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, 4 insertions, 9 deletions

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 2e1a5125fe9..ca299c007c6 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -464,15 +464,10 @@ bool BitcodeReader::ParseAttributeBlock() {
         return Error("Invalid ENTRY record");
 
       for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
-        Attribute ReconstitutedAttr =
-          AttributeFuncs::decodeLLVMAttributesForBitcode(Context, Record[i+1]);
-        Record[i+1] = ReconstitutedAttr.Raw();
-      }
-
-      for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
-        AttrBuilder B(Record[i+1]);
-        if (B.hasAttributes())
-          Attrs.push_back(AttributeSet::get(Context, Record[i], B));
+        AttrBuilder B;
+        AttributeFuncs::decodeLLVMAttributesForBitcode(Context, B,
+                                                       Record[i+1]);
+        Attrs.push_back(AttributeSet::get(Context, Record[i], B));
       }
 
       MAttributes.push_back(AttributeSet::get(Context, Attrs));