1 ; The store into %p should end up with a known alignment of 1, since the memcpy 2 ; is only known to access it with 1-byte alignment. 3 ; RUN: opt < %s -scalarrepl -S | grep "store i16 1, .*, align 1" 4 ; PR3720 5 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64" 6 7 %struct.st = type { i16 } 8 9 define void @f(i8* %p) nounwind { 10 entry: 11 %s = alloca %struct.st, align 4 ; <%struct.st*> [#uses=2] 12 %0 = getelementptr %struct.st, %struct.st* %s, i32 0, i32 0 ; <i16*> [#uses=1] 13 store i16 1, i16* %0, align 4 14 %s1 = bitcast %struct.st* %s to i8* ; <i8*> [#uses=1] 15 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* %s1, i32 2, i32 1, i1 false) 16 ret void 17 } 18 19 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind 20
