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| author | Cherry Zhang <cherryyz@google.com> | 2017-10-09 15:33:29 -0400 |
|---|---|---|
| committer | Cherry Zhang <cherryyz@google.com> | 2017-10-10 15:15:21 +0000 |
| commit | 6f3e5e637c6c26d1d24e20e96b86ecd27a7ecabc (patch) | |
| tree | de80139c252a6e8a67696c74f87d38352eda6056 /src/cmd/compile/internal/arm | |
| parent | ae175f74cb4beb4a6695e185c77c7ed52ee2d1d7 (diff) | |
| download | go-6f3e5e637c6c26d1d24e20e96b86ecd27a7ecabc.tar.gz go-6f3e5e637c6c26d1d24e20e96b86ecd27a7ecabc.zip | |
cmd/compile: intrinsify runtime.getcallersp
Add a compiler intrinsic for getcallersp. So we are able to get
rid of the argument (not done in this CL).
Change-Id: Ic38fda1c694f918328659ab44654198fb116668d
Reviewed-on: https://go-review.googlesource.com/69350
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src/cmd/compile/internal/arm')
| -rw-r--r-- | src/cmd/compile/internal/arm/ssa.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/arm/ssa.go b/src/cmd/compile/internal/arm/ssa.go index 140b9d10ac..4188775329 100644 --- a/src/cmd/compile/internal/arm/ssa.go +++ b/src/cmd/compile/internal/arm/ssa.go @@ -778,6 +778,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) { case ssa.OpARMLoweredGetClosurePtr: // Closure pointer is R7 (arm.REGCTXT). gc.CheckLoweredGetClosurePtr(v) + case ssa.OpARMLoweredGetCallerSP: + // caller's SP is FixedFrameSize below the address of the first arg + p := s.Prog(arm.AMOVW) + p.From.Type = obj.TYPE_ADDR + p.From.Offset = -gc.Ctxt.FixedFrameSize() + p.From.Name = obj.NAME_PARAM + p.To.Type = obj.TYPE_REG + p.To.Reg = v.Reg() case ssa.OpARMFlagEQ, ssa.OpARMFlagLT_ULT, ssa.OpARMFlagLT_UGT, |