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https://github.com/golang/go
synced 2024-11-11 22:10:22 -07:00
cmd/compile: disallow rewrite rules from declaring reserved names
If I change a rule in ARM64.rules to use the variable name "b" in a conflicting way, rulegen would previously not complain, and the compiler would later give a confusing error: $ go run *.go && go build cmd/compile/internal/ssa # cmd/compile/internal/ssa ../rewriteARM64.go:24236:10: b.NewValue0 undefined (type int64 has no field or method NewValue0) Make rulegen complain early about those cases. Sometimes they might happen to be harmless, but in general they can easily cause confusion or unintended effect due to shadowing. After the change, with the same conflicting rule: $ go run *.go && go build cmd/compile/internal/ssa 2021/03/22 11:31:49 rule ARM64.rules:495 uses the reserved name b exit status 1 Note that 24 existing rules were using reserved names. It seems like the shadowing was harmless, as it wasn't causing typechecking issues nor did it seem to cause unintended behavior when the rule rewrite code ran. The bool values "b" were renamed "t", since that seems to have a precedent in other rules and in the fmt package. Sequential values like "a b c" were renamed to "x y z", since "b" is reserved. Finally, "typ" was renamed to "_typ", since there doesn't seem to be an obviously better answer. Passes all three of: $ GOARCH=amd64 go build -toolexec 'toolstash -cmp' -a std $ GOARCH=arm64 go build -toolexec 'toolstash -cmp' -a std $ GOARCH=mips64 go build -toolexec 'toolstash -cmp' -a std Fixes #45154. Change-Id: I1cce194dc7b477886a9c218c17973e996bcedccf Reviewed-on: https://go-review.googlesource.com/c/go/+/303549 Trust: Daniel Martí <mvdan@mvdan.cc> Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Daniel Martí
parent
bd8b3fe5be
commit
5437b5a24b
@ -173,7 +173,7 @@
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(Const(8|16|32) [val]) => (MOVWconst [int32(val)])
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(Const(32|64)F [val]) => (MOV(F|D)const [float64(val)])
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(ConstNil) => (MOVWconst [0])
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(ConstBool [b]) => (MOVWconst [b2i32(b)])
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(ConstBool [t]) => (MOVWconst [b2i32(t)])
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// truncations
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// Because we ignore high parts of registers, truncates are just copies.
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@ -198,7 +198,7 @@
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(Const(64|32|16|8) [val]) => (MOVDconst [int64(val)])
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(Const(32F|64F) [val]) => (FMOV(S|D)const [float64(val)])
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(ConstNil) => (MOVDconst [0])
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(ConstBool [b]) => (MOVDconst [b2i(b)])
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(ConstBool [t]) => (MOVDconst [b2i(t)])
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(Slicemask <t> x) => (SRAconst (NEG <t> x) [63])
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@ -144,7 +144,7 @@
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(Const(32|16|8) [val]) => (MOVWconst [int32(val)])
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(Const(32|64)F ...) => (MOV(F|D)const ...)
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(ConstNil) => (MOVWconst [0])
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(ConstBool [b]) => (MOVWconst [b2i32(b)])
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(ConstBool [t]) => (MOVWconst [b2i32(t)])
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// truncations
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// Because we ignore high parts of registers, truncates are just copies.
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@ -134,7 +134,7 @@
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(Const(64|32|16|8) [val]) => (MOVVconst [int64(val)])
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(Const(32|64)F [val]) => (MOV(F|D)const [float64(val)])
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(ConstNil) => (MOVVconst [0])
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(ConstBool [b]) => (MOVVconst [int64(b2i(b))])
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(ConstBool [t]) => (MOVVconst [int64(b2i(t))])
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(Slicemask <t> x) => (SRAVconst (NEGV <t> x) [63])
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@ -101,7 +101,7 @@
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(Const(64|32|16|8) [val]) => (MOVDconst [int64(val)])
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(Const(32|64)F ...) => (FMOV(S|D)const ...)
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(ConstNil) => (MOVDconst [0])
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(ConstBool [b]) => (MOVDconst [b2i(b)])
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(ConstBool [t]) => (MOVDconst [b2i(t)])
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// Constant folding
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(FABS (FMOVDconst [x])) => (FMOVDconst [math.Abs(x)])
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@ -428,7 +428,7 @@
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(Const(64|32|16|8) [val]) => (MOVDconst [int64(val)])
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(Const(32|64)F ...) => (FMOV(S|D)const ...)
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(ConstNil) => (MOVDconst [0])
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(ConstBool [b]) => (MOVDconst [b2i(b)])
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(ConstBool [t]) => (MOVDconst [b2i(t)])
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// Lowering calls
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(StaticCall ...) => (CALLstatic ...)
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@ -768,7 +768,7 @@
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=> mem
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// Collapse OffPtr
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(OffPtr (OffPtr p [b]) [a]) => (OffPtr p [a+b])
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(OffPtr (OffPtr p [y]) [x]) => (OffPtr p [x+y])
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(OffPtr p [0]) && v.Type.Compare(p.Type) == types.CMPeq => p
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// indexing operations
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@ -847,7 +847,7 @@
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f0 mem))))
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// Putting struct{*byte} and similar into direct interfaces.
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(IMake typ (StructMake1 val)) => (IMake typ val)
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(IMake _typ (StructMake1 val)) => (IMake _typ val)
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(StructSelect [0] (IData x)) => (IData x)
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// un-SSAable values use mem->mem copies
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@ -869,7 +869,7 @@
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(Store dst (ArrayMake1 e) mem) => (Store {e.Type} dst e mem)
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// Putting [1]*byte and similar into direct interfaces.
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(IMake typ (ArrayMake1 val)) => (IMake typ val)
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(IMake _typ (ArrayMake1 val)) => (IMake _typ val)
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(ArraySelect [0] (IData x)) => (IData x)
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// string ops
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@ -1974,9 +1974,9 @@
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(Sqrt (Const64F [c])) && !math.IsNaN(math.Sqrt(c)) => (Const64F [math.Sqrt(c)])
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// for rewriting results of some late-expanded rewrites (below)
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(SelectN [0] (MakeResult a ___)) => a
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(SelectN [1] (MakeResult a b ___)) => b
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(SelectN [2] (MakeResult a b c ___)) => c
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(SelectN [0] (MakeResult x ___)) => x
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(SelectN [1] (MakeResult x y ___)) => y
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(SelectN [2] (MakeResult x y z ___)) => z
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// for late-expanded calls, recognize newobject and remove zeroing and nilchecks
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(Zero (SelectN [0] call:(StaticLECall _ _)) mem:(SelectN [1] call))
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@ -2013,18 +2013,18 @@
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// Evaluate constant address comparisons.
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(EqPtr x x) => (ConstBool [true])
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(NeqPtr x x) => (ConstBool [false])
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(EqPtr (Addr {a} _) (Addr {b} _)) => (ConstBool [a == b])
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(EqPtr (Addr {a} _) (OffPtr [o] (Addr {b} _))) => (ConstBool [a == b && o == 0])
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(EqPtr (OffPtr [o1] (Addr {a} _)) (OffPtr [o2] (Addr {b} _))) => (ConstBool [a == b && o1 == o2])
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(NeqPtr (Addr {a} _) (Addr {b} _)) => (ConstBool [a != b])
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(NeqPtr (Addr {a} _) (OffPtr [o] (Addr {b} _))) => (ConstBool [a != b || o != 0])
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(NeqPtr (OffPtr [o1] (Addr {a} _)) (OffPtr [o2] (Addr {b} _))) => (ConstBool [a != b || o1 != o2])
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(EqPtr (LocalAddr {a} _ _) (LocalAddr {b} _ _)) => (ConstBool [a == b])
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(EqPtr (LocalAddr {a} _ _) (OffPtr [o] (LocalAddr {b} _ _))) => (ConstBool [a == b && o == 0])
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(EqPtr (OffPtr [o1] (LocalAddr {a} _ _)) (OffPtr [o2] (LocalAddr {b} _ _))) => (ConstBool [a == b && o1 == o2])
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(NeqPtr (LocalAddr {a} _ _) (LocalAddr {b} _ _)) => (ConstBool [a != b])
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(NeqPtr (LocalAddr {a} _ _) (OffPtr [o] (LocalAddr {b} _ _))) => (ConstBool [a != b || o != 0])
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(NeqPtr (OffPtr [o1] (LocalAddr {a} _ _)) (OffPtr [o2] (LocalAddr {b} _ _))) => (ConstBool [a != b || o1 != o2])
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(EqPtr (Addr {x} _) (Addr {y} _)) => (ConstBool [x == y])
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(EqPtr (Addr {x} _) (OffPtr [o] (Addr {y} _))) => (ConstBool [x == y && o == 0])
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(EqPtr (OffPtr [o1] (Addr {x} _)) (OffPtr [o2] (Addr {y} _))) => (ConstBool [x == y && o1 == o2])
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(NeqPtr (Addr {x} _) (Addr {y} _)) => (ConstBool [x != y])
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(NeqPtr (Addr {x} _) (OffPtr [o] (Addr {y} _))) => (ConstBool [x != y || o != 0])
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(NeqPtr (OffPtr [o1] (Addr {x} _)) (OffPtr [o2] (Addr {y} _))) => (ConstBool [x != y || o1 != o2])
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(EqPtr (LocalAddr {x} _ _) (LocalAddr {y} _ _)) => (ConstBool [x == y])
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(EqPtr (LocalAddr {x} _ _) (OffPtr [o] (LocalAddr {y} _ _))) => (ConstBool [x == y && o == 0])
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(EqPtr (OffPtr [o1] (LocalAddr {x} _ _)) (OffPtr [o2] (LocalAddr {y} _ _))) => (ConstBool [x == y && o1 == o2])
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(NeqPtr (LocalAddr {x} _ _) (LocalAddr {y} _ _)) => (ConstBool [x != y])
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(NeqPtr (LocalAddr {x} _ _) (OffPtr [o] (LocalAddr {y} _ _))) => (ConstBool [x != y || o != 0])
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(NeqPtr (OffPtr [o1] (LocalAddr {x} _ _)) (OffPtr [o2] (LocalAddr {y} _ _))) => (ConstBool [x != y || o1 != o2])
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(EqPtr (OffPtr [o1] p1) p2) && isSamePtr(p1, p2) => (ConstBool [o1 == 0])
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(NeqPtr (OffPtr [o1] p1) p2) && isSamePtr(p1, p2) => (ConstBool [o1 != 0])
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(EqPtr (OffPtr [o1] p1) (OffPtr [o2] p2)) && isSamePtr(p1, p2) => (ConstBool [o1 == o2])
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@ -218,10 +218,10 @@ func genRulesSuffix(arch arch, suff string) {
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Suffix: fmt.Sprintf("_%s", op),
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ArgLen: opByName(arch, op).argLength,
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}
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fn.add(declf("b", "v.Block"))
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fn.add(declf("config", "b.Func.Config"))
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fn.add(declf("fe", "b.Func.fe"))
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fn.add(declf("typ", "&b.Func.Config.Types"))
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fn.add(declReserved("b", "v.Block"))
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fn.add(declReserved("config", "b.Func.Config"))
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fn.add(declReserved("fe", "b.Func.fe"))
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fn.add(declReserved("typ", "&b.Func.Config.Types"))
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for _, rule := range rules {
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if rr != nil && !rr.CanFail {
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log.Fatalf("unconditional rule %s is followed by other rules", rr.Match)
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@ -250,8 +250,8 @@ func genRulesSuffix(arch arch, suff string) {
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// Generate block rewrite function. There are only a few block types
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// so we can make this one function with a switch.
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fn = &Func{Kind: "Block"}
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fn.add(declf("config", "b.Func.Config"))
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fn.add(declf("typ", "&b.Func.Config.Types"))
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fn.add(declReserved("config", "b.Func.Config"))
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fn.add(declReserved("typ", "&b.Func.Config.Types"))
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sw = &Switch{Expr: exprf("b.Kind")}
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ops = ops[:0]
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@ -828,12 +828,36 @@ func stmtf(format string, a ...interface{}) Statement {
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return file.Decls[0].(*ast.FuncDecl).Body.List[0]
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}
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// declf constructs a simple "name := value" declaration, using exprf for its
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// value.
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func declf(name, format string, a ...interface{}) *Declare {
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var reservedNames = map[string]bool{
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"v": true, // Values[i], etc
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"b": true, // v.Block
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"config": true, // b.Func.Config
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"fe": true, // b.Func.fe
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"typ": true, // &b.Func.Config.Types
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}
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// declf constructs a simple "name := value" declaration,
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// using exprf for its value.
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//
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// name must not be one of reservedNames.
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// This helps prevent unintended shadowing and name clashes.
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// To declare a reserved name, use declReserved.
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func declf(loc, name, format string, a ...interface{}) *Declare {
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if reservedNames[name] {
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log.Fatalf("rule %s uses the reserved name %s", loc, name)
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}
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return &Declare{name, exprf(format, a...)}
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}
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// declReserved is like declf, but the name must be one of reservedNames.
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// Calls to declReserved should generally be static and top-level.
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func declReserved(name, value string) *Declare {
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if !reservedNames[name] {
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panic(fmt.Sprintf("declReserved call does not use a reserved name: %q", name))
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}
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return &Declare{name, exprf(value)}
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}
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// breakf constructs a simple "if cond { break }" statement, using exprf for its
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// condition.
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func breakf(format string, a ...interface{}) *CondBreak {
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@ -858,7 +882,7 @@ func genBlockRewrite(rule Rule, arch arch, data blockData) *RuleRewrite {
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if vname == "" {
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vname = fmt.Sprintf("v_%v", i)
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}
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rr.add(declf(vname, cname))
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rr.add(declf(rr.Loc, vname, cname))
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p, op := genMatch0(rr, arch, expr, vname, nil, false) // TODO: pass non-nil cnt?
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if op != "" {
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check := fmt.Sprintf("%s.Op == %s", cname, op)
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@ -873,7 +897,7 @@ func genBlockRewrite(rule Rule, arch arch, data blockData) *RuleRewrite {
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}
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pos[i] = p
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} else {
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rr.add(declf(arg, cname))
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rr.add(declf(rr.Loc, arg, cname))
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pos[i] = arg + ".Pos"
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}
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}
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@ -893,7 +917,7 @@ func genBlockRewrite(rule Rule, arch arch, data blockData) *RuleRewrite {
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if !token.IsIdentifier(e.name) || rr.declared(e.name) {
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rr.add(breakf("%sTo%s(b.%s) != %s", unTitle(e.field), title(e.dclType), e.field, e.name))
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} else {
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rr.add(declf(e.name, "%sTo%s(b.%s)", unTitle(e.field), title(e.dclType), e.field))
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rr.add(declf(rr.Loc, e.name, "%sTo%s(b.%s)", unTitle(e.field), title(e.dclType), e.field))
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}
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}
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if rr.Cond != "" {
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@ -1043,11 +1067,11 @@ func genMatch0(rr *RuleRewrite, arch arch, match, v string, cnt map[string]int,
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} else {
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switch e.field {
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case "Aux":
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rr.add(declf(e.name, "auxTo%s(%s.%s)", title(e.dclType), v, e.field))
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rr.add(declf(rr.Loc, e.name, "auxTo%s(%s.%s)", title(e.dclType), v, e.field))
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case "AuxInt":
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rr.add(declf(e.name, "auxIntTo%s(%s.%s)", title(e.dclType), v, e.field))
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rr.add(declf(rr.Loc, e.name, "auxIntTo%s(%s.%s)", title(e.dclType), v, e.field))
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case "Type":
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rr.add(declf(e.name, "%s.%s", v, e.field))
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rr.add(declf(rr.Loc, e.name, "%s.%s", v, e.field))
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}
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}
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}
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@ -1077,7 +1101,7 @@ func genMatch0(rr *RuleRewrite, arch arch, match, v string, cnt map[string]int,
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continue
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}
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if !rr.declared(a) && token.IsIdentifier(a) && !(commutative && len(args) == 2) {
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rr.add(declf(a, "%s.Args[%d]", v, n))
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rr.add(declf(rr.Loc, a, "%s.Args[%d]", v, n))
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// delete the last argument so it is not reprocessed
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args = args[:n]
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} else {
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@ -1089,7 +1113,7 @@ func genMatch0(rr *RuleRewrite, arch arch, match, v string, cnt map[string]int,
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if commutative && !pregenTop {
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for i := 0; i <= 1; i++ {
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vname := fmt.Sprintf("%s_%d", v, i)
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rr.add(declf(vname, "%s.Args[%d]", v, i))
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rr.add(declf(rr.Loc, vname, "%s.Args[%d]", v, i))
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}
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}
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if commutative {
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@ -1116,7 +1140,7 @@ func genMatch0(rr *RuleRewrite, arch arch, match, v string, cnt map[string]int,
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rr.add(breakf("%s != %s", arg, rhs))
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} else {
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if arg != rhs {
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rr.add(declf(arg, "%s", rhs))
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rr.add(declf(rr.Loc, arg, "%s", rhs))
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}
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}
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continue
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@ -1131,7 +1155,7 @@ func genMatch0(rr *RuleRewrite, arch arch, match, v string, cnt map[string]int,
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}
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if argname != rhs {
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rr.add(declf(argname, "%s", rhs))
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rr.add(declf(rr.Loc, argname, "%s", rhs))
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}
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bexpr := exprf("%s.Op != addLater", argname)
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rr.add(&CondBreak{Cond: bexpr})
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@ -1208,7 +1232,7 @@ func genResult0(rr *RuleRewrite, arch arch, result string, top, move bool, pos s
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v = resname
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}
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rr.Alloc++
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rr.add(declf(v, "b.NewValue0(%s, Op%s%s, %s)", pos, oparch, op.name, typ))
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rr.add(declf(rr.Loc, v, "b.NewValue0(%s, Op%s%s, %s)", pos, oparch, op.name, typ))
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if move && top {
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// Rewrite original into a copy
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rr.add(stmtf("v.copyOf(%s)", v))
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@ -13031,12 +13031,12 @@ func rewriteValueARM_OpConst8(v *Value) bool {
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}
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}
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func rewriteValueARM_OpConstBool(v *Value) bool {
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// match: (ConstBool [b])
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// result: (MOVWconst [b2i32(b)])
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// match: (ConstBool [t])
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// result: (MOVWconst [b2i32(t)])
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for {
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b := auxIntToBool(v.AuxInt)
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t := auxIntToBool(v.AuxInt)
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v.reset(OpARMMOVWconst)
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v.AuxInt = int32ToAuxInt(b2i32(b))
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v.AuxInt = int32ToAuxInt(b2i32(t))
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return true
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}
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}
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@ -22253,12 +22253,12 @@ func rewriteValueARM64_OpConst8(v *Value) bool {
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}
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}
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func rewriteValueARM64_OpConstBool(v *Value) bool {
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// match: (ConstBool [b])
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// result: (MOVDconst [b2i(b)])
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// match: (ConstBool [t])
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// result: (MOVDconst [b2i(t)])
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for {
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b := auxIntToBool(v.AuxInt)
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t := auxIntToBool(v.AuxInt)
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v.reset(OpARM64MOVDconst)
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v.AuxInt = int64ToAuxInt(b2i(b))
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v.AuxInt = int64ToAuxInt(b2i(t))
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return true
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}
|
||||
}
|
||||
|
||||
@ -872,12 +872,12 @@ func rewriteValueMIPS_OpConst8(v *Value) bool {
|
||||
}
|
||||
}
|
||||
func rewriteValueMIPS_OpConstBool(v *Value) bool {
|
||||
// match: (ConstBool [b])
|
||||
// result: (MOVWconst [b2i32(b)])
|
||||
// match: (ConstBool [t])
|
||||
// result: (MOVWconst [b2i32(t)])
|
||||
for {
|
||||
b := auxIntToBool(v.AuxInt)
|
||||
t := auxIntToBool(v.AuxInt)
|
||||
v.reset(OpMIPSMOVWconst)
|
||||
v.AuxInt = int32ToAuxInt(b2i32(b))
|
||||
v.AuxInt = int32ToAuxInt(b2i32(t))
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
@ -835,12 +835,12 @@ func rewriteValueMIPS64_OpConst8(v *Value) bool {
|
||||
}
|
||||
}
|
||||
func rewriteValueMIPS64_OpConstBool(v *Value) bool {
|
||||
// match: (ConstBool [b])
|
||||
// result: (MOVVconst [int64(b2i(b))])
|
||||
// match: (ConstBool [t])
|
||||
// result: (MOVVconst [int64(b2i(t))])
|
||||
for {
|
||||
b := auxIntToBool(v.AuxInt)
|
||||
t := auxIntToBool(v.AuxInt)
|
||||
v.reset(OpMIPS64MOVVconst)
|
||||
v.AuxInt = int64ToAuxInt(int64(b2i(b)))
|
||||
v.AuxInt = int64ToAuxInt(int64(b2i(t)))
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
@ -1234,12 +1234,12 @@ func rewriteValuePPC64_OpConst8(v *Value) bool {
|
||||
}
|
||||
}
|
||||
func rewriteValuePPC64_OpConstBool(v *Value) bool {
|
||||
// match: (ConstBool [b])
|
||||
// result: (MOVDconst [b2i(b)])
|
||||
// match: (ConstBool [t])
|
||||
// result: (MOVDconst [b2i(t)])
|
||||
for {
|
||||
b := auxIntToBool(v.AuxInt)
|
||||
t := auxIntToBool(v.AuxInt)
|
||||
v.reset(OpPPC64MOVDconst)
|
||||
v.AuxInt = int64ToAuxInt(b2i(b))
|
||||
v.AuxInt = int64ToAuxInt(b2i(t))
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
@ -1321,12 +1321,12 @@ func rewriteValueS390X_OpConst8(v *Value) bool {
|
||||
}
|
||||
}
|
||||
func rewriteValueS390X_OpConstBool(v *Value) bool {
|
||||
// match: (ConstBool [b])
|
||||
// result: (MOVDconst [b2i(b)])
|
||||
// match: (ConstBool [t])
|
||||
// result: (MOVDconst [b2i(t)])
|
||||
for {
|
||||
b := auxIntToBool(v.AuxInt)
|
||||
t := auxIntToBool(v.AuxInt)
|
||||
v.reset(OpS390XMOVDconst)
|
||||
v.AuxInt = int64ToAuxInt(b2i(b))
|
||||
v.AuxInt = int64ToAuxInt(b2i(t))
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
@ -8152,32 +8152,32 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
v.AuxInt = boolToAuxInt(true)
|
||||
return true
|
||||
}
|
||||
// match: (EqPtr (Addr {a} _) (Addr {b} _))
|
||||
// result: (ConstBool [a == b])
|
||||
// match: (EqPtr (Addr {x} _) (Addr {y} _))
|
||||
// result: (ConstBool [x == y])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1.Aux)
|
||||
y := auxToSym(v_1.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a == b)
|
||||
v.AuxInt = boolToAuxInt(x == y)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (EqPtr (Addr {a} _) (OffPtr [o] (Addr {b} _)))
|
||||
// result: (ConstBool [a == b && o == 0])
|
||||
// match: (EqPtr (Addr {x} _) (OffPtr [o] (Addr {y} _)))
|
||||
// result: (ConstBool [x == y && o == 0])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -8186,15 +8186,15 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a == b && o == 0)
|
||||
v.AuxInt = boolToAuxInt(x == y && o == 0)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (EqPtr (OffPtr [o1] (Addr {a} _)) (OffPtr [o2] (Addr {b} _)))
|
||||
// result: (ConstBool [a == b && o1 == o2])
|
||||
// match: (EqPtr (OffPtr [o1] (Addr {x} _)) (OffPtr [o2] (Addr {y} _)))
|
||||
// result: (ConstBool [x == y && o1 == o2])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpOffPtr {
|
||||
@ -8205,7 +8205,7 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
if v_0_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0_0.Aux)
|
||||
x := auxToSym(v_0_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -8214,39 +8214,39 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a == b && o1 == o2)
|
||||
v.AuxInt = boolToAuxInt(x == y && o1 == o2)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (EqPtr (LocalAddr {a} _ _) (LocalAddr {b} _ _))
|
||||
// result: (ConstBool [a == b])
|
||||
// match: (EqPtr (LocalAddr {x} _ _) (LocalAddr {y} _ _))
|
||||
// result: (ConstBool [x == y])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1.Aux)
|
||||
y := auxToSym(v_1.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a == b)
|
||||
v.AuxInt = boolToAuxInt(x == y)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (EqPtr (LocalAddr {a} _ _) (OffPtr [o] (LocalAddr {b} _ _)))
|
||||
// result: (ConstBool [a == b && o == 0])
|
||||
// match: (EqPtr (LocalAddr {x} _ _) (OffPtr [o] (LocalAddr {y} _ _)))
|
||||
// result: (ConstBool [x == y && o == 0])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -8255,15 +8255,15 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a == b && o == 0)
|
||||
v.AuxInt = boolToAuxInt(x == y && o == 0)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (EqPtr (OffPtr [o1] (LocalAddr {a} _ _)) (OffPtr [o2] (LocalAddr {b} _ _)))
|
||||
// result: (ConstBool [a == b && o1 == o2])
|
||||
// match: (EqPtr (OffPtr [o1] (LocalAddr {x} _ _)) (OffPtr [o2] (LocalAddr {y} _ _)))
|
||||
// result: (ConstBool [x == y && o1 == o2])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpOffPtr {
|
||||
@ -8274,7 +8274,7 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
if v_0_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0_0.Aux)
|
||||
x := auxToSym(v_0_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -8283,9 +8283,9 @@ func rewriteValuegeneric_OpEqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a == b && o1 == o2)
|
||||
v.AuxInt = boolToAuxInt(x == y && o1 == o2)
|
||||
return true
|
||||
}
|
||||
break
|
||||
@ -8532,28 +8532,28 @@ func rewriteValuegeneric_OpEqSlice(v *Value) bool {
|
||||
func rewriteValuegeneric_OpIMake(v *Value) bool {
|
||||
v_1 := v.Args[1]
|
||||
v_0 := v.Args[0]
|
||||
// match: (IMake typ (StructMake1 val))
|
||||
// result: (IMake typ val)
|
||||
// match: (IMake _typ (StructMake1 val))
|
||||
// result: (IMake _typ val)
|
||||
for {
|
||||
typ := v_0
|
||||
_typ := v_0
|
||||
if v_1.Op != OpStructMake1 {
|
||||
break
|
||||
}
|
||||
val := v_1.Args[0]
|
||||
v.reset(OpIMake)
|
||||
v.AddArg2(typ, val)
|
||||
v.AddArg2(_typ, val)
|
||||
return true
|
||||
}
|
||||
// match: (IMake typ (ArrayMake1 val))
|
||||
// result: (IMake typ val)
|
||||
// match: (IMake _typ (ArrayMake1 val))
|
||||
// result: (IMake _typ val)
|
||||
for {
|
||||
typ := v_0
|
||||
_typ := v_0
|
||||
if v_1.Op != OpArrayMake1 {
|
||||
break
|
||||
}
|
||||
val := v_1.Args[0]
|
||||
v.reset(OpIMake)
|
||||
v.AddArg2(typ, val)
|
||||
v.AddArg2(_typ, val)
|
||||
return true
|
||||
}
|
||||
return false
|
||||
@ -15710,32 +15710,32 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
v.AuxInt = boolToAuxInt(false)
|
||||
return true
|
||||
}
|
||||
// match: (NeqPtr (Addr {a} _) (Addr {b} _))
|
||||
// result: (ConstBool [a != b])
|
||||
// match: (NeqPtr (Addr {x} _) (Addr {y} _))
|
||||
// result: (ConstBool [x != y])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1.Aux)
|
||||
y := auxToSym(v_1.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a != b)
|
||||
v.AuxInt = boolToAuxInt(x != y)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (NeqPtr (Addr {a} _) (OffPtr [o] (Addr {b} _)))
|
||||
// result: (ConstBool [a != b || o != 0])
|
||||
// match: (NeqPtr (Addr {x} _) (OffPtr [o] (Addr {y} _)))
|
||||
// result: (ConstBool [x != y || o != 0])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -15744,15 +15744,15 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a != b || o != 0)
|
||||
v.AuxInt = boolToAuxInt(x != y || o != 0)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (NeqPtr (OffPtr [o1] (Addr {a} _)) (OffPtr [o2] (Addr {b} _)))
|
||||
// result: (ConstBool [a != b || o1 != o2])
|
||||
// match: (NeqPtr (OffPtr [o1] (Addr {x} _)) (OffPtr [o2] (Addr {y} _)))
|
||||
// result: (ConstBool [x != y || o1 != o2])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpOffPtr {
|
||||
@ -15763,7 +15763,7 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
if v_0_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0_0.Aux)
|
||||
x := auxToSym(v_0_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -15772,39 +15772,39 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a != b || o1 != o2)
|
||||
v.AuxInt = boolToAuxInt(x != y || o1 != o2)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (NeqPtr (LocalAddr {a} _ _) (LocalAddr {b} _ _))
|
||||
// result: (ConstBool [a != b])
|
||||
// match: (NeqPtr (LocalAddr {x} _ _) (LocalAddr {y} _ _))
|
||||
// result: (ConstBool [x != y])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1.Aux)
|
||||
y := auxToSym(v_1.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a != b)
|
||||
v.AuxInt = boolToAuxInt(x != y)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (NeqPtr (LocalAddr {a} _ _) (OffPtr [o] (LocalAddr {b} _ _)))
|
||||
// result: (ConstBool [a != b || o != 0])
|
||||
// match: (NeqPtr (LocalAddr {x} _ _) (OffPtr [o] (LocalAddr {y} _ _)))
|
||||
// result: (ConstBool [x != y || o != 0])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0.Aux)
|
||||
x := auxToSym(v_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -15813,15 +15813,15 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a != b || o != 0)
|
||||
v.AuxInt = boolToAuxInt(x != y || o != 0)
|
||||
return true
|
||||
}
|
||||
break
|
||||
}
|
||||
// match: (NeqPtr (OffPtr [o1] (LocalAddr {a} _ _)) (OffPtr [o2] (LocalAddr {b} _ _)))
|
||||
// result: (ConstBool [a != b || o1 != o2])
|
||||
// match: (NeqPtr (OffPtr [o1] (LocalAddr {x} _ _)) (OffPtr [o2] (LocalAddr {y} _ _)))
|
||||
// result: (ConstBool [x != y || o1 != o2])
|
||||
for {
|
||||
for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
|
||||
if v_0.Op != OpOffPtr {
|
||||
@ -15832,7 +15832,7 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
if v_0_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
a := auxToSym(v_0_0.Aux)
|
||||
x := auxToSym(v_0_0.Aux)
|
||||
if v_1.Op != OpOffPtr {
|
||||
continue
|
||||
}
|
||||
@ -15841,9 +15841,9 @@ func rewriteValuegeneric_OpNeqPtr(v *Value) bool {
|
||||
if v_1_0.Op != OpLocalAddr {
|
||||
continue
|
||||
}
|
||||
b := auxToSym(v_1_0.Aux)
|
||||
y := auxToSym(v_1_0.Aux)
|
||||
v.reset(OpConstBool)
|
||||
v.AuxInt = boolToAuxInt(a != b || o1 != o2)
|
||||
v.AuxInt = boolToAuxInt(x != y || o1 != o2)
|
||||
return true
|
||||
}
|
||||
break
|
||||
@ -16532,17 +16532,17 @@ func rewriteValuegeneric_OpNot(v *Value) bool {
|
||||
}
|
||||
func rewriteValuegeneric_OpOffPtr(v *Value) bool {
|
||||
v_0 := v.Args[0]
|
||||
// match: (OffPtr (OffPtr p [b]) [a])
|
||||
// result: (OffPtr p [a+b])
|
||||
// match: (OffPtr (OffPtr p [y]) [x])
|
||||
// result: (OffPtr p [x+y])
|
||||
for {
|
||||
a := auxIntToInt64(v.AuxInt)
|
||||
x := auxIntToInt64(v.AuxInt)
|
||||
if v_0.Op != OpOffPtr {
|
||||
break
|
||||
}
|
||||
b := auxIntToInt64(v_0.AuxInt)
|
||||
y := auxIntToInt64(v_0.AuxInt)
|
||||
p := v_0.Args[0]
|
||||
v.reset(OpOffPtr)
|
||||
v.AuxInt = int64ToAuxInt(a + b)
|
||||
v.AuxInt = int64ToAuxInt(x + y)
|
||||
v.AddArg(p)
|
||||
return true
|
||||
}
|
||||
@ -20678,34 +20678,34 @@ func rewriteValuegeneric_OpSelectN(v *Value) bool {
|
||||
v_0 := v.Args[0]
|
||||
b := v.Block
|
||||
config := b.Func.Config
|
||||
// match: (SelectN [0] (MakeResult a ___))
|
||||
// result: a
|
||||
// match: (SelectN [0] (MakeResult x ___))
|
||||
// result: x
|
||||
for {
|
||||
if auxIntToInt64(v.AuxInt) != 0 || v_0.Op != OpMakeResult || len(v_0.Args) < 1 {
|
||||
break
|
||||
}
|
||||
a := v_0.Args[0]
|
||||
v.copyOf(a)
|
||||
x := v_0.Args[0]
|
||||
v.copyOf(x)
|
||||
return true
|
||||
}
|
||||
// match: (SelectN [1] (MakeResult a b ___))
|
||||
// result: b
|
||||
// match: (SelectN [1] (MakeResult x y ___))
|
||||
// result: y
|
||||
for {
|
||||
if auxIntToInt64(v.AuxInt) != 1 || v_0.Op != OpMakeResult || len(v_0.Args) < 2 {
|
||||
break
|
||||
}
|
||||
b := v_0.Args[1]
|
||||
v.copyOf(b)
|
||||
y := v_0.Args[1]
|
||||
v.copyOf(y)
|
||||
return true
|
||||
}
|
||||
// match: (SelectN [2] (MakeResult a b c ___))
|
||||
// result: c
|
||||
// match: (SelectN [2] (MakeResult x y z ___))
|
||||
// result: z
|
||||
for {
|
||||
if auxIntToInt64(v.AuxInt) != 2 || v_0.Op != OpMakeResult || len(v_0.Args) < 3 {
|
||||
break
|
||||
}
|
||||
c := v_0.Args[2]
|
||||
v.copyOf(c)
|
||||
z := v_0.Args[2]
|
||||
v.copyOf(z)
|
||||
return true
|
||||
}
|
||||
// match: (SelectN [0] call:(StaticCall {sym} s1:(Store _ (Const64 [sz]) s2:(Store _ src s3:(Store {t} _ dst mem)))))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user