[Sparc] Add support for leaf functions in sparc backend.

llvm-svn: 182822

1 files changed, 10 insertions, 2 deletions

diff --git a/llvm/lib/Target/Sparc/SparcMachineFunctionInfo.h b/llvm/lib/Target/Sparc/SparcMachineFunctionInfo.h
index 90c27a4459a..3783c16d992 100644
--- a/llvm/lib/Target/Sparc/SparcMachineFunctionInfo.h
+++ b/llvm/lib/Target/Sparc/SparcMachineFunctionInfo.h
@@ -28,11 +28,16 @@ namespace llvm {
     /// SRetReturnReg - Holds the virtual register into which the sret
     /// argument is passed.
     unsigned SRetReturnReg;
+
+    /// IsLeafProc - True if the function is a leaf procedure.
+    bool IsLeafProc;
   public:
     SparcMachineFunctionInfo()
-      : GlobalBaseReg(0), VarArgsFrameOffset(0), SRetReturnReg(0) {}
+      : GlobalBaseReg(0), VarArgsFrameOffset(0), SRetReturnReg(0),
+        IsLeafProc(false) {}
     explicit SparcMachineFunctionInfo(MachineFunction &MF)
-      : GlobalBaseReg(0), VarArgsFrameOffset(0), SRetReturnReg(0) {}
+      : GlobalBaseReg(0), VarArgsFrameOffset(0), SRetReturnReg(0),
+        IsLeafProc(false) {}
 
     unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
     void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
@@ -42,6 +47,9 @@ namespace llvm {
 
     unsigned getSRetReturnReg() const { return SRetReturnReg; }
     void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
+
+    void setLeafProc(bool rhs) { IsLeafProc = rhs; }
+    bool isLeafProc() const { return IsLeafProc; }
   };
 }