| /* { dg-do compile { target i?86-*-* x86_64-*-* } } */ |
| /* { dg-options "-O2 -fdump-rtl-combine-all" } */ |
| |
| /* This testcase checks if combine tries to combine sequences where the last |
| insn has a clobber of a reg, and a previous insn sets that reg. |
| |
| In this case, we have three insns |
| |
| (set flags (compare a b)) |
| (set tmp (eq flags 0)) |
| (parallel [(set dst (neg tmp)) |
| (clobber flags)]) |
| |
| Previously, combine would not try the three-insn combination because of |
| the set and clobber of flags. Now it does. Test that. */ |
| |
| |
| int f(int a, int b) { return -(a == b); } |
| |
| /* This regexp works for reg parameters as well as mem parameters. */ |
| /* { dg-final { scan-rtl-dump {neg:SI[^:]*eq:SI[^:]*:SI} "combine" } } */ |
