1 files changed, 187 insertions, 0 deletions
diff --git a/test/codegen/noextend.go b/test/codegen/noextend.go
new file mode 100644
index 0000000..e4081e3
--- /dev/null
+++ b/test/codegen/noextend.go
@@ -0,0 +1,187 @@
+// asmcheck
+
+// 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 codegen
+
+var sval64 [8]int64
+var sval32 [8]int32
+var sval16 [8]int16
+var sval8 [8]int8
+var val64 [8]uint64
+var val32 [8]uint32
+var val16 [8]uint16
+var val8 [8]uint8
+
+// Avoid zero/sign extensions following a load
+// which has extended the value correctly.
+// Note: No tests are done for int8 since
+// an extra extension is usually needed due to
+// no signed byte load.
+
+func set16(x8 int8, u8 *uint8, y8 int8, z8 uint8) {
+	// Truncate not needed, load does sign/zero extend
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	val16[0] = uint16(*u8)
+
+	// AND not needed due to size
+	// ppc64x:-"ANDCC"
+	sval16[1] = 255 & int16(x8+y8)
+
+	// ppc64x:-"ANDCC"
+	val16[1] = 255 & uint16(*u8+z8)
+
+}
+func shiftidx(u8 *uint8, x16 *int16, u16 *uint16) {
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	val16[0] = uint16(sval16[*u8>>2])
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	sval16[1] = int16(val16[*x16>>1])
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	val16[1] = uint16(sval16[*u16>>2])
+
+}
+
+func setnox(x8 int8, u8 *uint8, y8 *int8, z8 *uint8, x16 *int16, u16 *uint16, x32 *int32, u32 *uint32) {
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	val16[0] = uint16(*u8)
+
+	// AND not needed due to size
+	// ppc64x:-"ANDCC"
+	sval16[1] = 255 & int16(x8+*y8)
+
+	// ppc64x:-"ANDCC"
+	val16[1] = 255 & uint16(*u8+*z8)
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	sval32[1] = int32(*x16)
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	val32[0] = uint32(*u8)
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	val32[1] = uint32(*u16)
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	sval64[1] = int64(*x16)
+
+	// ppc64x:-"MOVW\tR\\d+,\\sR\\d+"
+	sval64[2] = int64(*x32)
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	val64[0] = uint64(*u8)
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	val64[1] = uint64(*u16)
+
+	// ppc64x:-"MOVWZ\tR\\d+,\\sR\\d+"
+	val64[2] = uint64(*u32)
+}
+
+func cmp16(u8 *uint8, x32 *int32, u32 *uint32, x64 *int64, u64 *uint64) bool {
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	if uint16(*u8) == val16[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	if uint16(*u32>>16) == val16[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	if uint16(*u64>>48) == val16[0] {
+		return true
+	}
+
+	// Verify the truncates are using the correct sign.
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	if int16(*x32) == sval16[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	if uint16(*u32) == val16[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	if int16(*x64) == sval16[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	if uint16(*u64) == val16[0] {
+		return true
+	}
+
+	return false
+}
+
+func cmp32(u8 *uint8, x16 *int16, u16 *uint16, x64 *int64, u64 *uint64) bool {
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	if uint32(*u8) == val32[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	if int32(*x16) == sval32[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	if uint32(*u16) == val32[0] {
+		return true
+	}
+
+	// Verify the truncates are using the correct sign.
+	// ppc64x:-"MOVWZ\tR\\d+,\\sR\\d+"
+	if int32(*x64) == sval32[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVW\tR\\d+,\\sR\\d+"
+	if uint32(*u64) == val32[0] {
+		return true
+	}
+
+	return false
+}
+
+func cmp64(u8 *uint8, x16 *int16, u16 *uint16, x32 *int32, u32 *uint32) bool {
+
+	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
+	if uint64(*u8) == val64[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"
+	if int64(*x16) == sval64[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVHZ\tR\\d+,\\sR\\d+"
+	if uint64(*u16) == val64[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVW\tR\\d+,\\sR\\d+"
+	if int64(*x32) == sval64[0] {
+		return true
+	}
+
+	// ppc64x:-"MOVWZ\tR\\d+,\\sR\\d+"
+	if uint64(*u32) == val64[0] {
+		return true
+	}
+	return false
+}