CellSPU:

- Ensure that (operation) legalization emits proper FDIV libcall when needed.
- Fix various bugs encountered during llvm-spu-gcc build, along with various
  cleanups.
- Start supporting double precision comparisons for remaining libgcc2 build.
  Discovered interesting DAGCombiner feature, which is currently solved via
  custom lowering (64-bit constants are not legal on CellSPU, but DAGCombiner
  insists on inserting one anyway.)
- Update README.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62664 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/CellSPU/SPUISelLowering.h

@@ -61,7 +61,7 @@ namespace llvm {
     };
   }
 
-  /// Predicates that are used for node matching:
+  //! Utility functions specific to CellSPU-only:
   namespace SPU {
     SDValue get_vec_u18imm(SDNode *N, SelectionDAG &DAG,
                              MVT ValueType);
@@ -78,6 +78,7 @@ namespace llvm {
 
     SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG,
                               const SPUTargetMachine &TM);
+    SDValue LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG);
 
     SDValue getBorrowGenerateShufMask(SelectionDAG &DAG);
     SDValue getCarryGenerateShufMask(SelectionDAG &DAG);