The attached unreduced testcase from glibc generates an ICE using today's CVS.
The only necessary option is -O2.
regcomp.c: In function 'build_equiv_class':
regcomp.c:3462: error: Missing definition
for SSA_NAME: pretmp.2916_545 in statement:
D.26795_433 = (<unnamed type>) pretmp.2916_545;
regcomp.c:3462: internal compiler error: verify_ssa failed.
--
Summary: ICE caused by PRE dead instruction removal
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: drow at gcc dot gnu dot org
CC: dberlin at gcc dot gnu dot org,gcc-bugs at gcc dot gnu
dot org,pinskia at gcc dot gnu dot org,stevenb at suse
dot de
GCC target triplet: arm-none-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532
