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| author | limeidan <limeidan@loongson.cn> | 2025-07-18 10:36:06 +0800 |
|---|---|---|
| committer | Keith Randall <khr@google.com> | 2025-08-25 12:30:16 -0700 |
| commit | bd71b9465948ec523c26dd2d9fea888bd83a2e6c (patch) | |
| tree | 59eae1fbf88cb5395818715d9313318fbd1e3283 /test/codegen/arithmetic.go | |
| parent | ea55ca360005c607fa54304d95c6821a6ce20e7c (diff) | |
| download | go-bd71b9465948ec523c26dd2d9fea888bd83a2e6c.tar.xz | |
cmd/compile/internal: optimizing add+sll rule using ALSLV instruction on loong64
Reduce the number of go toolchain instructions on loong64 as follows:
file before after Δ %
go 1573148 1571708 -1,440 -0.0915%
gofmt 320578 320090 -488 -0.1522%
asm 555066 554406 -660 -0.1189%
cgo 481566 480926 -640 -0.1329%
compile 2475962 2473880 -2,082 -0.0841%
cover 516536 515920 -616 -0.1193%
link 702172 701404 -768 -0.1094%
preprofile 238626 238274 -352 -0.1475%
vet 792928 792100 -828 -0.1044%
Change-Id: I61e462726835959c60e1b4e5256d4020202418ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/693877
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Diffstat (limited to 'test/codegen/arithmetic.go')
| -rw-r--r-- | test/codegen/arithmetic.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go index 67adb50fa5..beabfe24eb 100644 --- a/test/codegen/arithmetic.go +++ b/test/codegen/arithmetic.go @@ -624,6 +624,11 @@ func AddMul(x int) int { return 2*x + 1 } +func AddShift(a, b int) int { + // loong64: "ALSLV" + return a + (b << 4) +} + func MULA(a, b, c uint32) (uint32, uint32, uint32) { // arm:`MULA`,-`MUL\s` // arm64:`MADDW`,-`MULW` |