https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105173
Bug ID: 105173
Summary: [10/11/12 Regression] ICE: during GIMPLE pass:
reassoc: verify_ssa failed (definition in block 2
follows the use) at -Ofast with decimals
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Created attachment 52758
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52758&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -Ofast testcase.c
testcase.c: In function 'foo':
testcase.c:4:1: error: definition in block 2 follows the use
4 | foo(char c, _Decimal32 d) {
| ^~~
for SSA_NAME: _12 in statement:
_14 = _12 * -1.0e+0;
during GIMPLE pass: reassoc
testcase.c:4:1: internal compiler error: verify_ssa failed
0x15cee2b verify_ssa(bool, bool)
/repo/gcc-trunk/gcc/tree-ssa.cc:1211
0x1286b7d execute_function_todo
/repo/gcc-trunk/gcc/passes.cc:2092
0x1286fae execute_todo
/repo/gcc-trunk/gcc/passes.cc:2139
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-7994-20220405095446-ge68f5c90bae-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r12-7994-20220405095446-ge68f5c90bae-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220405 (experimental) (GCC)
