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| author | Joel Sing <joel@sing.id.au> | 2020-03-16 02:38:43 +1100 |
|---|---|---|
| committer | Joel Sing <joel@sing.id.au> | 2020-03-17 06:38:32 +0000 |
| commit | 2e918c3aab6cc944380da672b93fb92c67b35de1 (patch) | |
| tree | bea814950f2ca0e3417e104e8920d3553bc9a9b7 /src/cmd/compile/internal/riscv64 | |
| parent | 7ec4adbc919df7dbd549ccc71a2e17d8a0bafe4d (diff) | |
| download | go-2e918c3aab6cc944380da672b93fb92c67b35de1.tar.gz go-2e918c3aab6cc944380da672b93fb92c67b35de1.zip | |
cmd/compile: provide Load8/Store8 atomic intrinsics on riscv64
Updates #36765
Change-Id: Ieeb6bbc54e4841a1348ad50e80342ec4bc675e07
Reviewed-on: https://go-review.googlesource.com/c/go/+/223557
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'src/cmd/compile/internal/riscv64')
| -rw-r--r-- | src/cmd/compile/internal/riscv64/ssa.go | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/riscv64/ssa.go b/src/cmd/compile/internal/riscv64/ssa.go index 631e069a4e..13015a5f3d 100644 --- a/src/cmd/compile/internal/riscv64/ssa.go +++ b/src/cmd/compile/internal/riscv64/ssa.go @@ -341,6 +341,25 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) { p.To.Name = obj.NAME_EXTERN p.To.Sym = gc.BoundsCheckFunc[v.AuxInt] s.UseArgs(16) // space used in callee args area by assembly stubs + + case ssa.OpRISCV64LoweredAtomicLoad8: + s.Prog(riscv.AFENCE) + p := s.Prog(riscv.AMOVBU) + p.From.Type = obj.TYPE_MEM + p.From.Reg = v.Args[0].Reg() + p.To.Type = obj.TYPE_REG + p.To.Reg = v.Reg0() + s.Prog(riscv.AFENCE) + + case ssa.OpRISCV64LoweredAtomicStore8: + s.Prog(riscv.AFENCE) + p := s.Prog(riscv.AMOVB) + p.From.Type = obj.TYPE_REG + p.From.Reg = v.Args[1].Reg() + p.To.Type = obj.TYPE_MEM + p.To.Reg = v.Args[0].Reg() + s.Prog(riscv.AFENCE) + case ssa.OpRISCV64LoweredZero: mov, sz := largestMove(v.AuxInt) |