[llvm] r335427 - Also forward declare BitScanReverse.

[Zachary Turner via llvm-commits]

Author: zturner
Date: Sat Jun 23 18:48:25 2018
New Revision: 335427

URL: http://llvm.org/viewvc/llvm-project?rev=335427&view=rev
Log:
Also forward declare BitScanReverse.

With the removal of intrin.h in an earlier patch, the intrinsics
that we were actually using were manually re-declared, however
several of them were missed leading to compilation failures with
MSVC.  Fix those.

Modified:
    llvm/trunk/include/llvm/Support/MathExtras.h

Modified: llvm/trunk/include/llvm/Support/MathExtras.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/MathExtras.h?rev=335427&r1=335426&r2=335427&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/MathExtras.h (original)
+++ llvm/trunk/include/llvm/Support/MathExtras.h Sat Jun 23 18:48:25 2018
@@ -34,6 +34,8 @@
 extern "C" {
 unsigned char _BitScanForward(unsigned long *_Index, unsigned long _Mask);
 unsigned char _BitScanForward64(unsigned long *_Index, unsigned __int64 _Mask);
+unsigned char _BitScanReverse(unsigned long * _Index, unsigned long _Mask);
+unsigned char _BitScanReverse64(unsigned long * _Index, unsigned __int64 _Mask);
 }
 #endif