X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FSelectionDAG%2FTargetLowering.cpp;h=1e7e847b8adba831b856087144f6a0fb927bf946;hb=ee4c619b3b28a42078fc8033e5dccd42fc6edd42;hp=d60ae2eacff37ade9bd57537b1a25af451a6ecff;hpb=0329466b6b4927f4e6f5d144891fef06a027fec5;p=oota-llvm.git

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index d60ae2eacff..1e7e847b8ad 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -406,6 +406,7 @@ TargetLowering::TargetLowering(TargetMachine &tm)
   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) {
@@ -655,6 +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
 //===----------------------------------------------------------------------===//
@@ -1961,6 +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) {