cmd/compile: on PPC64, fix sign/zero extension when masking

[gostls13.git] / test / codegen / bits.go

diff --git a/test/codegen/bits.go b/test/codegen/bits.go
index 4f70627c258cedb31a5441d03f3eb8d5341e21f8..018f5b909e6d64942c07821d451545114510765d 100644 (file)
--- a/test/codegen/bits.go
+++ b/test/codegen/bits.go
@@ -374,3 +374,23 @@ func foldConstOutOfRange(a uint64) uint64 {
        // arm64: "MOVD\t[$]19088744",-"ADD\t[$]19088744"
        return a + 0x1234568
 }
+
+// Verify sign-extended values are not zero-extended under a bit mask (#61297)
+func signextendAndMask8to64(a int8) (s, z uint64) {
+       // ppc64x: "MOVB", "ANDCC\t[$]1015,"
+       s = uint64(a) & 0x3F7
+       // ppc64x: -"MOVB", "ANDCC\t[$]247,"
+       z = uint64(uint8(a)) & 0x3F7
+       return
+
+}
+
+// Verify zero-extended values are not sign-extended under a bit mask (#61297)
+func zeroextendAndMask8to64(a int8, b int16) (x, y uint64) {
+       // ppc64x: -"MOVB\t", -"ANDCC", "MOVBZ"
+       x = uint64(a) & 0xFF
+       // ppc64x: -"MOVH\t", -"ANDCC", "MOVHZ"
+       y = uint64(b) & 0xFFFF
+       return
+
+}