https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77937
Bug ID: 77937
Summary: [7 Regression] ICE: in replace_one_candidate, at
gimple-ssa-strength-reduction.c:3370
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
Target Milestone: ---
markus@x4 ffmpeg % cat diracdsp.i
int *a;
int b, c, d;
void fn1(char *p1, int p2) {
int x;
while (1) {
x = 0;
for (; x < 8; x++)
p1[0] = -a[0] * d + p1[0] * c + 1 >> b >> 1;
p1 += p2;
}
}
markus@x4 ffmpeg % gcc -c -O3 -march=amdfam10 diracdsp.i
diracdsp.i: In function ‘fn1’:
diracdsp.i:3:6: internal compiler error: in replace_one_candidate, at
gimple-ssa-strength-reduction.c:3370
void fn1(char *p1, int p2) {
^~~
0x1269fe9 replace_one_candidate
../../gcc/gcc/gimple-ssa-strength-reduction.c:3370
0x126db67 replace_profitable_candidates
../../gcc/gcc/gimple-ssa-strength-reduction.c:3481
0x126dadb replace_profitable_candidates
../../gcc/gcc/gimple-ssa-strength-reduction.c:3490
0x1271fc6 analyze_candidates_and_replace
../../gcc/gcc/gimple-ssa-strength-reduction.c:3569
0x1271fc6 execute
../../gcc/gcc/gimple-ssa-strength-reduction.c:3643
