source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/ARM/2012-11-14-subs_carry.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: 805 bytes
Line 
1; RUN: llc < %s -mtriple=thumbv7-apple-ios -arm-atomic-cfg-tidy=0 | FileCheck %s
2
3;CHECK-LABEL: foo:
4;CHECK: movs r0, #0
5;CHECK-NEXT: bx lr
6
7; Note: This test case originally checked, per r167963, for:
8;       adds
9;       adc
10;       bx
11; But SDAG now, like InstCombine, can fold everything away.
12;rdar://12028498
13
14define i32 @foo() nounwind ssp {
15entry:
16  %tmp2 = zext i32 3 to i64
17  br  label %bug_block
18
19bug_block:
20  %tmp410 = and i64 1031, 1647010
21  %tmp411 = and i64 %tmp2, -211
22  %tmp412 = shl i64 %tmp410, %tmp2
23  %tmp413 = shl i64 %tmp411, %tmp2
24  %tmp415 = and i64 %tmp413, 1
25  %tmp420 = xor i64 0, %tmp415
26  %tmp421 = and i64 %tmp412, %tmp415
27  %tmp422 = shl i64 %tmp421, 1
28  br  label %finish
29
30finish:
31  %tmp423 = lshr i64 %tmp422, 32
32  %tmp424 = trunc i64 %tmp423 to i32
33  ret i32 %tmp424
34}
35
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