source: icGREP/icgrep-devel/llvm-3.6.1.src/test/Transforms/ConstProp/shift.ll @ 4664

Last change on this file since 4664 was 4664, checked in by cameron, 4 years ago

Upgrade LLVM to 3.6.1

File size: 1.5 KB
Line 
1; RUN: opt < %s -constprop -S | FileCheck %s
2
3; CHECK-LABEL: shift_undef_64
4define void @shift_undef_64(i64* %p) {
5  %r1 = lshr i64 -1, 4294967296 ; 2^32
6  ; CHECK: store i64 undef
7  store i64 %r1, i64* %p
8
9  %r2 = ashr i64 -1, 4294967297 ; 2^32 + 1
10  ; CHECK: store i64 undef
11  store i64 %r2, i64* %p
12
13  %r3 = shl i64 -1, 4294967298 ; 2^32 + 2
14  ; CHECK: store i64 undef
15  store i64 %r3, i64* %p
16
17  ret void
18}
19
20; CHECK-LABEL: shift_undef_65
21define void @shift_undef_65(i65* %p) {
22  %r1 = lshr i65 2, 18446744073709551617
23  ; CHECK: store i65 undef
24  store i65 %r1, i65* %p
25
26  %r2 = ashr i65 4, 18446744073709551617
27  ; CHECK: store i65 undef
28  store i65 %r2, i65* %p
29
30  %r3 = shl i65 1, 18446744073709551617
31  ; CHECK: store i65 undef
32  store i65 %r3, i65* %p
33
34  ret void
35}
36
37; CHECK-LABEL: shift_undef_256
38define void @shift_undef_256(i256* %p) {
39  %r1 = lshr i256 2, 18446744073709551617
40  ; CHECK: store i256 undef
41  store i256 %r1, i256* %p
42
43  %r2 = ashr i256 4, 18446744073709551618
44  ; CHECK: store i256 undef
45  store i256 %r2, i256* %p
46
47  %r3 = shl i256 1, 18446744073709551619
48  ; CHECK: store i256 undef
49  store i256 %r3, i256* %p
50
51  ret void
52}
53
54; CHECK-LABEL: shift_undef_511
55define void @shift_undef_511(i511* %p) {
56  %r1 = lshr i511 -1, 1208925819614629174706276 ; 2^80 + 100
57  ; CHECK: store i511 undef
58  store i511 %r1, i511* %p
59
60  %r2 = ashr i511 -2, 1208925819614629174706200
61  ; CHECK: store i511 undef
62  store i511 %r2, i511* %p
63
64  %r3 = shl i511 -3, 1208925819614629174706180
65  ; CHECK: store i511 undef
66  store i511 %r3, i511* %p
67
68  ret void
69}
Note: See TracBrowser for help on using the repository browser.