blob: 572f97c572ee527ef27dd58792e0aa9f2a1711df [file] [log] [blame]
Chris Lattner7a2bdde2011-04-15 05:18:47 +00001; This is a basic sanity check for constant propagation. It tests the basic
Reid Spencerc6b9efa2007-04-13 22:33:10 +00002; logic operations.
3
4
Dan Gohman9c7a9882009-09-08 22:57:49 +00005; RUN: opt < %s -sccp -S | not grep and
6; RUN: opt < %s -sccp -S | not grep trunc
Chandler Carruth4177e6f2012-07-02 12:47:22 +00007; RUN: opt < %s -sccp -S | grep "ret i100 -1"
Reid Spencerc6b9efa2007-04-13 22:33:10 +00008
9define i100 @test(i133 %A) {
10 %B = and i133 0, %A
11 %C = icmp sgt i133 %B, 0
12 br i1 %C, label %BB1, label %BB2
13BB1:
14 %t3 = xor i133 %B, -1
15 %t4 = trunc i133 %t3 to i100
16 br label %BB3
17BB2:
18 %f1 = or i133 -1, %A
19 %f2 = lshr i133 %f1, 33
20 %f3 = trunc i133 %f2 to i100
21 br label %BB3
22BB3:
23 %Ret = phi i100 [%t4, %BB1], [%f3, %BB2]
24 ret i100 %Ret
25}