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| author | Junyang Shao <shaojunyang@google.com> | 2025-07-07 03:08:01 +0000 |
|---|---|---|
| committer | Junyang Shao <shaojunyang@google.com> | 2025-07-07 09:58:31 -0700 |
| commit | d8fa853b37e364bb6a2356deda9073b1a1bc761d (patch) | |
| tree | bcac5c34a9e6bb918a450165d6b568022e8ee45d /src/cmd/compile | |
| parent | dfd75f82d4aa21c4fc841f85c175934915590b5e (diff) | |
| download | go-d8fa853b37e364bb6a2356deda9073b1a1bc761d.tar.xz | |
[dev.simd] cmd/compile: make regalloc simd aware on copy
When making a temporary copy, regalloc should be aware of the SIMD-ness
of the type; otherwise it might generate invalid moves.
Change-Id: I722c3a0111d0990af32d84c6aaa151f1ac8c1f00
Reviewed-on: https://go-review.googlesource.com/c/go/+/685895
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/cmd/compile')
| -rw-r--r-- | src/cmd/compile/internal/ssa/regalloc.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/regalloc.go b/src/cmd/compile/internal/ssa/regalloc.go index f1e210fe9b..d4ce7a815b 100644 --- a/src/cmd/compile/internal/ssa/regalloc.go +++ b/src/cmd/compile/internal/ssa/regalloc.go @@ -898,6 +898,14 @@ func (s *regAllocState) compatRegs(t *types.Type) regMask { if t.IsTuple() || t.IsFlags() { return 0 } + if t.IsSIMD() { + if t.Size() > 8 { + return s.f.Config.fpRegMask & s.allocatable + } else { + // K mask + return s.f.Config.gpRegMask & s.allocatable + } + } if t.IsFloat() || t == types.TypeInt128 { if t.Kind() == types.TFLOAT32 && s.f.Config.fp32RegMask != 0 { m = s.f.Config.fp32RegMask |