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add a case missing from the dag combiner that exposed the failure on

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2005-10-21-longlonggtu.ll.

llvm-svn: 23875
This commit is contained in:
Chris Lattner 2005-10-21 21:23:25 +00:00
parent ffa76df587
commit 9f1b2541f5
1 changed files with 3 additions and 0 deletions
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3
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -2370,6 +2370,9 @@ SDOperand DAGCombiner::SimplifySetCC(MVT::ValueType VT, SDOperand N0,
// Canonicalize setgt X, Min --> setne X, Min
if ((Cond == ISD::SETGT || Cond == ISD::SETUGT) && C1 == MinVal)
return DAG.getSetCC(VT, N0, N1, ISD::SETNE);
// Canonicalize setlt X, Max --> setne X, Max
if ((Cond == ISD::SETLT || Cond == ISD::SETULT) && C1 == MaxVal)
return DAG.getSetCC(VT, N0, N1, ISD::SETNE);
// If we have setult X, 1, turn it into seteq X, 0
if ((Cond == ISD::SETLT || Cond == ISD::SETULT) && C1 == MinVal+1)