1*548ecde4SStephen Tozer // RUN: %clang_cc1 %s -triple %itanium_abi_triple -emit-llvm -fextend-variable-liveness -fcxx-exceptions -fexceptions -o - | FileCheck %s 24424c44cSWolfgang Pieb // This test checks that the fake uses can be generated in exception handling 34424c44cSWolfgang Pieb // blocks and that we can emit fake uses for the __int128 data type. 44424c44cSWolfgang Pieb 54424c44cSWolfgang Pieb extern int bar(); 64424c44cSWolfgang Pieb 74424c44cSWolfgang Pieb /// Try block: fake use ends at try-block scope. 84424c44cSWolfgang Pieb // [[BAR_VAL::%[a-zA-Z0-9\.]+]] = invoke{{.*}} i32 @_Z3barv() 94424c44cSWolfgang Pieb // store i32 %[[BAR_VAL]], ptr [[K_ALLOC_VAL:%[a-zA-Z0-9\.]+]], align 4 104424c44cSWolfgang Pieb // [[K_FAKE_USE:%[a-zA-Z0-9\.]+]] = load i32, ptr [[K_ALLOC_VAL]], align 4 114424c44cSWolfgang Pieb // call void (...) @llvm.fake.use(i32 [[K_FAKE_USE]]) #2 124424c44cSWolfgang Pieb // br label 134424c44cSWolfgang Pieb 144424c44cSWolfgang Pieb /// Catch block: fetching the caught value... 154424c44cSWolfgang Pieb // CHECK: [[CATCH_PTR:%[a-zA-Z0-9\.]+]] = call ptr @__cxa_begin_catch( 164424c44cSWolfgang Pieb // CHECK: [[L_VAL:%[a-zA-Z0-9\.]+]] = load i32, ptr [[CATCH_PTR]], align 4 174424c44cSWolfgang Pieb 184424c44cSWolfgang Pieb /// Storing to allocas... 194424c44cSWolfgang Pieb // CHECK-DAG: store i32 8, ptr [[M_ALLOC_VAL:%[a-zA-Z0-9\.]+]] 204424c44cSWolfgang Pieb // CHECK-DAG: store i32 [[L_VAL]], ptr [[L_ALLOC_VAL:%[a-zA-Z0-9\.]+]], align 4 214424c44cSWolfgang Pieb 224424c44cSWolfgang Pieb /// Load into fake uses - expect M to precede L. 234424c44cSWolfgang Pieb // CHECK: [[M_FAKE_VAL:%[a-zA-Z0-9\.]+]] = load i32, ptr [[M_ALLOC_VAL]] 244424c44cSWolfgang Pieb // CHECK: call void (...) @llvm.fake.use(i32 [[M_FAKE_VAL]]) 254424c44cSWolfgang Pieb // CHECK: [[L_FAKE_VAL:%[a-zA-Z0-9\.]+]] = load i32, ptr [[L_ALLOC_VAL]] 264424c44cSWolfgang Pieb // CHECK: call void (...) @llvm.fake.use(i32 [[L_FAKE_VAL]]) 274424c44cSWolfgang Pieb void foo() { 284424c44cSWolfgang Pieb try { 294424c44cSWolfgang Pieb int k = bar(); 304424c44cSWolfgang Pieb } catch (int l) { 314424c44cSWolfgang Pieb /// The catch block contains a fake use for the local within its scope. 324424c44cSWolfgang Pieb int m = 8; 334424c44cSWolfgang Pieb } 344424c44cSWolfgang Pieb } 35