https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82819
Bug ID: 82819
Summary: [8 Regression] [graphite] ICE in set_codegen_error, at
graphite-isl-ast-to-gimple.c:206
Product: gcc
Version: 8.0
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: powerpc-*-linux-gnu*, powerpcspe-*-linux-gnu*
gcc-8.0.0-alpha20171029 snapshot (r254205) ICEs when compiling the following
snippet w/ -O2 (-O3, -Ofast) -floop-nest-optimize for 32-bit BE powerpc target:
short int *ts;
void
c2 (unsigned long long int s4, int ns)
{
short int *b2 = (short int *)&ns;
while (ns != 0)
{
int xn;
for (xn = 0; xn < 3; ++xn)
for (*b2 = 0; *b2 < 2; ++*b2)
s4 += xn;
if (s4 != 0)
b2 = ts;
++ns;
}
}
% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20171029 -O2 -floop-nest-optimize -c
culmj2ad.c
during GIMPLE pass: graphite
culmj2ad.c: In function 'c2':
culmj2ad.c:4:1: internal compiler error: in set_codegen_error, at
graphite-isl-ast-to-gimple.c:206
c2 (unsigned long long int s4, int ns)
^~
0x5bb486 translate_isl_ast_to_gimple::set_codegen_error()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:205
0x13c02b5 translate_isl_ast_to_gimple::set_codegen_error()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:311
0x13c02b5
translate_isl_ast_to_gimple::gcc_expression_from_isl_expr_int(tree_node*,
isl_ast_expr*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:308
0x13c04b4 translate_isl_ast_to_gimple::binary_op_to_tree(tree_node*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:338
0x13c04b4 translate_isl_ast_to_gimple::binary_op_to_tree(tree_node*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:338
0x13c047e translate_isl_ast_to_gimple::binary_op_to_tree(tree_node*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:322
0x13c1123 translate_isl_ast_to_gimple::graphite_create_new_guard(edge_def*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:845
0x13c3c95 translate_isl_ast_to_gimple::translate_isl_ast_node_if(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:864
0x13c3bc5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:831
0x13c40af graphite_regenerate_ast_isl(scop*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite-isl-ast-to-gimple.c:1474
0x13be11d graphite_transform_loops()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite.c:384
0x13bf8af graphite_transforms
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite.c:447
0x13bf8af execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20171029/work/gcc-8-20171029/gcc/graphite.c:524
I doubt it's target-specific, though.
