13a39c6f54
don't explode if the offset we get is zero. This can happen if you have an empty virtual base class. While I'm at it, remove an unnecessary block from the IR-generation of the null-check, mark the eventual GEP as inbounds, and generally prettify. llvm-svn: 161100
112 lines
2.3 KiB
C++
112 lines
2.3 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
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struct Spacer { int x; };
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struct A { double array[2]; };
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struct B : Spacer, A { };
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B &getB();
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// CHECK: define %struct.A* @_Z4getAv()
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// CHECK: call %struct.B* @_Z4getBv()
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// CHECK-NEXT: bitcast %struct.B*
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// CHECK-NEXT: getelementptr inbounds i8*
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// CHECK-NEXT: bitcast i8* {{.*}} to %struct.A*
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// CHECK-NEXT: ret %struct.A*
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A &&getA() { return static_cast<A&&>(getB()); }
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int &getIntLValue();
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int &&getIntXValue();
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int getIntPRValue();
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// CHECK: define i32* @_Z2f0v()
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// CHECK: call i32* @_Z12getIntLValuev()
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// CHECK-NEXT: ret i32*
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int &&f0() { return static_cast<int&&>(getIntLValue()); }
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// CHECK: define i32* @_Z2f1v()
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// CHECK: call i32* @_Z12getIntXValuev()
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// CHECK-NEXT: ret i32*
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int &&f1() { return static_cast<int&&>(getIntXValue()); }
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// CHECK: define i32* @_Z2f2v
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// CHECK: call i32 @_Z13getIntPRValuev()
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// CHECK-NEXT: store i32 {{.*}}, i32*
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// CHECK-NEXT: ret i32*
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int &&f2() { return static_cast<int&&>(getIntPRValue()); }
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bool ok;
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class C
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{
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int* state_;
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C(const C&) = delete;
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C& operator=(const C&) = delete;
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public:
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C(int state) : state_(new int(state)) { }
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C(C&& a) {
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state_ = a.state_;
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a.state_ = 0;
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}
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~C() {
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delete state_;
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state_ = 0;
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}
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};
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C test();
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// CHECK: define void @_Z15elide_copy_initv
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void elide_copy_init() {
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ok = false;
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// CHECK: call void @_Z4testv
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C a = test();
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// CHECK-NEXT: call void @_ZN1CD1Ev
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// CHECK-NEXT: ret void
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}
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// CHECK: define void @_Z16test_move_returnv
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C test_move_return() {
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// CHECK: call void @_ZN1CC1Ei
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C a1(3);
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// CHECK: call void @_ZN1CC1Ei
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C a2(4);
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if (ok)
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// CHECK: call void @_ZN1CC1EOS_
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return a1;
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// CHECK: call void @_ZN1CC1EOS_
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return a2;
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// CHECK: call void @_ZN1CD1Ev
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// CHECK: call void @_ZN1CD1Ev
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//CHECK: ret void
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}
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// PR10800: don't crash
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namespace test1 {
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int &&move(int&);
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struct A { A(int); };
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struct B {
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A a;
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B(int i);
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};
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// CHECK: define void @_ZN5test11BC2Ei(
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// CHECK: [[T0:%.*]] = call i32* @_ZN5test14moveERi(
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// CHECK-NEXT: [[T1:%.*]] = load i32* [[T0]]
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// CHECK-NEXT: call void @_ZN5test11AC1Ei({{.*}}, i32 [[T1]])
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// CHECK-NEXT: ret void
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B::B(int i) : a(move(i)) {}
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}
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// PR11009
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struct MoveConvertible {
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operator int&& () const;
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};
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void moveConstruct() {
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(void)(int)MoveConvertible();
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}
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