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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
commit | ccd992355df7192993c666236047820244914598 (patch) | |
tree | f00fea65147227b7743083c6148396f74cd66935 /test/codegen/floats.go | |
parent | Initial commit. (diff) | |
download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/codegen/floats.go')
-rw-r--r-- | test/codegen/floats.go | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/test/codegen/floats.go b/test/codegen/floats.go new file mode 100644 index 0000000..9cb62e0 --- /dev/null +++ b/test/codegen/floats.go @@ -0,0 +1,152 @@ +// asmcheck + +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package codegen + +// This file contains codegen tests related to arithmetic +// simplifications and optimizations on float types. +// For codegen tests on integer types, see arithmetic.go. + +// --------------------- // +// Strength-reduce // +// --------------------- // + +func Mul2(f float64) float64 { + // 386/sse2:"ADDSD",-"MULSD" + // amd64:"ADDSD",-"MULSD" + // arm/7:"ADDD",-"MULD" + // arm64:"FADDD",-"FMULD" + // ppc64x:"FADD",-"FMUL" + // riscv64:"FADDD",-"FMULD" + return f * 2.0 +} + +func DivPow2(f1, f2, f3 float64) (float64, float64, float64) { + // 386/sse2:"MULSD",-"DIVSD" + // amd64:"MULSD",-"DIVSD" + // arm/7:"MULD",-"DIVD" + // arm64:"FMULD",-"FDIVD" + // ppc64x:"FMUL",-"FDIV" + // riscv64:"FMULD",-"FDIVD" + x := f1 / 16.0 + + // 386/sse2:"MULSD",-"DIVSD" + // amd64:"MULSD",-"DIVSD" + // arm/7:"MULD",-"DIVD" + // arm64:"FMULD",-"FDIVD" + // ppc64x:"FMUL",-"FDIVD" + // riscv64:"FMULD",-"FDIVD" + y := f2 / 0.125 + + // 386/sse2:"ADDSD",-"DIVSD",-"MULSD" + // amd64:"ADDSD",-"DIVSD",-"MULSD" + // arm/7:"ADDD",-"MULD",-"DIVD" + // arm64:"FADDD",-"FMULD",-"FDIVD" + // ppc64x:"FADD",-"FMUL",-"FDIV" + // riscv64:"FADDD",-"FMULD",-"FDIVD" + z := f3 / 0.5 + + return x, y, z +} + +func indexLoad(b0 []float32, b1 float32, idx int) float32 { + // arm64:`FMOVS\s\(R[0-9]+\)\(R[0-9]+<<2\),\sF[0-9]+` + return b0[idx] * b1 +} + +func indexStore(b0 []float64, b1 float64, idx int) { + // arm64:`FMOVD\sF[0-9]+,\s\(R[0-9]+\)\(R[0-9]+<<3\)` + b0[idx] = b1 +} + +// ----------- // +// Fused // +// ----------- // + +func FusedAdd32(x, y, z float32) float32 { + // s390x:"FMADDS\t" + // ppc64x:"FMADDS\t" + // arm64:"FMADDS" + return x*y + z +} + +func FusedSub32_a(x, y, z float32) float32 { + // s390x:"FMSUBS\t" + // ppc64x:"FMSUBS\t" + return x*y - z +} + +func FusedSub32_b(x, y, z float32) float32 { + // arm64:"FMSUBS" + return z - x*y +} + +func FusedAdd64(x, y, z float64) float64 { + // s390x:"FMADD\t" + // ppc64x:"FMADD\t" + // arm64:"FMADDD" + return x*y + z +} + +func FusedSub64_a(x, y, z float64) float64 { + // s390x:"FMSUB\t" + // ppc64x:"FMSUB\t" + return x*y - z +} + +func FusedSub64_b(x, y, z float64) float64 { + // arm64:"FMSUBD" + return z - x*y +} + +func Cmp(f float64) bool { + // arm64:"FCMPD","(BGT|BLE|BMI|BPL)",-"CSET\tGT",-"CBZ" + return f > 4 || f < -4 +} + +func CmpZero64(f float64) bool { + // s390x:"LTDBR",-"FCMPU" + return f <= 0 +} + +func CmpZero32(f float32) bool { + // s390x:"LTEBR",-"CEBR" + return f <= 0 +} + +func CmpWithSub(a float64, b float64) bool { + f := a - b + // s390x:-"LTDBR" + return f <= 0 +} + +func CmpWithAdd(a float64, b float64) bool { + f := a + b + // s390x:-"LTDBR" + return f <= 0 +} + +// ---------------- // +// Non-floats // +// ---------------- // + +// We should make sure that the compiler doesn't generate floating point +// instructions for non-float operations on Plan 9, because floating point +// operations are not allowed in the note handler. + +func ArrayZero() [16]byte { + // amd64:"MOVUPS" + // plan9/amd64/:-"MOVUPS" + var a [16]byte + return a +} + +func ArrayCopy(a [16]byte) (b [16]byte) { + // amd64:"MOVUPS" + // plan9/amd64/:-"MOVUPS" + b = a + return +} |