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cmd/compile: spill output parameters passed in registers as autos

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ALSO:
found evidence that stack maps for bodyless methods are wrong.
gofmt in test/abi
removed never-executed code in types/size.go

Updates #44816.

Change-Id: I658c33f049337fb6f1e625f0c55430d25bfa877e
Reviewed-on: https://go-review.googlesource.com/c/go/+/300749
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
David Chase 2021-03-10 20:54:11 -05:00
parent 96aecdcb36
commit 8ed438c077
17 changed files with 308 additions and 89 deletions
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10
src/cmd/compile/internal/dwarfgen/dwarf.go
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@ -265,6 +265,13 @@ func createSimpleVar(fnsym *obj.LSym, n *ir.Name) *dwarf.Var {
var offs int64
switch n.Class {
case ir.PPARAM, ir.PPARAMOUT:
if !n.IsOutputParamInRegisters() {
abbrev = dwarf.DW_ABRV_PARAM
offs = n.FrameOffset() + base.Ctxt.FixedFrameSize()
break
}
fallthrough
case ir.PAUTO:
offs = n.FrameOffset()
abbrev = dwarf.DW_ABRV_AUTO
@ -275,9 +282,6 @@ func createSimpleVar(fnsym *obj.LSym, n *ir.Name) *dwarf.Var {
offs -= int64(types.PtrSize)
}
case ir.PPARAM, ir.PPARAMOUT:
abbrev = dwarf.DW_ABRV_PARAM
offs = n.FrameOffset() + base.Ctxt.FixedFrameSize()
default:
base.Fatalf("createSimpleVar unexpected class %v for node %v", n.Class, n)
}