X86: Rename the CLMUL target feature to PCLMUL.

It was renamed in gcc/gas a while ago and causes all kinds of
confusion because it was named differently in llvm and clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157745 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 766f2da..544491f 100644
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -85,8 +85,8 @@
   /// HasAES - Target has AES instructions
   bool HasAES;
 
-  /// HasCLMUL - Target has carry-less multiplication
-  bool HasCLMUL;
+  /// HasPCLMUL - Target has carry-less multiplication
+  bool HasPCLMUL;
 
   /// HasFMA3 - Target has 3-operand fused multiply-add
   bool HasFMA3;
@@ -203,7 +203,7 @@
   bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
   bool hasPOPCNT() const { return HasPOPCNT; }
   bool hasAES() const { return HasAES; }
-  bool hasCLMUL() const { return HasCLMUL; }
+  bool hasPCLMUL() const { return HasPCLMUL; }
   bool hasFMA3() const { return HasFMA3; }
   bool hasFMA4() const { return HasFMA4; }
   bool hasXOP() const { return HasXOP; }