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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/abi/abiutils.go
View file

@ -5,6 +5,7 @@
package abi
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/src"
"fmt"
@ -337,6 +338,9 @@ func (config *ABIConfig) updateOffset(result *ABIParamResultInfo, f *types.Field
if fOffset == types.BOGUS_FUNARG_OFFSET {
// Set the Offset the first time. After that, we may recompute it, but it should never change.
f.Offset = off
if f.Nname != nil {
f.Nname.(*ir.Name).SetFrameOffset(off)
}
} else if fOffset != off {
panic(fmt.Errorf("Offset changed from %d to %d", fOffset, off))
}