diff options
| author | Keith Randall <khr@golang.org> | 2025-11-17 12:47:04 -0800 |
|---|---|---|
| committer | Keith Randall <khr@google.com> | 2025-11-17 13:45:54 -0800 |
| commit | e1a12c781f55da85a30fd63471f8adcba908acd2 (patch) | |
| tree | 6056b5eaf267ce0432b16e0234811ce40a38bf61 /test/codegen/arithmetic.go | |
| parent | 6caab99026a496107e903469d8c906be66a71896 (diff) | |
| download | go-e1a12c781f55da85a30fd63471f8adcba908acd2.tar.xz | |
cmd/compile: use 32x32->64 multiplies on arm64
Gets rid of some sign extensions.
Change-Id: Ie67ef36b4ca1cd1a2cd9fa5d84578db553578a22
Reviewed-on: https://go-review.googlesource.com/c/go/+/721241
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Diffstat (limited to 'test/codegen/arithmetic.go')
| -rw-r--r-- | test/codegen/arithmetic.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go index 6b2c5529e1..9443d812dc 100644 --- a/test/codegen/arithmetic.go +++ b/test/codegen/arithmetic.go @@ -333,6 +333,15 @@ func Fold2NegMul(a, b int) int { return -a * -b } +func Mul32(a, b int32) int64 { + // arm64:"SMULL" -"MOVW" + return int64(a) * int64(b) +} +func Mul32U(a, b uint32) uint64 { + // arm64:"UMULL" -"MOVWU" + return uint64(a) * uint64(b) +} + // -------------- // // Division // // -------------- // |