1 files changed, 73 insertions, 0 deletions
diff --git a/test/CodeGen/X86/palignr.ll b/test/CodeGen/X86/palignr.ll
new file mode 100644
index 00000000000..6875fb33924
--- /dev/null
+++ b/test/CodeGen/X86/palignr.ll
@@ -0,0 +1,73 @@
+; RUN: llc < %s -march=x86 -mcpu=core2 -mattr=+ssse3 | FileCheck %s
+; RUN: llc < %s -march=x86 -mcpu=yonah | FileCheck --check-prefix=YONAH %s
+
+define <4 x i32> @test1(<4 x i32> %A, <4 x i32> %B) nounwind {
+; CHECK: test1:
+; CHECK: pshufd
+; CHECK-YONAH: pshufd
+  %C = shufflevector <4 x i32> %A, <4 x i32> undef, <4 x i32> < i32 1, i32 2, i32 3, i32 0 >
+	ret <4 x i32> %C
+}
+
+define <4 x i32> @test2(<4 x i32> %A, <4 x i32> %B) nounwind {
+; CHECK: test2:
+; CHECK: palignr
+; CHECK-YONAH: shufps
+  %C = shufflevector <4 x i32> %A, <4 x i32> %B, <4 x i32> < i32 1, i32 2, i32 3, i32 4 >
+	ret <4 x i32> %C
+}
+
+define <4 x i32> @test3(<4 x i32> %A, <4 x i32> %B) nounwind {
+; CHECK: test3:
+; CHECK: palignr
+  %C = shufflevector <4 x i32> %A, <4 x i32> %B, <4 x i32> < i32 1, i32 2, i32 undef, i32 4 >
+	ret <4 x i32> %C
+}
+
+define <4 x i32> @test4(<4 x i32> %A, <4 x i32> %B) nounwind {
+; CHECK: test4:
+; CHECK: palignr
+  %C = shufflevector <4 x i32> %A, <4 x i32> %B, <4 x i32> < i32 6, i32 7, i32 undef, i32 1 >
+	ret <4 x i32> %C
+}
+
+define <4 x float> @test5(<4 x float> %A, <4 x float> %B) nounwind {
+; CHECK: test5:
+; CHECK: palignr
+  %C = shufflevector <4 x float> %A, <4 x float> %B, <4 x i32> < i32 6, i32 7, i32 undef, i32 1 >
+	ret <4 x float> %C
+}
+
+define <8 x i16> @test6(<8 x i16> %A, <8 x i16> %B) nounwind {
+; CHECK: test6:
+; CHECK: palignr
+  %C = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 3, i32 4, i32 undef, i32 6, i32 7, i32 8, i32 9, i32 10 >
+	ret <8 x i16> %C
+}
+
+define <8 x i16> @test7(<8 x i16> %A, <8 x i16> %B) nounwind {
+; CHECK: test7:
+; CHECK: palignr
+  %C = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 undef, i32 6, i32 undef, i32 8, i32 9, i32 10, i32 11, i32 12 >
+	ret <8 x i16> %C
+}
+
+define <16 x i8> @test8(<16 x i8> %A, <16 x i8> %B) nounwind {
+; CHECK: test8:
+; CHECK: palignr
+  %C = shufflevector <16 x i8> %A, <16 x i8> %B, <16 x i32> < i32 5, i32 6, i32 7, i32 undef, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20 >
+	ret <16 x i8> %C
+}
+
+; Check that we don't do unary (circular on single operand) palignr incorrectly.
+; (It is possible, but before this testcase was committed, it was being done
+; incorrectly.  In particular, one of the operands of the palignr node
+; was an UNDEF.)
+define <8 x i16> @test9(<8 x i16> %A, <8 x i16> %B) nounwind {
+; CHECK: test9:
+; CHECK-NOT: palignr
+; CHECK: pshufb
+  %C = shufflevector <8 x i16> %B, <8 x i16> %A, <8 x i32> < i32 undef, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 0 >
+	ret <8 x i16> %C
+}
+