a2347baaec
Because references must be initialized using some evaluated expression, they must point to something, and a callee can assume the reference parameter is dereferenceable. Taking advantage of a new attribute just added to LLVM, mark them as such. Because dereferenceability in addrspace(0) implies nonnull in the backend, we don't need both attributes. However, we need to know the size of the object to use the dereferenceable attribute, so for incomplete types we still emit only nonnull. llvm-svn: 213386
74 lines
1.4 KiB
Plaintext
74 lines
1.4 KiB
Plaintext
// RUN: %clang_cc1 -fobjc-gc -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o - %s | FileCheck %s
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struct A {
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A();
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A(const A&);
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A(A&);
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~A();
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};
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struct B {
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B();
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B(B&);
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};
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struct C {
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C() {}
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C(C& other, A a = A());
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int i, j;
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};
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struct POD {
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id myobjc;
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int array[3][4];
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};
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struct D : A, B, virtual C {
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D();
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int scalar;
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int scalar_array[2][3];
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B class_member;
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C class_member_array[2][3];
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POD pod_array[2][3];
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union {
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int x;
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float f[3];
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};
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};
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void f(D d) {
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D d2(d);
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}
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// CHECK-LABEL: define linkonce_odr void @_ZN1DC1ERS_(%struct.D* %this, %struct.D* dereferenceable({{[0-9]+}})) unnamed_addr
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// CHECK: call void @_ZN1AC1Ev
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// CHECK: call void @_ZN1CC2ERS_1A
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// CHECK: call void @_ZN1AD1Ev
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// CHECK: call void @_ZN1AC2ERS_
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// CHECK: call void @_ZN1BC2ERS_
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// CHECK: {{call void @llvm.memcpy.p0i8.p0i8.i64.*i64 24}}
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// CHECK: call void @_ZN1BC1ERS_
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// CHECK: br
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// CHECK: {{icmp ult.*, 2}}
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// CHECK: {{icmp ult.*, 3}}
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// CHECK: call void @_ZN1AC1Ev
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// CHECK: call void @_ZN1CC1ERS_1A
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// CHECK: call void @_ZN1AD1Ev
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// CHECK: {{call.*@objc_memmove_collectable}}
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// CHECK: {{call void @llvm.memcpy.p0i8.p0i8.i64.*i64 12}}
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// CHECK: ret void
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template<class T> struct X0 { void f0(T * ) { } };
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template <class > struct X1 { X1( X1& , int = 0 ) { } };
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struct X2 { X1<int> result; };
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void test_X2()
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{
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typedef X2 impl;
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typedef X0<impl> pimpl;
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impl* i;
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pimpl pdata;
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pdata.f0( new impl(*i));
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}
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