Re-apply my liveintervalanalysis changes. Now with PR1207 fixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34428 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 19 insertions, 0 deletions

diff --git a/lib/Target/Sparc/SparcRegisterInfo.cpp b/lib/Target/Sparc/SparcRegisterInfo.cpp
index 3cb5e50..dab0b10 100644
--- a/lib/Target/Sparc/SparcRegisterInfo.cpp
+++ b/lib/Target/Sparc/SparcRegisterInfo.cpp
@@ -20,6 +20,7 @@
 #include "llvm/CodeGen/MachineLocation.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Type.h"
+#include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/STLExtras.h"
 using namespace llvm;
 
@@ -116,6 +117,22 @@ const unsigned* SparcRegisterInfo::getCalleeSavedRegs() const {
   return CalleeSavedRegs;
 }
 
+BitVector SparcRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
+  BitVector Reserved(getNumRegs());
+  Reserved.set(SP::G2);
+  Reserved.set(SP::G3);
+  Reserved.set(SP::G4);
+  Reserved.set(SP::O6);
+  Reserved.set(SP::I6);
+  Reserved.set(SP::I7);
+  Reserved.set(SP::G0);
+  Reserved.set(SP::G5);
+  Reserved.set(SP::G6);
+  Reserved.set(SP::G7);
+  return Reserved;
+}
+
+
 const TargetRegisterClass* const*
 SparcRegisterInfo::getCalleeSavedRegClasses() const {
   static const TargetRegisterClass * const CalleeSavedRegClasses[] = { 0 };
diff --git a/lib/Target/Sparc/SparcRegisterInfo.h b/lib/Target/Sparc/SparcRegisterInfo.h
index 6f80339..763156a 100644
--- a/lib/Target/Sparc/SparcRegisterInfo.h
+++ b/lib/Target/Sparc/SparcRegisterInfo.h
@@ -52,6 +52,8 @@ struct SparcRegisterInfo : public SparcGenRegisterInfo {
 
   const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
 
+  BitVector getReservedRegs(const MachineFunction &MF) const;
+
   bool hasFP(const MachineFunction &MF) const;
 
   void eliminateCallFramePseudoInstr(MachineFunction &MF,