83 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -O0 %s -o - 2>&1 -std=c++11 | FileCheck %s2 3int gi;4 5namespace lambdas {6// CHECK-LABEL: define{{.*}} void @_ZN7lambdas7LambdasEPc7void Lambdas(char *ptr) {8 auto L1 = [](void *const p __attribute__((pass_object_size(0)))) {9 return __builtin_object_size(p, 0);10 };11 12 int i = 0;13 auto L2 = [&i](void *const p __attribute__((pass_object_size(0)))) {14 return __builtin_object_size(p, 0) + i;15 };16 17 // CHECK: @llvm.objectsize18 gi = L1(ptr);19 // CHECK: @llvm.objectsize20 gi = L2(ptr);21}22 23// CHECK-DAG: define internal noundef i64 @"_ZZN7lambdas7LambdasEPcENK3$_0clEPvU17pass_object_size0"24// CHECK-NOT: call noundef i64 @llvm.objectsize25// CHECK-DAG: define internal noundef i64 @"_ZZN7lambdas7LambdasEPcENK3$_1clEPvU17pass_object_size0"26// CHECK-NOT: call noundef i64 @llvm.objectsize27}28 29// This is here instead of in Sema/ because we need to check to make sure the30// proper function is called. If it's not, we'll end up with assertion errors.31namespace addrof {32void OvlFoo(void *const __attribute__((pass_object_size(0)))) {}33void OvlFoo(int *const) {}34 35// CHECK: define{{.*}} void @_ZN6addrof4TestEv36void Test() {37 // Treating parens-only calls as though they were direct is consistent with38 // how we handle other implicitly unaddressable functions (e.g. builtins).39 // CHECK: call void @_ZN6addrof6OvlFooEPvU17pass_object_size040 (OvlFoo)(nullptr);41 42 // CHECK: call void @_ZN6addrof6OvlFooEPi43 (&OvlFoo)(nullptr);44}45}46 47namespace delegate {48 struct A {49 A(void *const p __attribute__((pass_object_size(0))));50 };51 A::A(void *const p __attribute__((pass_object_size(0)))) {}52 // Ensure that we forward the size through a delegating constructor call.53 // CHECK: define{{.*}} void @_ZN8delegate1AC1EPvU17pass_object_size0({{[^,]*}}, ptr {{.*}}, i64{{[^,]*}})54 // CHECK: call void @_ZN8delegate1AC2EPvU17pass_object_size0({{[^,]*}}, ptr {{.*}}, i64{{[^,]*}})55}56 57namespace variadic {58// We had an issue where variadic member/operator calls with pass_object_size59// would cause crashes.60 61struct AsCtor {62 AsCtor(const char *const c __attribute__((pass_object_size(0))), double a,63 ...) {}64};65 66struct AsMember {67 void bar(const char *const c __attribute__((pass_object_size(0))), double a,68 ...) {}69 void operator()(const char *const c __attribute__((pass_object_size(0))),70 double a, ...) {}71};72 73// CHECK-LABEL: define{{.*}} void @_ZN8variadic4testEv()74void test() {75 // CHECK-RE: call{{[^@]+}}@_ZN8variadic6AsCtorC1EPKcU17pass_object_size0dz76 AsCtor("a", 1.0);77 // CHECK-RE: call{{[^@]+}}@_ZN8variadic8AsMember3barEPKcU17pass_object_size0dz78 AsMember{}.bar("a", 1.0);79 // CHECK-RE: call{{[^@]+}}@_ZN8variadic8AsMemberclEPKcU17pass_object_size0dz80 AsMember{}("a", 1.0);81}82}83