[LLVMbugs] [Bug 8011] New: _MM_HINT_T0, 1, 2 defined incorrectly (xmmintrin.h)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8011

           Summary: _MM_HINT_T0,1,2 defined incorrectly (xmmintrin.h)
           Product: clang
           Version: 2.7
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Headers
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: jed at 59a2.org
                CC: llvmbugs at cs.uiuc.edu


_mm_prefetch(0,_MM_HINT_T0) compiles to prefetcht2.  Since _mm_prefetch() is
implemented in terms of __builtin_prefetch, the hints should be defined the
same way as GCC:

_MM_HINT_T0  3
_MM_HINT_T1  2
_MM_HINT_T2  1
_MM_HINT_NTA 0

This is a 2-line fix in the xmmintrin.h header.

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