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| author | Chris Lattner <sabre@nondot.org> | 2007-12-22 21:26:52 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-12-22 21:26:52 +0000 |
| commit | 13f06830c10455e7adbbd55161bf03989b4a06a9 (patch) | |
| tree | 4a3acb1cc8747b3699c9f2b07eaec634252218a3 /lib/CodeGen | |
| parent | 2f36eb975c28224cd21bfe7f930271dd64a15bdd (diff) | |
| download | external_llvm-13f06830c10455e7adbbd55161bf03989b4a06a9.zip external_llvm-13f06830c10455e7adbbd55161bf03989b4a06a9.tar.gz external_llvm-13f06830c10455e7adbbd55161bf03989b4a06a9.tar.bz2 | |
improve support for fgetsign
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45322 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index cbeda67..ba0a08b 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1323,6 +1323,11 @@ void SelectionDAG::ComputeMaskedBits(SDOperand Op, uint64_t Mask, KnownZero |= (~InMask) & Mask; return; } + case ISD::FGETSIGN: + // All bits are zero except the low bit. + KnownZero = MVT::getIntVTBitMask(Op.getValueType()) ^ 1; + return; + case ISD::ADD: { // If either the LHS or the RHS are Zero, the result is zero. ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1); @@ -3703,6 +3708,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const { case ISD::FDIV: return "fdiv"; case ISD::FREM: return "frem"; case ISD::FCOPYSIGN: return "fcopysign"; + case ISD::FGETSIGN: return "fgetsign"; case ISD::SETCC: return "setcc"; case ISD::SELECT: return "select"; |