Change LowerFP_TO_SINT to create the specific code it needs instead of

unconditionally creating an i64 bitcast.  With the future legalizer
design, operation legalization can't introduce new nodes with illegal
types.

This fixes the rest of olden on ppc32.

llvm-svn: 43005

1 files changed, 11 insertions, 4 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 9ef8f0ebc0d..166eb9aff50 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -2028,7 +2028,7 @@ static SDOperand LowerSELECT_CC(SDOperand Op, SelectionDAG &DAG) {
                          DAG.getNode(ISD::FNEG, MVT::f64, LHS), TV, FV);
     }
       
-      SDOperand Cmp;
+  SDOperand Cmp;
   switch (CC) {
   default: break;       // SETUO etc aren't handled by fsel.
   case ISD::SETULT:
@@ -2081,10 +2081,17 @@ static SDOperand LowerFP_TO_SINT(SDOperand Op, SelectionDAG &DAG) {
   }
   
   // Convert the FP value to an int value through memory.
-  SDOperand Bits = DAG.getNode(ISD::BIT_CONVERT, MVT::i64, Tmp);
+  SDOperand FIPtr = DAG.CreateStackTemporary(MVT::f64);
+  
+  // Emit a store to the stack slot.
+  SDOperand Chain = DAG.getStore(DAG.getEntryNode(), Tmp, FIPtr, NULL, 0);
+
+  // Result is a load from the stack slot.  If loading 4 bytes, make sure to
+  // add in a bias.
   if (Op.getValueType() == MVT::i32)
-    Bits = DAG.getNode(ISD::TRUNCATE, MVT::i32, Bits);
-  return Bits;
+    FIPtr = DAG.getNode(ISD::ADD, FIPtr.getValueType(), FIPtr,
+                        DAG.getConstant(4, FIPtr.getValueType()));
+  return DAG.getLoad(Op.getValueType(), Chain, FIPtr, NULL, 0);
 }
 
 static SDOperand LowerFP_ROUND_INREG(SDOperand Op, SelectionDAG &DAG) {