diff options
| author | Xiaolin Zhao <zhaoxiaolin@loongson.cn> | 2025-05-14 14:35:41 +0800 |
|---|---|---|
| committer | abner chenc <chenguoqi@loongson.cn> | 2025-05-14 17:46:58 -0700 |
| commit | c31a5c571f32f350a0a1b30f2b0e85576096e14c (patch) | |
| tree | 4c3111810c8907167ffbd38df7c24f9f2cf918d0 /test/codegen/arithmetic.go | |
| parent | de86d02c32f6690391ed79b99d0f763bb06606d5 (diff) | |
| download | go-c31a5c571f32f350a0a1b30f2b0e85576096e14c.tar.xz | |
cmd/compile: fold negation into addition/subtraction on loong64
This change also avoid double negation, and add loong64 codegen for arithmetic tests.
Reduce the number of go toolchain instructions on loong64 as follows.
file before after Δ %
addr2line 279972 279896 -76 -0.0271%
asm 556390 556310 -80 -0.0144%
buildid 272376 272300 -76 -0.0279%
cgo 481534 481550 +16 +0.0033%
compile 2457992 2457396 -596 -0.0242%
covdata 323488 323404 -84 -0.0260%
cover 518630 518490 -140 -0.0270%
dist 340894 340814 -80 -0.0235%
distpack 282568 282484 -84 -0.0297%
doc 790224 789984 -240 -0.0304%
fix 324408 324348 -60 -0.0185%
link 704910 704666 -244 -0.0346%
nm 277220 277144 -76 -0.0274%
objdump 508026 507878 -148 -0.0291%
pack 221810 221786 -24 -0.0108%
pprof 1470284 1469880 -404 -0.0275%
test2json 254896 254852 -44 -0.0173%
trace 1100390 1100074 -316 -0.0287%
vet 781398 781142 -256 -0.0328%
go 1529668 1529128 -540 -0.0353%
gofmt 318668 318568 -100 -0.0314%
total 13795746 13792094 -3652 -0.0265%
Change-Id: I88d1f12cfc4be0e92687c48e06a57213aa484aca
Reviewed-on: https://go-review.googlesource.com/c/go/+/672555
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'test/codegen/arithmetic.go')
| -rw-r--r-- | test/codegen/arithmetic.go | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go index 7bac85eb6c..d02154bd3c 100644 --- a/test/codegen/arithmetic.go +++ b/test/codegen/arithmetic.go @@ -91,6 +91,7 @@ func SubFromConst(a int) int { } func SubFromConstNeg(a int) int { + // loong64: "ADDV[U]\t\\$40" // ppc64x: `ADD\t[$]40,\sR[0-9]+,\sR` // riscv64: "ADDI\t\\$40",-"NEG" c := 40 - (-a) @@ -98,6 +99,7 @@ func SubFromConstNeg(a int) int { } func SubSubFromConst(a int) int { + // loong64: "ADDV[U]\t\\$20" // ppc64x: `ADD\t[$]20,\sR[0-9]+,\sR` // riscv64: "ADDI\t\\$20",-"NEG" c := 40 - (20 - a) @@ -112,6 +114,7 @@ func AddSubFromConst(a int) int { } func NegSubFromConst(a int) int { + // loong64: "ADDV[U]\t\\$-20" // ppc64x: `ADD\t[$]-20,\sR[0-9]+,\sR` // riscv64: "ADDI\t\\$-20" c := -(20 - a) @@ -119,6 +122,7 @@ func NegSubFromConst(a int) int { } func NegAddFromConstNeg(a int) int { + // loong64: "ADDV[U]\t\\$-40","SUBV" // ppc64x: `SUBC\tR[0-9]+,\s[$]40,\sR` // riscv64: "ADDI\t\\$-40","NEG" c := -(-40 + a) @@ -127,6 +131,7 @@ func NegAddFromConstNeg(a int) int { func SubSubNegSimplify(a, b int) int { // amd64:"NEGQ" + // loong64:"SUBV" // ppc64x:"NEG" // riscv64:"NEG",-"SUB" r := (a - b) - a @@ -135,6 +140,7 @@ func SubSubNegSimplify(a, b int) int { func SubAddSimplify(a, b int) int { // amd64:-"SUBQ",-"ADDQ" + // loong64:-"SUBV",-"ADDV" // ppc64x:-"SUB",-"ADD" // riscv64:-"SUB",-"ADD" r := a + (b - a) @@ -143,6 +149,7 @@ func SubAddSimplify(a, b int) int { func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) { // amd64:-"ADDQ" + // loong64:"SUBV",-"ADDV" r := (a + b) - (a + c) // amd64:-"ADDQ" r1 := (a + b) - (c + a) @@ -151,6 +158,7 @@ func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) { // amd64:-"ADDQ" r3 := (b + a) - (c + a) // amd64:-"SUBQ" + // loong64:"ADDV",-"SUBV" r4 := (a - c) + (c + b) // amd64:-"SUBQ" r5 := (a - c) + (b + c) @@ -159,6 +167,7 @@ func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) { func SubAddNegSimplify(a, b int) int { // amd64:"NEGQ",-"ADDQ",-"SUBQ" + // loong64:"SUBV",-"ADDV" // ppc64x:"NEG",-"ADD",-"SUB" // riscv64:"NEG",-"ADD",-"SUB" r := a - (b + a) @@ -167,6 +176,7 @@ func SubAddNegSimplify(a, b int) int { func AddAddSubSimplify(a, b, c int) int { // amd64:-"SUBQ" + // loong64:"ADDV",-"SUBV" // ppc64x:-"SUB" // riscv64:"ADD","ADD",-"SUB" r := a + (b + (c - a)) |