diff options
| author | khr@golang.org <khr@golang.org> | 2025-02-23 10:34:00 -0800 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2025-02-25 10:19:25 -0800 |
| commit | cc16fb52e6f1eafaee468f8563525ec391e016f5 (patch) | |
| tree | f4f8fc21b0ce47660019362455c2eb5f81a4ea16 /src | |
| parent | 1e92ff11f5fa9d495c05414591516402a202539c (diff) | |
| download | go-cc16fb52e6f1eafaee468f8563525ec391e016f5.tar.xz | |
cmd/compile: ensure we don't reuse temporary register
Before this CL, we could use the same register for both a temporary
register and for moving a value in the output register out of the way.
Fixes #71857
Change-Id: Iefbfd9d4139136174570d8aadf8a0fb391791ea9
Reviewed-on: https://go-review.googlesource.com/c/go/+/651221
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/ssa/regalloc.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/regalloc.go b/src/cmd/compile/internal/ssa/regalloc.go index 1b7bcb2b1d..d794098b9d 100644 --- a/src/cmd/compile/internal/ssa/regalloc.go +++ b/src/cmd/compile/internal/ssa/regalloc.go @@ -1677,6 +1677,7 @@ func (s *regAllocState) regalloc(f *Func) { } tmpReg = s.allocReg(m, &tmpVal) s.nospill |= regMask(1) << tmpReg + s.tmpused |= regMask(1) << tmpReg } // Now that all args are in regs, we're ready to issue the value itself. |