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comparison test/CodeGen/X86/2012-08-07-CmpISelBug.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children c2174574ed3a
comparison
equal deleted inserted replaced
-1:000000000000 0:95c75e76d11b
1 ; RUN: llc < %s -mtriple=x86_64-apple-macosx | FileCheck %s
2
3 ; Cmp lowering should not look past the truncate unless the high bits are known
4 ; zero.
5 ; rdar://12027825
6
7 define void @foo(i8 %arg4, i32 %arg5, i32* %arg14) nounwind {
8 bb:
9 ; CHECK-LABEL: foo:
10 ; CHECK-NOT: testl
11 ; CHECK: testb
12 %tmp48 = zext i8 %arg4 to i32
13 %tmp49 = and i32 %tmp48, 32
14 %tmp50 = add i32 %tmp49, 1593371643
15 %tmp55 = sub i32 %tmp50, 0
16 %tmp56 = add i32 %tmp55, 7787538
17 %tmp57 = xor i32 %tmp56, 1601159181
18 %tmp58 = xor i32 %arg5, 1601159181
19 %tmp59 = and i32 %tmp57, %tmp58
20 %tmp60 = add i32 %tmp59, -1263900958
21 %tmp67 = sub i32 %tmp60, 0
22 %tmp103 = xor i32 %tmp56, 13
23 %tmp104 = trunc i32 %tmp103 to i8
24 %tmp105 = sub i8 0, %tmp104
25 %tmp106 = add i8 %tmp105, -103
26 %tmp113 = sub i8 %tmp106, 0
27 %tmp114 = add i8 %tmp113, -72
28 %tmp141 = icmp ne i32 %tmp67, -1263900958
29 %tmp142 = select i1 %tmp141, i8 %tmp114, i8 undef
30 %tmp143 = xor i8 %tmp142, 81
31 %tmp144 = zext i8 %tmp143 to i32
32 %tmp145 = add i32 %tmp144, 2062143348
33 %tmp152 = sub i32 %tmp145, 0
34 store i32 %tmp152, i32* %arg14
35 ret void
36 }