From 2c5b707b3b30ea194877600151a7c299671cab3a Mon Sep 17 00:00:00 2001 From: Xiaolin Zhao Date: Mon, 12 Aug 2024 17:20:44 +0800 Subject: cmd/compile: optimize RotateLeft8/16 on loong64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit goos: linux goarch: loong64 pkg: math/bits cpu: Loongson-3A6000 @ 2500.00MHz │ bench.old │ bench.new │ │ sec/op │ sec/op vs base │ RotateLeft8 1.401n ± 0% 1.201n ± 0% -14.28% (p=0.000 n=20) RotateLeft16 1.4010n ± 0% 0.8032n ± 0% -42.67% (p=0.000 n=20) geomean 1.401n 0.9822n -29.90% goos: linux goarch: loong64 pkg: math/bits cpu: Loongson-3A5000 @ 2500.00MHz │ bench.old │ bench.new │ │ sec/op │ sec/op vs base │ RotateLeft8 1.576n ± 0% 1.310n ± 0% -16.88% (p=0.000 n=20) RotateLeft16 1.576n ± 0% 1.166n ± 0% -26.02% (p=0.000 n=20) geomean 1.576n 1.236n -21.58% Change-Id: I39c18306be0b8fd31b57bd0911714abd1783b50e Reviewed-on: https://go-review.googlesource.com/c/go/+/604738 Auto-Submit: abner chenc Reviewed-by: Dmitri Shuralyov Reviewed-by: abner chenc LUCI-TryBot-Result: Go LUCI Reviewed-by: Tim King --- test/codegen/mathbits.go | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'test/codegen/mathbits.go') diff --git a/test/codegen/mathbits.go b/test/codegen/mathbits.go index af2c9e790c..4754f29525 100644 --- a/test/codegen/mathbits.go +++ b/test/codegen/mathbits.go @@ -230,6 +230,7 @@ func ReverseBytes16(n uint16) uint16 { func RotateLeft64(n uint64) uint64 { // amd64:"ROLQ" // arm64:"ROR" + // loong64:"ROTRV" // ppc64x:"ROTL" // riscv64:"RORI" // s390x:"RISBGZ\t[$]0, [$]63, [$]37, " @@ -241,6 +242,7 @@ func RotateLeft32(n uint32) uint32 { // amd64:"ROLL" 386:"ROLL" // arm:`MOVW\tR[0-9]+@>23` // arm64:"RORW" + // loong64:"ROTR\t" // ppc64x:"ROTLW" // riscv64:"RORIW" // s390x:"RLL" @@ -251,18 +253,21 @@ func RotateLeft32(n uint32) uint32 { func RotateLeft16(n uint16, s int) uint16 { // amd64:"ROLW" 386:"ROLW" // arm64:"RORW",-"CSEL" + // loong64:"ROTR\t","SLLV" return bits.RotateLeft16(n, s) } func RotateLeft8(n uint8, s int) uint8 { // amd64:"ROLB" 386:"ROLB" // arm64:"LSL","LSR",-"CSEL" + // loong64:"OR","SLLV","SRLV" return bits.RotateLeft8(n, s) } func RotateLeftVariable(n uint, m int) uint { // amd64:"ROLQ" // arm64:"ROR" + // loong64:"ROTRV" // ppc64x:"ROTL" // riscv64:"ROL" // s390x:"RLLG" @@ -273,6 +278,7 @@ func RotateLeftVariable(n uint, m int) uint { func RotateLeftVariable64(n uint64, m int) uint64 { // amd64:"ROLQ" // arm64:"ROR" + // loong64:"ROTRV" // ppc64x:"ROTL" // riscv64:"ROL" // s390x:"RLLG" @@ -284,6 +290,7 @@ func RotateLeftVariable32(n uint32, m int) uint32 { // arm:`MOVW\tR[0-9]+@>R[0-9]+` // amd64:"ROLL" // arm64:"RORW" + // loong64:"ROTR\t" // ppc64x:"ROTLW" // riscv64:"ROLW" // s390x:"RLL" -- cgit v1.3