maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[SCEV] Use copy initialization of APInts instead of direct initialization. 

This is based on post commit feed back from r302769.

llvm-svn: 303092
This commit is contained in:
Craig Topper 2017-05-15 18:14:16 +00:00
parent e9d2ddc9dd
commit 716cad8bb7
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
llvm/lib/Analysis/ScalarEvolution.cpp
View File

@ -7403,17 +7403,17 @@ SolveQuadraticEquation(const SCEVAddRecExpr *AddRec, ScalarEvolution &SE) {
// Convert from chrec coefficients to polynomial coefficients AX^2+BX+C
// The A coefficient is N/2
APInt A(N.sdiv(Two));
APInt A = N.sdiv(Two);
// The B coefficient is M-N/2
APInt B(M);
APInt B = M;
B -= A; // A is the same as N/2.
// The C coefficient is L.
const APInt& C = L;
// Compute the B^2-4ac term.
APInt SqrtTerm(B);
APInt SqrtTerm = B;
SqrtTerm *= B;
SqrtTerm -= 4 * (A * C);
@ -7424,12 +7424,12 @@ SolveQuadraticEquation(const SCEVAddRecExpr *AddRec, ScalarEvolution &SE) {
// Compute sqrt(B^2-4ac). This is guaranteed to be the nearest
// integer value or else APInt::sqrt() will assert.
APInt SqrtVal(SqrtTerm.sqrt());
APInt SqrtVal = SqrtTerm.sqrt();
// Compute the two solutions for the quadratic formula.
// The divisions must be performed as signed divisions.
APInt NegB(-std::move(B));
APInt TwoA(std::move(A));
APInt NegB = -std::move(B);
APInt TwoA = std::move(A);
TwoA <<= 1;
if (TwoA.isNullValue())
return None;