left etc [generated]
This automated CL adds type assertions on the true branches of
n.Op() equality tests, to redeclare n with a more specific type, when
it is safe to do so. (That is, when n is not reassigned with a more
general type, when n is not reassigned and then used outside the
scope, and so on.) All the "unsafe" times that the automated tool
would avoid have been removed or rewritten in earlier CLs, so that
after this CL and the next one, which removes the use of ir.Nod,
every use of the Left, Right, and so on methods is done using concrete
types, never the Node interface.

Having done that, the CL locks in the progress by deleting many of
the access methods, including Left, SetLeft and so on, from the
Node interface.

There are still uses of Name, Func, Sym, some of the tracking
bits, and a few other miscellaneous fields, but all the main access
methods are gone from the Node interface. The others will be cleaned
up in smaller CLs.

Passes buildall w/ toolstash -cmp.

[git-generate]
cd src/cmd/compile/internal/gc
rf 'typeassert {
        import "cmd/compile/internal/ir"
        var n ir.Node

        n.Op() == ir.OADD -> n.(*ir.BinaryExpr)
        n.Op() == ir.OADDR -> n.(*ir.AddrExpr)
        n.Op() == ir.OADDSTR -> n.(*ir.AddStringExpr)
        n.Op() == ir.OALIGNOF -> n.(*ir.UnaryExpr)
        n.Op() == ir.OAND -> n.(*ir.BinaryExpr)
        n.Op() == ir.OANDAND -> n.(*ir.LogicalExpr)
        n.Op() == ir.OANDNOT -> n.(*ir.BinaryExpr)
        n.Op() == ir.OAPPEND -> n.(*ir.CallExpr)
        n.Op() == ir.OARRAYLIT -> n.(*ir.CompLitExpr)
        n.Op() == ir.OAS -> n.(*ir.AssignStmt)
        n.Op() == ir.OAS2 -> n.(*ir.AssignListStmt)
        n.Op() == ir.OAS2DOTTYPE -> n.(*ir.AssignListStmt)
        n.Op() == ir.OAS2FUNC -> n.(*ir.AssignListStmt)
        n.Op() == ir.OAS2MAPR -> n.(*ir.AssignListStmt)
        n.Op() == ir.OAS2RECV -> n.(*ir.AssignListStmt)
        n.Op() == ir.OASOP -> n.(*ir.AssignOpStmt)
        n.Op() == ir.OBITNOT -> n.(*ir.UnaryExpr)
        n.Op() == ir.OBLOCK -> n.(*ir.BlockStmt)
        n.Op() == ir.OBREAK -> n.(*ir.BranchStmt)
        n.Op() == ir.OBYTES2STR -> n.(*ir.ConvExpr)
        n.Op() == ir.OBYTES2STRTMP -> n.(*ir.ConvExpr)
        n.Op() == ir.OCALL -> n.(*ir.CallExpr)
        n.Op() == ir.OCALLFUNC -> n.(*ir.CallExpr)
        n.Op() == ir.OCALLINTER -> n.(*ir.CallExpr)
        n.Op() == ir.OCALLMETH -> n.(*ir.CallExpr)
        n.Op() == ir.OCALLPART -> n.(*ir.CallPartExpr)
        n.Op() == ir.OCAP -> n.(*ir.UnaryExpr)
        n.Op() == ir.OCASE -> n.(*ir.CaseStmt)
        n.Op() == ir.OCFUNC -> n.(*ir.UnaryExpr)
        n.Op() == ir.OCHECKNIL -> n.(*ir.UnaryExpr)
        n.Op() == ir.OCLOSE -> n.(*ir.UnaryExpr)
        n.Op() == ir.OCOMPLEX -> n.(*ir.BinaryExpr)
        n.Op() == ir.OCOMPLIT -> n.(*ir.CompLitExpr)
        n.Op() == ir.OCONTINUE -> n.(*ir.BranchStmt)
        n.Op() == ir.OCONV -> n.(*ir.ConvExpr)
        n.Op() == ir.OCONVIFACE -> n.(*ir.ConvExpr)
        n.Op() == ir.OCONVNOP -> n.(*ir.ConvExpr)
        n.Op() == ir.OCOPY -> n.(*ir.BinaryExpr)
        n.Op() == ir.ODCL -> n.(*ir.Decl)
        n.Op() == ir.ODCLCONST -> n.(*ir.Decl)
        n.Op() == ir.ODCLFUNC -> n.(*ir.Func)
        n.Op() == ir.ODCLTYPE -> n.(*ir.Decl)
        n.Op() == ir.ODEFER -> n.(*ir.GoDeferStmt)
        n.Op() == ir.ODELETE -> n.(*ir.CallExpr)
        n.Op() == ir.ODEREF -> n.(*ir.StarExpr)
        n.Op() == ir.ODIV -> n.(*ir.BinaryExpr)
        n.Op() == ir.ODOT -> n.(*ir.SelectorExpr)
        n.Op() == ir.ODOTINTER -> n.(*ir.SelectorExpr)
        n.Op() == ir.ODOTMETH -> n.(*ir.SelectorExpr)
        n.Op() == ir.ODOTPTR -> n.(*ir.SelectorExpr)
        n.Op() == ir.ODOTTYPE -> n.(*ir.TypeAssertExpr)
        n.Op() == ir.ODOTTYPE2 -> n.(*ir.TypeAssertExpr)
        n.Op() == ir.OEFACE -> n.(*ir.BinaryExpr)
        n.Op() == ir.OEQ -> n.(*ir.BinaryExpr)
        n.Op() == ir.OFALL -> n.(*ir.BranchStmt)
        n.Op() == ir.OFOR -> n.(*ir.ForStmt)
        n.Op() == ir.OFORUNTIL -> n.(*ir.ForStmt)
        n.Op() == ir.OGE -> n.(*ir.BinaryExpr)
        n.Op() == ir.OGETG -> n.(*ir.CallExpr)
        n.Op() == ir.OGO -> n.(*ir.GoDeferStmt)
        n.Op() == ir.OGOTO -> n.(*ir.BranchStmt)
        n.Op() == ir.OGT -> n.(*ir.BinaryExpr)
        n.Op() == ir.OIDATA -> n.(*ir.UnaryExpr)
        n.Op() == ir.OIF -> n.(*ir.IfStmt)
        n.Op() == ir.OIMAG -> n.(*ir.UnaryExpr)
        n.Op() == ir.OINDEX -> n.(*ir.IndexExpr)
        n.Op() == ir.OINDEXMAP -> n.(*ir.IndexExpr)
        n.Op() == ir.OINLCALL -> n.(*ir.InlinedCallExpr)
        n.Op() == ir.OINLMARK -> n.(*ir.InlineMarkStmt)
        n.Op() == ir.OITAB -> n.(*ir.UnaryExpr)
        n.Op() == ir.OKEY -> n.(*ir.KeyExpr)
        n.Op() == ir.OLABEL -> n.(*ir.LabelStmt)
        n.Op() == ir.OLE -> n.(*ir.BinaryExpr)
        n.Op() == ir.OLEN -> n.(*ir.UnaryExpr)
        n.Op() == ir.OLSH -> n.(*ir.BinaryExpr)
        n.Op() == ir.OLT -> n.(*ir.BinaryExpr)
        n.Op() == ir.OMAKE -> n.(*ir.CallExpr)
        n.Op() == ir.OMAKECHAN -> n.(*ir.MakeExpr)
        n.Op() == ir.OMAKEMAP -> n.(*ir.MakeExpr)
        n.Op() == ir.OMAKESLICE -> n.(*ir.MakeExpr)
        n.Op() == ir.OMAKESLICECOPY -> n.(*ir.MakeExpr)
        n.Op() == ir.OMAPLIT -> n.(*ir.CompLitExpr)
        n.Op() == ir.OMETHEXPR -> n.(*ir.MethodExpr)
        n.Op() == ir.OMOD -> n.(*ir.BinaryExpr)
        n.Op() == ir.OMUL -> n.(*ir.BinaryExpr)
        n.Op() == ir.ONAME -> n.(*ir.Name)
        n.Op() == ir.ONE -> n.(*ir.BinaryExpr)
        n.Op() == ir.ONEG -> n.(*ir.UnaryExpr)
        n.Op() == ir.ONEW -> n.(*ir.UnaryExpr)
        n.Op() == ir.ONEWOBJ -> n.(*ir.UnaryExpr)
        n.Op() == ir.ONIL -> n.(*ir.NilExpr)
        n.Op() == ir.ONOT -> n.(*ir.UnaryExpr)
        n.Op() == ir.OOFFSETOF -> n.(*ir.UnaryExpr)
        n.Op() == ir.OOR -> n.(*ir.BinaryExpr)
        n.Op() == ir.OOROR -> n.(*ir.LogicalExpr)
        n.Op() == ir.OPACK -> n.(*ir.PkgName)
        n.Op() == ir.OPANIC -> n.(*ir.UnaryExpr)
        n.Op() == ir.OPAREN -> n.(*ir.ParenExpr)
        n.Op() == ir.OPLUS -> n.(*ir.UnaryExpr)
        n.Op() == ir.OPRINT -> n.(*ir.CallExpr)
        n.Op() == ir.OPRINTN -> n.(*ir.CallExpr)
        n.Op() == ir.OPTRLIT -> n.(*ir.AddrExpr)
        n.Op() == ir.ORANGE -> n.(*ir.RangeStmt)
        n.Op() == ir.OREAL -> n.(*ir.UnaryExpr)
        n.Op() == ir.ORECOVER -> n.(*ir.CallExpr)
        n.Op() == ir.ORECV -> n.(*ir.UnaryExpr)
        n.Op() == ir.ORESULT -> n.(*ir.ResultExpr)
        n.Op() == ir.ORETJMP -> n.(*ir.BranchStmt)
        n.Op() == ir.ORETURN -> n.(*ir.ReturnStmt)
        n.Op() == ir.ORSH -> n.(*ir.BinaryExpr)
        n.Op() == ir.ORUNES2STR -> n.(*ir.ConvExpr)
        n.Op() == ir.ORUNESTR -> n.(*ir.ConvExpr)
        n.Op() == ir.OSELECT -> n.(*ir.SelectStmt)
        n.Op() == ir.OSELRECV2 -> n.(*ir.AssignListStmt)
        n.Op() == ir.OSEND -> n.(*ir.SendStmt)
        n.Op() == ir.OSIZEOF -> n.(*ir.UnaryExpr)
        n.Op() == ir.OSLICE -> n.(*ir.SliceExpr)
        n.Op() == ir.OSLICE3 -> n.(*ir.SliceExpr)
        n.Op() == ir.OSLICE3ARR -> n.(*ir.SliceExpr)
        n.Op() == ir.OSLICEARR -> n.(*ir.SliceExpr)
        n.Op() == ir.OSLICEHEADER -> n.(*ir.SliceHeaderExpr)
        n.Op() == ir.OSLICELIT -> n.(*ir.CompLitExpr)
        n.Op() == ir.OSLICESTR -> n.(*ir.SliceExpr)
        n.Op() == ir.OSPTR -> n.(*ir.UnaryExpr)
        n.Op() == ir.OSTR2BYTES -> n.(*ir.ConvExpr)
        n.Op() == ir.OSTR2BYTESTMP -> n.(*ir.ConvExpr)
        n.Op() == ir.OSTR2RUNES -> n.(*ir.ConvExpr)
        n.Op() == ir.OSTRUCTLIT -> n.(*ir.CompLitExpr)
        n.Op() == ir.OSUB -> n.(*ir.BinaryExpr)
        n.Op() == ir.OSWITCH -> n.(*ir.SwitchStmt)
        n.Op() == ir.OTYPESW -> n.(*ir.TypeSwitchGuard)
        n.Op() == ir.OVARDEF -> n.(*ir.UnaryExpr)
        n.Op() == ir.OVARKILL -> n.(*ir.UnaryExpr)
        n.Op() == ir.OVARLIVE -> n.(*ir.UnaryExpr)
        n.Op() == ir.OXDOT -> n.(*ir.SelectorExpr)
        n.Op() == ir.OXOR -> n.(*ir.BinaryExpr)
}
'

cd ../ir
rf '
        rm \
                Node.SetOp \
                miniNode.SetOp \
                Node.Func \
                miniNode.Func \
                Node.Left Node.SetLeft \
                miniNode.Left miniNode.SetLeft \
                Node.Right Node.SetRight \
                miniNode.Right miniNode.SetRight \
                Node.List Node.PtrList Node.SetList \
                miniNode.List miniNode.PtrList miniNode.SetList \
                Node.Rlist Node.PtrRlist Node.SetRlist \
                miniNode.Rlist miniNode.PtrRlist miniNode.SetRlist \
                Node.Body Node.PtrBody Node.SetBody \
                miniNode.Body miniNode.PtrBody miniNode.SetBody \
                Node.SubOp Node.SetSubOp \
                miniNode.SubOp miniNode.SetSubOp \
                Node.SetSym \
                miniNode.SetSym \
                Node.Offset Node.SetOffset \
                miniNode.Offset miniNode.SetOffset \
                Node.Class Node.SetClass \
                miniNode.Class miniNode.SetClass \
                Node.Iota Node.SetIota \
                miniNode.Iota miniNode.SetIota \
                Node.Colas Node.SetColas \
                miniNode.Colas miniNode.SetColas \
                Node.Transient Node.SetTransient \
                miniNode.Transient miniNode.SetTransient \
                Node.Implicit Node.SetImplicit \
                miniNode.Implicit miniNode.SetImplicit \
                Node.IsDDD Node.SetIsDDD \
                miniNode.IsDDD miniNode.SetIsDDD \
                Node.MarkReadonly \
                miniNode.MarkReadonly \
                Node.Likely Node.SetLikely \
                miniNode.Likely miniNode.SetLikely \
                Node.SliceBounds Node.SetSliceBounds \
                miniNode.SliceBounds miniNode.SetSliceBounds \
                Node.NoInline Node.SetNoInline \
                miniNode.NoInline miniNode.SetNoInline \
                Node.IndexMapLValue Node.SetIndexMapLValue \
                miniNode.IndexMapLValue miniNode.SetIndexMapLValue \
                Node.ResetAux \
                miniNode.ResetAux \
                Node.HasBreak Node.SetHasBreak \
                miniNode.HasBreak miniNode.SetHasBreak \
                Node.Bounded Node.SetBounded \
                miniNode.Bounded miniNode.SetBounded \
                miniNode.Embedded miniNode.SetEmbedded \
                miniNode.Int64Val miniNode.Uint64Val miniNode.CanInt64 \
                miniNode.BoolVal miniNode.StringVal \
                miniNode.TChanDir miniNode.SetTChanDir \
                miniNode.Format \
                miniNode.copy miniNode.doChildren miniNode.editChildren \

'

Change-Id: I2a05b535963b43f83b1849fcf653f82b99af6035
Reviewed-on: https://go-review.googlesource.com/c/go/+/277934
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:37:34 +00:00
Russ Cox
6f27d29be0 [dev.regabi] cmd/compile: remove ir.Nod [generated]
Rewrite all uses of ir.Nod and friends to call the IR constructors directly.
This gives the results a more specific type and will play nicely with
introduction of more specific types throughout the code in a followup CL.

Passes buildall w/ toolstash -cmp.

[git-generate]
cd src/cmd/compile/internal/gc
rf '
ex . ../ir {
	import "cmd/compile/internal/ir"
	import "cmd/compile/internal/types"
	import "cmd/compile/internal/syntax"
	import "cmd/internal/src"

	var p *noder
	var orig syntax.Node
	var op ir.Op
	var l, r ir.Node
	var sym *types.Sym
	p.nod(orig, op, l, r) -> ir.NodAt(p.pos(orig), op, l, r)
	p.nodSym(orig, op, l, sym) -> nodlSym(p.pos(orig), op, l, sym)

	var xpos src.XPos
	var ns ir.Nodes
	npos(xpos, nodSym(op, l, sym)) -> nodlSym(xpos, op, l, sym)
	npos(xpos, liststmt(ns)) -> ir.NewBlockStmt(xpos, ns)
}
ex . ../ir {
	import "cmd/compile/internal/base"
	import "cmd/compile/internal/ir"
	import "cmd/compile/internal/types"

	var op ir.Op
	var l, r ir.Node
	ir.Nod(op, l, r) -> ir.NodAt(base.Pos, op, l, r)

	var sym *types.Sym
	nodSym(op, l, sym) -> nodlSym(base.Pos, op, l, sym)
}
ex . ../ir {
	import "cmd/compile/internal/ir"
	import "cmd/internal/src"

	# rf overlapping match handling is not quite good enough
	# for certain nested rewrites, so handle these two - which often contain other ir.NodAt calls - early.
	var l, r ir.Node
	var xpos src.XPos
	ir.NodAt(xpos, ir.OAS, l, r)              -> ir.NewAssignStmt(xpos, l, r)
	ir.NodAt(xpos, ir.OIF, l, nil)            -> ir.NewIfStmt(xpos, l, nil, nil)
}
ex . ../ir {
	import "cmd/compile/internal/ir"
	import "cmd/compile/internal/types"
	import "cmd/internal/src"

	var l, r ir.Node
	var sym *types.Sym
	var xpos src.XPos

	nodlSym(xpos, ir.ODOT, l, sym)                   -> ir.NewSelectorExpr(xpos, ir.ODOT, l, sym)
	nodlSym(xpos, ir.OXDOT, l, sym)                  -> ir.NewSelectorExpr(xpos, ir.OXDOT, l, sym)
	nodlSym(xpos, ir.ODOTPTR, l, sym)                -> ir.NewSelectorExpr(xpos, ir.ODOTPTR, l, sym)
	nodlSym(xpos, ir.OGOTO, nil, sym)                -> ir.NewBranchStmt(xpos, ir.OGOTO, sym)
	nodlSym(xpos, ir.ORETJMP, nil, sym)              -> ir.NewBranchStmt(xpos, ir.ORETJMP, sym)
	nodlSym(xpos, ir.OLABEL, nil, sym)               -> ir.NewLabelStmt(xpos, sym)
	nodlSym(xpos, ir.OSTRUCTKEY, l, sym)             -> ir.NewStructKeyExpr(xpos, sym, l)

	ir.NodAt(xpos, ir.OADD, l, r)             -> ir.NewBinaryExpr(xpos, ir.OADD, l, r)
	ir.NodAt(xpos, ir.OAND, l, r)             -> ir.NewBinaryExpr(xpos, ir.OAND, l, r)
	ir.NodAt(xpos, ir.OANDNOT, l, r)          -> ir.NewBinaryExpr(xpos, ir.OANDNOT, l, r)
	ir.NodAt(xpos, ir.ODIV, l, r)             -> ir.NewBinaryExpr(xpos, ir.ODIV, l, r)
	ir.NodAt(xpos, ir.OEQ, l, r)              -> ir.NewBinaryExpr(xpos, ir.OEQ, l, r)
	ir.NodAt(xpos, ir.OGE, l, r)              -> ir.NewBinaryExpr(xpos, ir.OGE, l, r)
	ir.NodAt(xpos, ir.OGT, l, r)              -> ir.NewBinaryExpr(xpos, ir.OGT, l, r)
	ir.NodAt(xpos, ir.OLE, l, r)              -> ir.NewBinaryExpr(xpos, ir.OLE, l, r)
	ir.NodAt(xpos, ir.OLSH, l, r)             -> ir.NewBinaryExpr(xpos, ir.OLSH, l, r)
	ir.NodAt(xpos, ir.OLT, l, r)              -> ir.NewBinaryExpr(xpos, ir.OLT, l, r)
	ir.NodAt(xpos, ir.OMOD, l, r)             -> ir.NewBinaryExpr(xpos, ir.OMOD, l, r)
	ir.NodAt(xpos, ir.OMUL, l, r)             -> ir.NewBinaryExpr(xpos, ir.OMUL, l, r)
	ir.NodAt(xpos, ir.ONE, l, r)              -> ir.NewBinaryExpr(xpos, ir.ONE, l, r)
	ir.NodAt(xpos, ir.OOR, l, r)              -> ir.NewBinaryExpr(xpos, ir.OOR, l, r)
	ir.NodAt(xpos, ir.ORSH, l, r)             -> ir.NewBinaryExpr(xpos, ir.ORSH, l, r)
	ir.NodAt(xpos, ir.OSUB, l, r)             -> ir.NewBinaryExpr(xpos, ir.OSUB, l, r)
	ir.NodAt(xpos, ir.OXOR, l, r)             -> ir.NewBinaryExpr(xpos, ir.OXOR, l, r)
	ir.NodAt(xpos, ir.OCOPY, l, r)            -> ir.NewBinaryExpr(xpos, ir.OCOPY, l, r)
	ir.NodAt(xpos, ir.OCOMPLEX, l, r)         -> ir.NewBinaryExpr(xpos, ir.OCOMPLEX, l, r)
	ir.NodAt(xpos, ir.OEFACE, l, r)           -> ir.NewBinaryExpr(xpos, ir.OEFACE, l, r)
	ir.NodAt(xpos, ir.OADDR, l, nil)          -> ir.NewAddrExpr(xpos, l)
	ir.NodAt(xpos, ir.OADDSTR, nil, nil)      -> ir.NewAddStringExpr(xpos, nil)
	ir.NodAt(xpos, ir.OANDAND, l, r)          -> ir.NewLogicalExpr(xpos, ir.OANDAND, l, r)
	ir.NodAt(xpos, ir.OOROR, l, r)            -> ir.NewLogicalExpr(xpos, ir.OOROR, l, r)
	ir.NodAt(xpos, ir.OARRAYLIT, nil, nil)    -> ir.NewCompLitExpr(xpos, ir.OARRAYLIT, nil, nil)
	ir.NodAt(xpos, ir.OCOMPLIT, nil, nil)     -> ir.NewCompLitExpr(xpos, ir.OCOMPLIT, nil, nil)
	ir.NodAt(xpos, ir.OMAPLIT, nil, nil)      -> ir.NewCompLitExpr(xpos, ir.OMAPLIT, nil, nil)
	ir.NodAt(xpos, ir.OSTRUCTLIT, nil, nil)   -> ir.NewCompLitExpr(xpos, ir.OSTRUCTLIT, nil, nil)
	ir.NodAt(xpos, ir.OSLICELIT, nil, nil)    -> ir.NewCompLitExpr(xpos, ir.OSLICELIT, nil, nil)
	ir.NodAt(xpos, ir.OARRAYLIT, nil, r)      -> ir.NewCompLitExpr(xpos, ir.OARRAYLIT, r.(ir.Ntype), nil)
	ir.NodAt(xpos, ir.OCOMPLIT, nil, r)       -> ir.NewCompLitExpr(xpos, ir.OCOMPLIT, r.(ir.Ntype), nil)
	ir.NodAt(xpos, ir.OMAPLIT, nil, r)        -> ir.NewCompLitExpr(xpos, ir.OMAPLIT, r.(ir.Ntype), nil)
	ir.NodAt(xpos, ir.OSTRUCTLIT, nil, r)     -> ir.NewCompLitExpr(xpos, ir.OSTRUCTLIT, r.(ir.Ntype), nil)
	ir.NodAt(xpos, ir.OSLICELIT, nil, r)      -> ir.NewCompLitExpr(xpos, ir.OSLICELIT, r.(ir.Ntype), nil)
	ir.NodAt(xpos, ir.OAS2, nil, nil)         -> ir.NewAssignListStmt(xpos, ir.OAS2, nil, nil)
	ir.NodAt(xpos, ir.OAS2DOTTYPE, nil, nil)  -> ir.NewAssignListStmt(xpos, ir.OAS2DOTTYPE, nil, nil)
	ir.NodAt(xpos, ir.OAS2FUNC, nil, nil)     -> ir.NewAssignListStmt(xpos, ir.OAS2FUNC, nil, nil)
	ir.NodAt(xpos, ir.OAS2MAPR, nil, nil)     -> ir.NewAssignListStmt(xpos, ir.OAS2MAPR, nil, nil)
	ir.NodAt(xpos, ir.OAS2RECV, nil, nil)     -> ir.NewAssignListStmt(xpos, ir.OAS2RECV, nil, nil)
	ir.NodAt(xpos, ir.OSELRECV2, nil, nil)    -> ir.NewAssignListStmt(xpos, ir.OSELRECV2, nil, nil)
	ir.NodAt(xpos, ir.OASOP, l, r)            -> ir.NewAssignOpStmt(xpos, ir.OXXX, l, r)
	ir.NodAt(xpos, ir.OBITNOT, l, nil)        -> ir.NewUnaryExpr(xpos, ir.OBITNOT, l)
	ir.NodAt(xpos, ir.ONEG, l, nil)           -> ir.NewUnaryExpr(xpos, ir.ONEG, l)
	ir.NodAt(xpos, ir.ONOT, l, nil)           -> ir.NewUnaryExpr(xpos, ir.ONOT, l)
	ir.NodAt(xpos, ir.OPLUS, l, nil)          -> ir.NewUnaryExpr(xpos, ir.OPLUS, l)
	ir.NodAt(xpos, ir.ORECV, l, nil)          -> ir.NewUnaryExpr(xpos, ir.ORECV, l)
	ir.NodAt(xpos, ir.OALIGNOF, l, nil)       -> ir.NewUnaryExpr(xpos, ir.OALIGNOF, l)
	ir.NodAt(xpos, ir.OCAP, l, nil)           -> ir.NewUnaryExpr(xpos, ir.OCAP, l)
	ir.NodAt(xpos, ir.OCLOSE, l, nil)         -> ir.NewUnaryExpr(xpos, ir.OCLOSE, l)
	ir.NodAt(xpos, ir.OIMAG, l, nil)          -> ir.NewUnaryExpr(xpos, ir.OIMAG, l)
	ir.NodAt(xpos, ir.OLEN, l, nil)           -> ir.NewUnaryExpr(xpos, ir.OLEN, l)
	ir.NodAt(xpos, ir.ONEW, l, nil)           -> ir.NewUnaryExpr(xpos, ir.ONEW, l)
	ir.NodAt(xpos, ir.ONEWOBJ, l, nil)        -> ir.NewUnaryExpr(xpos, ir.ONEWOBJ, l)
	ir.NodAt(xpos, ir.OOFFSETOF, l, nil)      -> ir.NewUnaryExpr(xpos, ir.OOFFSETOF, l)
	ir.NodAt(xpos, ir.OPANIC, l, nil)         -> ir.NewUnaryExpr(xpos, ir.OPANIC, l)
	ir.NodAt(xpos, ir.OREAL, l, nil)          -> ir.NewUnaryExpr(xpos, ir.OREAL, l)
	ir.NodAt(xpos, ir.OSIZEOF, l, nil)        -> ir.NewUnaryExpr(xpos, ir.OSIZEOF, l)
	ir.NodAt(xpos, ir.OCHECKNIL, l, nil)      -> ir.NewUnaryExpr(xpos, ir.OCHECKNIL, l)
	ir.NodAt(xpos, ir.OCFUNC, l, nil)         -> ir.NewUnaryExpr(xpos, ir.OCFUNC, l)
	ir.NodAt(xpos, ir.OIDATA, l, nil)         -> ir.NewUnaryExpr(xpos, ir.OIDATA, l)
	ir.NodAt(xpos, ir.OITAB, l, nil)          -> ir.NewUnaryExpr(xpos, ir.OITAB, l)
	ir.NodAt(xpos, ir.OSPTR, l, nil)          -> ir.NewUnaryExpr(xpos, ir.OSPTR, l)
	ir.NodAt(xpos, ir.OVARDEF, l, nil)        -> ir.NewUnaryExpr(xpos, ir.OVARDEF, l)
	ir.NodAt(xpos, ir.OVARKILL, l, nil)       -> ir.NewUnaryExpr(xpos, ir.OVARKILL, l)
	ir.NodAt(xpos, ir.OVARLIVE, l, nil)       -> ir.NewUnaryExpr(xpos, ir.OVARLIVE, l)
	ir.NodAt(xpos, ir.OBLOCK, nil, nil)       -> ir.NewBlockStmt(xpos, nil)
	ir.NodAt(xpos, ir.OBREAK, nil, nil)       -> ir.NewBranchStmt(xpos, ir.OBREAK, nil)
	ir.NodAt(xpos, ir.OCONTINUE, nil, nil)    -> ir.NewBranchStmt(xpos, ir.OCONTINUE, nil)
	ir.NodAt(xpos, ir.OFALL, nil, nil)        -> ir.NewBranchStmt(xpos, ir.OFALL, nil)
	ir.NodAt(xpos, ir.OGOTO, nil, nil)        -> ir.NewBranchStmt(xpos, ir.OGOTO, nil)
	ir.NodAt(xpos, ir.ORETJMP, nil, nil)      -> ir.NewBranchStmt(xpos, ir.ORETJMP, nil)
	ir.NodAt(xpos, ir.OCALL, l, nil)          -> ir.NewCallExpr(xpos, ir.OCALL, l, nil)
	ir.NodAt(xpos, ir.OCALLFUNC, l, nil)      -> ir.NewCallExpr(xpos, ir.OCALLFUNC, l, nil)
	ir.NodAt(xpos, ir.OCALLINTER, l, nil)     -> ir.NewCallExpr(xpos, ir.OCALLINTER, l, nil)
	ir.NodAt(xpos, ir.OCALLMETH, l, nil)      -> ir.NewCallExpr(xpos, ir.OCALLMETH, l, nil)
	ir.NodAt(xpos, ir.OAPPEND, l, nil)        -> ir.NewCallExpr(xpos, ir.OAPPEND, l, nil)
	ir.NodAt(xpos, ir.ODELETE, l, nil)        -> ir.NewCallExpr(xpos, ir.ODELETE, l, nil)
	ir.NodAt(xpos, ir.OGETG, l, nil)          -> ir.NewCallExpr(xpos, ir.OGETG, l, nil)
	ir.NodAt(xpos, ir.OMAKE, l, nil)          -> ir.NewCallExpr(xpos, ir.OMAKE, l, nil)
	ir.NodAt(xpos, ir.OPRINT, l, nil)         -> ir.NewCallExpr(xpos, ir.OPRINT, l, nil)
	ir.NodAt(xpos, ir.OPRINTN, l, nil)        -> ir.NewCallExpr(xpos, ir.OPRINTN, l, nil)
	ir.NodAt(xpos, ir.ORECOVER, l, nil)       -> ir.NewCallExpr(xpos, ir.ORECOVER, l, nil)
	ir.NodAt(xpos, ir.OCASE, nil, nil)        -> ir.NewCaseStmt(xpos, nil, nil)
	ir.NodAt(xpos, ir.OCONV, l, nil)          -> ir.NewConvExpr(xpos, ir.OCONV, nil, l)
	ir.NodAt(xpos, ir.OCONVIFACE, l, nil)     -> ir.NewConvExpr(xpos, ir.OCONVIFACE, nil, l)
	ir.NodAt(xpos, ir.OCONVNOP, l, nil)       -> ir.NewConvExpr(xpos, ir.OCONVNOP, nil, l)
	ir.NodAt(xpos, ir.ORUNESTR, l, nil)       -> ir.NewConvExpr(xpos, ir.ORUNESTR, nil, l)
	ir.NodAt(xpos, ir.ODCL, l, nil)           -> ir.NewDecl(xpos, ir.ODCL, l)
	ir.NodAt(xpos, ir.ODCLCONST, l, nil)      -> ir.NewDecl(xpos, ir.ODCLCONST, l)
	ir.NodAt(xpos, ir.ODCLTYPE, l, nil)       -> ir.NewDecl(xpos, ir.ODCLTYPE, l)
	ir.NodAt(xpos, ir.ODCLFUNC, nil, nil)     -> ir.NewFunc(xpos)
	ir.NodAt(xpos, ir.ODEFER, l, nil)         -> ir.NewGoDeferStmt(xpos, ir.ODEFER, l)
	ir.NodAt(xpos, ir.OGO, l, nil)            -> ir.NewGoDeferStmt(xpos, ir.OGO, l)
	ir.NodAt(xpos, ir.ODEREF, l, nil)         -> ir.NewStarExpr(xpos, l)
	ir.NodAt(xpos, ir.ODOT, l, nil)           -> ir.NewSelectorExpr(xpos, ir.ODOT, l, nil)
	ir.NodAt(xpos, ir.ODOTPTR, l, nil)        -> ir.NewSelectorExpr(xpos, ir.ODOTPTR, l, nil)
	ir.NodAt(xpos, ir.ODOTMETH, l, nil)       -> ir.NewSelectorExpr(xpos, ir.ODOTMETH, l, nil)
	ir.NodAt(xpos, ir.ODOTINTER, l, nil)      -> ir.NewSelectorExpr(xpos, ir.ODOTINTER, l, nil)
	ir.NodAt(xpos, ir.OXDOT, l, nil)          -> ir.NewSelectorExpr(xpos, ir.OXDOT, l, nil)
	ir.NodAt(xpos, ir.ODOTTYPE, l, nil)       -> ir.NewTypeAssertExpr(xpos, l, nil)
	ir.NodAt(xpos, ir.ODOTTYPE, l, r)         -> ir.NewTypeAssertExpr(xpos, l, r.(ir.Ntype))
	ir.NodAt(xpos, ir.OFOR, l, r)             -> ir.NewForStmt(xpos, nil, l, r, nil)
	ir.NodAt(xpos, ir.OINDEX, l, r)           -> ir.NewIndexExpr(xpos, l, r)
	ir.NodAt(xpos, ir.OINLMARK, nil, nil)     -> ir.NewInlineMarkStmt(xpos, types.BADWIDTH)
	ir.NodAt(xpos, ir.OKEY, l, r)             -> ir.NewKeyExpr(xpos, l, r)
	ir.NodAt(xpos, ir.OLABEL, nil, nil)       -> ir.NewLabelStmt(xpos, nil)
	ir.NodAt(xpos, ir.OMAKECHAN, l, r)        -> ir.NewMakeExpr(xpos, ir.OMAKECHAN, l, r)
	ir.NodAt(xpos, ir.OMAKEMAP, l, r)         -> ir.NewMakeExpr(xpos, ir.OMAKEMAP, l, r)
	ir.NodAt(xpos, ir.OMAKESLICE, l, r)       -> ir.NewMakeExpr(xpos, ir.OMAKESLICE, l, r)
	ir.NodAt(xpos, ir.OMAKESLICECOPY, l, r)   -> ir.NewMakeExpr(xpos, ir.OMAKESLICECOPY, l, r)
	ir.NodAt(xpos, ir.ONIL, nil, nil)         -> ir.NewNilExpr(xpos)
	ir.NodAt(xpos, ir.OPACK, nil, nil)        -> ir.NewPkgName(xpos, nil, nil)
	ir.NodAt(xpos, ir.OPAREN, l, nil)         -> ir.NewParenExpr(xpos, l)
	ir.NodAt(xpos, ir.ORANGE, nil, r)         -> ir.NewRangeStmt(xpos, nil, r, nil)
	ir.NodAt(xpos, ir.ORESULT, nil, nil)      -> ir.NewResultExpr(xpos, nil, types.BADWIDTH)
	ir.NodAt(xpos, ir.ORETURN, nil, nil)      -> ir.NewReturnStmt(xpos, nil)
	ir.NodAt(xpos, ir.OSELECT, nil, nil)      -> ir.NewSelectStmt(xpos, nil)
	ir.NodAt(xpos, ir.OSEND, l, r)            -> ir.NewSendStmt(xpos, l, r)
	ir.NodAt(xpos, ir.OSLICE, l, nil)         -> ir.NewSliceExpr(xpos, ir.OSLICE, l)
	ir.NodAt(xpos, ir.OSLICEARR, l, nil)      -> ir.NewSliceExpr(xpos, ir.OSLICEARR, l)
	ir.NodAt(xpos, ir.OSLICESTR, l, nil)      -> ir.NewSliceExpr(xpos, ir.OSLICESTR, l)
	ir.NodAt(xpos, ir.OSLICE3, l, nil)        -> ir.NewSliceExpr(xpos, ir.OSLICE3, l)
	ir.NodAt(xpos, ir.OSLICE3ARR, l, nil)     -> ir.NewSliceExpr(xpos, ir.OSLICE3ARR, l)
	ir.NodAt(xpos, ir.OSLICEHEADER, l, nil)   -> ir.NewSliceHeaderExpr(xpos, nil, l, nil, nil)
	ir.NodAt(xpos, ir.OSWITCH, l, nil)        -> ir.NewSwitchStmt(xpos, l, nil)
	ir.NodAt(xpos, ir.OINLCALL, nil, nil)     -> ir.NewInlinedCallExpr(xpos, nil, nil)
}

rm noder.nod noder.nodSym nodSym nodlSym ir.NodAt ir.Nod
'

Change-Id: Ibf1eb708de8463ae74ccc47d7966cc263a18295e
Reviewed-on: https://go-review.googlesource.com/c/go/+/277933
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:37:28 +00:00
Andrew G. Morgan
fd6ba1c8a2 os/signal: fix a deadlock with syscall.AllThreadsSyscall() use
The syscall.AllThreadsSyscall() fixup mechanism needs to cooperate
with signal handling to ensure a notetsleepg() thread can wake up
to run the mDoFixup() function.

Fixes #43149

Change-Id: I6651b25bc44a4de47d3fb71d0293d51aef8b79c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/277434
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Austin Clements <austin@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-23 05:27:04 +00:00
Russ Cox
69cf39089f [dev.regabi] cmd/compile: do not die in early base.FlushErrors
Change-Id: I72bac8a85db14494298059f8efddc5cbbf45f7ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/279214
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 05:03:59 +00:00
Russ Cox
8b1fbd8215 [dev.typeparams] all: merge dev.regabi (6d03cde) into dev.typeparams
Conflicts:

* src/cmd/dist/buildtool.go

Merge List:

* 2020-12-23 6d03cde88a [dev.regabi] cmd/dist: automatically bootstrap cmd subdirs

Change-Id: I44ecf3dd626cbd8d0b4cd1616edfd6f3db62029b
2020-12-22 23:27:17 -05:00
Matthew Dempsky
6d03cde88a [dev.regabi] cmd/dist: automatically bootstrap cmd subdirs
We want almost all cmd subdirectories anyway, and relative to the cost
of the rest of toolchain bootstrapping, copying/rewriting a few extra
source files is way cheaper than the engineering cost of forgetting to
maintain these lists as we split out new packages.

While here, also add cmd/internal/archive (and make it compile with Go
1.4) because it'll be needed in subsequent refactorings anyway; and
skip files starting with # (emacs temporary files) and test files
ending with _test.go.

Change-Id: Ic86e680a5fdfaecd617c36d5d04413293b2d6f52
Reviewed-on: https://go-review.googlesource.com/c/go/+/279832
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
2020-12-23 04:20:02 +00:00
Andrew G. Morgan
b0b0d98283 runtime: linux iscgo support for not blocking nptl signals
Under linux+cgo, OS threads are launched via pthread_create().
This abstraction, under linux, requires we avoid blocking
signals 32,33 and 34 indefinitely because they are needed to
reliably execute POSIX-semantics threading in glibc and/or musl.

When blocking signals the go runtime generally re-enables them
quickly. However, when a thread exits (under cgo, this is
via a return from mstart()), we avoid a deadlock in C-code by
not blocking these three signals.

Fixes #42494

Change-Id: I02dfb2480a1f97d11679e0c4b132b51bddbe4c14
Reviewed-on: https://go-review.googlesource.com/c/go/+/269799
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
2020-12-23 02:10:51 +00:00
Russ Cox
23922cf83b [dev.typeparams] all: merge dev.regabi (d1d1099) into dev.typeparams
Merge List:

* 2020-12-23 d1d1099c91 [dev.regabi] cmd/compile: fixes for big rewrite

Change-Id: I245471cf78138eb7848c747002e2eb47c287065b
2020-12-22 20:03:08 -05:00
Russ Cox
788dad53c5 [dev.typeparams] cmd/compile/internal/types2: disable external test temporarily
This is making rf unhappy for extremely subtle reasons,
so for now just disable the external test here. Will reenable
once the big rewrite is done.

Change-Id: Ifd1ba95e2843792427629d1660850fe531cdd0b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/279531
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-23 00:56:02 +00:00
Russ Cox
d1d1099c91 [dev.regabi] cmd/compile: fixes for big rewrite
Adjust the new regabi code a bit to make the rewrites apply cleanly.

Change-Id: Ice5378e94d94ab45ca0572f44ab8c94b847271b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/279530
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 00:51:53 +00:00
Jay Conrod
223331fc0c cmd/go/internal/modload: add hint for missing implicit dependency
By default (and with -mod=readonly), the go command imports an error
if a package provided by an implicitly required module is
imported by a package in the main module. This import requires an
update to go.mod: the module must be required explicitly.

The package loader now provides a hint that 'go get' should be run on
the importing package. This is preferred to 'go get' on the imported
package, since that would add an "// indirect" requirement.

For #43131

Change-Id: I0b353ce8ac8c4ddf1a9863544dfaf6c1964daf42
Reviewed-on: https://go-review.googlesource.com/c/go/+/279528
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-12-22 23:39:46 +00:00
Russ Cox
91cc51e005 [dev.typeparams] all: merge dev.regabi (ec741b0) into dev.typeparams
Conflicts:

* src/cmd/compile/internal/gc/main.go

Merge List:

* 2020-12-22 ec741b0447 [dev.regabi] all: merge master (c9fb4eb) into dev.regabi
* 2020-12-22 acc32ea124 [dev.regabi] codereview.cfg: add config for dev.regabi
* 2020-12-22 c9fb4eb0a2 cmd/link: handle grouped resource sections
* 2020-12-22 c40934b33d [dev.regabi] cmd/compile: adjust one case in walkexpr
* 2020-12-22 280e7fd1ee [dev.regabi] cmd/compile: only access Func method on concrete types
* 2020-12-22 51ba53f5c2 [dev.regabi] cmd/compile: separate misc for gc split
* 2020-12-22 572f168ed2 [dev.regabi] cmd/compile: separate various from Main
* 2020-12-22 3b12c6dc08 [dev.regabi] cmd/compile: separate typecheck more cleanly
* 2020-12-22 7c8f5356ab [dev.regabi] cmd/compile: separate dowidth better
* 2020-12-22 c06a354bcc test: trigger SIGSEGV instead of SIGTRAP in issue11656.go
* 2020-12-22 0aa9b4709a cmd/pack: r command create output file if not exist
* 2020-12-22 cb28c96be8 [dev.regabi] cmd/compile,cmd/link: initial support for ABI wrappers
* 2020-12-22 c8610e4700 [dev.regabi] cmd/compile: add ir.BasicLit to represent literals
* 2020-12-22 3512cde10a [dev.regabi] cmd/compile: stop reusing Ntype for OSLICELIT length
* 2020-12-22 2755361e6a [dev.regabi] cmd/compile: change noder.declNames to returns ir.Names
* 2020-12-22 301af2cb71 [dev.regabi] runtime/race: adjust test pattern match for ABI wrapper
* 2020-12-22 4d27c4c223 runtime: correct error handling in several FreeBSD syscall wrappers
* 2020-12-22 9b6147120a cmd/pack: treat compiler's -linkobj output as "compiler object"
* 2020-12-22 306b2451c8 [dev.regabi] runtime: fix ABI targets in runtime.panic{Index,Slice} shims
* 2020-12-21 bc7e4d9257 syscall: don't generate ptrace on iOS
* 2020-12-21 94cfeca0a5 [dev.regabi] cmd/compile: stop using ONONAME with Name
* 2020-12-21 cb4898a77d [dev.regabi] cmd/compile: simplify declaration importing
* 2020-12-21 06915ac14d [dev.regabi] cmd/compile: move itabname call out of implements
* 2020-12-21 6cff874c47 runtime/metrics: add Read examples
* 2020-12-21 8438a5779b runtime: use _exit on darwin
* 2020-12-21 cb95819cf6 runtime: detect netbsd netpoll overrun in sysmon
* 2020-12-21 53c984d976 runtime: skip wakep call in wakeNetPoller on Plan 9
* 2020-12-21 9abbe27710 test: skip issue11656.go on mips/mips64/ppc64

Change-Id: Ia12a1892195f5e08bb41465374124c71a1a135f6
2020-12-22 17:08:17 -05:00
Russ Cox
ec741b0447 [dev.regabi] all: merge master (c9fb4eb) into dev.regabi
Merge List:

* 2020-12-22 c9fb4eb0a2 cmd/link: handle grouped resource sections
* 2020-12-22 c06a354bcc test: trigger SIGSEGV instead of SIGTRAP in issue11656.go
* 2020-12-22 0aa9b4709a cmd/pack: r command create output file if not exist
* 2020-12-22 4d27c4c223 runtime: correct error handling in several FreeBSD syscall wrappers
* 2020-12-22 9b6147120a cmd/pack: treat compiler's -linkobj output as "compiler object"
* 2020-12-21 bc7e4d9257 syscall: don't generate ptrace on iOS
* 2020-12-21 6cff874c47 runtime/metrics: add Read examples
* 2020-12-21 8438a5779b runtime: use _exit on darwin
* 2020-12-21 cb95819cf6 runtime: detect netbsd netpoll overrun in sysmon
* 2020-12-21 53c984d976 runtime: skip wakep call in wakeNetPoller on Plan 9
* 2020-12-21 9abbe27710 test: skip issue11656.go on mips/mips64/ppc64

Change-Id: Ibb235fbf6a86ebcf50c686dc11f7c02d1865f845
2020-12-22 16:55:15 -05:00
Russ Cox
e02a007ffd [dev.typeparams] codereview.cfg: add config for dev.typeparams
The codereview command will start using this to figure out
the origin branch for commands like "git pending",
and it will use the parent setting for the new "git branch-sync" (merge).

Change-Id: Ia74af18ae5a437fb45ea81d7d69e2ffe41987b64
Reviewed-on: https://go-review.googlesource.com/c/go/+/279523
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-22 21:02:20 +00:00
Russ Cox
acc32ea124 [dev.regabi] codereview.cfg: add config for dev.regabi
Change-Id: Ida5cae7475bc19388fa46ceca25d983f560fa4e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/279524
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-22 21:02:04 +00:00
Jason A. Donenfeld
c9fb4eb0a2 cmd/link: handle grouped resource sections
The Go PE linker does not support enough generalized PE logic to
properly handle .rsrc sections gracefully. Instead a few things are
special cased for these. The linker also does not support PE's "grouped
sections" features, in which input objects have several named sections
that are sorted, merged, and renamed in the output file. In the past,
more sophisticated support for resources or for PE features like grouped
sections have not been necessary, as Go's own object formats are pretty
vanilla, and GNU binutils also produces pretty vanilla objects where all
sections are already merged.

However, GNU binutils is lagging with arm support, and here LLVM has
picked up the slack. In particular, LLVM has its own rc/cvtres combo,
which are glued together in mingw LLVM distributions as windres, a
command line compatible tool with binutils' windres, which supports arm
and arm64. But there's a key difference between binutils' windres and
LLVM's windres: the LLVM one uses proper grouped sections.

So, this commit adds grouped sections support for resource sections to
the linker. We don't attempt to plumb generic support for grouped
sections, just as there isn't generic support already for what resources
require. Instead we augment the resource handling logic to deal with
standard two-section resource objects.

We also add a test for this, akin to the current test for more vanilla
binutils resource objects, and make sure that the rsrc tests are always
performed.

Fixes #42866.
Fixes #43182.

Change-Id: I059450021405cdf2ef1c195ddbab3960764ad711
Reviewed-on: https://go-review.googlesource.com/c/go/+/268337
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
2020-12-22 20:00:00 +00:00
Russ Cox
c40934b33d [dev.regabi] cmd/compile: adjust one case in walkexpr
The mid-case n := n.(*ir.AssignExpr) does not lend itself
well to pulling the code into a new function, because n will
be a function argument and will not be redeclarable.

Change-Id: I673f2aa37eea64b083725326ed3fa36447bcc7af
Reviewed-on: https://go-review.googlesource.com/c/go/+/279426
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-22 19:45:35 +00:00
Russ Cox
280e7fd1ee [dev.regabi] cmd/compile: only access Func method on concrete types
Sets up for removing Func from Node interface.
That means that once the Name reorg is done,
which will let us remove Name, Sym, and Val,
Node will be basically a minimal interface.

Passes buildall w/ toolstash -cmp.

Change-Id: I6e87897572debd7f8e29b4f5167763dc2792b408
Reviewed-on: https://go-review.googlesource.com/c/go/+/279484
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-22 19:32:21 +00:00
Russ Cox
51ba53f5c2 [dev.regabi] cmd/compile: separate misc for gc split
Misc cleanup for splitting package gc: API tweaks
and boundary adjustments.

The change in ir.NewBlockStmt makes it a drop-in
replacement for liststmt.

Change-Id: I9455fe8ccae7d71fe8ccf390ac96672389bf4f3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/279305
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-22 19:32:16 +00:00
Russ Cox
572f168ed2 [dev.regabi] cmd/compile: separate various from Main
Move various code out of Main itself and into helper functions
that can be moved into other packages as package gc splits up.

Similarly, move order and instrument inside walk to reduce the amount
of API surface needed from the eventual package walk.

Change-Id: I7849258038c6e39625a0385af9c0edd6a3b654a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/279304
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-22 19:32:10 +00:00
Russ Cox
3b12c6dc08 [dev.regabi] cmd/compile: separate typecheck more cleanly
Abstract the typecheck API a bit more so that it is
easier to move into a new package.

Change-Id: Ia0a0146151fa7f6073113e68a2c3f6e42a5d0ad8
Reviewed-on: https://go-review.googlesource.com/c/go/+/279303
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-22 19:32:03 +00:00
Russ Cox
7c8f5356ab [dev.regabi] cmd/compile: separate dowidth better
Having a global MaxWidth lets us avoid needing to
refer to thearch from split-out packages when all
they need is thearch.MAXWIDTH.

And make a couple interface changes to let dowidth
avoid importing package ir directly.
Then it can move into package types.

Change-Id: I2c12e8e22252597530e648848320e19bdd490a01
Reviewed-on: https://go-review.googlesource.com/c/go/+/279302
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-22 19:31:57 +00:00
Cherry Zhang
c06a354bcc test: trigger SIGSEGV instead of SIGTRAP in issue11656.go
In issue11656.go, it tests that if the runtime can get a
reasonable traceback when it faults at a non-function PC. It does
it by jumping to an address that contains an illegal or trap
instruction. When it traps, the SIGTRAP crashes the runtime.

This CL changes it to use an instruction that triggers SIGSEGV.
This is due to two reasons:
- currently, the handling of bad PC is done by preparePanic,
  which is only used for a panicking signal (SIGSEGV, SIGBUS,
  SIGFPE), not a fatal signal (e.g. SIGTRAP).
- the test uses defer+recover to get a traceback, which only
  works for panicking signals, not fatal signals.

Ideally, we should handle all kinds of faults (SIGSEGV, SIGBUS,
SIGILL, SIGTRAP, etc.) with a nice traceback. I'll leave this
for the future.

This CL also adds RISCV64 support.

Fixes #43283.

Change-Id: I5e0fbf8530cc89d16e05c3257d282bc1d4d03405
Reviewed-on: https://go-review.googlesource.com/c/go/+/279423
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-22 18:36:29 +00:00
Cherry Zhang
0aa9b4709a cmd/pack: r command create output file if not exist
Go 1.15 pack's r command creates the output file if it does not
exist. The system "ar" command does this as well. Do the same.

For bazelbuild/rules_go#2762.

Change-Id: Icd88396b5c714b735c859a29ab29851e4301f4d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/279516
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-22 18:16:54 +00:00
Than McIntosh
cb28c96be8 [dev.regabi] cmd/compile,cmd/link: initial support for ABI wrappers
Add compiler support for emitting ABI wrappers by creating real IR as
opposed to introducing ABI aliases. At the moment these are "no-op"
wrappers in the sense that they make a simple call (using the existing
ABI) to their target. The assumption here is that once late call
expansion can handle both ABI0 and the "new" ABIInternal (register
version), it can expand the call to do the right thing.

Note that the runtime contains functions that do not strictly follow
the rules of the current Go ABI0; this has been handled in most cases
by treating these as ABIInternal instead (these changes have been made
in previous patches).

Generation of ABI wrappers (as opposed to ABI aliases) is currently
gated by GOEXPERIMENT=regabi -- wrapper generation is on by default if
GOEXPERIMENT=regabi is set and off otherwise (but can be turned on
using "-gcflags=all=-abiwrap -ldflags=-abiwrap"). Wrapper generation
currently only workd on AMD64; explicitly enabling wrapper for other
architectures (via the command line) is not supported.

Also in this patch are a few other command line options for debugging
(tracing and/or limiting wrapper creation). These will presumably go
away at some point.

Updates #27539, #40724.

Change-Id: I1ee3226fc15a3c32ca2087b8ef8e41dbe6df4a75
Reviewed-on: https://go-review.googlesource.com/c/go/+/270863
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
2020-12-22 18:13:48 +00:00
Robert Griesemer
41e7901ca4 [dev.typeparams] cmd/compile/internal/types2: report error for invalid main function signature
Updates #43308.

Change-Id: I2caff83f304c7e104edda76ac3623cce9fc94a8d
Reviewed-on: https://go-review.googlesource.com/c/go/+/279552
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-22 17:51:21 +00:00
Robert Griesemer
53c4c17b09 [dev.typeparams] all: merge dev.regabi into dev.typeparams
The files below had conflicts that required manual resolution.
The unresolved conflict in noder.go was just in the import
declaration (trivial). All the other conflicts are in tests
where the ERROR regex patterns changed to accomodate gccgo
error messages (incoming from dev.regabi), and to accomodate
types2 in dev.typeparams. They were resolved by accepting the
dev.regabi changes (so as not to lose them) and then by re-
applying whatever changes needed to make them pass with types2.
Finally, the new test mainsig.go was excluded from run.go when
using types2 due to issue #43308.

	src/cmd/compile/internal/gc/noder.go
	test/fixedbugs/bug13343.go
	test/fixedbugs/bug462.go
	test/fixedbugs/issue10975.go
	test/fixedbugs/issue11326.go
	test/fixedbugs/issue11361.go
	test/fixedbugs/issue11371.go
	test/fixedbugs/issue11674.go
	test/fixedbugs/issue13365.go
	test/fixedbugs/issue13471.go
	test/fixedbugs/issue14136.go
	test/fixedbugs/issue14321.go
	test/fixedbugs/issue14729.go
	test/fixedbugs/issue15898.go
	test/fixedbugs/issue16439.go
	test/fixedbugs/issue17588.go
	test/fixedbugs/issue19323.go
	test/fixedbugs/issue19482.go
	test/fixedbugs/issue19880.go
	test/fixedbugs/issue20185.go
	test/fixedbugs/issue20227.go
	test/fixedbugs/issue20415.go
	test/fixedbugs/issue20749.go
	test/fixedbugs/issue22794.go
	test/fixedbugs/issue22822.go
	test/fixedbugs/issue22921.go
	test/fixedbugs/issue23823.go
	test/fixedbugs/issue25727.go
	test/fixedbugs/issue26616.go
	test/fixedbugs/issue28079c.go
	test/fixedbugs/issue28450.go
	test/fixedbugs/issue30085.go
	test/fixedbugs/issue30087.go
	test/fixedbugs/issue35291.go
	test/fixedbugs/issue38745.go
	test/fixedbugs/issue41247.go
	test/fixedbugs/issue41440.go
	test/fixedbugs/issue41500.go
	test/fixedbugs/issue4215.go
	test/fixedbugs/issue6402.go
	test/fixedbugs/issue6772.go
	test/fixedbugs/issue7129.go
	test/fixedbugs/issue7150.go
	test/fixedbugs/issue7153.go
	test/fixedbugs/issue7310.go
	test/fixedbugs/issue8183.go
	test/fixedbugs/issue8385.go
	test/fixedbugs/issue8438.go
	test/fixedbugs/issue8440.go
	test/fixedbugs/issue8507.go
	test/fixedbugs/issue9370.go
	test/fixedbugs/issue9521.go

Change-Id: I26e6e326fde6e3fca5400711a253834d710ab7f4
2020-12-22 17:50:13 +00:00
Matthew Dempsky
c8610e4700 [dev.regabi] cmd/compile: add ir.BasicLit to represent literals
This CL changes so that all literals are represented with a new,
smaller ir.BasicLit type, so that ir.Name is only used to represent
declared constants.

Passes buildall w/ toolstash -cmp.

Change-Id: I4702b8e3fa945617bd05881d7a2be1205f229633
Reviewed-on: https://go-review.googlesource.com/c/go/+/279153
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-22 17:04:46 +00:00
Matthew Dempsky
3512cde10a [dev.regabi] cmd/compile: stop reusing Ntype for OSLICELIT length
For OSLICELITs, we were reusing the Ntype field after type checking to
hold the length of the OSLICELIT's backing array. However, Ntype is
only meant for nodes that can represent types. Today, this works only
because we currently use Name for all OLITERAL constants (whether
declared or not), whereas we should be able to represent them more
compactly with a dedicated type that doesn't implement Ntype.

Passes buildall w/ toolstash -cmp.

Change-Id: I385f1d787c41b016f507a5bad9489d59ccfde7f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/279152
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-22 17:04:18 +00:00
Matthew Dempsky
2755361e6a [dev.regabi] cmd/compile: change noder.declNames to returns ir.Names
declNames always returns a slice of *ir.Names, so return that directly
rather than as []ir.Node.

While here, also change iimport to directly create ir.ODCL/ir.OAS
statements, rather than calling variter. Allows eliminating a use of
ir.TypeNode.

Passes buildall w/ toolstash -cmp.

Change-Id: Icb75e993c4957b6050c797ba64ee71cfb7a19644
Reviewed-on: https://go-review.googlesource.com/c/go/+/279315
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-22 17:04:04 +00:00
Than McIntosh
301af2cb71 [dev.regabi] runtime/race: adjust test pattern match for ABI wrapper
Adjust the pattern matching in one of the race output test to allow
for the possible introduction of an ABI wrapper. Normally for tests
that match traceback output wrappers are not an issue since they
are screened out by Go's traceback mechanism, but in this case the
race runtime is doing the unwinding, so the wrapper may be visible.

Change-Id: I45413b5c4701d4c28cc760fccc8203493dbe2874
Reviewed-on: https://go-review.googlesource.com/c/go/+/278756
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
2020-12-22 16:35:20 +00:00
Nikhil Benesch
4d27c4c223 runtime: correct error handling in several FreeBSD syscall wrappers
The FreeBSD syscall convention uses the carry flag to indicate whether
an error has occured. The sys_umtx_op, thr_new, and pipe2 syscall
wrappers were failing to account for this convention and silently
suppressing errors as a result. This commit corrects these wrappers
by copying the pattern used by the other fallible syscall wrappers.

Note that futexsleep1 must now explicitly ignore the ETIMEDOUT error
from sys_umtx_op. Previously ETIMEDOUT was implicitly ignored because
sys_umtx_op never returned an error.

Fixes #43106.

Change-Id: I9c422b87cf4c6d308003bf42c3b419f785578b5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/276892
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Trust: Than McIntosh <thanm@google.com>
2020-12-22 15:59:17 +00:00
Cherry Zhang
9b6147120a cmd/pack: treat compiler's -linkobj output as "compiler object"
Treat the compiler's -linkobj output as "compiler object, which
means "pack c" will "see through" the file and add individual
entry to the new archive, instead of the object as a whole.

This is somewhat peculiar. But Go 1.15's cmd/pack does this,
although seemingly accidental. We just do the same. FWIW, it
does make things more consistent with/without -linkobj flag.

Fixes #43271.

Change-Id: I6b2d99256db7ebf0fa430f85afa7464e334f6bcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/279483
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-22 15:50:18 +00:00
Than McIntosh
306b2451c8 [dev.regabi] runtime: fix ABI targets in runtime.panic{Index,Slice} shims
Fix up the assembly shim routines runtime.panic{Index,Slice} and
friends so that their tail calls target ABIInternal and not ABI0
functions. This is so as to ensure that these calls don't go through
an ABI0->ABIInternal wrapper (which would throw off the machinery in
the called routines designed to detect whether the violation happened
in the runtime).

Note that when the compiler starts emitting real register calls to
these routines, we'll need to rewrite them to update the arg size and
ensure that args are in the correct registers. For example, the
current shim

TEXT runtime·panicIndex<ABIInternal>(SB),NOSPLIT,$0-16
	MOVQ	AX, x+0(FP)
	MOVQ	CX, y+8(FP)
	JMP	runtime·goPanicIndex<ABIInternal>(SB)

will need to change to

TEXT runtime·panicIndex<ABIInternal>(SB),NOSPLIT,$0
	// AX already set up properly
	MOVQ	CX, BX // second argument expected in BX
	JMP	runtime·goPanicIndex<ABIInternal>(SB)

Change-Id: I48d1b5138fb4d229380ad12735cfaca5c50e6cc3
Reviewed-on: https://go-review.googlesource.com/c/go/+/278755
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
2020-12-22 14:50:50 +00:00
Cherry Zhang
bc7e4d9257 syscall: don't generate ptrace on iOS
May fix #43302.

Change-Id: I6b7ddf94495c4fa80cf8a50a38eef5f8b2872669
Reviewed-on: https://go-review.googlesource.com/c/go/+/279481
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-21 21:48:47 +00:00
Matthew Dempsky
94cfeca0a5 [dev.regabi] cmd/compile: stop using ONONAME with Name
This CL changes NewDeclNameAt to take an Op argument to set the Op up
front, and updates all callers to provide the appropriate Op. This
allows dropping the Name.SetOp method.

Passes buildall w/ toolstash -cmp.

Change-Id: I20e580f62d3c8a81223d1c162327c11b37bbf3f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/279314
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-21 19:42:21 +00:00
Matthew Dempsky
cb4898a77d [dev.regabi] cmd/compile: simplify declaration importing
Rather than creating Names w/ ONONAME earlier and later adding in the
details, this CL changes the import logic to create and add details at
the same time.

Passes buildall w/ toolstash -cmp.

Change-Id: Ifaabade3cef8cd80ddd6644bff79393b934255d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/279313
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-21 19:42:00 +00:00
Matthew Dempsky
06915ac14d [dev.regabi] cmd/compile: move itabname call out of implements
We only need to call itabname when actually creating the OCONVIFACE
ops, not any time we test whether a type implements an
interface. Additionally, by moving this call out of implements, we
make it purely based on types, which makes it safe to move to package
types.

Does not pass toolstash -cmp, because it shuffles symbol creation
order.

Change-Id: Iea8e0c9374218f4d97b4339020ebd758d051bd03
Reviewed-on: https://go-review.googlesource.com/c/go/+/279333
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
2020-12-21 19:41:21 +00:00
Michael Anthony Knyszek
6cff874c47 runtime/metrics: add Read examples
This change adds two examples of using the Read function: one that reads
one metric and one that reads all metrics.

Change-Id: I4940a44c9b1d65f3f7a1554e3145ff07e6492fc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/275855
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
2020-12-21 19:28:12 +00:00