| Chris Lattner | f60513f | 2005-01-17 06:25:59 +0000 | [diff] [blame] | 1 | ; This testcase was distilled from 132.ijpeg. Bsaically we cannot fold the |
| 2 | ; load into the sub instruction here as it induces a cycle in the dag, which |
| 3 | ; is invalid code (there is no correct way to order the instruction). Check |
| 4 | ; that we do not fold the load into the sub. |
| 5 | |
| Chris Lattner | 2b5d3cf | 2005-08-19 01:14:40 +0000 | [diff] [blame] | 6 | ; RUN: llvm-as < %s | llc -march=x86 | not grep 'sub.*GLOBAL' |
| Chris Lattner | f60513f | 2005-01-17 06:25:59 +0000 | [diff] [blame] | 7 | |
| 8 | %GLOBAL = external global int |
| 9 | |
| 10 | int %test(int* %P1, int* %P2, int* %P3) { |
| 11 | %L = load int* %GLOBAL |
| 12 | store int 12, int* %P2 |
| 13 | %Y = load int* %P3 |
| 14 | %Z = sub int %Y, %L |
| 15 | ret int %Z |
| 16 | } |