| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine | llvm-dis |
| Chris Lattner | eff5f51 | 2004-02-28 05:28:42 +0000 | [diff] [blame] | 2 | |
| Tanya Lattner | aa6f5c9 | 2008-03-09 08:16:40 +0000 | [diff] [blame] | 3 | @X = global i8 0 ; <i8*> [#uses=3] |
| 4 | @Y = global i8 12 ; <i8*> [#uses=2] |
| Chris Lattner | eff5f51 | 2004-02-28 05:28:42 +0000 | [diff] [blame] | 5 | |
| Tanya Lattner | aa6f5c9 | 2008-03-09 08:16:40 +0000 | [diff] [blame] | 6 | declare void @llvm.memmove.i32(i8*, i8*, i32, i32) |
| Chris Lattner | eff5f51 | 2004-02-28 05:28:42 +0000 | [diff] [blame] | 7 | |
| Tanya Lattner | aa6f5c9 | 2008-03-09 08:16:40 +0000 | [diff] [blame] | 8 | declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) |
| 9 | |
| 10 | declare void @llvm.memset.i32(i8*, i8, i32, i32) |
| 11 | |
| 12 | define void @zero_byte_test() { |
| 13 | ; These process zero bytes, so they are a noop. |
| 14 | call void @llvm.memmove.i32( i8* @X, i8* @Y, i32 0, i32 100 ) |
| 15 | call void @llvm.memcpy.i32( i8* @X, i8* @Y, i32 0, i32 100 ) |
| 16 | call void @llvm.memset.i32( i8* @X, i8 123, i32 0, i32 100 ) |
| 17 | ret void |
| Chris Lattner | eff5f51 | 2004-02-28 05:28:42 +0000 | [diff] [blame] | 18 | } |
| 19 | |