http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48237
Summary: [4.6/4.7 Regression] ICE: in final_scan_insn, at
final.c:2651 with -fselective-scheduling2 -mtune=core2
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 23750
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23750
reduced testcase
Compiler output:
$ gcc -O -fcaller-saves -fschedule-insns2 -fselective-scheduling2 -mtune=core2
testcase.c
testcase.c: In function 'foo':
testcase.c:19:1: internal compiler error: in final_scan_insn, at final.c:2651
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The failing assert is:
#ifdef HAVE_ATTR_length
/* This instruction should have been split in shorten_branches,
to ensure that we would have valid length info for the
splitees. */
gcc_unreachable ();
#endif
Tested revisions:
r171265 - crash
4.6 r170955 - crash
4.5 r170955 - OK
