commit ca072a39778933df4264ae393bd0ca797db59df6
author Eli Friedman <eli.friedman@gmail.com> Thu Dec 15 02:07:20 2011 +0000
committer Eli Friedman <eli.friedman@gmail.com> Thu Dec 15 02:07:20 2011 +0000
tree c5b3b1a5f67f12e4aefda14538802d74369c6d9e
parent 01d426e0e16aab075c1b0c03552e1cc9b5f3cef1

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

lib/CodeGen/SelectionDAG/TargetLowering.cpp

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index ee329dc..9ced1ac 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -1792,7 +1792,8 @@
   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()) {