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[Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 24 Jun 2011 08:07:47 +0000
- Subject: [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
- Auto-submitted: auto-generated
- References: <bug-49518-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.06.24 08:07:13
CC| |jakub at gcc dot gnu.org
Component|c |tree-optimization
Target Milestone|--- |4.6.1
Summary|ICE in |[4.6/4.7 Regression] ICE in
|vect_enhance_data_refs_alig |vect_enhance_data_refs_alig
|nment, at |nment, at
|tree-vect-data-refs.c:1555 |tree-vect-data-refs.c:1555
Ever Confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-24 08:07:13 UTC ---
Simplified testcase:
int a, b;
struct S { unsigned int s, t, u; } c, d = { 0, 1, 0 };
void
test (unsigned char z)
{
char e[] = {0, 0, 0, 0, 1};
for (c.s = 1; c.s; c.s++)
{
b = e[c.s];
if (a)
break;
b = z >= c.u;
if (d.t)
break;
}
}
Started with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167184