From 5114226c1896f250be8881adf67d55a7e54b50fc Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Fri, 29 Mar 2013 19:17:42 +0000
Subject: [PATCH] [mips] Define a function which returns the GPR register
 class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178359 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/Mips16RegisterInfo.cpp | 6 ++++++
 lib/Target/Mips/Mips16RegisterInfo.h   | 2 ++
 lib/Target/Mips/MipsRegisterInfo.h     | 3 +++
 lib/Target/Mips/MipsSERegisterInfo.cpp | 9 +++++++++
 lib/Target/Mips/MipsSERegisterInfo.h   | 2 ++
 5 files changed, 22 insertions(+)

diff --git a/lib/Target/Mips/Mips16RegisterInfo.cpp b/lib/Target/Mips/Mips16RegisterInfo.cpp
index 0ea93689490..6cca2276856 100644
--- a/lib/Target/Mips/Mips16RegisterInfo.cpp
+++ b/lib/Target/Mips/Mips16RegisterInfo.cpp
@@ -72,6 +72,12 @@ bool Mips16RegisterInfo::saveScavengerRegister
   return true;
 }
 
+const TargetRegisterClass *
+Mips16RegisterInfo::intRegClass(unsigned Size) const {
+  assert(Size == 4);
+  return &Mips::CPU16RegsRegClass;
+}
+
 void Mips16RegisterInfo::eliminateFI(MachineBasicBlock::iterator II,
                                      unsigned OpNo, int FrameIndex,
                                      uint64_t StackSize,
diff --git a/lib/Target/Mips/Mips16RegisterInfo.h b/lib/Target/Mips/Mips16RegisterInfo.h
index b8f818a478d..2b3d2b1a4ec 100644
--- a/lib/Target/Mips/Mips16RegisterInfo.h
+++ b/lib/Target/Mips/Mips16RegisterInfo.h
@@ -37,6 +37,8 @@ public:
                                      const TargetRegisterClass *RC,
                                      unsigned Reg) const;
 
+  virtual const TargetRegisterClass *intRegClass(unsigned Size) const;
+
 private:
   virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
                            int FrameIndex, uint64_t StackSize,
diff --git a/lib/Target/Mips/MipsRegisterInfo.h b/lib/Target/Mips/MipsRegisterInfo.h
index 3c210e71bb7..5ed51241391 100644
--- a/lib/Target/Mips/MipsRegisterInfo.h
+++ b/lib/Target/Mips/MipsRegisterInfo.h
@@ -68,6 +68,9 @@ public:
   unsigned getEHExceptionRegister() const;
   unsigned getEHHandlerRegister() const;
 
+  /// \brief Return GPR register class.
+  virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0;
+
 private:
   virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
                            int FrameIndex, uint64_t StackSize,
diff --git a/lib/Target/Mips/MipsSERegisterInfo.cpp b/lib/Target/Mips/MipsSERegisterInfo.cpp
index a39b393e4e0..96967380b29 100644
--- a/lib/Target/Mips/MipsSERegisterInfo.cpp
+++ b/lib/Target/Mips/MipsSERegisterInfo.cpp
@@ -54,6 +54,15 @@ requiresFrameIndexScavenging(const MachineFunction &MF) const {
   return true;
 }
 
+const TargetRegisterClass *
+MipsSERegisterInfo::intRegClass(unsigned Size) const {
+  if (Size == 4)
+    return &Mips::CPURegsRegClass;
+
+  assert(Size == 8);
+  return &Mips::CPU64RegsRegClass;
+}
+
 void MipsSERegisterInfo::eliminateFI(MachineBasicBlock::iterator II,
                                      unsigned OpNo, int FrameIndex,
                                      uint64_t StackSize,
diff --git a/lib/Target/Mips/MipsSERegisterInfo.h b/lib/Target/Mips/MipsSERegisterInfo.h
index f6827e96631..2f7c37bb460 100644
--- a/lib/Target/Mips/MipsSERegisterInfo.h
+++ b/lib/Target/Mips/MipsSERegisterInfo.h
@@ -31,6 +31,8 @@ public:
 
   bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
 
+  virtual const TargetRegisterClass *intRegClass(unsigned Size) const;
+
 private:
   virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
                            int FrameIndex, uint64_t StackSize,
-- 
2.34.1