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] }>
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 }
12 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #8
14 @_swift_slowAlloc = external global i8* (i64, i64)*
16 declare i8* @rt_swift_slowAlloc(i64, i64)
18 define %swift.opaque* @_TwTkV([24 x i8]* %dest, %swift.opaque* %src,
19 %swift.type* %bios_boot_params) #0 {
21 %0 = bitcast %swift.opaque* %src to %V*
22 %1 = call noalias i8* @rt_swift_slowAlloc(i64 40, i64 0) #11
23 %2 = bitcast [24 x i8]* %dest to i8**
24 store i8* %1, i8** %2, align 8
25 %3 = bitcast i8* %1 to %V*
26 %4 = bitcast %V* %3 to i8*
27 %5 = bitcast %V* %0 to i8*
28 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %4, i8* %5, i64 40, i1 false)
29 %6 = bitcast %V* %3 to %swift.opaque*