finished my pass through all the 2.9 commits, now to make this intelligible

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128955 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ReleaseNotes.html

@@ -60,18 +60,14 @@ current one.  To see the release notes for a specific release, please see the
 <a href="http://llvm.org/releases/">releases page</a>.</p>
 
 </div>
-
-<!--
-Almost dead code.
-  lib/Transforms/IPO/MergeFunctions.cpp => consider for 3.0.
--->
- 
    
-<!-- Features that need text if they're finished for 3.0:
+<!-- Features that need text if they're finished for 3.1:
+  ARM EHABI
   combiner-aa?
   strong phi elim
   loop dependence analysis
   CorrelatedValuePropagation
+  lib/Transforms/IPO/MergeFunctions.cpp => consider for 3.1.
  -->
  
 <!-- *********************************************************************** -->
@@ -331,8 +327,9 @@ MC Assembler support for .file and .loc.
   
 inline asm multiple alternative constraint support.
   
-LoopIdiom: memset/memcpy formation.  Build with -ffreestanding or -fno-builtin
-  if your memcpy is being compiled into infinite recursion.
+LoopIdiom: memset/memcpy formation and memset_pattern on darwin.  Build with
+  -ffreestanding or -fno-builtin if your memcpy is being compiled into infinite
+  recursion.
   
 
 TargetLibraryInfo
@@ -351,7 +348,7 @@ LoopInstSimplify pass.
 
 - DIBuilder provides simpler interface for front ends like Clang to encode debug info in LLVM IR.
   - This interface hides implementation details (e.g. DIDerivedType, existence of compile unit etc..) that any front end should not know about.
-  For example,
+  For example, DIFactory DebugFactory;
   Ty = DebugFactory.CreateDerivedType(DW_TAG_volatile_type,
   findRegion(TYPE_CONTEXT(type)),
   StringRef(),
@@ -364,6 +361,7 @@ LoopInstSimplify pass.
   MainTy);
   can be replaced by
   DbgTy = DBuilder.createQualifiedType(DW_TAG_volatile_type, MainTy); 
+DIFactory is gone now.
   
 PPC: Switched to MCInstPrinter, and MCCodeEmitter.  Ready to implement support
   for directly writing out mach-o object files, but noone seems interested.
@@ -372,6 +370,9 @@ ARM: Improved code generation for Cortex-A8 and Cortex-A9 CPUs.
   
 Scheduler now models operand latency and pipeline forwarding.
   
+Can optimize printf to iprintf when no floating point is used, for embedded
+  targets with smaller iprintf implementation.
+  
 error_code + libsystem + PathV2 changes
   The system_error header from C++0x was added.
   * Use if (error_code ec = function()) to check for error conditions
@@ -407,6 +408,7 @@ tblgen support for assembler aliases: <a
   href="CodeGenerator.html#na_instparsing">MnemonicAlias and InstAlias</a>
   
 LoopIndexSplit pass was removed, unmaintained.
+LiveValues, SimplifyHalfPowrLibCalls, and GEPSplitter were removed.
   
 include/llvm/System merged into include/llvm/Support.
  
@@ -460,12 +462,29 @@ Removed the PartialSpecialization pass, it was unmaintained and buggy.
 SPARC: Many improvements, including using the Y registers for multiplications
   and addition of a simple delay slot filler.
   
+  
+udiv, ashr, lshr, shl now have exact and nuw/nsw bits: PR8862 / LangRef.html
+  
+lib/Object and llvm-objdump
+
+  
+  Target Independent Code Gen:
+  The pre-register-allocation (preRA) instruction scheduler models register pressure
+  much more accurately in some cases. This allows the adoption of more
+  aggressive scheduling heuristics.
+  
+  The X86 backend has adopted a new preRA scheduling
+  mode, "list-ilp", to shorten the height of instruction schedules
+  without inducing register spills.
+  
+  The ARM backend preRA scheduler now models machine resources at cycle
+  granularity. This allows the scheduler to both accurately model
+  instruction latency and avoid overcommitting functional units.
+
+  
 </pre></li>
 </ul>
   
-Still todo: [110117-110228]
-
-  
 </div>
 
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