blob: 1f327b99e9cbf23b6a3755c87a87bacfd2fda34e [file] [log] [blame]
; RUN: opt < %s -instcombine | llvm-dis
@X = global i8 0 ; <i8*> [#uses=3]
@Y = global i8 12 ; <i8*> [#uses=2]
declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i1)
declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1)
declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1)
define void @zero_byte_test() {
; These process zero bytes, so they are a noop.
call void @llvm.memmove.p0i8.p0i8.i32(i8* align 128 @X, i8* align 128 @Y, i32 0, i1 false )
call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 128 @X, i8* align 128 @Y, i32 0, i1 false )
call void @llvm.memset.p0i8.i32(i8* align 128 @X, i8 123, i32 0, i1 false )
ret void
}