[AArch64][FastISel] Fix integer extend optimization.

[oota-llvm.git] / test / CodeGen / AArch64 / arm64-build-vector.ll

diff --git a/test/CodeGen/AArch64/arm64-build-vector.ll b/test/CodeGen/AArch64/arm64-build-vector.ll
index c109263cedb480c8d7907e935738ca07ec12fdab..d0f6db08055121f95c4a7516e77d282a39e52d9c 100644 (file)
--- a/test/CodeGen/AArch64/arm64-build-vector.ll
+++ b/test/CodeGen/AArch64/arm64-build-vector.ll
@@ -33,3 +33,27 @@ define <4 x float>  @foo(float %a, float %b, float %c, float %d) nounwind {
   %4 = insertelement <4 x float> %3, float %d, i32 3
   ret <4 x float> %4
 }
+
+define <8 x i16> @build_all_zero(<8 x i16> %a) #1 {
+; CHECK-LABEL: build_all_zero:
+; CHECK: movz  w[[GREG:[0-9]+]], #0xae80
+; CHECK-NEXT:  fmov    s[[FREG:[0-9]+]], w[[GREG]]
+; CHECK-NEXT:  mul.8h  v0, v0, v[[FREG]]
+  %b = add <8 x i16> %a, <i16 -32768, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>
+  %c = mul <8 x i16> %b, <i16 -20864, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>
+  ret <8 x i16> %c
+}
+
+; There is an optimization in DAG Combiner as following:
+;   fold (concat_vectors (BUILD_VECTOR A, B, ...), (BUILD_VECTOR C, D, ...))
+;        -> (BUILD_VECTOR A, B, ..., C, D, ...)
+; This case checks when A,B and C,D are different types, there should be no
+; assertion failure.
+define <8 x i16> @concat_2_build_vector(<4 x i16> %in0) {
+; CHECK-LABEL: concat_2_build_vector:
+; CHECK: movi
+  %vshl_n = shl <4 x i16> %in0, <i16 8, i16 8, i16 8, i16 8>
+  %vshl_n2 = shl <4 x i16> %vshl_n, <i16 9, i16 9, i16 9, i16 9>
+  %shuffle.i = shufflevector <4 x i16> %vshl_n2, <4 x i16> zeroinitializer, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+  ret <8 x i16> %shuffle.i
+}
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