------- Comment #13 from steven at gcc dot gnu dot org 2006-01-09 21:25 ------- Created an attachment (id=10601) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10601&action=view) proposed fix
This is my throw-over-the-wall completely untested proposed fix for PR24257. We end up ICEing when we try to emit an invalid SET insns where the SET_DEST is a REG and the SET_SRC is taken from a store to a MEM. When the SET_SRC of that store can't be assigned to a register, we should not consider the store movable. This happens for example with x86/AMD64 memory read-modify-write instructions, i.e. "MEM <- MEM op x". -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24257
