https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92429
Bug ID: 92429
Summary: [10 Regression] ICE in vect_transform_stmt, at
tree-vect-stmts.c:10918
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: x86_64-unknown-linux-gnu
gcc-10.0.0-alpha20191103 snapshot (r277758) ICEs when compiling the following
testcase reduced from gcc/testsuite/gcc.dg/graphite/block-6.c w/ -mavx2 -O1
-ftree-loop-vectorize -fno-tree-fre:
void
as (int *gl, int k1)
{
while (k1 < 1)
{
gl[k1] = gl[k1] * gl[k1] / 2;
++k1;
}
}
% x86_64-unknown-linux-gnu-gcc-10.0.0-alpha20191103 -mavx2 -O1
-ftree-loop-vectorize -fno-tree-fre -c whpzikcj.c
during GIMPLE pass: vect
whpzikcj.c: In function 'as':
whpzikcj.c:2:1: internal compiler error: in vect_transform_stmt, at
tree-vect-stmts.c:10918
2 | as (int *gl, int k1)
| ^~
0x6ba665 vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*,
_slp_tree*, _slp_instance*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-stmts.c:10918
0xe81269 vect_transform_loop_stmt
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-loop.c:8008
0xe9534d vect_transform_loop(_loop_vec_info*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-loop.c:8402
0xeadae0 try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vectorizer.c:990
0xeadd2b try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vectorizer.c:1027
0xeae6ed vectorize_loops()
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vectorizer.c:1127
