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| author | Xiaolin Zhao <zhaoxiaolin@loongson.cn> | 2025-06-17 20:47:10 +0800 |
|---|---|---|
| committer | abner chenc <chenguoqi@loongson.cn> | 2025-08-05 18:02:06 -0700 |
| commit | a5527374181c936938676608d469baa41e9abe8b (patch) | |
| tree | 525639db374e5f2fabaf50452b69c9a2788f606f /src/database/sql/sql.go | |
| parent | e1fd4faf914b914856dfb0be1ad26cd4cef4a9ae (diff) | |
| download | go-a5527374181c936938676608d469baa41e9abe8b.tar.xz | |
cmd/compile: fold negation into multiplication on loong64
This change also add corresponding benchmark tests and codegen tests.
The performance improvement on CPU Loongson-3A6000-HV is as follows:
goos: linux
goarch: loong64
pkg: cmd/compile/internal/test
cpu: Loongson-3A6000-HV @ 2500.00MHz
| bench.old | bench.new |
| sec/op | sec/op vs base |
MulNeg 828.4n ± 0% 655.9n ± 0% -20.82% (p=0.000 n=10)
Mul2Neg 1062.0n ± 0% 826.8n ± 0% -22.15% (p=0.000 n=10)
geomean 938.0n 736.4n -21.49%
Change-Id: Ia999732880ec65be0c66cddc757a4868847e5b15
Reviewed-on: https://go-review.googlesource.com/c/go/+/682535
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Mark Freeman <markfreeman@google.com>
Diffstat (limited to 'src/database/sql/sql.go')
0 files changed, 0 insertions, 0 deletions