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      1 ; RUN: llc < %s -march=x86 | grep "(%esp)" | count 2
      2 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
      3 target triple = "i386-apple-darwin9.5"
      4 ; a - a should be found and removed, leaving refs to only L and P
      5 define i8* @test(i8* %a, i8* %L, i8* %P) nounwind {
      6 entry:
      7         %0 = ptrtoint i8* %a to i32
      8         %1 = ptrtoint i8* %P to i32
      9         %2 = sub i32 %1, %0
     10         %3 = ptrtoint i8* %L to i32
     11 	%4 = sub i32 %2, %3         	; <i32> [#uses=1]
     12 	%5 = getelementptr i8* %a, i32 %4		; <i8*> [#uses=1]
     13 	br label %return
     14 
     15 return:		; preds = %bb3
     16 	ret i8* %5
     17 }
     18