[Bug bootstrap/58532] New: bootstrap failure with BOOT_CFLAGS="-g -O3"

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58532

            Bug ID: 58532
           Summary: bootstrap failure with BOOT_CFLAGS="-g -O3"
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com

I just tried to bootstrap gcc 4.9 trunk dated
20130925 on an AMD Phenom with BOOT_CFLAGS="-g -O3".

It failed, but on checking the difference between
-O2 and -O3, I got the following setting
of BOOT_CFLAGS to bootstrap ok.

-g -O2 -ftree-partial-pre -fipa-cp-clone -fvect-cost-model -ftree-slp-vectorize
-ftree-loop-vectorize -fgcse-after-reload -funswitch-loops
-fpredictive-commoning

It looks to me like flag -ftree-loop-distribute-patterns breaks bootstrap.