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| author | Austin Clements <austin@google.com> | 2017-11-15 14:54:24 -0800 |
|---|---|---|
| committer | Austin Clements <austin@google.com> | 2018-02-13 16:34:19 +0000 |
| commit | 79594ee95a4b91c894f00e2562ba12e7f803191b (patch) | |
| tree | 7ce1f344287b43ce76ecfd09396d45c8e0203459 /src/cmd/compile/internal/ssa/gen/ARM64Ops.go | |
| parent | 1de1f316df84569c449d6d709b0d711921ea6116 (diff) | |
| download | go-79594ee95a4b91c894f00e2562ba12e7f803191b.tar.gz go-79594ee95a4b91c894f00e2562ba12e7f803191b.zip | |
runtime: buffered write barrier for arm64
Updates #22460.
Change-Id: I5f8fbece9545840f5fc4c9834e2050b0920776f0
Reviewed-on: https://go-review.googlesource.com/92699
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/cmd/compile/internal/ssa/gen/ARM64Ops.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/gen/ARM64Ops.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/gen/ARM64Ops.go b/src/cmd/compile/internal/ssa/gen/ARM64Ops.go index 10a19cbd41..5764d6bb37 100644 --- a/src/cmd/compile/internal/ssa/gen/ARM64Ops.go +++ b/src/cmd/compile/internal/ssa/gen/ARM64Ops.go @@ -505,6 +505,11 @@ func init() { // CBNZ Rtmp, -3(PC) {name: "LoweredAtomicAnd8", argLength: 3, reg: gpstore, asm: "AND", faultOnNilArg0: true, hasSideEffects: true}, {name: "LoweredAtomicOr8", argLength: 3, reg: gpstore, asm: "ORR", faultOnNilArg0: true, hasSideEffects: true}, + + // LoweredWB invokes runtime.gcWriteBarrier. arg0=destptr, arg1=srcptr, arg2=mem, aux=runtime.gcWriteBarrier + // It saves all GP registers if necessary, + // but clobbers R30 (LR) because it's a call. + {name: "LoweredWB", argLength: 3, reg: regInfo{inputs: []regMask{buildReg("R2"), buildReg("R3")}, clobbers: (callerSave &^ gpg) | buildReg("R30")}, clobberFlags: true, aux: "Sym", symEffect: "None"}, } blocks := []blockData{ |