[Bug bootstrap/58532] New: bootstrap failure with BOOT_CFLAGS="-g -O3"
dcb314 at hotmail dot com
gcc-bugzilla@gcc.gnu.org
Wed Sep 25 19:34:00 GMT 2013
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.
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