https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102226
Bug ID: 102226
Summary: ICE with -O3 -msve-vector-bits=128
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gilles.gouaillardet at gmail dot com
Target Milestone: ---
Created attachment 51419
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51419&action=edit
A quite simple reproducer
The attached reproducer crashes the latest LATEST-12 compilers when invoked
with
$ g++ -march=armv8.2-a+sve -c -msve-vector-bits=128 -O3 test.cpp
test.cpp: In function 'int
findPropertyIndex(std::vector<std::__cxx11::basic_string<char> >, const
std::string&)':
test.cpp:36:5: error: incompatible types in 'PHI' argument 1
36 | int findPropertyIndex(std::vector<std::string> ap,
| ^~~~~~~~~~~~~~~~~
vector(2) long unsigned int
vector(2) long unsigned int
_142 = PHI <vect__72.97_141(43), vect__32.85_117(37)>
during GIMPLE pass: vect
test.cpp:36:5: internal compiler error: verify_gimple failed
0x10b48a3 verify_gimple_in_cfg(function*, bool)
../.././gcc/tree-cfg.c:5531
0xf71baf execute_function_todo
../.././gcc/passes.c:2042
0xf72643 execute_todo
../.././gcc/passes.c:2096
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.
The compiler does not crash when invoked with the following options (on top of
-march=armv8.2-a+sve :
-O2 -msve-vector-bits=128
-O3 -msve-vector-bits=256
-O3 -msve-vector-bits=512
-O3
FWIW, snapshot gcc-12-20210711 did not crash, and crash started from
gcc-12-20210718, and the 10 and 11 branches are unaffected by this issue.
