llvm/test/CodeGen/X86/2004-04-09-SameValueCoalescing.llx

; Linear scan does not currently coalesce any two variables that have
; overlapping live intervals. When two overlapping intervals have the same
; value, they can be joined though.
;
; RUN: llvm-as < %s | llc -march=x86 -regalloc=linearscan | not grep 'mov %[A-Z]\{2,3\}, %[A-Z]\{2,3\}'

long %test(long %x) {
entry:
        %tmp.1 = mul long %x, 4294967297                ; <long> [#uses=1]
        ret long %tmp.1
}