https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97850
Bug ID: 97850
Summary: [11 Regression] aarch64: ICE in expand_insn, at
optabs.c:7467 since r11-1143-gb05d5563f
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
AArch64 ICEs on the following C++ testcase:
unsigned long a, d;
extern int b[];
char c;
void e(int f) {
for (int g = a; g; g += 20989) {
a = (c ? c : f) ? 2 / d : 0;
b[g] = 0;
}
}
since r11-1143-gb05d5563f4be13b4a0d0951375a82adf483973c0 with -O2
-ftree-vectorize -march=armv8.2-a+sve. The testcase is valid C, but the ICE
only occurs when compiled as C++.
To reproduce:
$ aarch64-elf-gcc -c -S test.cc -O2 -ftree-vectorize -march=armv8.2-a+sve
during RTL pass: expand
test.cc: In function 'void e(int)':
test.cc:6:21: internal compiler error: in expand_insn, at optabs.c:7467
6 | a = (c ? c : f) ? 2 / d : 0;
| ~~~~~~~~~~~~^~~~~~~~~~~
0xed4e84 expand_insn(insn_code, unsigned int, expand_operand*)
/home/alecop01/toolchain/src/gcc/gcc/optabs.c:7467
0xd4cf11 expand_direct_optab_fn
/home/alecop01/toolchain/src/gcc/gcc/internal-fn.c:3170
0xd4d95c expand_COND_DIV
/home/alecop01/toolchain/src/gcc/gcc/internal-fn.def:180
0xd4f208 expand_internal_call(internal_fn, gcall*)
/home/alecop01/toolchain/src/gcc/gcc/internal-fn.c:3862
0xd4f222 expand_internal_call(gcall*)
/home/alecop01/toolchain/src/gcc/gcc/internal-fn.c:3870
0xad7222 expand_call_stmt
/home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:2618
0xad7222 expand_gimple_stmt_1
/home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:3713
0xad7222 expand_gimple_stmt
/home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:3877
0xae12df expand_gimple_basic_block
/home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:5918
0xae2975 execute
/home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:6602
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
