go source for verification 2026-05-22

test/codegen/issue74485.go

@@ -0,0 +1,47 @@
+// asmcheck
+
+// Copyright 2025 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
+
+func divUint64(b uint64) uint64 {
+	// amd64:"SHRQ [$]63, AX"
+	return b / 9223372036854775808
+}
+
+func divUint32(b uint32) uint32 {
+	// amd64:"SHRL [$]31, AX"
+	return b / 2147483648
+}
+
+func divUint16(b uint16) uint16 {
+	// amd64:"SHRW [$]15, AX"
+	return b / 32768
+}
+
+func divUint8(b uint8) uint8 {
+	// amd64:"SHRB [$]7, AL"
+	return b / 128
+}
+
+func modUint64(b uint64) uint64 {
+	// amd64:"BTRQ [$]63, AX"
+	return b % 9223372036854775808
+}
+
+func modUint32(b uint32) uint32 {
+	// amd64:"ANDL [$]2147483647, AX"
+	return b % 2147483648
+}
+
+func modUint16(b uint16) uint16 {
+	// amd64:"ANDL [$]32767, AX"
+	return b % 32768
+}
+
+func modUint8(b uint8) uint8 {
+	// amd64:"ANDL [$]127, AX"
+	return b % 128
+}