[Bug debug/64817] [5 Regression] compilation hangs at -O3 with -g enabled on x86_64-linux-gnu

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64817

--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Feb  4 14:23:33 2015
New Revision: 220404

URL: https://gcc.gnu.org/viewcvs?rev=220404&root=gcc&view=rev
Log:
Avoid allocating memory when trying but failing to simplify XOR of AND.

for  gcc/ChangeLog

    PR debug/64817
    * simplify-rtx.c (simplify_binary_operation_1): Rewrite
    simplification of XOR of AND to not allocate new rtx before
    committing to a simplification.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c