1 ; RUN: opt < %s -instcombine -disable-output 2 ; Checks that bitcasts are not converted into GEP when 3 ; when the size of an aggregate cannot be determined. 4 %swift.opaque = type opaque 5 %SQ = type <{ [8 x i8] }> 6 %Si = type <{ i64 }> 7 8 %V = type <{ <{ %Vs4Int8, %Vs4Int8, %Vs4Int8, %Vs4Int8, %Vs4Int8, %Vs4Int8, %Vs4Int8, %Vs4Int8 }>, %Si, %SQ, %SQ, %Si, %swift.opaque }> 9 %Vs4Int8 = type <{ i8 }> 10 %swift.type = type { i64 } 11 12 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, 13 i64, i32, i1) #8 14 15 @_swift_slowAlloc = external global i8* (i64, i64)* 16 17 declare i8* @rt_swift_slowAlloc(i64, i64) 18 19 define %swift.opaque* @_TwTkV([24 x i8]* %dest, %swift.opaque* %src, 20 %swift.type* %bios_boot_params) #0 { 21 entry: 22 %0 = bitcast %swift.opaque* %src to %V* 23 %1 = call noalias i8* @rt_swift_slowAlloc(i64 40, i64 0) #11 24 %2 = bitcast [24 x i8]* %dest to i8** 25 store i8* %1, i8** %2, align 8 26 %3 = bitcast i8* %1 to %V* 27 %4 = bitcast %V* %3 to i8* 28 %5 = bitcast %V* %0 to i8* 29 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %4, i8* %5, i64 40, i32 1, i1 false) 30 %6 = bitcast %V* %3 to %swift.opaque* 31 ret %swift.opaque* %6 32 } 33
