Port of all JIT changes for .NET Framework 4.6.1 changes

    http://blogs.msdn.com/b/dotnet/archive/2015/11/30/net-framework-4-6-1-is-now-available.aspx

.NET Framework list of changes in 4.6.1
    https://github.com/Microsoft/dotnet/blob/master/releases/net461/dotnet461-changes.md

Additional changes including
-    Working ARM64 JIT compiler
-    Additional JIT Optimizations
     o    Tail call recursion optimization
     o    Array length tracking optimization
     o    CSE for widening casts
     o    Smaller encoding for RIP relative and absolute addresses in addressing modes
     o    Tracked Local Variable increased to 512
     o    Improved handling of Intrinsics System.GetType()
     o    Improved handling of Math intrinsics
-    Work for the X86 Ryu-JIT compiler

[tfs-changeset: 1557101]

1 files changed, 12 insertions, 6 deletions

diff --git a/src/jit/codegen.h b/src/jit/codegen.h
index 9e7fd3ef9c..79ecc295d7 100644
--- a/src/jit/codegen.h
+++ b/src/jit/codegen.h
@@ -102,6 +102,10 @@ private:
     // branch to on compare condition being true.  'false' label corresponds to the target to
     // branch to on condition being false.
     static void genJumpKindsForTree(GenTreePtr cmpTree, emitJumpKind jmpKind[2], bool jmpToTrueLabel[2]);
+#if !defined(_TARGET_64BIT_)
+    static void genJumpKindsForTreeLongHi(GenTreePtr cmpTree, emitJumpKind jmpKind[2], bool jmpToTrueLabel[2]);
+    static void genJumpKindsForTreeLongLo(GenTreePtr cmpTree, emitJumpKind jmpKind[2], bool jmpToTrueLabel[2]);
+#endif //!defined(_TARGET_64BIT_)
 #endif // _TARGET_XARCH_
 
     static bool         genShouldRoundFP();
@@ -398,13 +402,8 @@ protected:
 
     FuncletFrameInfoDsc genFuncletInfo;
 
-#elif defined(_TARGET_XARCH_) && !FEATURE_STACK_FP_X87
+#elif defined(_TARGET_AMD64_)
 
-    // Save/Restore callee saved float regs to stack
-    void                genPreserveCalleeSavedFltRegs(unsigned lclFrameSize);
-    void                genRestoreCalleeSavedFltRegs(unsigned lclFrameSize);
-
-#ifdef _TARGET_AMD64_
     // A set of information that is used by funclet prolog and epilog generation. It is collected once, before
     // funclet prologs and epilogs are generated, and used by all funclet prologs and epilogs, which must all be the same.
     struct FuncletFrameInfoDsc
@@ -415,8 +414,15 @@ protected:
     };
 
     FuncletFrameInfoDsc genFuncletInfo;
+
 #endif // _TARGET_AMD64_
 
+#if defined(_TARGET_XARCH_) && !FEATURE_STACK_FP_X87
+
+    // Save/Restore callee saved float regs to stack
+    void                genPreserveCalleeSavedFltRegs(unsigned lclFrameSize);
+    void                genRestoreCalleeSavedFltRegs(unsigned lclFrameSize);
+
 #endif // _TARGET_XARCH_ && FEATURE_STACK_FP_X87
 
 #if !FEATURE_STACK_FP_X87