https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95308
Bug ID: 95308
Summary: ICE: in maybe_canonicalize_mem_ref_addr with -O3
-march=skylake-avx512
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vsevolod.livinskij at frtk dot ru
Target Milestone: ---
Error:
>$ g++ -O3 -march=skylake-avx512 -c func.cpp
during GIMPLE pass: forwprop
func.cpp: In function ‘void i(char, long int (*)[100][100][100])’:
func.cpp:5:6: internal compiler error: in maybe_canonicalize_mem_ref_addr, at
gimple-fold.c:4912
5 | void i(char f, long g[][100][100][100]) {
| ^
0x76db2a maybe_canonicalize_mem_ref_addr
gcc_src/gcc/gimple-fold.c:4912
0xdfdd97 fold_stmt_1
gcc_src/gcc/gimple-fold.c:5014
0x1226b41 execute
gcc_src/gcc/tree-ssa-forwprop.c:3095
Reproducer:
extern int a[][18];
extern short b[], c[];
extern char d[][18];
int e;
void i(char f, long g[][100][100][100]) {
for (int h = 0;; h += 2)
for (char j = 0; j < 17; j++) {
if (e ? f : 0) {
a[h][j] = 5;
for (int k = 0; k < 12; k += 4)
for (short l = 0; l < 015; l += 2)
b[k * 3 + l] = bool(g[2][j][k][l]);
} else
d[h][j] = 0;
c[j] = 3;
}
}
GCC version:
11.0.0 (a57aa11191617754c8d43b3eb6a2576e970a0668)
