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c9bd88e681
This makes the C++ ABI depend entirely on the target: MS ABI for -win32 triples, Itanium otherwise. It's no longer possible to do weird combinations. To be able to run a test with a specific ABI without constraining it to a specific triple, new substitutions are added to lit: %itanium_abi_triple and %ms_abi_triple can be used to get the current target triple adjusted to the desired ABI. For example, if the test suite is running with the i686-pc-win32 target, %itanium_abi_triple will expand to i686-pc-mingw32. Differential Revision: http://llvm-reviews.chandlerc.com/D2545 llvm-svn: 199250
27 lines
684 B
C++
27 lines
684 B
C++
// RUN: %clang_cc1 -emit-llvm %s -verify -fno-rtti -triple %itanium_abi_triple -o - | FileCheck %s
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// expected-no-diagnostics
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struct A {
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virtual ~A(){};
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};
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struct B : public A {
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B() : A() {}
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};
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// An upcast can be resolved statically and can be used with -fno-rtti, iff it
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// does not use runtime support.
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A *upcast(B *b) {
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return dynamic_cast<A *>(b);
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// CHECK-LABEL: define %struct.A* @_Z6upcastP1B
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// CHECK-NOT: call i8* @__dynamic_cast
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}
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// A NoOp dynamic_cast can be used with -fno-rtti iff it does not use
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// runtime support.
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B *samecast(B *b) {
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return dynamic_cast<B *>(b);
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// CHECK-LABEL: define %struct.B* @_Z8samecastP1B
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// CHECK-NOT: call i8* @__dynamic_cast
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}
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