From: Craig Topper <craig.topper@gmail.com>
Date: Mon, 8 May 2017 04:55:13 +0000 (+0000)
Subject: [SCEV] Use APInt::operator*=(uint64_t) to avoid a temporary APInt for a constant.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ba36bcb1c10a7ae7c4fbbdd2ea23443aa353c31e;p=llvm

[SCEV] Use APInt::operator*=(uint64_t) to avoid a temporary APInt for a constant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302404 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index b1ab6565371..01dca079314 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -7376,7 +7376,6 @@ SolveQuadraticEquation(const SCEVAddRecExpr *AddRec, ScalarEvolution &SE) {
   const APInt &M = MC->getAPInt();
   const APInt &N = NC->getAPInt();
   APInt Two(BitWidth, 2);
-  APInt Four(BitWidth, 4);
 
   {
     using namespace APIntOps;
@@ -7392,7 +7391,7 @@ SolveQuadraticEquation(const SCEVAddRecExpr *AddRec, ScalarEvolution &SE) {
     // Compute the B^2-4ac term.
     APInt SqrtTerm(B);
     SqrtTerm *= B;
-    SqrtTerm -= Four * (A * C);
+    SqrtTerm -= 4 * (A * C);
 
     if (SqrtTerm.isNegative()) {
       // The loop is provably infinite.