| Nick Lewycky | 6f7d834 | 2009-10-13 07:03:23 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as -disable-output < %s |
| 2 | |
| 3 | %"struct.std::pair<int,int>" = type { i32, i32 } |
| 4 | |
| 5 | declare void @_Z3barRKi(i32*) |
| 6 | |
| 7 | declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind |
| 8 | declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind |
| 9 | declare {}* @llvm.invariant.start(i64, i8* nocapture) readonly nounwind |
| 10 | declare void @llvm.invariant.end({}*, i64, i8* nocapture) nounwind |
| 11 | |
| 12 | define i32 @_Z4foo2v() nounwind { |
| 13 | entry: |
| 14 | %x = alloca %"struct.std::pair<int,int>" |
| 15 | %y = bitcast %"struct.std::pair<int,int>"* %x to i8* |
| 16 | |
| 17 | ;; Constructor starts here (this isn't needed since it is immediately |
| 18 | ;; preceded by an alloca, but shown for completeness). |
| 19 | call void @llvm.lifetime.start(i64 8, i8* %y) |
| 20 | |
| 21 | %0 = getelementptr %"struct.std::pair<int,int>"* %x, i32 0, i32 0 |
| 22 | store i32 4, i32* %0, align 8 |
| 23 | %1 = getelementptr %"struct.std::pair<int,int>"* %x, i32 0, i32 1 |
| 24 | store i32 5, i32* %1, align 4 |
| 25 | |
| 26 | ;; Constructor has finished here. |
| 27 | %inv = call {}* @llvm.invariant.start(i64 8, i8* %y) |
| 28 | call void @_Z3barRKi(i32* %0) nounwind |
| 29 | %2 = load i32* %0, align 8 |
| 30 | |
| 31 | ;; Destructor is run here. |
| 32 | call void @llvm.invariant.end({}* %inv, i64 8, i8* %y) |
| 33 | ;; Destructor is done here. |
| 34 | call void @llvm.lifetime.end(i64 8, i8* %y) |
| 35 | ret i32 %2 |
| 36 | } |