[Bug middle-end/40460] [4.3/4.4/4.5 Regression] Enormous memory usage during compilation with -O2 or -O3 optimizations.
--- Comment #5 from rguenth at gcc dot gnu dot org 2009-06-16 14:36 --- Obviously a regression against pre-tree-ssa. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added Known to work||3.3.6 Summary|Enormous memory usage during|[4.3/4.4/4.5 Regression] |compilation with -O2 or -O3 |Enormous memory usage during |optimizations. |compilation with -O2 or -O3 ||optimizations. Target Milestone|--- |4.3.4 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40460
[Bug middle-end/40460] [4.3/4.4/4.5 Regression] Enormous memory usage during compilation with -O2 or -O3 optimizations.
--- Comment #6 from rguenth at gcc dot gnu dot org 2009-06-17 10:26 --- Subject: Bug 40460 Author: rguenth Date: Wed Jun 17 10:26:24 2009 New Revision: 148593 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=148593 Log: 2009-06-17 Richard Guenther PR middle-end/40460 * tree-chrec.h (build_polynomial_chrec): If we cannot determine if there is no evolution of left in the loop bail out. * tree-chrec.c (chrec_fold_multiply_poly_poly): CSE one chrec_fold_multiply. * g++.dg/torture/pr40460.C: New testcase. Added: trunk/gcc/testsuite/g++.dg/torture/pr40460.C Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-chrec.c trunk/gcc/tree-chrec.h -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40460