[DAGCombiner] Add support for TRUNCATE + FP_EXTEND vector constant folding

[oota-llvm.git] / test / CodeGen / X86 / vector-trunc.ll

diff --git a/test/CodeGen/X86/vector-trunc.ll b/test/CodeGen/X86/vector-trunc.ll
index a3360150338e8d82d0eb15877ae12bb879526e7e..d2eef9af2a25ec4c05eea0c669081d8a94c85d97 100644 (file)
--- a/test/CodeGen/X86/vector-trunc.ll
+++ b/test/CodeGen/X86/vector-trunc.ll
@@ -221,3 +221,20 @@ entry:
   %1 = bitcast <8 x i8> %0 to i64
   ret i64 %1
 }
+
+define <16 x i8> @trunc16i64_const() {
+; SSE-LABEL:  trunc16i64_const
+; SSE:        # BB#0: # %entry
+; SSE-NEXT:   xorps %xmm0, %xmm0
+; SSE-NEXT:   retq
+;
+; AVX-LABEL:  trunc16i64_const
+; AVX:        # BB#0: # %entry
+; AVX-NEXT:   vxorps %xmm0, %xmm0, %xmm0
+; AVX-NEXT:   retq
+
+entry:
+  %0 = trunc <16 x i64> zeroinitializer to <16 x i8>
+  %1 = shufflevector <16 x i8> %0, <16 x i8> %0, <16 x i32> <i32 28, i32 30, i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 undef, i32 14, i32 16, i32 18, i32 20, i32 22, i32 24, i32 26>
+  ret <16 x i8> %1
+}