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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-12-15 02:07:20 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-12-15 02:07:20 +0000 |
| commit | ca072a39778933df4264ae393bd0ca797db59df6 (patch) | |
| tree | c5b3b1a5f67f12e4aefda14538802d74369c6d9e /lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | 01d426e0e16aab075c1b0c03552e1cc9b5f3cef1 (diff) | |
Don't try to form FGETSIGN after legalization; it is possible in some cases, but the existing code can't do it correctly. PR11570.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146630 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/TargetLowering.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index ee329dc671..9ced1ac243 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1792,7 +1792,8 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op, case ISD::BITCAST: // If this is an FP->Int bitcast and if the sign bit is the only // thing demanded, turn this into a FGETSIGN. - if (!Op.getValueType().isVector() && + if (!TLO.LegalOperations() && + !Op.getValueType().isVector() && !Op.getOperand(0).getValueType().isVector() && NewMask == APInt::getSignBit(Op.getValueType().getSizeInBits()) && Op.getOperand(0).getValueType().isFloatingPoint()) { |