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[Bug tree-optimization/52891] [4.8 Regression] ICE in adjust_bool_pattern
- From: "regehr at cs dot utah.edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 10 Apr 2012 14:08:41 +0000
- Subject: [Bug tree-optimization/52891] [4.8 Regression] ICE in adjust_bool_pattern
- Auto-submitted: auto-generated
- References: <bug-52891-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52891
John Regehr <regehr at cs dot utah.edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |regehr at cs dot utah.edu
--- Comment #2 from John Regehr <regehr at cs dot utah.edu> 2012-04-10 14:08:41 UTC ---
Another small testcase, if that's helpful.
[regehr@dyson r18]$ cat small.c
#pragma pack(1)
struct S2
{
unsigned f0:22;
};
struct
{
struct S2 f0;
} c;
int a, b, d;
void
fn1 ()
{
if (1 ? (!c.f0.f0 & d < 0) < a : 0)
b = 0;
}
[regehr@dyson r18]$ current-gcc -O3 -c small.c
small.c: In function 'fn1':
small.c:12:1: internal compiler error: in adjust_bool_pattern, at
tree-vect-patterns.c:2301
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[regehr@dyson r18]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r186257-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r186257-install
--program-prefix=r186257- --enable-languages=c,c++
Thread model: posix
gcc version 4.8.0 20120410 (experimental) (GCC)