X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FIR%2FFunction.cpp;h=f1fe6604333462a01f5b483a1243404f5212a82f;hb=0cccab7515080b5a9b3efd23ee19343e05fa4453;hp=de8e66f1bca0f2c96ac8776d126a0b0adda82493;hpb=834384bf5bd3c104e352d3ef4956541f5932529c;p=oota-llvm.git

diff --git a/lib/IR/Function.cpp b/lib/IR/Function.cpp
index de8e66f1bca..f1fe6604333 100644
--- a/lib/IR/Function.cpp
+++ b/lib/IR/Function.cpp
@@ -76,6 +76,20 @@ unsigned Argument::getArgNo() const {
   return ArgIdx;
 }
 
+/// hasNonNullAttr - Return true if this argument has the nonnull attribute on
+/// 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;
+  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
 /// in its containing function.
 bool Argument::hasByValAttr() const {
@@ -105,6 +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 {
@@ -146,6 +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 {
@@ -727,6 +761,11 @@ Function *Intrinsic::getDeclaration(Module *M, ID id, ArrayRef<Type*> Tys) {
 #include "llvm/IR/Intrinsics.gen"
 #undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
 
+// This defines the "Intrinsic::getIntrinsicForMSBuiltin()" method.
+#define GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
+
 /// hasAddressTaken - returns true if there are any uses of this function
 /// other than direct calls or invokes to it.
 bool Function::hasAddressTaken(const User* *PutOffender) const {