search for: handle_int

...() { // eh_state = -1 try { // eh_state = 0 Outer outer; // eh_state = 1 try { // eh_state = 2 Inner inner; // eh_state = 3 do_inner_thing(); // eh_state = 2 (because we’re going to destruct inner here) } catch (int) { // eh_state = 4 handle_int(); } // eh_state = 0 (because we’re going to destruct outer here) } catch (float) { // eh_state = 5 handle_float(); } // eh_state = -1; keep_going(); } Basically, the EH state needs to change any time we enter a new scope or construct a new object that needs to be destructe...

I am working on adding support for C++ exception handling when compiling for a native Windows target (that is a target with "MSVC" specified as the environment). Because of differences between how the native Windows runtime handles exceptions and the Itanium-based model used by current LLVM exception handling code, I believe this will require some extensions to the LLVM IR, though

...ut later today. If we go this way, the inlining code will need to be taught to merge the landingpad of the inlined function, but I think that will be pretty easy. So, here it is: void test() { try { Outer outer; try { Inner inner; do_inner_thing(); } catch (int) { handle_int(); } } catch (float) { handle_float(); } keep_going(); } ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; Original ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; Function Attrs: uwtable define void @_Z4testv() #0 { entry: %outer = alloca %class.Outer, align 1 %inner = alloca %class.Inne...

...i8* null, void (i8*, i8*)* @dtor_outer, i32 2, i8* bitcast (i8** @_ZTIf to i8*), void (i8*, i8*)* @catch_float) indirectbr i8* %recover2, [label %try.cont], [label %try.cont19] } One issue is that I'm not sure how to catch a "float" exception thrown by handle_int(). I'll have to think about that. It's also not clear to me that we need to have the i32 selector in @llvm.eh.actions. We need a way to distinguish between catch-all (traditionally i8* null) and a cleanup. We could just use some other constant like 'i8* inttoptr (i32 1 to i8*)' and...