1; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core2 | FileCheck %s 2; rdar://7842028 3 4; Do not delete partially dead copy instructions. 5; %RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def> 6; REP_MOVSD %ECX<imp-def,dead>, %EDI<imp-def,dead>, %ESI<imp-def,dead>, %ECX<imp-use,kill>, %EDI<imp-use,kill>, %ESI<imp-use,kill> 7 8 9%struct.F = type { %struct.FC*, i32, i32, i8, i32, i32, i32 } 10%struct.FC = type { [10 x i8], [32 x i32], %struct.FC*, i32 } 11 12define void @t(%struct.F* %this) nounwind { 13entry: 14; CHECK: t: 15; CHECK: addq $12, %rsi 16 %BitValueArray = alloca [32 x i32], align 4 17 %tmp2 = getelementptr inbounds %struct.F* %this, i64 0, i32 0 18 %tmp3 = load %struct.FC** %tmp2, align 8 19 %tmp4 = getelementptr inbounds %struct.FC* %tmp3, i64 0, i32 1, i64 0 20 %tmp5 = bitcast [32 x i32]* %BitValueArray to i8* 21 %tmp6 = bitcast i32* %tmp4 to i8* 22 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp5, i8* %tmp6, i64 128, i32 4, i1 false) 23 unreachable 24} 25 26declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 27