Author: lattner
Date: Sat Dec 22 15:26:52 2007
New Revision: 45322
URL: http://llvm.org/viewvc/llvm-project?rev=45322&view=rev
Log:
improve support for fgetsign
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=45322&r1=45321&r2=45322&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Sat Dec 22 15:26:52
2007
@@ -1323,6 +1323,11 @@
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 @@
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";
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