Declare the callee saved regs

Remove the hard coded store and load of the link register
Implement ARMFrameInfo

llvm-svn: 29727

1 files changed, 43 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/ARMFrameInfo.h b/llvm/lib/Target/ARM/ARMFrameInfo.h
new file mode 100644
index 00000000000..d25ec9c3f15
--- /dev/null
+++ b/llvm/lib/Target/ARM/ARMFrameInfo.h
@@ -0,0 +1,43 @@
+//===-- ARMTargetFrameInfo.h - Define TargetFrameInfo for ARM ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the "Instituto Nokia de Tecnologia" and
+// is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ARM_FRAMEINFO_H
+#define ARM_FRAMEINFO_H
+
+#include "ARM.h"
+#include "llvm/Target/TargetFrameInfo.h"
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+
+class ARMFrameInfo: public TargetFrameInfo {
+  std::pair<unsigned, int> LR[1];
+
+public:
+  ARMFrameInfo()
+    : TargetFrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0) {
+    LR[0].first = ARM::R14;
+    LR[0].second = -4;
+  }
+
+  const std::pair<unsigned, int> *
+  getCalleeSaveSpillSlots(unsigned &NumEntries) const {
+    NumEntries = 1;
+    return &LR[0];
+  }
+};
+
+} // End llvm namespace
+
+#endif