------- Comment #1 from chrbr at gcc dot gnu dot org 2007-04-20 14:13 ------- Created an attachment (id=13391) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13391&action=view) Illustrative patch to not align small basic blocks
I used this patch to reduce the number of basic blocks aligned on cache-lines. My choice was not to align blocks less than 16 bytes (also tried 32 bytes) seems to give the best results. Note than never aligning doesn't degrade eebmc perfs (similar to -falign-jumps=1) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31640
