http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55611
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> 2012-12-11 22:12:01 UTC --- Created attachment 28931 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28931 Use tree code to determine the canonical order In this patch, I remove the external calls to commutative_operand_precedence, and I compare GET_CODEs when the current function would say the arguments are equivalent. This passes bootstrap+testsuite except for one test: gfortran.dg/pr43229.f90 -O (internal compiler error) that I killed when it was 12GB. I also tried the reverse order (just swap x and y in the GET_CODE comparison). It got a crazy process during stage3 compiling tree-ssa-address.c (I killed it at 40GB). Before that, I had tried parts of the testsuite with a non-bootstrapped compiler, and it seemed to pass just fine.
