| ; RUN: llvm-as < %s | opt -instcombine | llvm-dis |
| |
| declare void %llvm.memmove(sbyte*, sbyte*, uint, uint) |
| declare void %llvm.memcpy(sbyte*, sbyte*, uint, uint) |
| declare void %llvm.memset(sbyte*, ubyte, uint, uint) |
| |
| %X = global sbyte 0 |
| %Y = global sbyte 12 |
| |
| void %zero_byte_test() { |
| ; These process zero bytes, so they are a noop. |
| call void %llvm.memmove(sbyte* %X, sbyte* %Y, uint 0, uint 100) |
| call void %llvm.memcpy(sbyte* %X, sbyte* %Y, uint 0, uint 100) |
| call void %llvm.memset(sbyte* %X, ubyte 123, uint 0, uint 100) |
| ret void |
| } |
| |