https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108383
Bug ID: 108383
Summary: g++ ICE with -O3 and -flto on simple function
Product: gcc
Version: 12.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eebssk1 at godaftwithebk dot pub
Target Milestone: ---
Getting ICE with O3&flto when compiling a project.
Using mingw32 cross compiler on linux.
project url: https://github.com/doitsujin/dxvk
x86_64-w64-mingw32-g++ -o src/dxgi/dxgi.dll src/dxgi/dxgi.dll.p/version.o
src/dxgi/dxgi.dll.p/dxgi_adapter.cpp.obj src/dxgi/dxgi.dll.p/dxgi_enums.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_factory.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_format.cpp.obj src/dxgi/dxgi.dll.p/dxgi_main.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_monitor.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_options.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_output.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_surface.cpp.obj
src/dxgi/dxgi.dll.p/dxgi_swapchain.cpp.obj -Wl,--allow-shlib-undefined -Wl,-O1
-shared ../src/dxgi/dxgi.def -Wl,--start-group
-Wl,--out-implib=src/dxgi/dxgi.dll.a -static -static-libgcc -static-libstdc++
-Wl,--file-alignment=4096 src/dxvk/libdxvk.a src/util/libutil.a
src/spirv/libspirv.a src/wsi/libwsi.a
subprojects/libdisplay-info/libdisplay-info.a src/vulkan/libvkcommon.a -pthread
-lm -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid
-lcomdlg32 -ladvapi32 -Wl,--end-group
lto-wrapper: warning: using serial compilation of 21 LTRANS jobs
lto-wrapper: note: see the ‘-flto’ option documentation for more information
during GIMPLE pass: alias
../src/dxgi/dxgi_adapter.cpp: In member function
‘RegisterVideoMemoryBudgetChangeNotificationEvent’:
../src/dxgi/dxgi_adapter.cpp:402:61: internal compiler error: in
binds_to_current_def_p, at symtab.cc:2494
402 | HRESULT STDMETHODCALLTYPE
DxgiAdapter::RegisterVideoMemoryBudgetChangeNotificationEvent(
| ^
0x62d5fd symtab_node::binds_to_current_def_p(symtab_node*)
../../gcc/symtab.cc:2494
0x84ddd7 gimple_call_arg_flags(gcall const*, unsigned int)
../../gcc/gimple.cc:1583
0xce9a84 handle_rhs_call
../../gcc/tree-ssa-structalias.cc:4335
0xcebe1a find_func_aliases_for_call
../../gcc/tree-ssa-structalias.cc:5010
0xcebe1a find_func_aliases
../../gcc/tree-ssa-structalias.cc:5113
0xcee3c6 compute_points_to_sets
../../gcc/tree-ssa-structalias.cc:7536
0xcee3c6 compute_may_aliases()
../../gcc/tree-ssa-structalias.cc:8044
0xa4ff5c execute_function_todo
../../gcc/passes.cc:2057
0xa50c9c do_per_function
../../gcc/passes.cc:1688
0xa50c9c execute_todo
../../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.
lto-wrapper: fatal error: x86_64-w64-mingw32-g++ returned 1 exit status
compilation terminated.
and then
../src/dxgi/dxgi_adapter.cpp: In member function
‘RegisterVideoMemoryBudgetChangeNotificationEvent’:
../src/dxgi/dxgi_adapter.cpp:402:71: internal compiler error: in
binds_to_current_def_p, at symtab.cc:2494
402 | HRESULT STDMETHODCALLTYPE __attribute__((optimize("no-tree-pta")))
DxgiAdapter::RegisterVideoMemoryBudgetChangeNotificationEvent(
| ^
0x62d5fd symtab_node::binds_to_current_def_p(symtab_node*)
../../gcc/symtab.cc:2494
0x912baf merge_call_side_effects
../../gcc/ipa-modref.cc:1310
0x913671 analyze_call
../../gcc/ipa-modref.cc:1678
0x913671 analyze_stmt
../../gcc/ipa-modref.cc:1811
0x91a19a analyze
../../gcc/ipa-modref.cc:1900
0x91a19a analyze_function
../../gcc/ipa-modref.cc:3219
0x91c5da execute
../../gcc/ipa-modref.cc:4186
and then
with __attribute__((optimize("no-tree-pta","no-ipa-modref")))
the code unit compiled without ICE.
The optimizations are in O1, however if i simply use
__attribute__((optimize(2))),then the code unit does compile too, which is
really weired.
There's similar(may be same?) issues in here:
https://github.com/msys2/MINGW-packages/issues/11726 , ICE in same gcc code
location (symtab.cc:2494), with different flags though.
