improve support for fgetsign
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45322 91177308-0d34-0410-b5e6-96231b3b80d8
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 @@
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";