On 03/05/2013 09:26 AM, Jakub Jelinek wrote:
Hi!Without this patch, ifcvt extends lifetime of %eax hard register, which causes reload/LRA ICE later on. Combiner and other passes try hard not to do that, even ifcvt has code for it if x is a hard register a few lines below it, but in this case the hard register is SET_SRC (set_b). With this patch we just use the pseudo (x) which has been initialized from the hard register before the conditional. Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk? 2013-03-05 Jakub Jelinek <ja...@redhat.com> PR rtl-optimization/56484 * ifcvt.c (noce_process_if_block): Before reload if else_bb is NULL, avoid extending lifetimes of hard registers in likely to spilled or small register classes.
OK. Jeff
