[APInt] Use lshrInPlace to replace lshr where possible

This patch uses lshrInPlace to replace code where the object that lshr is called on is being overwritten with the result.

This adds an lshrInPlace(const APInt &) version as well.

Differential Revision: https://reviews.llvm.org/D32155

llvm-svn: 300566

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp
index 5ac98e1c127..8b23179b44b 100644
--- a/llvm/lib/Support/APInt.cpp
+++ b/llvm/lib/Support/APInt.cpp
@@ -1134,8 +1134,8 @@ APInt APInt::ashr(unsigned shiftAmt) const {
 
 /// Logical right-shift this APInt by shiftAmt.
 /// @brief Logical right-shift function.
-APInt APInt::lshr(const APInt &shiftAmt) const {
-  return lshr((unsigned)shiftAmt.getLimitedValue(BitWidth));
+void APInt::lshrInPlace(const APInt &shiftAmt) {
+  lshrInPlace((unsigned)shiftAmt.getLimitedValue(BitWidth));
 }
 
 /// Logical right-shift this APInt by shiftAmt.
@@ -1149,7 +1149,7 @@ void APInt::lshrInPlace(unsigned ShiftAmt) {
     return;
   }
 
-  return tcShiftRight(pVal, getNumWords(), ShiftAmt);
+  tcShiftRight(pVal, getNumWords(), ShiftAmt);
 }
 
 /// Left-shift this APInt by shiftAmt.
@@ -2145,7 +2145,7 @@ void APInt::toString(SmallVectorImpl<char> &Str, unsigned Radix,
     while (Tmp != 0) {
       unsigned Digit = unsigned(Tmp.getRawData()[0]) & MaskAmt;
       Str.push_back(Digits[Digit]);
-      Tmp = Tmp.lshr(ShiftAmt);
+      Tmp.lshrInPlace(ShiftAmt);
     }
   } else {
     APInt divisor(Radix == 10? 4 : 8, Radix);