6cbd65d84d
& operator (ignoring any overloaded operator& for the type). The purpose of this builtin is for use in std::addressof, to allow it to be made constexpr; the existing implementation technique (reinterpret_cast to some reference type, take address, reinterpert_cast back) does not permit this because reinterpret_cast between reference types is not permitted in a constant expression in C++11 onwards. llvm-svn: 186053
18 lines
377 B
C++
18 lines
377 B
C++
// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
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// PR8839
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extern "C" char memmove();
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int main() {
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// CHECK: call {{signext i8|i8}} @memmove()
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return memmove();
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}
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struct S;
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// CHECK: define {{.*}} @_Z9addressofbR1SS0_(
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S *addressof(bool b, S &s, S &t) {
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// CHECK: %[[LVALUE:.*]] = phi
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// CHECK: ret {{.*}}* %[[LVALUE]]
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return __builtin_addressof(b ? s : t);
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}
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