| Chris Lattner | f52053c | 2009-03-04 19:20:50 +0000 | [diff] [blame] | 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. |
| Dan Gohman | 3c7d308 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 3 | ; RUN: opt < %s -scalarrepl -S | grep {store i16 1, .*, align 1} |
| Chris Lattner | f52053c | 2009-03-04 19:20:50 +0000 | [diff] [blame] | 4 | ; PR3720 |
| Kenneth Uildriks | a092c12 | 2009-11-03 15:29:06 +0000 | [diff] [blame] | 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" |
| Chris Lattner | f52053c | 2009-03-04 19:20:50 +0000 | [diff] [blame] | 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* %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.i32(i8* %p, i8* %s1, i32 2, i32 1) |
| 16 | ret void |
| 17 | } |
| 18 | |
| 19 | declare void @llvm.memcpy.i32(i8* nocapture, i8* nocapture, i32, i32) nounwind |
| 20 | |