[llvm] r298881 - [APInt] Move operator=(uint64_t) inline as its pretty simple and is often used with small constants that the compiler can optimize.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Mon Mar 27 15:07:31 2017
New Revision: 298881

URL: http://llvm.org/viewvc/llvm-project?rev=298881&view=rev
Log:
[APInt] Move operator=(uint64_t) inline as its pretty simple and is often used with small constants that the compiler can optimize.

While there recognize that we only need to clearUnusedBits on the single word case.



Modified:
    llvm/trunk/include/llvm/ADT/APInt.h
    llvm/trunk/lib/Support/APInt.cpp

Modified: llvm/trunk/include/llvm/ADT/APInt.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/APInt.h?rev=298881&r1=298880&r2=298881&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/APInt.h (original)
+++ llvm/trunk/include/llvm/ADT/APInt.h Mon Mar 27 15:07:31 2017
@@ -676,7 +676,16 @@ public:
   /// than 64, the value is zero filled in the unspecified high order bits.
   ///
   /// \returns *this after assignment of RHS value.
-  APInt &operator=(uint64_t RHS);
+  APInt &operator=(uint64_t RHS) {
+    if (isSingleWord()) {
+      VAL = RHS;
+      clearUnusedBits();
+    } else {
+      pVal[0] = RHS;
+      memset(pVal+1, 0, (getNumWords() - 1) * APINT_WORD_SIZE);
+    }
+    return *this;
+  }
 
   /// \brief Bitwise AND assignment operator.
   ///

Modified: llvm/trunk/lib/Support/APInt.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/APInt.cpp?rev=298881&r1=298880&r2=298881&view=diff
==============================================================================
--- llvm/trunk/lib/Support/APInt.cpp (original)
+++ llvm/trunk/lib/Support/APInt.cpp Mon Mar 27 15:07:31 2017
@@ -157,16 +157,6 @@ APInt& APInt::AssignSlowCase(const APInt
   return clearUnusedBits();
 }
 
-APInt& APInt::operator=(uint64_t RHS) {
-  if (isSingleWord())
-    VAL = RHS;
-  else {
-    pVal[0] = RHS;
-    memset(pVal+1, 0, (getNumWords() - 1) * APINT_WORD_SIZE);
-  }
-  return clearUnusedBits();
-}
-
 /// This method 'profiles' an APInt for use with FoldingSet.
 void APInt::Profile(FoldingSetNodeID& ID) const {
   ID.AddInteger(BitWidth);