clang/test/CodeGenCXX/microsoft-abi-try-throw.cpp

   1 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 -mconstructor-aliases -fcxx-exceptions -fexceptions -fno-rtti -DTRY   | FileCheck %s -check-prefix=TRY
   2 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 -mconstructor-aliases -fcxx-exceptions -fexceptions -fno-rtti -DTHROW | FileCheck %s -check-prefix=THROW
   3
   4 // THROW-DAG: @"??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat
   5 // THROW-DAG: @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, ptr @"??_R0H@8", i32 0, i32 -1, i32 0, i32 4, ptr null }, section ".xdata", comdat
   6 // THROW-DAG: @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x ptr] [ptr @"_CT??_R0H@84"] }, section ".xdata", comdat
   7 // THROW-DAG: @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, ptr null, ptr null, ptr @_CTA1H }, section ".xdata", comdat
   8
   9 void external();
  10
  11 inline void not_emitted() {
  12   throw int(13); // no error
  13 }
  14
  15 int main() {
  16   int rv = 0;
  17 #ifdef TRY
  18   try {
  19     external(); // TRY: invoke void @"?external@@YAXXZ"
  20   } catch (int) {
  21     rv = 1;
  22     // TRY: catchpad within {{.*}} [ptr @"??_R0H@8", i32 0, ptr null]
  23     // TRY: catchret
  24   }
  25 #endif
  26 #ifdef THROW
  27   // THROW: store i32 42, ptr %[[mem_for_throw:.*]], align 4
  28   // THROW: call void @_CxxThrowException(ptr %[[mem_for_throw]], ptr @_TI1H)
  29   throw int(42);
  30 #endif
  31   return rv;
  32 }
  33
  34 #ifdef TRY
  35 // TRY-LABEL: define dso_local void @"?qual_catch@@YAXXZ"
  36 void qual_catch() {
  37   try {
  38     external();
  39   } catch (const int *) {
  40   }
  41   // TRY: catchpad within {{.*}} [ptr @"??_R0PAH@8", i32 1, ptr null]
  42   // TRY: catchret
  43 }
  44 #endif