Use an AttrBuilder to generate the correct AttributeSet.

We no longer accept an encoded integer as representing all of the
attributes. Convert this via the AttrBuilder class into an AttributeSet with the
correct representation (an AttributeSetImpl that holds a list of Attribute
objects).

llvm-svn: 173750

1 files changed, 6 insertions, 5 deletions

diff --git a/llvm/include/llvm/IR/Attributes.h b/llvm/include/llvm/IR/Attributes.h
index ba46d205caa..1aa733efbf8 100644
--- a/llvm/include/llvm/IR/Attributes.h
+++ b/llvm/include/llvm/IR/Attributes.h
@@ -461,11 +461,12 @@ Attribute typeIncompatible(Type *Ty);
 /// is a breaking change to bitcode compatibility.
 uint64_t encodeLLVMAttributesForBitcode(AttributeSet Attrs, unsigned Index);
 
-/// \brief This returns an attribute bitset containing the LLVM attributes that
-/// have been decoded from the given integer.  This function must stay in sync
-/// with 'encodeLLVMAttributesForBitcode'.
-Attribute decodeLLVMAttributesForBitcode(LLVMContext &C,
-                                         uint64_t EncodedAttrs);
+/// \brief This fills an AttrBuilder object with the LLVM attributes that have
+/// been decoded from the given integer. This function must stay in sync with
+/// 'encodeLLVMAttributesForBitcode'.
+/// N.B. This should be used only by the bitcode reader!
+void decodeLLVMAttributesForBitcode(LLVMContext &C, AttrBuilder &B,
+                                    uint64_t EncodedAttrs);
 
 } // end AttributeFuncs namespace