4e6a540024
The relative vtable ABI will use a struct rather than an array as the type of a vtable. LLVM only allows 32-bit integers as struct indices, so we need to use 32-bit integers to get addresses of address points. In order to keep the code simple, we might as well do that unconditionally. It's probably a reasonable implementation limit to support no more than 2 billion virtual functions per class. This change causes quite a bit of churn in the test suite, so I'm making it separately. Differential Revision: http://reviews.llvm.org/D18113 llvm-svn: 263469
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
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struct Field {
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Field();
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~Field();
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};
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struct Base {
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Base();
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~Base();
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};
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struct A : Base {
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A();
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~A();
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virtual void f();
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Field field;
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};
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// CHECK-LABEL: define void @_ZN1AC2Ev(%struct.A* %this) unnamed_addr
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// CHECK: call void @_ZN4BaseC2Ev(
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// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @_ZTV1A, i32 0, i32 2) to i32 (...)**)
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// CHECK: call void @_ZN5FieldC1Ev(
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// CHECK: ret void
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A::A() { }
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// CHECK-LABEL: define void @_ZN1AD2Ev(%struct.A* %this) unnamed_addr
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// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @_ZTV1A, i32 0, i32 2) to i32 (...)**)
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// CHECK: call void @_ZN5FieldD1Ev(
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// CHECK: call void @_ZN4BaseD2Ev(
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// CHECK: ret void
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A::~A() { }
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struct B : Base {
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virtual void f();
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Field field;
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};
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void f() { B b; }
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// CHECK-LABEL: define linkonce_odr void @_ZN1BC1Ev(%struct.B* %this) unnamed_addr
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// CHECK: call void @_ZN1BC2Ev(
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// CHECK-LABEL: define linkonce_odr void @_ZN1BD1Ev(%struct.B* %this) unnamed_addr
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// CHECK: call void @_ZN1BD2Ev(
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// CHECK-LABEL: define linkonce_odr void @_ZN1BC2Ev(%struct.B* %this) unnamed_addr
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// CHECK: call void @_ZN4BaseC2Ev(
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// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @_ZTV1B, i32 0, i32 2) to i32 (...)**)
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// CHECK: call void @_ZN5FieldC1Ev
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// CHECK: ret void
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// CHECK-LABEL: define linkonce_odr void @_ZN1BD2Ev(%struct.B* %this) unnamed_addr
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// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @_ZTV1B, i32 0, i32 2) to i32 (...)**)
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// CHECK: call void @_ZN5FieldD1Ev(
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// CHECK: call void @_ZN4BaseD2Ev(
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// CHECK: ret void
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