diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolution.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp index e0750053eb9..ceded879b0f 100644 --- a/llvm/lib/Analysis/ScalarEvolution.cpp +++ b/llvm/lib/Analysis/ScalarEvolution.cpp @@ -2604,6 +2604,11 @@ SolveQuadraticEquation(const SCEVAddRecExpr *AddRec, ScalarEvolution &SE) { // The divisions must be performed as signed divisions. APInt NegB(-B); APInt TwoA( A << 1 ); + if (TwoA.isMinValue()) { + SCEV *CNC = new SCEVCouldNotCompute(); + return std::make_pair(CNC, CNC); + } + ConstantInt *Solution1 = ConstantInt::get((NegB + SqrtVal).sdiv(TwoA)); ConstantInt *Solution2 = ConstantInt::get((NegB - SqrtVal).sdiv(TwoA)); |
