[llvm] r300799 - [APInt] Implement operator==(uint64_t) similar to ugt/ult(uint64_t) to remove one of the out of line EqualsSlowCase methods.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Wed Apr 19 18:57:51 2017
New Revision: 300799

URL: http://llvm.org/viewvc/llvm-project?rev=300799&view=rev
Log:
[APInt] Implement operator==(uint64_t) similar to ugt/ult(uint64_t) to remove one of the out of line EqualsSlowCase methods.

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=300799&r1=300798&r2=300799&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/APInt.h (original)
+++ llvm/trunk/include/llvm/ADT/APInt.h Wed Apr 19 18:57:51 2017
@@ -200,9 +200,6 @@ private:
   /// out-of-line slow case for operator==
   bool EqualSlowCase(const APInt &RHS) const LLVM_READONLY;
 
-  /// out-of-line slow case for operator==
-  bool EqualSlowCase(uint64_t Val) const LLVM_READONLY;
-
   /// out-of-line slow case for countLeadingZeros
   unsigned countLeadingZerosSlowCase() const LLVM_READONLY;
 
@@ -1031,9 +1028,7 @@ public:
   ///
   /// \returns true if *this == Val
   bool operator==(uint64_t Val) const {
-    if (isSingleWord())
-      return VAL == Val;
-    return EqualSlowCase(Val);
+    return (isSingleWord() || getActiveBits() <= 64) && getZExtValue() == Val;
   }
 
   /// \brief Equality comparison.

Modified: llvm/trunk/lib/Support/APInt.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/APInt.cpp?rev=300799&r1=300798&r2=300799&view=diff
==============================================================================
--- llvm/trunk/lib/Support/APInt.cpp (original)
+++ llvm/trunk/lib/Support/APInt.cpp Wed Apr 19 18:57:51 2017
@@ -364,14 +364,6 @@ bool APInt::EqualSlowCase(const APInt& R
   return std::equal(pVal, pVal + getNumWords(), RHS.pVal);
 }
 
-bool APInt::EqualSlowCase(uint64_t Val) const {
-  unsigned n = getActiveBits();
-  if (n <= APINT_BITS_PER_WORD)
-    return pVal[0] == Val;
-  else
-    return false;
-}
-
 bool APInt::ult(const APInt& RHS) const {
   assert(BitWidth == RHS.BitWidth && "Bit widths must be same for comparison");
   if (isSingleWord())