[ValueTracking] Use APInt::operator|=(uint64_t) instead of creating a temporary APInt...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301325 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 5067fbc49792a912afde9c6e5cb9738882e95deb..02db651a1f9e08915a17819951ad5d068d867906 100644 (file)
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -2239,7 +2239,7 @@ static unsigned ComputeNumSignBitsImpl(const Value *V, unsigned Depth,
 
         // If the input is known to be 0 or 1, the output is 0/-1, which is all
         // sign bits set.
-        if ((KnownZero | APInt(TyBits, 1)).isAllOnesValue())
+        if ((KnownZero | 1).isAllOnesValue())
           return TyBits;
 
         // If we are subtracting one from a positive number, there is no carry
@@ -2263,7 +2263,7 @@ static unsigned ComputeNumSignBitsImpl(const Value *V, unsigned Depth,
         computeKnownBits(U->getOperand(1), KnownZero, KnownOne, Depth + 1, Q);
         // If the input is known to be 0 or 1, the output is 0/-1, which is all
         // sign bits set.
-        if ((KnownZero | APInt(TyBits, 1)).isAllOnesValue())
+        if ((KnownZero | 1).isAllOnesValue())
           return TyBits;
 
         // If the input is known to be positive (the sign bit is known clear),