Changes in directory llvm/include/llvm/CodeGen:
MachineFrameInfo.h updated: 1.18 -> 1.19
---
Log message:
Consolidate callee saved register information so that it can me used by debug
information and exception handling.
---
Diffs of the changes: (+32 -0)
MachineFrameInfo.h | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+)
Index: llvm/include/llvm/CodeGen/MachineFrameInfo.h
diff -u llvm/include/llvm/CodeGen/MachineFrameInfo.h:1.18
llvm/include/llvm/CodeGen/MachineFrameInfo.h:1.19
--- llvm/include/llvm/CodeGen/MachineFrameInfo.h:1.18 Tue May 23 10:32:15 2006
+++ llvm/include/llvm/CodeGen/MachineFrameInfo.h Fri Aug 25 14:45:51 2006
@@ -20,6 +20,28 @@
class MachineDebugInfo;
class MachineFunction;
+/// The CalleeSavedInfo class tracks the information need to locate where a
+/// callee saved register in the current frame.
+class CalleeSavedInfo {
+
+private:
+ unsigned Reg;
+ const TargetRegisterClass *RegClass;
+ int FrameIdx;
+
+public:
+ CalleeSavedInfo(unsigned R, const TargetRegisterClass *RC, int FI = 0)
+ : Reg(R)
+ , RegClass(RC)
+ , FrameIdx(FI)
+ {}
+
+ // Accessors.
+ unsigned getReg() const { return Reg; }
+ const TargetRegisterClass *getRegClass() const { return RegClass; }
+ int getFrameIdx() const { return FrameIdx; }
+ void setFrameIdx(int FI) { FrameIdx = FI; }
+};
/// The MachineFrameInfo class represents an abstract stack frame until
/// prolog/epilog code is inserted. This class is key to allowing stack frame
@@ -111,6 +133,12 @@
///
unsigned MaxCallFrameSize;
+ /// CSInfo - The prolog/epilog code inserter fills in this vector with each
+ /// callee saved register saved in the frame. Beyond it's use by the prolog/
+ /// epilog code inserter, this data used for debug info and exception
+ /// handling.
+ std::vector<CalleeSavedInfo> CSInfo;
+
/// DebugInfo - This field is set (via setMachineDebugInfo) by a debug info
/// consumer (ex. DwarfWriter) to indicate that frame layout information
/// should be acquired. Typically, it's the responsibility of the target's
@@ -242,6 +270,10 @@
Objects.push_back(StackObject(0, 1, -1));
return Objects.size()-NumFixedObjects-1;
}
+
+ /// getCalleeSavedInfo - Returns a reference to call saved info vector for
the
+ /// current function.
+ std::vector<CalleeSavedInfo> &getCalleeSavedInfo() { return CSInfo; }
/// getMachineDebugInfo - Used by a prologue/epilogue emitter (MRegisterInfo)
/// to provide frame layout information.
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