source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/AArch64/merge-store.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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1; RUN: llc -march aarch64 %s -o - | FileCheck %s
2; RUN: llc < %s -mtriple=aarch64-unknown-unknown  -mcpu=cyclone  | FileCheck %s --check-prefix=CYCLONE
3
4@g0 = external global <3 x float>, align 16
5@g1 = external global <3 x float>, align 4
6
7; CHECK: ldr s[[R0:[0-9]+]], {{\[}}[[R1:x[0-9]+]]{{\]}}, #4
8; CHECK: ld1{{\.?s?}} { v[[R0]]{{\.?s?}} }[1], {{\[}}[[R1]]{{\]}}
9; CHECK: str d[[R0]]
10
11define void @blam() {
12  %tmp4 = getelementptr inbounds <3 x float>, <3 x float>* @g1, i64 0, i64 0
13  %tmp5 = load <3 x float>, <3 x float>* @g0, align 16
14  %tmp6 = extractelement <3 x float> %tmp5, i64 0
15  store float %tmp6, float* %tmp4
16  %tmp7 = getelementptr inbounds float, float* %tmp4, i64 1
17  %tmp8 = load <3 x float>, <3 x float>* @g0, align 16
18  %tmp9 = extractelement <3 x float> %tmp8, i64 1
19  store float %tmp9, float* %tmp7
20  ret void;
21}
22
23
24; PR21711 - Merge vector stores into wider vector stores.
25
26; On Cyclone, the stores should not get merged into a 16-byte store because
27; unaligned 16-byte stores are slow. This test would infinite loop when
28; the fastness of unaligned accesses was not specified correctly.
29
30define void @merge_vec_extract_stores(<4 x float> %v1, <2 x float>* %ptr) {
31  %idx0 = getelementptr inbounds <2 x float>, <2 x float>* %ptr, i64 3
32  %idx1 = getelementptr inbounds <2 x float>, <2 x float>* %ptr, i64 4
33
34  %shuffle0 = shufflevector <4 x float> %v1, <4 x float> undef, <2 x i32> <i32 0, i32 1>
35  %shuffle1 = shufflevector <4 x float> %v1, <4 x float> undef, <2 x i32> <i32 2, i32 3>
36
37  store <2 x float> %shuffle0, <2 x float>* %idx0, align 8
38  store <2 x float> %shuffle1, <2 x float>* %idx1, align 8
39  ret void
40
41; CHECK-LABEL:    merge_vec_extract_stores
42; CHECK:          stur   q0, [x0, #24]
43; CHECK-NEXT:     ret
44
45; CYCLONE-LABEL:    merge_vec_extract_stores
46; CYCLONE:          ext   v1.16b, v0.16b, v0.16b, #8
47; CYCLONE-NEXT:     str   d0, [x0, #24]
48; CYCLONE-NEXT:     str   d1, [x0, #32]
49; CYCLONE-NEXT:     ret
50}
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