build of https://github.com/dolphin-emu/dolphin with standard flags succeeds build with LTO and -Ofastsucceed too However on a Sandybridge cpu, attempt to build with march=native fails with : internal compiler error: in vect_get_vec_def_for_operand, at tree-vect-stmts.c:1449 This error was reported to dolphin team here : https://code.google.com/p/dolphin-emu/issues/detail?id=7552 end of build log : [ 94%] Building CXX object Source/Core/Core/CMakeFiles/core.dir/HW/WiimoteReal/IODummy.cpp.o Linking CXX static library libcore.a [ 94%] Built target core [ 94%] [ 94%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/ARCodeAddEdit.cpp.o [ 94%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/AboutDolphin.cpp.o Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/CheatsWindow.cpp.o [ 94%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/ConfigMain.cpp.o [ 94%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/BreakpointDlg.cpp.o [ 94%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/BreakpointView.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/BreakpointWindow.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/CodeView.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/CodeWindow.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/CodeWindowFunctions.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/DSPDebugWindow.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/DSPRegisterView.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/DebuggerPanel.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/DebuggerUIUtil.cpp.o [ 95%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/JitWindow.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/MemoryCheckDlg.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/MemoryView.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/MemoryWindow.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/RegisterView.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/RegisterWindow.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/FifoPlayerDlg.cpp.o [ 96%] Building CXX object Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Frame.cpp.o /home/sheepdestroyer/Downloads/dolphin-master/Source/Core/DolphinWX/Debugger/RegisterView.cpp: In member function ‘virtual void CRegisterView::Update()’: /home/sheepdestroyer/Downloads/dolphin-master/Source/Core/DolphinWX/Debugger/RegisterView.cpp:186:6: internal compiler error: in vect_get_vec_def_for_operand, at tree-vect-stmts.c:1449 void CRegisterView::Update() ^ Please submit a full bug report, with preprocessed source if appropriate. See <http://bugzilla.redhat.com/bugzilla> for instructions. Preprocessed source stored into /tmp/ccOGSyuS.out file, please attach this to your bugreport. Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/build.make:468: recipe for target 'Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/RegisterView.cpp.o' failed make[2]: *** [Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/Debugger/RegisterView.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... CMakeFiles/Makefile2:882: recipe for target 'Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/all' failed make[1]: *** [Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/all] Error 2 Makefile:147: recipe for target 'all' failed make: *** [all] Error 2
Created attachment 924959 [details] Preprocessed source Preprocessed source attached to the report
this error only happens when building gui, building no-gui with -march=native succeeds. Would like to try with shared wxwidget but I am blocked by bug 1124402 : https://bugzilla.redhat.com/show_bug.cgi?id=1124402
Hmm I believe this is not a GCC issue but a dolphin issue. Contact them as well because they can be helpful as well.
did that yesterday, was closed with invalid : https://code.google.com/p/dolphin-emu/issues/detail?id=7552
for reference, I am using rawhide's gcc 4.9.1
Hmmm I didn't see that internal compiler bug line... That's curious. Hopefully the GCC maintained can help
Last update to gcc in rawhide fixed this problem for me