https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95133
Bug ID: 95133
Summary: [9/10/11 Regression] ICE in
gimple_redirect_edge_and_branch_force, at
tree-cfg.c:6075
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started with r8, needs option -O3 :
$ cat z1.c
extern int a[16];
void f (int *ip, int x)
{
int *xp = a;
for (int i=0; i<8; ++i)
{
base: if (x) return;
}
*xp++ = *ip;
goto *(&&base + *ip);
}
$ gcc-11-20200510 -c z1.c -O2
$ gcc-11-20200510 -c z1.c -O3
during GIMPLE pass: split-paths
z1.c: In function 'f':
z1.c:2:6: internal compiler error: in gimple_redirect_edge_and_branch_force, at
tree-cfg.c:6075
2 | void f (int *ip, int x)
| ^
0xd2de58 gimple_redirect_edge_and_branch_force
../../gcc/tree-cfg.c:6075
0x7d32a3 redirect_edge_and_branch_force(edge_def*, basic_block_def*)
../../gcc/cfghooks.c:490
0x7d509a duplicate_block(basic_block_def*, edge_def*, basic_block_def*,
copy_bb_data*)
../../gcc/cfghooks.c:1109
0xcddf05 transform_duplicate(basic_block_def*, basic_block_def*)
../../gcc/tracer.c:245
0x1697ae0 split_paths
../../gcc/gimple-ssa-split-paths.c:463
0x1697ae0 execute_split_paths
../../gcc/gimple-ssa-split-paths.c:503
0x1697ae0 execute
../../gcc/gimple-ssa-split-paths.c:540
