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avo/tests/alloc/zeroing/zeroing_test.go

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all: AVX-512 (#217) Extends avo to support most AVX-512 instruction sets. The instruction type is extended to support suffixes. The K family of opmask registers is added to the register package, and the operand package is updated to support the new operand types. Move instruction deduction in `Load` and `Store` is extended to support KMOV* and VMOV* forms. Internal code generation packages were overhauled. Instruction database loading required various messy changes to account for the additional complexities of the AVX-512 instruction sets. The internal/api package was added to introduce a separation between instruction forms in the database, and the functions avo provides to create them. This was required since with instruction suffixes there is no longer a one-to-one mapping between instruction constructors and opcodes. AVX-512 bloated generated source code size substantially, initially increasing compilation and CI test times to an unacceptable level. Two changes were made to address this: 1. Instruction constructors in the `x86` package moved to an optab-based approach. This compiles substantially faster than the verbose code generation we had before. 2. The most verbose code-generated tests are moved under build tags and limited to a stress test mode. Stress test builds are run on schedule but not in regular CI. An example of AVX-512 accelerated 16-lane MD5 is provided to demonstrate and test the new functionality. Updates #20 #163 #229 Co-authored-by: Vaughn Iverson <vsivsi@yahoo.com>
2021-11-12 18:35:36 -08:00
package zeroing
import (
"testing"
"golang.org/x/sys/cpu"
)
//go:generate go run asm.go -out zeroing.s -stubs stub.go
func TestZeroing(t *testing.T) {
const (
n = 32
expect = n * (n + 1) / 2
)
if !cpu.X86.HasAVX512F {
t.Skip("require AVX512F")
}
var got [8]uint64
Zeroing(&got)
for i := 0; i < 8; i++ {
if got[i] != expect {
t.Errorf("got[%d] = %d; expect %d", i, got[i], expect)
}
}
}