1 files changed, 466 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AArch64/unfold-masked-merge-vector-variablemask.ll b/llvm/test/CodeGen/AArch64/unfold-masked-merge-vector-variablemask.ll
new file mode 100644
index 00000000000..c3199cc3bee
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/unfold-masked-merge-vector-variablemask.ll
@@ -0,0 +1,466 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; All the advanced stuff (negative tests, commutativity) is handled in the
+; scalar version of the test only.
+
+; ============================================================================ ;
+; 8-bit vector width
+; ============================================================================ ;
+
+define <1 x i8> @out_v1i8(<1 x i8> %x, <1 x i8> %y, <1 x i8> %mask) nounwind {
+; CHECK-LABEL: out_v1i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <1 x i8> %x, %mask
+  %notmask = xor <1 x i8> %mask, <i8 -1>
+  %my = and <1 x i8> %y, %notmask
+  %r = or <1 x i8> %mx, %my
+  ret <1 x i8> %r
+}
+
+; ============================================================================ ;
+; 16-bit vector width
+; ============================================================================ ;
+
+define <2 x i8> @out_v2i8(<2 x i8> %x, <2 x i8> %y, <2 x i8> %mask) nounwind {
+; CHECK-LABEL: out_v2i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d3, #0x0000ff000000ff
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v2.8b, v2.8b, v3.8b
+; CHECK-NEXT:    and v1.8b, v1.8b, v2.8b
+; CHECK-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %mx = and <2 x i8> %x, %mask
+  %notmask = xor <2 x i8> %mask, <i8 -1, i8 -1>
+  %my = and <2 x i8> %y, %notmask
+  %r = or <2 x i8> %mx, %my
+  ret <2 x i8> %r
+}
+
+define <1 x i16> @out_v1i16(<1 x i16> %x, <1 x i16> %y, <1 x i16> %mask) nounwind {
+; CHECK-LABEL: out_v1i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <1 x i16> %x, %mask
+  %notmask = xor <1 x i16> %mask, <i16 -1>
+  %my = and <1 x i16> %y, %notmask
+  %r = or <1 x i16> %mx, %my
+  ret <1 x i16> %r
+}
+
+; ============================================================================ ;
+; 32-bit vector width
+; ============================================================================ ;
+
+define <4 x i8> @out_v4i8(<4 x i8> %x, <4 x i8> %y, <4 x i8> %mask) nounwind {
+; CHECK-LABEL: out_v4i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d3, #0xff00ff00ff00ff
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v2.8b, v2.8b, v3.8b
+; CHECK-NEXT:    and v1.8b, v1.8b, v2.8b
+; CHECK-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %mx = and <4 x i8> %x, %mask
+  %notmask = xor <4 x i8> %mask, <i8 -1, i8 -1, i8 -1, i8 -1>
+  %my = and <4 x i8> %y, %notmask
+  %r = or <4 x i8> %mx, %my
+  ret <4 x i8> %r
+}
+
+define <4 x i8> @out_v4i8_undef(<4 x i8> %x, <4 x i8> %y, <4 x i8> %mask) nounwind {
+; CHECK-LABEL: out_v4i8_undef:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d3, #0xff00ff00ff00ff
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v2.8b, v2.8b, v3.8b
+; CHECK-NEXT:    and v1.8b, v1.8b, v2.8b
+; CHECK-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %mx = and <4 x i8> %x, %mask
+  %notmask = xor <4 x i8> %mask, <i8 -1, i8 -1, i8 undef, i8 -1>
+  %my = and <4 x i8> %y, %notmask
+  %r = or <4 x i8> %mx, %my
+  ret <4 x i8> %r
+}
+
+define <2 x i16> @out_v2i16(<2 x i16> %x, <2 x i16> %y, <2 x i16> %mask) nounwind {
+; CHECK-LABEL: out_v2i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d3, #0x00ffff0000ffff
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v2.8b, v2.8b, v3.8b
+; CHECK-NEXT:    and v1.8b, v1.8b, v2.8b
+; CHECK-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %mx = and <2 x i16> %x, %mask
+  %notmask = xor <2 x i16> %mask, <i16 -1, i16 -1>
+  %my = and <2 x i16> %y, %notmask
+  %r = or <2 x i16> %mx, %my
+  ret <2 x i16> %r
+}
+
+define <1 x i32> @out_v1i32(<1 x i32> %x, <1 x i32> %y, <1 x i32> %mask) nounwind {
+; CHECK-LABEL: out_v1i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <1 x i32> %x, %mask
+  %notmask = xor <1 x i32> %mask, <i32 -1>
+  %my = and <1 x i32> %y, %notmask
+  %r = or <1 x i32> %mx, %my
+  ret <1 x i32> %r
+}
+
+; ============================================================================ ;
+; 64-bit vector width
+; ============================================================================ ;
+
+define <8 x i8> @out_v8i8(<8 x i8> %x, <8 x i8> %y, <8 x i8> %mask) nounwind {
+; CHECK-LABEL: out_v8i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <8 x i8> %x, %mask
+  %notmask = xor <8 x i8> %mask, <i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1>
+  %my = and <8 x i8> %y, %notmask
+  %r = or <8 x i8> %mx, %my
+  ret <8 x i8> %r
+}
+
+define <4 x i16> @out_v4i16(<4 x i16> %x, <4 x i16> %y, <4 x i16> %mask) nounwind {
+; CHECK-LABEL: out_v4i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <4 x i16> %x, %mask
+  %notmask = xor <4 x i16> %mask, <i16 -1, i16 -1, i16 -1, i16 -1>
+  %my = and <4 x i16> %y, %notmask
+  %r = or <4 x i16> %mx, %my
+  ret <4 x i16> %r
+}
+
+define <4 x i16> @out_v4i16_undef(<4 x i16> %x, <4 x i16> %y, <4 x i16> %mask) nounwind {
+; CHECK-LABEL: out_v4i16_undef:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <4 x i16> %x, %mask
+  %notmask = xor <4 x i16> %mask, <i16 -1, i16 -1, i16 undef, i16 -1>
+  %my = and <4 x i16> %y, %notmask
+  %r = or <4 x i16> %mx, %my
+  ret <4 x i16> %r
+}
+
+define <2 x i32> @out_v2i32(<2 x i32> %x, <2 x i32> %y, <2 x i32> %mask) nounwind {
+; CHECK-LABEL: out_v2i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <2 x i32> %x, %mask
+  %notmask = xor <2 x i32> %mask, <i32 -1, i32 -1>
+  %my = and <2 x i32> %y, %notmask
+  %r = or <2 x i32> %mx, %my
+  ret <2 x i32> %r
+}
+
+define <1 x i64> @out_v1i64(<1 x i64> %x, <1 x i64> %y, <1 x i64> %mask) nounwind {
+; CHECK-LABEL: out_v1i64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.8b, v0.8b, v1.8b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <1 x i64> %x, %mask
+  %notmask = xor <1 x i64> %mask, <i64 -1>
+  %my = and <1 x i64> %y, %notmask
+  %r = or <1 x i64> %mx, %my
+  ret <1 x i64> %r
+}
+
+; ============================================================================ ;
+; 128-bit vector width
+; ============================================================================ ;
+
+define <16 x i8> @out_v16i8(<16 x i8> %x, <16 x i8> %y, <16 x i8> %mask) nounwind {
+; CHECK-LABEL: out_v16i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.16b, v0.16b, v1.16b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <16 x i8> %x, %mask
+  %notmask = xor <16 x i8> %mask, <i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1>
+  %my = and <16 x i8> %y, %notmask
+  %r = or <16 x i8> %mx, %my
+  ret <16 x i8> %r
+}
+
+define <8 x i16> @out_v8i16(<8 x i16> %x, <8 x i16> %y, <8 x i16> %mask) nounwind {
+; CHECK-LABEL: out_v8i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.16b, v0.16b, v1.16b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <8 x i16> %x, %mask
+  %notmask = xor <8 x i16> %mask, <i16 -1, i16 -1, i16 -1, i16 -1, i16 -1, i16 -1, i16 -1, i16 -1>
+  %my = and <8 x i16> %y, %notmask
+  %r = or <8 x i16> %mx, %my
+  ret <8 x i16> %r
+}
+
+define <4 x i32> @out_v4i32(<4 x i32> %x, <4 x i32> %y, <4 x i32> %mask) nounwind {
+; CHECK-LABEL: out_v4i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.16b, v0.16b, v1.16b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <4 x i32> %x, %mask
+  %notmask = xor <4 x i32> %mask, <i32 -1, i32 -1, i32 -1, i32 -1>
+  %my = and <4 x i32> %y, %notmask
+  %r = or <4 x i32> %mx, %my
+  ret <4 x i32> %r
+}
+
+define <4 x i32> @out_v4i32_undef(<4 x i32> %x, <4 x i32> %y, <4 x i32> %mask) nounwind {
+; CHECK-LABEL: out_v4i32_undef:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.16b, v0.16b, v1.16b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <4 x i32> %x, %mask
+  %notmask = xor <4 x i32> %mask, <i32 -1, i32 -1, i32 undef, i32 -1>
+  %my = and <4 x i32> %y, %notmask
+  %r = or <4 x i32> %mx, %my
+  ret <4 x i32> %r
+}
+
+define <2 x i64> @out_v2i64(<2 x i64> %x, <2 x i64> %y, <2 x i64> %mask) nounwind {
+; CHECK-LABEL: out_v2i64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    bsl v2.16b, v0.16b, v1.16b
+; CHECK-NEXT:    mov v0.16b, v2.16b
+; CHECK-NEXT:    ret
+  %mx = and <2 x i64> %x, %mask
+  %notmask = xor <2 x i64> %mask, <i64 -1, i64 -1>
+  %my = and <2 x i64> %y, %notmask
+  %r = or <2 x i64> %mx, %my
+  ret <2 x i64> %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; ============================================================================ ;
+; 8-bit vector width
+; ============================================================================ ;
+
+define <1 x i8> @in_v1i8(<1 x i8> %x, <1 x i8> %y, <1 x i8> %mask) nounwind {
+; CHECK-LABEL: in_v1i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <1 x i8> %x, %y
+  %n1 = and <1 x i8> %n0, %mask
+  %r = xor <1 x i8> %n1, %y
+  ret <1 x i8> %r
+}
+
+; ============================================================================ ;
+; 16-bit vector width
+; ============================================================================ ;
+
+define <2 x i8> @in_v2i8(<2 x i8> %x, <2 x i8> %y, <2 x i8> %mask) nounwind {
+; CHECK-LABEL: in_v2i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <2 x i8> %x, %y
+  %n1 = and <2 x i8> %n0, %mask
+  %r = xor <2 x i8> %n1, %y
+  ret <2 x i8> %r
+}
+
+define <1 x i16> @in_v1i16(<1 x i16> %x, <1 x i16> %y, <1 x i16> %mask) nounwind {
+; CHECK-LABEL: in_v1i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <1 x i16> %x, %y
+  %n1 = and <1 x i16> %n0, %mask
+  %r = xor <1 x i16> %n1, %y
+  ret <1 x i16> %r
+}
+
+; ============================================================================ ;
+; 32-bit vector width
+; ============================================================================ ;
+
+define <4 x i8> @in_v4i8(<4 x i8> %x, <4 x i8> %y, <4 x i8> %mask) nounwind {
+; CHECK-LABEL: in_v4i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <4 x i8> %x, %y
+  %n1 = and <4 x i8> %n0, %mask
+  %r = xor <4 x i8> %n1, %y
+  ret <4 x i8> %r
+}
+
+define <2 x i16> @in_v2i16(<2 x i16> %x, <2 x i16> %y, <2 x i16> %mask) nounwind {
+; CHECK-LABEL: in_v2i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <2 x i16> %x, %y
+  %n1 = and <2 x i16> %n0, %mask
+  %r = xor <2 x i16> %n1, %y
+  ret <2 x i16> %r
+}
+
+define <1 x i32> @in_v1i32(<1 x i32> %x, <1 x i32> %y, <1 x i32> %mask) nounwind {
+; CHECK-LABEL: in_v1i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <1 x i32> %x, %y
+  %n1 = and <1 x i32> %n0, %mask
+  %r = xor <1 x i32> %n1, %y
+  ret <1 x i32> %r
+}
+
+; ============================================================================ ;
+; 64-bit vector width
+; ============================================================================ ;
+
+define <8 x i8> @in_v8i8(<8 x i8> %x, <8 x i8> %y, <8 x i8> %mask) nounwind {
+; CHECK-LABEL: in_v8i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <8 x i8> %x, %y
+  %n1 = and <8 x i8> %n0, %mask
+  %r = xor <8 x i8> %n1, %y
+  ret <8 x i8> %r
+}
+
+define <4 x i16> @in_v4i16(<4 x i16> %x, <4 x i16> %y, <4 x i16> %mask) nounwind {
+; CHECK-LABEL: in_v4i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <4 x i16> %x, %y
+  %n1 = and <4 x i16> %n0, %mask
+  %r = xor <4 x i16> %n1, %y
+  ret <4 x i16> %r
+}
+
+define <2 x i32> @in_v2i32(<2 x i32> %x, <2 x i32> %y, <2 x i32> %mask) nounwind {
+; CHECK-LABEL: in_v2i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <2 x i32> %x, %y
+  %n1 = and <2 x i32> %n0, %mask
+  %r = xor <2 x i32> %n1, %y
+  ret <2 x i32> %r
+}
+
+define <1 x i64> @in_v1i64(<1 x i64> %x, <1 x i64> %y, <1 x i64> %mask) nounwind {
+; CHECK-LABEL: in_v1i64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    and v0.8b, v0.8b, v2.8b
+; CHECK-NEXT:    eor v0.8b, v0.8b, v1.8b
+; CHECK-NEXT:    ret
+  %n0 = xor <1 x i64> %x, %y
+  %n1 = and <1 x i64> %n0, %mask
+  %r = xor <1 x i64> %n1, %y
+  ret <1 x i64> %r
+}
+
+; ============================================================================ ;
+; 128-bit vector width
+; ============================================================================ ;
+
+define <16 x i8> @in_v16i8(<16 x i8> %x, <16 x i8> %y, <16 x i8> %mask) nounwind {
+; CHECK-LABEL: in_v16i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    and v0.16b, v0.16b, v2.16b
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    ret
+  %n0 = xor <16 x i8> %x, %y
+  %n1 = and <16 x i8> %n0, %mask
+  %r = xor <16 x i8> %n1, %y
+  ret <16 x i8> %r
+}
+
+define <8 x i16> @in_v8i16(<8 x i16> %x, <8 x i16> %y, <8 x i16> %mask) nounwind {
+; CHECK-LABEL: in_v8i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    and v0.16b, v0.16b, v2.16b
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    ret
+  %n0 = xor <8 x i16> %x, %y
+  %n1 = and <8 x i16> %n0, %mask
+  %r = xor <8 x i16> %n1, %y
+  ret <8 x i16> %r
+}
+
+define <4 x i32> @in_v4i32(<4 x i32> %x, <4 x i32> %y, <4 x i32> %mask) nounwind {
+; CHECK-LABEL: in_v4i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    and v0.16b, v0.16b, v2.16b
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    ret
+  %n0 = xor <4 x i32> %x, %y
+  %n1 = and <4 x i32> %n0, %mask
+  %r = xor <4 x i32> %n1, %y
+  ret <4 x i32> %r
+}
+
+define <2 x i64> @in_v2i64(<2 x i64> %x, <2 x i64> %y, <2 x i64> %mask) nounwind {
+; CHECK-LABEL: in_v2i64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    and v0.16b, v0.16b, v2.16b
+; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
+; CHECK-NEXT:    ret
+  %n0 = xor <2 x i64> %x, %y
+  %n1 = and <2 x i64> %n0, %mask
+  %r = xor <2 x i64> %n1, %y
+  ret <2 x i64> %r
+}