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

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

Upgrade to llvm 3.8

File size: 1.1 KB
Line 
1; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s
2
3define i32 @test_consts(i32 %in) {
4; CHECK-LABEL: test_consts:
5; CHECK-NOT: bfxil
6; CHECK-NOT: and
7; CHECK-NOT: orr
8; CHECK: ret
9
10  %lo = and i32 %in, 65535
11  %hi = and i32 %in, -65536
12  %res = or i32 %lo, %hi
13  ret i32 %res
14}
15
16define i32 @test_generic(i32 %in, i32 %mask1, i32 %mask2) {
17; CHECK-LABEL: test_generic:
18; CHECK: orr [[FULL_MASK:w[0-9]+]], w1, w2
19; CHECK: and w0, w0, [[FULL_MASK]]
20
21  %lo = and i32 %in, %mask1
22  %hi = and i32 %in, %mask2
23  %res = or i32 %lo, %hi
24  ret i32 %res
25}
26
27; In this case the transformation isn't profitable, since %lo and %hi
28; are used more than once.
29define [3 x i32] @test_reuse(i32 %in, i32 %mask1, i32 %mask2) {
30; CHECK-LABEL: test_reuse:
31; CHECK-DAG: and w1, w0, w1
32; CHECK-DAG: and w2, w0, w2
33; CHECK-DAG: orr w0, w1, w2
34
35  %lo = and i32 %in, %mask1
36  %hi = and i32 %in, %mask2
37  %recombine = or i32 %lo, %hi
38
39  %res.tmp0 = insertvalue [3 x i32] undef, i32 %recombine, 0
40  %res.tmp1 = insertvalue [3 x i32] %res.tmp0, i32 %lo, 1
41  %res = insertvalue [3 x i32] %res.tmp1, i32 %hi, 2
42
43  ret [3 x i32] %res
44}
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