| Richard Smith | 454b4af | 2014-01-11 01:24:05 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++98 -triple i386-unknown-unknown -fno-elide-constructors -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX98 |
| 2 | // RUN: %clang_cc1 -std=c++11 -triple i386-unknown-unknown -fno-elide-constructors -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX11 |
| 3 | // RUN: %clang_cc1 -std=c++98 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX98-ELIDE |
| 4 | // RUN: %clang_cc1 -std=c++11 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX11-ELIDE |
| 5 | |
| 6 | // Reduced from PR12208 |
| 7 | class X { |
| 8 | public: |
| 9 | X(); |
| 10 | X(const X&); |
| 11 | #if __cplusplus >= 201103L |
| 12 | X(X&&); |
| 13 | #endif |
| 14 | ~X(); |
| 15 | }; |
| 16 | |
| 17 | // CHECK-LABEL: define void @_Z4Testv( |
| 18 | X Test() |
| 19 | { |
| 20 | X x; |
| 21 | |
| 22 | // Check that the copy constructor for X is called with result variable as |
| 23 | // sret argument. |
| 24 | // CHECK-CXX98: call void @_ZN1XC1ERKS_( |
| 25 | // CHECK-CXX11: call void @_ZN1XC1EOS_( |
| 26 | // CHECK-CXX98-ELIDE-NOT: call void @_ZN1XC1ERKS_( |
| 27 | // CHECK-CXX11-ELIDE-NOT: call void @_ZN1XC1EOS_( |
| 28 | |
| 29 | // Make sure that the destructor for X is called. |
| 30 | // FIXME: This call is present even in the -ELIDE runs, but is guarded by a |
| 31 | // branch that is never taken in those cases. We could generate better IR |
| 32 | // here. |
| 33 | // CHECK: call void @_ZN1XD1Ev( |
| 34 | return x; |
| 35 | } |