[Bug tree-optimization/26524] [4.1 Regression] ICE when compiling with -ffast-math and -O3 clatm5.f (lapack)

[janis at gcc dot gnu dot org]

------- Comment #5 from janis at gcc dot gnu dot org  2006-03-02 00:26 -------
Andrew wondered aloud on IRC when this was fixed on mainline, so I'm running a
regression hunt for that (between 20051130 and 20051128) and also for when it
broke on mainline (between 20050730 and 20050828).  If all goes well I'll
report the results in the morning.  The hunts are on powerpc-linux using the
minimized testcase from comment #4.

A 4.1 compiler with checking enabled provides more information for that
testcase:

elm3b11% /opt/gcc-nightly/4.1/bin/gfortran -O3 -ffast-math -c 26524.f
26524.f: In function ‘clatm5’:
26524.f:1: internal compiler error: tree check: expected complex_cst, have
integer_cst in const_binop, at fold-const.c:1575
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26524