1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_shuffle-30.ll b/test/CodeGen/X86/vec_shuffle-30.ll
new file mode 100644
index 0000000..3f69150
--- /dev/null
+++ b/test/CodeGen/X86/vec_shuffle-30.ll
@@ -0,0 +1,22 @@
+; RUN: llc < %s -march=x86 -mattr=sse41 -disable-mmx -o %t
+; RUN: grep pshufhw %t | grep -- -95 | count 1
+; RUN: grep shufps %t | count 1
+; RUN: not grep pslldq %t
+
+; Test case when creating pshufhw, we incorrectly set the higher order bit
+; for an undef,
+define void @test(<8 x i16>* %dest, <8 x i16> %in) nounwind {
+entry:
+  %0 = load <8 x i16>* %dest
+  %1 = shufflevector <8 x i16> %0, <8 x i16> %in, <8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14>
+  store <8 x i16> %1, <8 x i16>* %dest
+  ret void
+}                              
+
+; A test case where we shouldn't generate a punpckldq but a pshufd and a pslldq
+define void @test2(<4 x i32>* %dest, <4 x i32> %in) nounwind {
+entry:
+  %0 = shufflevector <4 x i32> %in, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> < i32 undef, i32 5, i32 undef, i32 2>
+  store <4 x i32> %0, <4 x i32>* %dest
+  ret void
+}