6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-21 06:30:16 +00:00
Code Issues Projects Releases Wiki Activity

visitVBinOp: Can't fold divide by zero!

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28584 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-05-31 06:08:35 +00:00
parent 25edc3565c
commit 7b336a8746
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
View File

@ -2778,6 +2778,14 @@ SDOperand DAGCombiner::visitVBinOp(SDNode *N, ISD::NodeType IntOp,
RHSOp.getOpcode() != ISD::Constant &&
RHSOp.getOpcode() != ISD::ConstantFP))
break;
// Can't fold divide by zero.
if (N->getOpcode() == ISD::VSDIV || N->getOpcode() == ISD::VUDIV) {
if ((RHSOp.getOpcode() == ISD::Constant &&
cast<ConstantSDNode>(RHSOp.Val)->isNullValue()) ||
(RHSOp.getOpcode() == ISD::ConstantFP &&
!cast<ConstantFPSDNode>(RHSOp.Val)->getValue()))
break;
}
Ops.push_back(DAG.getNode(ScalarOp, EltType, LHSOp, RHSOp));
AddToWorkList(Ops.back().Val);
assert((Ops.back().getOpcode() == ISD::UNDEF ||