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
28 lines
1.1 KiB
C++
28 lines
1.1 KiB
C++
// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 -emit-llvm -o - %s | FileCheck %s
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union PR23373 {
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PR23373(PR23373&) = default;
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PR23373 &operator=(PR23373&) = default;
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int n;
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float f;
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};
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extern PR23373 pr23373_a;
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PR23373 pr23373_b(pr23373_a);
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// CHECK-LABEL: define {{.*}} @__cxx_global_var_init(
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.{{i32|i64}}({{.*}} @pr23373_b{{.*}}, {{.*}} @pr23373_a{{.*}}, [[W:i32|i64]] 4, i32 4, i1 false)
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PR23373 pr23373_f() { return pr23373_a; }
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// CHECK-LABEL: define {{.*}} @_Z9pr23373_fv(
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.[[W]]({{.*}}, [[W]] 4, i32 4, i1 false)
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void pr23373_g(PR23373 &a, PR23373 &b) { a = b; }
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// CHECK-LABEL: define {{.*}} @_Z9pr23373_g
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.[[W]]({{.*}}, [[W]] 4, i32 4, i1 false)
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struct A { virtual void a(); };
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A x(A& y) { return y; }
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// CHECK: define linkonce_odr {{.*}} @_ZN1AC1ERKS_(%struct.A* {{.*}}%this, %struct.A* dereferenceable({{[0-9]+}})) 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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