X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FSelectionDAG%2FTargetLowering.cpp;h=1e7e847b8adba831b856087144f6a0fb927bf946;hb=ee4c619b3b28a42078fc8033e5dccd42fc6edd42;hp=a85890a433faaffe296dd618ded0323efa9e8350;hpb=0bb41608e94adfe9884bc188457c4f6ae47ea43c;p=oota-llvm.git

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index a85890a433f..1e7e847b8ad 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -402,10 +402,11 @@ TargetLowering::TargetLowering(TargetMachine &tm)
          "Fixed size array in TargetLowering is not large enough!");
   // All operations default to being supported.
   memset(OpActions, 0, sizeof(OpActions));
-  memset(LoadXActions, 0, sizeof(LoadXActions));
+  memset(LoadExtActions, 0, sizeof(LoadExtActions));
   memset(TruncStoreActions, 0, sizeof(TruncStoreActions));
   memset(IndexedModeActions, 0, sizeof(IndexedModeActions));
   memset(ConvertActions, 0, sizeof(ConvertActions));
+  memset(CondCodeActions, 0, sizeof(CondCodeActions));
 
   // Set default actions for various operations.
   for (unsigned VT = 0; VT != (unsigned)MVT::LAST_VALUETYPE; ++VT) {
@@ -473,7 +474,8 @@ TargetLowering::TargetLowering(TargetMachine &tm)
   InitCmpLibcallCCs(CmpLibcallCCs);
 
   // Tell Legalize whether the assembler supports DEBUG_LOC.
-  if (!TM.getTargetAsmInfo()->hasDotLocAndDotFile())
+  const TargetAsmInfo *TASM = TM.getTargetAsmInfo();
+  if (!TASM || !TASM->hasDotLocAndDotFile())
     setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
 }
 
@@ -654,6 +656,23 @@ SDValue TargetLowering::getPICJumpTableRelocBase(SDValue Table,
   return Table;
 }
 
+bool
+TargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
+  // Assume that everything is safe in static mode.
+  if (getTargetMachine().getRelocationModel() == Reloc::Static)
+    return true;
+
+  // In dynamic-no-pic mode, assume that known defined values are safe.
+  if (getTargetMachine().getRelocationModel() == Reloc::DynamicNoPIC &&
+      GA &&
+      !GA->getGlobal()->isDeclaration() &&
+      !GA->getGlobal()->mayBeOverridden())
+    return true;
+
+  // Otherwise assume nothing is safe.
+  return false;
+}
+
 //===----------------------------------------------------------------------===//
 //  Optimization Methods
 //===----------------------------------------------------------------------===//
@@ -1744,13 +1763,13 @@ bool TargetLowering::isGAPlusOffset(SDNode *N, GlobalValue* &GA,
     if (isGAPlusOffset(N1.getNode(), GA, Offset)) {
       ConstantSDNode *V = dyn_cast<ConstantSDNode>(N2);
       if (V) {
-        Offset += V->getSignExtended();
+        Offset += V->getSExtValue();
         return true;
       }
     } else if (isGAPlusOffset(N2.getNode(), GA, Offset)) {
       ConstantSDNode *V = dyn_cast<ConstantSDNode>(N1);
       if (V) {
-        Offset += V->getSignExtended();
+        Offset += V->getSExtValue();
         return true;
       }
     }
@@ -1855,6 +1874,7 @@ const char *TargetLowering::LowerXConstraint(MVT ConstraintVT) const{
 /// vector.  If it is invalid, don't add anything to Ops.
 void TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
                                                   char ConstraintLetter,
+                                                  bool hasMemory,
                                                   std::vector<SDValue> &Ops,
                                                   SelectionDAG &DAG) const {
   switch (ConstraintLetter) {
@@ -1959,6 +1979,21 @@ getRegForInlineAsmConstraint(const std::string &Constraint,
 //===----------------------------------------------------------------------===//
 // Constraint Selection.
 
+/// isMatchingInputConstraint - Return true of this is an input operand that is
+/// a matching constraint like "4".
+bool TargetLowering::AsmOperandInfo::isMatchingInputConstraint() const {
+  assert(!ConstraintCode.empty() && "No known constraint!");
+  return isdigit(ConstraintCode[0]);
+}
+
+/// getMatchedOperand - If this is an input matching constraint, this method
+/// returns the output operand it matches.
+unsigned TargetLowering::AsmOperandInfo::getMatchedOperand() const {
+  assert(!ConstraintCode.empty() && "No known constraint!");
+  return atoi(ConstraintCode.c_str());
+}
+
+
 /// getConstraintGenerality - Return an integer indicating how general CT
 /// is.
 static unsigned getConstraintGenerality(TargetLowering::ConstraintType CT) {
@@ -1997,7 +2032,7 @@ static unsigned getConstraintGenerality(TargetLowering::ConstraintType CT) {
 ///     'm' over 'r', for example.
 ///
 static void ChooseConstraint(TargetLowering::AsmOperandInfo &OpInfo,
-                             const TargetLowering &TLI,
+                             bool hasMemory,  const TargetLowering &TLI,
                              SDValue Op, SelectionDAG *DAG) {
   assert(OpInfo.Codes.size() > 1 && "Doesn't have multiple constraint options");
   unsigned BestIdx = 0;
@@ -2017,7 +2052,7 @@ static void ChooseConstraint(TargetLowering::AsmOperandInfo &OpInfo,
       assert(OpInfo.Codes[i].size() == 1 &&
              "Unhandled multi-letter 'other' constraint");
       std::vector<SDValue> ResultOps;
-      TLI.LowerAsmOperandForConstraint(Op, OpInfo.Codes[i][0],
+      TLI.LowerAsmOperandForConstraint(Op, OpInfo.Codes[i][0], hasMemory,
                                        ResultOps, *DAG);
       if (!ResultOps.empty()) {
         BestType = CType;
@@ -2044,6 +2079,7 @@ static void ChooseConstraint(TargetLowering::AsmOperandInfo &OpInfo,
 /// OpInfo.ConstraintCode and OpInfo.ConstraintType.
 void TargetLowering::ComputeConstraintToUse(AsmOperandInfo &OpInfo,
                                             SDValue Op, 
+                                            bool hasMemory,
                                             SelectionDAG *DAG) const {
   assert(!OpInfo.Codes.empty() && "Must have at least one constraint");
   
@@ -2052,7 +2088,7 @@ void TargetLowering::ComputeConstraintToUse(AsmOperandInfo &OpInfo,
     OpInfo.ConstraintCode = OpInfo.Codes[0];
     OpInfo.ConstraintType = getConstraintType(OpInfo.ConstraintCode);
   } else {
-    ChooseConstraint(OpInfo, *this, Op, DAG);
+    ChooseConstraint(OpInfo, hasMemory, *this, Op, DAG);
   }
   
   // 'X' matches anything.
@@ -2296,7 +2332,7 @@ SDValue TargetLowering::BuildSDIV(SDNode *N, SelectionDAG &DAG,
   if (!isTypeLegal(VT) || (VT != MVT::i32 && VT != MVT::i64))
     return SDValue();       // BuildSDIV only operates on i32 or i64
   
-  int64_t d = cast<ConstantSDNode>(N->getOperand(1))->getSignExtended();
+  int64_t d = cast<ConstantSDNode>(N->getOperand(1))->getSExtValue();
   ms magics = (VT == MVT::i32) ? magic32(d) : magic64(d);
   
   // Multiply the numerator (operand 0) by the magic value