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| author | limeidan <limeidan@loongson.cn> | 2026-02-10 19:31:23 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2026-02-12 10:17:33 -0800 |
| commit | 287451f09ccd6e744473c35d2b7fe41985b7f789 (patch) | |
| tree | 382c74566e5ff9b0a348b923f64ff97d72b38655 /src/math | |
| parent | 71232268768eab3002d2ae473b49f74b74e89cdf (diff) | |
| download | go-287451f09ccd6e744473c35d2b7fe41985b7f789.tar.xz | |
math/big: optimize the implementation of lshVU on loong64
Change-Id: I1aac166aea4f907a7fb93028a39ef9d1e3888c9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/743800
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Junyang Shao <shaojunyang@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 'src/math')
| -rw-r--r-- | src/math/big/arith_loong64.s | 6 | ||||
| -rw-r--r-- | src/math/big/internal/asmgen/loong64.go | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/src/math/big/arith_loong64.s b/src/math/big/arith_loong64.s index b2af925124..ad92f07690 100644 --- a/src/math/big/arith_loong64.s +++ b/src/math/big/arith_loong64.s @@ -162,10 +162,8 @@ TEXT ·lshVU(SB), NOSPLIT, $0 MOVV x_base+24(FP), R6 MOVV z_base+0(FP), R7 // run loop backward - SLLV $3, R4, R8 - ADDVU R8, R6 - SLLV $3, R4, R8 - ADDVU R8, R7 + ALSLV $3, R4, R6, R6 + ALSLV $3, R4, R7, R7 // shift first word into carry MOVV -8(R6), R8 MOVV $64, R9 diff --git a/src/math/big/internal/asmgen/loong64.go b/src/math/big/internal/asmgen/loong64.go index e2d05690ab..104439dacd 100644 --- a/src/math/big/internal/asmgen/loong64.go +++ b/src/math/big/internal/asmgen/loong64.go @@ -40,6 +40,8 @@ var ArchLoong64 = &Arch{ or: "OR", xor: "XOR", + addWords: "ALSLV $3, %[1]s, %[2]s, %[3]s", + jmpZero: "BEQ %s, %s", jmpNonZero: "BNE %s, %s", } |