| // 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 bytealg |
| |
| import ( |
| "internal/cpu" |
| "unsafe" |
| ) |
| |
| // Note: there's no equal_generic.go because every platform must implement at least memequal_varlen in assembly. |
| |
| // Because equal_native.go is unconditional, it's a good place to compute asm constants. |
| // TODO: find a better way to do this? |
| |
| // Offsets into internal/cpu records for use in assembly. |
| const x86_HasSSE2 = unsafe.Offsetof(cpu.X86.HasSSE2) |
| const x86_HasAVX2 = unsafe.Offsetof(cpu.X86.HasAVX2) |
| const s390x_HasVX = unsafe.Offsetof(cpu.S390X.HasVX) |
| |
| //go:noescape |
| func Equal(a, b []byte) bool |
| |
| // The compiler generates calls to runtime.memequal and runtime.memequal_varlen. |
| // In addition, the runtime calls runtime.memequal explicitly. |
| // Those functions are implemented in this package. |
