Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | ; This is a basic sanity check for constant propogation. It tests the basic |
| 2 | ; logic operations. |
| 3 | |
| 4 | |
Dan Gohman | fa54069 | 2009-09-08 22:57:49 +0000 | [diff] [blame^] | 5 | ; RUN: opt < %s -sccp -S | not grep and |
| 6 | ; RUN: opt < %s -sccp -S | not grep trunc |
| 7 | ; RUN: opt < %s -sccp -S | grep {ret i100 -1} |
Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 8 | |
| 9 | define 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 |
| 13 | BB1: |
| 14 | %t3 = xor i133 %B, -1 |
| 15 | %t4 = trunc i133 %t3 to i100 |
| 16 | br label %BB3 |
| 17 | BB2: |
| 18 | %f1 = or i133 -1, %A |
| 19 | %f2 = lshr i133 %f1, 33 |
| 20 | %f3 = trunc i133 %f2 to i100 |
| 21 | br label %BB3 |
| 22 | BB3: |
| 23 | %Ret = phi i100 [%t4, %BB1], [%f3, %BB2] |
| 24 | ret i100 %Ret |
| 25 | } |