.gitignore added
[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.1.1-0.20210319172145-bda8f5cee399 / container / intsets / popcnt_amd64.s
diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.1.1-0.20210319172145-bda8f5cee399/container/intsets/popcnt_amd64.s b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.1.1-0.20210319172145-bda8f5cee399/container/intsets/popcnt_amd64.s
new file mode 100644 (file)
index 0000000..05c3d6f
--- /dev/null
@@ -0,0 +1,30 @@
+// Copyright 2015 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.
+
+// +build amd64,!appengine,!gccgo
+
+#include "textflag.h"
+
+// func havePOPCNT() bool
+TEXT ·havePOPCNT(SB),4,$0
+       MOVQ    $1, AX
+       CPUID
+       SHRQ    $23, CX
+       ANDQ    $1, CX
+       MOVB    CX, ret+0(FP)
+       RET
+
+// func popcnt(word) int
+TEXT ·popcnt(SB),NOSPLIT,$0-8
+       XORQ    AX, AX
+       MOVQ    x+0(FP), SI
+       // POPCNT (SI), AX is not recognized by Go assembler,
+       // so we assemble it ourselves.
+       BYTE    $0xf3
+       BYTE    $0x48
+       BYTE    $0x0f
+       BYTE    $0xb8
+       BYTE    $0xc6
+       MOVQ    AX, ret+8(FP)
+       RET