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; 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
}
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