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 } 37
