https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120666
Bug ID: 120666
Summary: ICE when building with fast-math, O3 and LTO
Product: gcc
Version: 14.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: eebssk1 at godaftwithebk dot pub
Target Milestone: ---
when building ffmpeg with fast-math,O3(default for release) and LTO,gcc ICE
occurred.
Note that ffmpeg disables tree-vectorize by default due to a bug in earlier
version of gcc.
The error:
src/libavcodec/hcadec.c:332:42: warning: writing 4 bytes into a region of size
0 [-Wstringop-overflow=]
332 | x[0] = 1; x[1] = 2; x[4] = 1; x[5] =
2; x[6] = 1; x[7] = 2; | ^
src/libavcodec/hcadec.c:213:12: note: at
offset [180, 2036] into destination object ‘r’ of size 16
213 | int8_t r[16]
= { 0 }; |
^
src/libavcodec/hcadec.c:213:12: note: at offset [52, 116] into destination
object ‘r’ of size 16
src/libavcodec/hcadec.c:213:12: note: at offset [180,
2036] into destination object ‘r’ of size 16
during GIMPLE pass: slp
src/libavcodec/evrcdec.c: In
function ‘decode_predictor_coeffs’:
src/libavcodec/evrcdec.c:348:13: internal compiler error: in
vectorizable_simd_clone_call, at tree-vect-stmts.cc:3999
348 | static void
decode_predictor_coeffs(const float *ilspf, float *ilpc) |
^
0x25b2a3e internal_error(char const*, ...)
???:0
0x6b27fe fancy_abort(char const*, int, char const*)
???:0
0x2459737 vect_analyze_stmt(vec_info*,
_stmt_vec_info*, bool*, _slp_tree*, _slp_instance*, vec<stmt_info_for_cost,
va_heap, vl_ptr>*)
0x2459737 vect_analyze_stmt(vec_info*, _stmt_vec_info*, bool*, _slp_tr17:43:19
[14/2636]*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
???:0
0x12dfcc4 vect_slp_analyze_operations(vec_info*)
???:0
0x12e51f2 vect_slp_function(function*)
???:0
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.
make[1]: *** [/tmp/ccOt8L8X.mk:116：/tmp/ccjn6yRO.ltrans38.ltrans.o
