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cmd/compile: add remaining >v1 instructions to v1-only test

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roundsd and FMA (vfmadd231sd).

Change-Id: I2d91332667e577bd9bb903ac58904f62b8454128
Reviewed-on: https://go-review.googlesource.com/c/go/+/354069
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Keith Randall 2021-10-05 10:21:09 -07:00
parent 5140ad104b
commit 5d946f1892
1 changed files with 35 additions and 2 deletions
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37
src/cmd/compile/internal/amd64/versions_test.go
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@ -11,6 +11,7 @@ import (
"fmt"
"internal/testenv"
"io"
"math"
"math/bits"
"os"
"os/exec"
@ -107,7 +108,7 @@ func clobber(t *testing.T, src string, dst *os.File, opcodes map[string]bool) {
if err := cmd.Start(); err != nil {
t.Fatal(err)
}
re = regexp.MustCompile(`^\s*([0-9a-f]+):\s*((?:[0-9a-f][0-9a-f] )+)\s*([a-z]+)`)
re = regexp.MustCompile(`^\s*([0-9a-f]+):\s*((?:[0-9a-f][0-9a-f] )+)\s*([a-z0-9]+)`)
}
// Find all the instruction addresses we need to edit.
@ -209,7 +210,8 @@ var featureToOpcodes = map[string][]string{
// native objdump doesn't include [QL] on linux.
"popcnt": []string{"popcntq", "popcntl", "popcnt"},
"bmi1": []string{"andnq", "andnl", "andn", "blsiq", "blsil", "blsi", "blsmskq", "blsmskl", "blsmsk", "blsrq", "blsrl", "blsr", "tzcntq", "tzcntl", "tzcnt"},
// TODO: more?
"sse41": []string{"roundsd"},
"fma": []string{"vfmadd231sd"},
}
// Test to use POPCNT instruction, if available
@ -333,3 +335,34 @@ func TestTrailingZeros(t *testing.T) {
}
}
}
func TestRound(t *testing.T) {
for _, tt := range []struct {
x, want float64
}{
{1.4, 1},
{1.5, 2},
{1.6, 2},
{2.4, 2},
{2.5, 2},
{2.6, 3},
} {
if got := math.RoundToEven(tt.x); got != tt.want {
t.Errorf("RoundToEven(%f) = %f, want %f", tt.x, got, tt.want)
}
}
}
func TestFMA(t *testing.T) {
for _, tt := range []struct {
x, y, z, want float64
}{
{2, 3, 4, 10},
{3, 4, 5, 17},
} {
if got := math.FMA(tt.x, tt.y, tt.z); got != tt.want {
t.Errorf("FMA(%f,%f,%f) = %f, want %f", tt.x, tt.y, tt.z, got, tt.want)
}
}
}