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llvm-project/clang/test/CodeGenCXX/enable_if.cpp

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Add mangling for attribute enable_if. The demangling patch for libcxxabi is still in review. llvm-svn: 207296
2014-04-26 08:14:00 +08:00
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-pc-linux-gnu| FileCheck %s
[Sema] Fix address-of + enable_if overloading logic Previously, our logic when taking the address of an overloaded function would not consider enable_if attributes, so long as all of the enable_if conditions on a given candidate were true. So, two functions with identical signatures (one with enable_if attributes, the other without), would be considered equally good overloads. If we were calling the function instead of taking its address, then the function with enable_if attributes would be preferred. This patch makes us prefer the candidate with enable_if regardless of if we're calling or taking the address of an overloaded function. Differential Revision: http://reviews.llvm.org/D13795 llvm-svn: 250486
2015-10-16 09:17:38 +08:00
// Test address-of overloading logic
int test5(int);
template <typename T>
T test5(T) __attribute__((enable_if(1, "better than non-template")));
// CHECK: @_Z5test5IiEUa9enable_ifIXLi1EEET_S0_
int (*Ptr)(int) = &test5;
Add mangling for attribute enable_if. The demangling patch for libcxxabi is still in review. llvm-svn: 207296
2014-04-26 08:14:00 +08:00
// Test itanium mangling for attribute enable_if
// CHECK: _Z5test1Ua9enable_ifIXeqfL0p_Li1EEEi
void test1(int i) __attribute__((enable_if(i == 1, ""))) {}
void ext();
// CHECK: _Z5test2Ua9enable_ifIXneadL_Z3extvELi0EEEi
void test2(int i) __attribute__((enable_if(&ext != 0, ""))) {}
// CHECK: _Z5test3Ua9enable_ifIXeqfL0p_Li1EEXeqfL0p0_Li2EEEii
void test3(int i, int j) __attribute__((enable_if(i == 1, ""), enable_if(j == 2, ""))) {}
// CHECK: _ZN5test4IdE1fEUa9enable_ifIXeqfL0p_Li1EEXeqfL0p0_Li2EEEi
template <typename T>
class test4 {
virtual void f(int i, int j) __attribute__((enable_if(i == 1, ""))) __attribute__((enable_if(j == 2, "")));
};
template class test4<double>;