http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50091
Bug #: 50091
Summary: [4.5/4.6/4.7 Regression] -fstack-check gives bad
assembly on powerpc-apple-darwin9
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: domi...@lps.ens.fr
CC: ia...@gcc.gnu.org, s...@gcc.gnu.org
Host: powerpc-apple-darwin9
Target: powerpc-apple-darwin9
Build: powerpc-apple-darwin9
On powerpc-apple-darwin9 I get
FAIL: gcc.dg/graphite/run-id-pr47653.c (test for excess errors)
The error is
[karma] f90/bug% gcc47 -O -fstack-check=generic -ftree-pre -fgraphite-identity
/opt/gcc/work/gcc/testsuite/gcc.dg/graphite/run-id-pr47653.c
/var/tmp//ccQC61mg.s:12:Parameter syntax error (parameter 1)
/var/tmp//ccQC61mg.s:13:Parameter syntax error (parameter 1)
The syntax error comming from "stw 0,..." in
...
stw 0,-12284(r1)
mr r0,r1
stw 0,-12556(r1)
...
It turns out that -fstack-check=generic (or -fstack-check) is enough to trigger
the error for gcc 4.5.3, 4.6.1, and trunk, but not for 4.4.6. I have tested
some C files and this seems quite generic although
gcc/testsuite/gcc.dg/pr48134.c assembles with -O or -O1, but not with -O2.
QUESTION for graphite: is -fstack-check=generic really necessary for
gcc.dg/graphite/run-id-pr47653.c?
