[llvm-commits] [llvm] r53165 - in /llvm/trunk: include/llvm/CodeGen/SelectionDAGNodes.h lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp lib/CodeGen/SelectionDAG/LegalizeTypes.h

[Duncan Sands]

Author: baldrick
Date: Sun Jul  6 19:08:12 2008
New Revision: 53165

URL: http://llvm.org/viewvc/llvm-project?rev=53165&view=rev
Log:
LegalizeTypes soft-float support for stores of a
float value.

Modified:
    llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h

Modified: llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h?rev=53165&r1=53164&r2=53165&view=diff

==============================================================================
--- llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h Sun Jul  6 19:08:12 2008
@@ -2150,8 +2150,10 @@
 ///
 class StoreSDNode : public LSBaseSDNode {
   virtual void ANCHOR();  // Out-of-line virtual method to give class a home.
-    
-  // IsTruncStore - True if the op does a truncation before store.
+
+  // IsTruncStore - True if the op does a truncation before store.  For
+  // integers this is the same as doing a TRUNCATE and storing the result.
+  // For floats, it is the same as doing an FP_ROUND and storing the result.
   bool IsTruncStore;
 protected:
   friend class SelectionDAG;

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp?rev=53165&r1=53164&r2=53165&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp Sun Jul  6 19:08:12 2008
@@ -331,6 +331,7 @@
     case ISD::BR_CC:     Res = SoftenFloatOp_BR_CC(N); break;
     case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
     case ISD::SETCC:     Res = SoftenFloatOp_SETCC(N); break;
+    case ISD::STORE:     Res = SoftenFloatOp_STORE(N, OpNo); break;
     }
   }
 
@@ -496,6 +497,24 @@
                                 DAG.getCondCode(CCCode));
 }
 
+SDOperand DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
+  assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
+  assert(OpNo == 1 && "Can only soften the stored value!");
+  StoreSDNode *ST = cast<StoreSDNode>(N);
+  SDOperand Val = ST->getValue();
+
+  if (ST->isTruncatingStore())
+    // Do an FP_ROUND followed by a non-truncating store.
+    Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, ST->getMemoryVT(),
+                                          Val, DAG.getIntPtrConstant(0)));
+  else
+    Val = GetSoftenedFloat(Val);
+
+  return DAG.getStore(ST->getChain(), Val, ST->getBasePtr(),
+                      ST->getSrcValue(), ST->getSrcValueOffset(),
+                      ST->isVolatile(), ST->getAlignment());
+}
+
 
 //===----------------------------------------------------------------------===//
 //  Float Result Expansion

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h?rev=53165&r1=53164&r2=53165&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h Sun Jul  6 19:08:12 2008
@@ -344,6 +344,7 @@
   SDOperand SoftenFloatOp_BR_CC(SDNode *N);
   SDOperand SoftenFloatOp_SELECT_CC(SDNode *N);
   SDOperand SoftenFloatOp_SETCC(SDNode *N);
+  SDOperand SoftenFloatOp_STORE(SDNode *N, unsigned OpNo);
 
   void SoftenSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS,
                            ISD::CondCode &CCCode);