static void EmitCleanup(CodeGenFunction &CGF,
EHScopeStack::Cleanup *Fn,
EHScopeStack::Cleanup::Flags flags,
llvm::Value *ActiveFlag) {
// EH cleanups always occur within a terminate scope.
if (flags.isForEHCleanup()) CGF.EHStack.pushTerminate();
// If there's an active flag, load it and skip the cleanup if it's
// false.
llvm::BasicBlock *ContBB = nullptr;
if (ActiveFlag) {
ContBB = CGF.createBasicBlock("cleanup.done");
llvm::BasicBlock *CleanupBB = CGF.createBasicBlock("cleanup.action");
llvm::Value *IsActive
= CGF.Builder.CreateLoad(ActiveFlag, "cleanup.is_active");
CGF.Builder.CreateCondBr(IsActive, CleanupBB, ContBB);
CGF.EmitBlock(CleanupBB);
}
// Ask the cleanup to emit itself.
Fn->Emit(CGF, flags);
assert(CGF.HaveInsertPoint() && "cleanup ended with no insertion point?");
// Emit the continuation block if there was an active flag.
if (ActiveFlag)
CGF.EmitBlock(ContBB);
// Leave the terminate scope.
if (flags.isForEHCleanup()) CGF.EHStack.popTerminate();
}
static void EmitCleanup(CodeGenFunction &CGF,
EHScopeStack::Cleanup *Fn,
EHScopeStack::Cleanup::Flags flags,
llvm::Value *ActiveFlag) {
// Itanium EH cleanups occur within a terminate scope. Microsoft SEH doesn't
// have this behavior, and the Microsoft C++ runtime will call terminate for
// us if the cleanup throws.
bool PushedTerminate = false;
if (flags.isForEHCleanup() && !CGF.getTarget().getCXXABI().isMicrosoft()) {
CGF.EHStack.pushTerminate();
PushedTerminate = true;
}
// If there's an active flag, load it and skip the cleanup if it's
// false.
llvm::BasicBlock *ContBB = nullptr;
if (ActiveFlag) {
ContBB = CGF.createBasicBlock("cleanup.done");
llvm::BasicBlock *CleanupBB = CGF.createBasicBlock("cleanup.action");
llvm::Value *IsActive
= CGF.Builder.CreateLoad(ActiveFlag, "cleanup.is_active");
CGF.Builder.CreateCondBr(IsActive, CleanupBB, ContBB);
CGF.EmitBlock(CleanupBB);
}
// Ask the cleanup to emit itself.
Fn->Emit(CGF, flags);
assert(CGF.HaveInsertPoint() && "cleanup ended with no insertion point?");
// Emit the continuation block if there was an active flag.
if (ActiveFlag)
CGF.EmitBlock(ContBB);
// Leave the terminate scope.
if (PushedTerminate)
CGF.EHStack.popTerminate();
}
