------- Comment #7 from pinskia at gcc dot gnu dot org 2007-05-20 21:50 ------- > If it can use blen_11 instead of blen_3(D), it may compile. If forwprop can't > deal some asm stmts very well, it should skip those asm stmts.
It cannot use blen_11 instead of blen_3 because the asm will have changed the value. forwprop does not even see the asm at all (how would it unless it looked for all SSAnames that had blen in them which is hard to do in the first place?). What forwprop is doing is legal but creates a little extra register pressure which in turn causes GCC's register allocator to go, I don't know what the fuck to do because I am a stupid register allocator. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32004
