http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46178
Summary: gcc.target/i386/(u)divmod-[58].c FAIL: ICE: in
dec_register_pressure, at ira-lives.c:215 with
-fira-algorithm=priority
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Compiler output:
$ gcc gcc.target/i386/divmod-5.c -O -m8bit-idiv -fira-algorithm=priority
gcc.target/i386/divmod-5.c: In function 'bar':
gcc.target/i386/divmod-5.c:10:1: internal compiler error: in
dec_register_pressure, at ira-lives.c:215
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc gcc.target/i386/divmod-8.c -O -m8bit-idiv -fira-algorithm=priority
gcc.target/i386/divmod-8.c: In function 'bar':
gcc.target/i386/divmod-8.c:12:1: internal compiler error: in
dec_register_pressure, at ira-lives.c:215
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
I think I have seen this ICE often with -fira-algorithm=priority
-fschedule-insns, but I didn't report it. This is the only case I found where
-fira-algorithm=priority fails without -fschedule-insns.
Tested revisions:
r165915 - crash
r165699 - crash
