X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FIR%2FFunction.cpp;h=83f71a891627ee63eb41d4a33b302a0b66d66061;hb=f9e44c8bf8deb202e668a045c4e47f4ee312c66f;hp=14435711bb6162cbeb3d295c367f67482bd698a3;hpb=bb5f6229f4a40e24741aef87fef77982696f723f;p=oota-llvm.git

diff --git a/lib/IR/Function.cpp b/lib/IR/Function.cpp
index 14435711bb6..83f71a89162 100644
--- a/lib/IR/Function.cpp
+++ b/lib/IR/Function.cpp
@@ -77,11 +77,17 @@ unsigned Argument::getArgNo() const {
 }
 
 /// hasNonNullAttr - Return true if this argument has the nonnull attribute on
-/// it in its containing function.
+/// it in its containing function. Also returns true if at least one byte is
+/// known to be dereferenceable and the pointer is in addrspace(0).
 bool Argument::hasNonNullAttr() const {
   if (!getType()->isPointerTy()) return false;
-  return getParent()->getAttributes().
-    hasAttribute(getArgNo()+1, Attribute::NonNull);
+  if (getParent()->getAttributes().
+        hasAttribute(getArgNo()+1, Attribute::NonNull))
+    return true;
+  else if (getDereferenceableBytes() > 0 &&
+           getType()->getPointerAddressSpace() == 0)
+    return true;
+  return false;
 }
 
 /// hasByValAttr - Return true if this argument has the byval attribute on it
@@ -113,6 +119,12 @@ unsigned Argument::getParamAlignment() const {
 
 }
 
+uint64_t Argument::getDereferenceableBytes() const {
+  assert(getType()->isPointerTy() &&
+         "Only pointers have dereferenceable bytes");
+  return getParent()->getDereferenceableBytes(getArgNo()+1);
+}
+
 /// hasNestAttr - Return true if this argument has the nest attribute on
 /// it in its containing function.
 bool Argument::hasNestAttr() const {
@@ -154,6 +166,20 @@ bool Argument::hasReturnedAttr() const {
     hasAttribute(getArgNo()+1, Attribute::Returned);
 }
 
+/// hasZExtAttr - Return true if this argument has the zext attribute on it in
+/// its containing function.
+bool Argument::hasZExtAttr() const {
+  return getParent()->getAttributes().
+    hasAttribute(getArgNo()+1, Attribute::ZExt);
+}
+
+/// hasSExtAttr Return true if this argument has the sext attribute on it in its
+/// containing function.
+bool Argument::hasSExtAttr() const {
+  return getParent()->getAttributes().
+    hasAttribute(getArgNo()+1, Attribute::SExt);
+}
+
 /// Return true if this argument has the readonly or readnone attribute on it
 /// in its containing function.
 bool Argument::onlyReadsMemory() const {
@@ -448,7 +474,7 @@ std::string Intrinsic::getName(ID id, ArrayRef<Type*> Tys) {
 ///
 /// NOTE: This must be kept in synch with the copy in TblGen/IntrinsicEmitter!
 enum IIT_Info {
-  // Common values should be encoded with 0-15.
+  // Common values should be encoded with 0-16.
   IIT_Done = 0,
   IIT_I1   = 1,
   IIT_I8   = 2,
@@ -463,23 +489,24 @@ enum IIT_Info {
   IIT_V8   = 11,
   IIT_V16  = 12,
   IIT_V32  = 13,
-  IIT_PTR  = 14,
-  IIT_ARG  = 15,
-
-  // Values from 16+ are only encodable with the inefficient encoding.
-  IIT_MMX  = 16,
-  IIT_METADATA = 17,
-  IIT_EMPTYSTRUCT = 18,
-  IIT_STRUCT2 = 19,
-  IIT_STRUCT3 = 20,
-  IIT_STRUCT4 = 21,
-  IIT_STRUCT5 = 22,
-  IIT_EXTEND_ARG = 23,
-  IIT_TRUNC_ARG = 24,
-  IIT_ANYPTR = 25,
-  IIT_V1   = 26,
-  IIT_VARARG = 27,
-  IIT_HALF_VEC_ARG = 28
+  IIT_V64  = 14,
+  IIT_PTR  = 15,
+  IIT_ARG  = 16,
+
+  // Values from 17+ are only encodable with the inefficient encoding.
+  IIT_MMX  = 17,
+  IIT_METADATA = 18,
+  IIT_EMPTYSTRUCT = 19,
+  IIT_STRUCT2 = 20,
+  IIT_STRUCT3 = 21,
+  IIT_STRUCT4 = 22,
+  IIT_STRUCT5 = 23,
+  IIT_EXTEND_ARG = 24,
+  IIT_TRUNC_ARG = 25,
+  IIT_ANYPTR = 26,
+  IIT_V1   = 27,
+  IIT_VARARG = 28,
+  IIT_HALF_VEC_ARG = 29
 };
 
 
@@ -550,6 +577,10 @@ static void DecodeIITType(unsigned &NextElt, ArrayRef<unsigned char> Infos,
     OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 32));
     DecodeIITType(NextElt, Infos, OutputTable);
     return;
+  case IIT_V64:
+    OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 64));
+    DecodeIITType(NextElt, Infos, OutputTable);
+    return;
   case IIT_PTR:
     OutputTable.push_back(IITDescriptor::get(IITDescriptor::Pointer, 0));
     DecodeIITType(NextElt, Infos, OutputTable);
@@ -666,7 +697,7 @@ static Type *DecodeFixedType(ArrayRef<Intrinsic::IITDescriptor> &Infos,
     assert(D.Struct_NumElements <= 5 && "Can't handle this yet");
     for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
       Elts[i] = DecodeFixedType(Infos, Tys, Context);
-    return StructType::get(Context, ArrayRef<Type*>(Elts,D.Struct_NumElements));
+    return StructType::get(Context, makeArrayRef(Elts,D.Struct_NumElements));
   }
 
   case IITDescriptor::Argument: