| Chris Lattner | a9db34f | 2004-07-27 06:35:11 +0000 | [diff] [blame] | 1 | ; Test that pure functions are cse'd away |
| 2 | |||||
| Chris Lattner | dbd4f10 | 2004-12-17 17:11:41 +0000 | [diff] [blame^] | 3 | ; RUN: llvm-as < %s | opt -globalsmodref-aa -load-vn -gcse -instcombine | llvm-dis | not grep sub |
| Chris Lattner | a9db34f | 2004-07-27 06:35:11 +0000 | [diff] [blame] | 4 | |
| 5 | int %pure(int %X) { | ||||
| 6 | %Y = add int %X, 1 | ||||
| 7 | ret int %Y | ||||
| 8 | } | ||||
| 9 | |||||
| 10 | int %test(int %X) { | ||||
| 11 | %A = call int %pure(int %X) | ||||
| 12 | %B = call int %pure(int %X) | ||||
| 13 | %C = sub int %A, %B | ||||
| 14 | ret int %C | ||||
| 15 | } | ||||