From 08b088dbbe7716039088930e4f0a25c497f64546 Mon Sep 17 00:00:00 2001
From: Anna Zaks <ganna@apple.com>
Date: Fri, 15 Feb 2013 04:15:55 +0000
Subject: [PATCH] Revert "Simplify the attributes '<' comparison function."

This reverts commit 82c101153fe7b35bce48781fab038e1b8f31a7bd.

llvm-svn: 175250
---
 llvm/lib/IR/Attributes.cpp | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/llvm/lib/IR/Attributes.cpp b/llvm/lib/IR/Attributes.cpp
index 629679c..3de304e 100644
--- a/llvm/lib/IR/Attributes.cpp
+++ b/llvm/lib/IR/Attributes.cpp
@@ -332,23 +332,25 @@ StringRef AttributeImpl::getValueAsString() const {
 bool AttributeImpl::operator<(const AttributeImpl &AI) const {
   // This sorts the attributes with Attribute::AttrKinds coming first (sorted
   // relative to their enum value) and then strings.
-  if (isEnumAttribute()) {
-    if (AI.isEnumAttribute()) return getKindAsEnum() < AI.getKindAsEnum();
-    if (AI.isAlignAttribute()) return true;
-    if (AI.isStringAttribute()) return true;
-  }
+  if (isEnumAttribute())
+    if (AI.isAlignAttribute() || AI.isEnumAttribute())
+      return getKindAsEnum() < AI.getKindAsEnum();
 
   if (isAlignAttribute()) {
-    if (AI.isEnumAttribute()) return false;
-    if (AI.isAlignAttribute()) return getValueAsInt() < AI.getValueAsInt();
-    if (AI.isStringAttribute()) return true;
+    if (!AI.isStringAttribute() && getKindAsEnum() < AI.getKindAsEnum())
+      return true;
+    if (AI.isAlignAttribute())
+      return getValueAsInt() < AI.getValueAsInt();
+  }
+
+  if (isStringAttribute()) {
+    if (!AI.isStringAttribute()) return false;
+    if (getKindAsString() < AI.getKindAsString()) return true;
+    if (getKindAsString() == AI.getKindAsString())
+      return getValueAsString() < AI.getValueAsString();
   }
 
-  if (AI.isEnumAttribute()) return false;
-  if (AI.isAlignAttribute()) return false;
-  if (getKindAsString() == AI.getKindAsString())
-    return getValueAsString() < AI.getValueAsString();
-  return getKindAsString() < AI.getKindAsString();
+  return false;
 }
 
 uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
-- 
2.7.4