| ; RUN: llc < %s -mtriple=arm64-eabi -aarch64-neon-syntax=apple | FileCheck %s |
| |
| ; Check that building up a vector w/ only one non-zero lane initializes |
| ; intelligently. |
| define void @one_lane(i32* nocapture %out_int, i32 %skip0) nounwind { |
| ; CHECK-LABEL: one_lane: |
| ; CHECK: dup.16b v[[REG:[0-9]+]], wzr |
| ; CHECK-NEXT: ins.b v[[REG]][0], w1 |
| ; v and q are aliases, and str is preferred against st.16b when possible |
| ; rdar://11246289 |
| ; CHECK: str q[[REG]], [x0] |
| ; CHECK: ret |
| %conv = trunc i32 %skip0 to i8 |
| %vset_lane = insertelement <16 x i8> <i8 undef, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0>, i8 %conv, i32 0 |
| %tmp = bitcast i32* %out_int to <4 x i32>* |
| %tmp1 = bitcast <16 x i8> %vset_lane to <4 x i32> |
| store <4 x i32> %tmp1, <4 x i32>* %tmp, align 16 |
| ret void |
| } |
| |
| ; Check that building a vector from floats doesn't insert an unnecessary |
| ; copy for lane zero. |
| define <4 x float> @foo(float %a, float %b, float %c, float %d) nounwind { |
| ; CHECK-LABEL: foo: |
| ; CHECK-NOT: ins.s v0[0], v0[0] |
| ; CHECK: ins.s v0[1], v1[0] |
| ; CHECK: ins.s v0[2], v2[0] |
| ; CHECK: ins.s v0[3], v3[0] |
| ; CHECK: ret |
| %1 = insertelement <4 x float> undef, float %a, i32 0 |
| %2 = insertelement <4 x float> %1, float %b, i32 1 |
| %3 = insertelement <4 x float> %2, float %c, i32 2 |
| %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: mov w[[GREG:[0-9]+]], #44672 |
| ; 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 |
| } |