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      1 ; RUN: llc < %s -fast-isel -fast-isel-abort=1 -mtriple=x86_64-apple-darwin10 | FileCheck %s
      2 ; RUN: llc < %s -fast-isel -march=x86 -mattr=+sse2 | FileCheck --check-prefix=SSE2 %s
      3 
      4 ; SSE2: xor
      5 ; SSE2: xor
      6 ; SSE2-NOT: xor
      7 
      8 ; CHECK-LABEL: doo:
      9 ; CHECK: xor
     10 define double @doo(double %x) nounwind {
     11   %y = fsub double -0.0, %x
     12   ret double %y
     13 }
     14 
     15 ; CHECK-LABEL: foo:
     16 ; CHECK: xor
     17 define float @foo(float %x) nounwind {
     18   %y = fsub float -0.0, %x
     19   ret float %y
     20 }
     21