diff options
Diffstat (limited to 'test/CodeGen/AArch64/arm64-build-vector.ll')
| -rw-r--r-- | test/CodeGen/AArch64/arm64-build-vector.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-build-vector.ll b/test/CodeGen/AArch64/arm64-build-vector.ll index c109263..d0f6db0 100644 --- 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 +}
\ No newline at end of file |