Changes in directory llvm/lib/Target/ARM:
ARMRegisterInfo.cpp updated: 1.66 -> 1.67
ARMRegisterInfo.h updated: 1.7 -> 1.8
---
Log message:
Added getReservedRegs().
---
Diffs of the changes: (+17 -0)
ARMRegisterInfo.cpp | 15 +++++++++++++++
ARMRegisterInfo.h | 2 ++
2 files changed, 17 insertions(+)
Index: llvm/lib/Target/ARM/ARMRegisterInfo.cpp
diff -u llvm/lib/Target/ARM/ARMRegisterInfo.cpp:1.66
llvm/lib/Target/ARM/ARMRegisterInfo.cpp:1.67
--- llvm/lib/Target/ARM/ARMRegisterInfo.cpp:1.66 Wed Feb 7 15:44:33 2007
+++ llvm/lib/Target/ARM/ARMRegisterInfo.cpp Sat Feb 17 05:06:00 2007
@@ -28,6 +28,7 @@
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
+#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/STLExtras.h"
#include <algorithm>
@@ -297,6 +298,20 @@
return CalleeSavedRegClasses;
}
+BitVector ARMRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
+ BitVector Reserved(getNumRegs());
+ Reserved.set(ARM::SP);
+ if (STI.isTargetDarwin() || hasFP(MF))
+ Reserved.set(FramePtr);
+ // Some targets reserve R9.
+ if (STI.isR9Reserved())
+ Reserved.set(ARM::R9);
+ // At PEI time, if LR is used, it will be spilled upon entry.
+ if (MF.getUsedPhysregs() && !MF.isPhysRegUsed((unsigned)ARM::LR))
+ Reserved.set(ARM::LR);
+ return Reserved;
+}
+
/// hasFP - Return true if the specified function should have a dedicated frame
/// pointer register. This is true if the function has variable sized allocas
/// or if frame pointer elimination is disabled.
Index: llvm/lib/Target/ARM/ARMRegisterInfo.h
diff -u llvm/lib/Target/ARM/ARMRegisterInfo.h:1.7
llvm/lib/Target/ARM/ARMRegisterInfo.h:1.8
--- llvm/lib/Target/ARM/ARMRegisterInfo.h:1.7 Wed Jan 24 21:07:27 2007
+++ llvm/lib/Target/ARM/ARMRegisterInfo.h Sat Feb 17 05:06:00 2007
@@ -67,6 +67,8 @@
const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
+ BitVector getReservedRegs(const MachineFunction &MF) const;
+
bool hasFP(const MachineFunction &MF) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
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