diff options
| author | Julian Zhu <jz531210@gmail.com> | 2025-05-17 14:30:07 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2025-05-20 11:08:28 -0700 |
| commit | dfebef1c0459af0a34eceb4027c9fab5824f2eab (patch) | |
| tree | 9b8760c688670faf9c88cbe8fa7729c1ac938187 /test/codegen/arithmetic.go | |
| parent | be0cc937ec9c109da90ec4d7da5af89606f8c0cf (diff) | |
| download | go-dfebef1c0459af0a34eceb4027c9fab5824f2eab.tar.xz | |
cmd/compile: fold negation into addition/subtraction on arm64
Fold negation into addition/subtraction and avoid double negation.
platform: linux/arm64
file before after Δ %
addr2line 3628108 3628116 +8 +0.000%
asm 6208353 6207857 -496 -0.008%
buildid 3460682 3460418 -264 -0.008%
cgo 5572988 5572492 -496 -0.009%
compile 26042159 26041039 -1120 -0.004%
cover 6304328 6303472 -856 -0.014%
dist 4139330 4139098 -232 -0.006%
doc 9429305 9428065 -1240 -0.013%
fix 3997189 3996733 -456 -0.011%
link 8212128 8210280 -1848 -0.023%
nm 3620056 3619696 -360 -0.010%
objdump 5920289 5919233 -1056 -0.018%
pack 2892250 2891778 -472 -0.016%
pprof 17094569 17092745 -1824 -0.011%
test2json 3335825 3335529 -296 -0.009%
trace 15842080 15841456 -624 -0.004%
vet 9472194 9471106 -1088 -0.011%
go 19081541 19081509 -32 -0.000%
total 154253374 154240622 -12752 -0.008%
platform: darwin/arm64
file before after Δ %
compile 27152002 27135490 -16512 -0.061%
link 8372914 8356402 -16512 -0.197%
go 19154802 19154778 -24 -0.000%
total 157734180 157701132 -33048 -0.021%
Change-Id: I15a349bfbaf7333ec3e4a62ae4d06f3f371dfb1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/673715
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'test/codegen/arithmetic.go')
| -rw-r--r-- | test/codegen/arithmetic.go | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go index 6d8e62c721..bd5540ec4b 100644 --- a/test/codegen/arithmetic.go +++ b/test/codegen/arithmetic.go @@ -91,6 +91,7 @@ func SubFromConst(a int) int { } func SubFromConstNeg(a int) int { + // arm64: "ADD\t\\$40" // loong64: "ADDV[U]\t\\$40" // mips: "ADD[U]\t\\$40" // mips64: "ADDV[U]\t\\$40" @@ -101,6 +102,7 @@ func SubFromConstNeg(a int) int { } func SubSubFromConst(a int) int { + // arm64: "ADD\t\\$20" // loong64: "ADDV[U]\t\\$20" // mips: "ADD[U]\t\\$20" // mips64: "ADDV[U]\t\\$20" @@ -118,6 +120,7 @@ func AddSubFromConst(a int) int { } func NegSubFromConst(a int) int { + // arm64: "SUB\t\\$20" // loong64: "ADDV[U]\t\\$-20" // mips: "ADD[U]\t\\$-20" // mips64: "ADDV[U]\t\\$-20" @@ -128,6 +131,7 @@ func NegSubFromConst(a int) int { } func NegAddFromConstNeg(a int) int { + // arm64: "SUB\t\\$40","NEG" // loong64: "ADDV[U]\t\\$-40","SUBV" // mips: "ADD[U]\t\\$-40","SUB" // mips64: "ADDV[U]\t\\$-40","SUBV" @@ -139,6 +143,7 @@ func NegAddFromConstNeg(a int) int { func SubSubNegSimplify(a, b int) int { // amd64:"NEGQ" + // arm64:"NEG" // loong64:"SUBV" // mips:"SUB" // mips64:"SUBV" @@ -150,6 +155,7 @@ func SubSubNegSimplify(a, b int) int { func SubAddSimplify(a, b int) int { // amd64:-"SUBQ",-"ADDQ" + // arm64:-"SUB",-"ADD" // loong64:-"SUBV",-"ADDV" // mips:-"SUB",-"ADD" // mips64:-"SUBV",-"ADDV" @@ -161,6 +167,7 @@ func SubAddSimplify(a, b int) int { func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) { // amd64:-"ADDQ" + // arm64:-"ADD" // mips:"SUB",-"ADD" // mips64:"SUBV",-"ADDV" // loong64:"SUBV",-"ADDV" @@ -172,6 +179,7 @@ func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) { // amd64:-"ADDQ" r3 := (b + a) - (c + a) // amd64:-"SUBQ" + // arm64:-"SUB" // mips:"ADD",-"SUB" // mips64:"ADDV",-"SUBV" // loong64:"ADDV",-"SUBV" @@ -183,6 +191,7 @@ func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) { func SubAddNegSimplify(a, b int) int { // amd64:"NEGQ",-"ADDQ",-"SUBQ" + // arm64:"NEG",-"ADD",-"SUB" // loong64:"SUBV",-"ADDV" // mips:"SUB",-"ADD" // mips64:"SUBV",-"ADDV" @@ -194,6 +203,7 @@ func SubAddNegSimplify(a, b int) int { func AddAddSubSimplify(a, b, c int) int { // amd64:-"SUBQ" + // arm64:"ADD",-"SUB" // loong64:"ADDV",-"SUBV" // mips:"ADD",-"SUB" // mips64:"ADDV",-"SUBV" |