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      1 ; RUN: opt < %s -instcombine -S | not grep "a.off"
      2 ; PR1949
      3 
      4 define i1 @test1(i32 %a) {
      5   %a.off = add i32 %a, 4          ; <i32> [#uses=1]
      6   %C = icmp ult i32 %a.off, 4             ; <i1> [#uses=1]
      7   ret i1 %C
      8 }
      9 
     10 define i1 @test2(i32 %a) {
     11   %a.off = sub i32 %a, 4          ; <i32> [#uses=1]
     12   %C = icmp ugt i32 %a.off, -5             ; <i1> [#uses=1]
     13   ret i1 %C
     14 }
     15 
     16 define i1 @test3(i32 %a) {
     17   %a.off = add i32 %a, 4          ; <i32> [#uses=1]
     18   %C = icmp slt i32 %a.off, 2147483652             ; <i1> [#uses=1]
     19   ret i1 %C
     20 }
     21