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cmd/compile: register abi, morestack work and mole whacking

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Morestack works for non-pointer register parameters

Within a function body, pointer-typed parameters are correctly
tracked.

Results still not hooked up.

For #40724.

Change-Id: Icaee0b51d0da54af983662d945d939b756088746
Reviewed-on: https://go-review.googlesource.com/c/go/+/294410
Trust: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
David Chase 2021-02-19 17:11:40 -05:00
parent 868a110c56
commit a2d92b5143
11 changed files with 175 additions and 57 deletions
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4
src/cmd/compile/internal/ssa/debug.go
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@ -901,10 +901,10 @@ func (state *debugState) buildLocationLists(blockLocs []*BlockDebug) {
if opcodeTable[v.Op].zeroWidth {
if changed {
if v.Op == OpArg || v.Op == OpPhi || v.Op.isLoweredGetClosurePtr() {
if hasAnyArgOp(v) || v.Op == OpPhi || v.Op.isLoweredGetClosurePtr() {
// These ranges begin at true beginning of block, not after first instruction
if zeroWidthPending {
b.Func.Fatalf("Unexpected op mixed with OpArg/OpPhi/OpLoweredGetClosurePtr at beginning of block %s in %s\n%s", b, b.Func.Name, b.Func)
panic(fmt.Errorf("Unexpected op '%s' mixed with OpArg/OpPhi/OpLoweredGetClosurePtr at beginning of block %s in %s\n%s", v.LongString(), b, b.Func.Name, b.Func))
}
apcChangedSize = len(state.changedVars.contents())
continue