diff options
| author | Dale Johannesen <dalej@apple.com> | 2007-08-31 17:03:33 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2007-08-31 17:03:33 +0000 |
| commit | ee8476847da85e1ac44744f7f64de0675b89dc15 (patch) | |
| tree | 51589d354635da71f25b3a5ac7f5b76b6d61d274 /lib/CodeGen/SelectionDAG/SelectionDAG.cpp | |
| parent | 1b5dcc34b701639f94008658a2042abc43b9b910 (diff) | |
Revise per review of previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41645 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index f4ee33f36a..156c73959f 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -979,20 +979,32 @@ SDOperand SelectionDAG::FoldSetCC(MVT::ValueType VT, SDOperand N1, APFloat::cmpResult R = N1C->getValueAPF().compare(N2C->getValueAPF()); switch (Cond) { default: break; - case ISD::SETOEQ: - case ISD::SETEQ: return getConstant(R==APFloat::cmpEqual, VT); - case ISD::SETONE: - case ISD::SETNE: return getConstant(R==APFloat::cmpGreaterThan || + case ISD::SETEQ: if (R==APFloat::cmpUnordered) + return getNode(ISD::UNDEF, VT); + // fall through + case ISD::SETOEQ: return getConstant(R==APFloat::cmpEqual, VT); + case ISD::SETNE: if (R==APFloat::cmpUnordered) + return getNode(ISD::UNDEF, VT); + // fall through + case ISD::SETONE: return getConstant(R==APFloat::cmpGreaterThan || R==APFloat::cmpLessThan, VT); - case ISD::SETOLT: - case ISD::SETLT: return getConstant(R==APFloat::cmpLessThan, VT); - case ISD::SETOGT: - case ISD::SETGT: return getConstant(R==APFloat::cmpGreaterThan, VT); - case ISD::SETOLE: - case ISD::SETLE: return getConstant(R==APFloat::cmpLessThan || + case ISD::SETLT: if (R==APFloat::cmpUnordered) + return getNode(ISD::UNDEF, VT); + // fall through + case ISD::SETOLT: return getConstant(R==APFloat::cmpLessThan, VT); + case ISD::SETGT: if (R==APFloat::cmpUnordered) + return getNode(ISD::UNDEF, VT); + // fall through + case ISD::SETOGT: return getConstant(R==APFloat::cmpGreaterThan, VT); + case ISD::SETLE: if (R==APFloat::cmpUnordered) + return getNode(ISD::UNDEF, VT); + // fall through + case ISD::SETOLE: return getConstant(R==APFloat::cmpLessThan || R==APFloat::cmpEqual, VT); - case ISD::SETOGE: - case ISD::SETGE: return getConstant(R==APFloat::cmpGreaterThan || + case ISD::SETGE: if (R==APFloat::cmpUnordered) + return getNode(ISD::UNDEF, VT); + // fall through + case ISD::SETOGE: return getConstant(R==APFloat::cmpGreaterThan || R==APFloat::cmpEqual, VT); case ISD::SETO: return getConstant(R!=APFloat::cmpUnordered, VT); case ISD::SETUO: return getConstant(R==APFloat::cmpUnordered, VT); |