| ; RUN: opt < %s -O1 -S | FileCheck %s | |
| ; performCallSlotOptzn in MemCpy should not exchange the calls to | |
| ; @llvm.lifetime.start and @llvm.memcpy. | |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #1 | |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 | |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 | |
| define void @_ZN4CordC2EOS_(i8* nocapture dereferenceable(16) %arg1) { | |
| bb: | |
| ; CHECK-LABEL: @_ZN4CordC2EOS_ | |
| ; CHECK-NOT: call void @llvm.lifetime.start | |
| ; CHECK: ret void | |
| %tmp = alloca [8 x i8], align 8 | |
| %tmp5 = bitcast [8 x i8]* %tmp to i8* | |
| call void @llvm.lifetime.start.p0i8(i64 16, i8* %tmp5) | |
| %tmp10 = getelementptr inbounds i8, i8* %tmp5, i64 7 | |
| store i8 0, i8* %tmp10, align 1 | |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %arg1, i8* align 8 %tmp5, i64 16, i1 false) | |
| call void @llvm.lifetime.end.p0i8(i64 16, i8* %tmp5) | |
| ret void | |
| } | |
| attributes #1 = { argmemonly nounwind } |