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| author | Filippo Valsorda <filippo@golang.org> | 2021-08-09 12:37:04 -0400 |
|---|---|---|
| committer | Filippo Valsorda <filippo@golang.org> | 2021-08-09 12:37:04 -0400 |
| commit | dd96ded6c86b8a38f49fa087b758455243a0f08c (patch) | |
| tree | f1a70c0194af60202025ad135d1ee903e20896c3 /src/cmd/compile/internal/ssa/gen/ARM64Ops.go | |
| parent | ddf078e08dc61f38e26f9969dd2a2151a8c73904 (diff) | |
| parent | acbe242f8a2cae8ef4749806291a37d23089b572 (diff) | |
| download | go-dev.boringcrypto.go1.15.tar.gz go-dev.boringcrypto.go1.15.zip | |
[dev.boringcrypto.go1.15] all: merge go1.15.15 into dev.boringcrypto.go1.15dev.boringcrypto.go1.15
Change-Id: I3b20c90322a0c0deec68a161b8fcbab9188fb6b2
Diffstat (limited to 'src/cmd/compile/internal/ssa/gen/ARM64Ops.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/gen/ARM64Ops.go | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/cmd/compile/internal/ssa/gen/ARM64Ops.go b/src/cmd/compile/internal/ssa/gen/ARM64Ops.go index b402e35ea6..2208d26df9 100644 --- a/src/cmd/compile/internal/ssa/gen/ARM64Ops.go +++ b/src/cmd/compile/internal/ssa/gen/ARM64Ops.go @@ -498,13 +498,14 @@ func init() { // auxint = offset into duffzero code to start executing // returns mem // R20 changed as side effect + // R16 and R17 may be clobbered by linker trampoline. { name: "DUFFZERO", aux: "Int64", argLength: 2, reg: regInfo{ inputs: []regMask{buildReg("R20")}, - clobbers: buildReg("R20 R30"), + clobbers: buildReg("R16 R17 R20 R30"), }, faultOnNilArg0: true, }, @@ -537,13 +538,14 @@ func init() { // auxint = offset into duffcopy code to start executing // returns mem // R20, R21 changed as side effect + // R16 and R17 may be clobbered by linker trampoline. { name: "DUFFCOPY", aux: "Int64", argLength: 3, reg: regInfo{ inputs: []regMask{buildReg("R21"), buildReg("R20")}, - clobbers: buildReg("R20 R21 R26 R30"), + clobbers: buildReg("R16 R17 R20 R21 R26 R30"), }, faultOnNilArg0: true, faultOnNilArg1: true, @@ -664,7 +666,8 @@ func init() { // 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"}, + // R16 and R17 may be clobbered by linker trampoline. + {name: "LoweredWB", argLength: 3, reg: regInfo{inputs: []regMask{buildReg("R2"), buildReg("R3")}, clobbers: (callerSave &^ gpg) | buildReg("R16 R17 R30")}, clobberFlags: true, aux: "Sym", symEffect: "None"}, // There are three of these functions so that they can have three different register inputs. // When we check 0 <= c <= cap (A), then 0 <= b <= c (B), then 0 <= a <= b (C), we want the |