1 files changed, 19 insertions, 0 deletions
diff --git a/test/CodeGen/X86/pr23246.ll b/test/CodeGen/X86/pr23246.ll
new file mode 100644
index 0000000..6eb24a6
--- /dev/null
+++ b/test/CodeGen/X86/pr23246.ll
@@ -0,0 +1,19 @@
+; RUN: llc < %s -mtriple x86_64-unknown-unknown | FileCheck %s
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+
+; PR23246
+; We're really only interested in doing something sane with the shuffle.
+
+; CHECK-LABEL: test:
+; CHECK:      movq2dq %mm0, %xmm0
+; CHECK-NEXT: pshufd {{.*}} xmm0 = xmm0[0,1,0,1]
+; CHECK-NEXT: retq
+define <2 x i64> @test(x86_mmx %a) #0 {
+entry:
+  %b = bitcast x86_mmx %a to <1 x i64>
+  %s = shufflevector <1 x i64> %b, <1 x i64> undef, <2 x i32> <i32 undef, i32 0>
+  ret <2 x i64> %s
+}
+
+attributes #0 = { nounwind }