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; 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, i32, i1) #1
declare void @llvm.lifetime.start(i64, i8* nocapture) #1
declare void @llvm.lifetime.end(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(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* %arg1, i8* %tmp5, i64 16, i32 8, i1 false)
call void @llvm.lifetime.end(i64 16, i8* %tmp5)
ret void
}
attributes #1 = { argmemonly nounwind }
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