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[Bug tree-optimization/24670] New: VRP ICE in compare_name_with_value
- From: "sebastian dot pop at cri dot ensmp dot fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Nov 2005 11:00:28 -0000
- Subject: [Bug tree-optimization/24670] New: VRP ICE in compare_name_with_value
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
This ICE occured during a compile of libfloat with mainline.
Attached is a delta reduced test that produces the ICE when compiled with -O2.
softfloat/bits64/softfloat.c: In function ?float128_rem?:
softfloat/bits64/softfloat.c:4483: internal compiler error: in
compare_name_with_value, at tree-vrp.c:3064
__inline__ void
shift128Right (int count, long long int *z1Ptr)
{
long long int z1;
if (count == 0);
else if (count < 64);
else
z1 = (count < 64) ? count : 0;
*z1Ptr = z1;
}
float128_rem ()
{
signed int expDiff;
long long int aSig1;
long long int sigMean1;
if (-64 < expDiff)
shift128Right (-expDiff, &aSig1);
add128 (&sigMean1);
}
--
Summary: VRP ICE in compare_name_with_value
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: sebastian dot pop at cri dot ensmp dot fr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24670