| Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1 | ; This is a basic sanity check for constant propagation. The add instruction |
| Reid Spencer | c6b9efa | 2007-04-13 22:33:10 +0000 | [diff] [blame] | 2 | ; and phi instruction should be eliminated. |
| 3 | |
| Dan Gohman | f2f6ce6 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 4 | ; RUN: opt < %s -sccp -S | not grep phi |
| 5 | ; RUN: opt < %s -sccp -S | not grep add |
| Reid Spencer | c6b9efa | 2007-04-13 22:33:10 +0000 | [diff] [blame] | 6 | |
| 7 | define i128 @test(i1 %B) { |
| 8 | br i1 %B, label %BB1, label %BB2 |
| 9 | BB1: |
| 10 | %Val = add i128 0, 1 |
| 11 | br label %BB3 |
| 12 | BB2: |
| 13 | br label %BB3 |
| 14 | BB3: |
| 15 | %Ret = phi i128 [%Val, %BB1], [1, %BB2] |
| 16 | ret i128 %Ret |
| 17 | } |