Fix PR14364.

This removes a const_cast hack from PPCRegisterInfo::hasReservedSpillSlot().
The proper place to save the frame index for the CR spill slot is in the
PPCFunctionInfo object, not the PPCRegisterInfo object.

No new test cases, as this just reimplements existing function.  Existing
tests such as test/CodeGen/PowerPC/crsave.ll are sufficient.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175998 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCMachineFunctionInfo.h

@@ -71,6 +71,9 @@ class PPCFunctionInfo : public MachineFunctionInfo {
   /// register for parameter passing.
   unsigned VarArgsNumFPR;
 
+  /// CRSpillFrameIndex - FrameIndex for CR spill slot for 32-bit SVR4.
+  int CRSpillFrameIndex;
+
 public:
   explicit PPCFunctionInfo(MachineFunction &MF) 
     : FramePointerSaveIndex(0),
@@ -83,7 +86,8 @@ public:
       VarArgsFrameIndex(0),
       VarArgsStackOffset(0),
       VarArgsNumGPR(0),
-      VarArgsNumFPR(0) {}
+      VarArgsNumFPR(0),
+      CRSpillFrameIndex(0) {}
 
   int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
   void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
@@ -125,6 +129,9 @@ public:
 
   unsigned getVarArgsNumFPR() const { return VarArgsNumFPR; }
   void setVarArgsNumFPR(unsigned Num) { VarArgsNumFPR = Num; }
+
+  int getCRSpillFrameIndex() const { return CRSpillFrameIndex; }
+  void setCRSpillFrameIndex(int idx) { CRSpillFrameIndex = idx; }
 };
 
 } // end of namespace llvm