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[dev.regabi] cmd/compile: fixes for big rewrite

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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>
This commit is contained in:
Russ Cox 2020-12-22 17:22:28 -05:00
parent ec741b0447
commit d1d1099c91
2 changed files with 12 additions and 9 deletions
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11
src/cmd/compile/internal/gc/gsubr.go
View File

@ -265,20 +265,21 @@ func makeABIWrapper(f *ir.Func, wrapperABI obj.ABI) {
// to allocate any stack space). Doing this will require some // to allocate any stack space). Doing this will require some
// extra work in typecheck/walk/ssa, might want to add a new node // extra work in typecheck/walk/ssa, might want to add a new node
// OTAILCALL or something to this effect. // OTAILCALL or something to this effect.
var call ir.Node var tail ir.Node
if tfn.Type().NumResults() == 0 && tfn.Type().NumParams() == 0 && tfn.Type().NumRecvs() == 0 { if tfn.Type().NumResults() == 0 && tfn.Type().NumParams() == 0 && tfn.Type().NumRecvs() == 0 {
call = nodSym(ir.ORETJMP, nil, f.Nname.Sym()) tail = nodSym(ir.ORETJMP, nil, f.Nname.Sym())
} else { } else {
call = ir.Nod(ir.OCALL, f.Nname, nil) call := ir.Nod(ir.OCALL, f.Nname, nil)
call.PtrList().Set(paramNnames(tfn.Type())) call.PtrList().Set(paramNnames(tfn.Type()))
call.SetIsDDD(tfn.Type().IsVariadic()) call.SetIsDDD(tfn.Type().IsVariadic())
tail = call
if tfn.Type().NumResults() > 0 { if tfn.Type().NumResults() > 0 {
n := ir.Nod(ir.ORETURN, nil, nil) n := ir.Nod(ir.ORETURN, nil, nil)
n.PtrList().Set1(call) n.PtrList().Set1(call)
call = n tail = n
} }
} }
fn.PtrBody().Append(call) fn.PtrBody().Append(tail)
funcbody() funcbody()
if base.Debug.DclStack != 0 { if base.Debug.DclStack != 0 {

10
src/cmd/compile/internal/gc/ssa.go
View File

@ -7332,18 +7332,20 @@ func callTargetLSym(callee *types.Sym, callerLSym *obj.LSym) *obj.LSym {
if ir.AsNode(callee.Def) == nil { if ir.AsNode(callee.Def) == nil {
return lsym return lsym
} }
ndclfunc := ir.AsNode(callee.Def).Name().Defn defn := ir.AsNode(callee.Def).Name().Defn
if ndclfunc == nil { if defn == nil {
return lsym return lsym
} }
ndclfunc := defn.(*ir.Func)
// check for case 1 above // check for case 1 above
if callerLSym.ABIWrapper() { if callerLSym.ABIWrapper() {
if nlsym := ndclfunc.Func().LSym; nlsym != nil { if nlsym := ndclfunc.LSym; nlsym != nil {
lsym = nlsym lsym = nlsym
} }
} else { } else {
// check for case 2 above // check for case 2 above
nam := ndclfunc.Func().Nname nam := ndclfunc.Nname
defABI, hasDefABI := symabiDefs[nam.Sym().LinksymName()] defABI, hasDefABI := symabiDefs[nam.Sym().LinksymName()]
if hasDefABI && defABI == obj.ABI0 { if hasDefABI && defABI == obj.ABI0 {
lsym = nam.Sym().LinksymABI0() lsym = nam.Sym().LinksymABI0()