[llvm-commits] CVS: llvm/include/llvm/Target/MachineFrameInfo.h

[vadve at cs.uiuc.edu]

Changes in directory llvm/include/llvm/Target:

MachineFrameInfo.h updated: 1.4 -> 1.5

---
Log message:

Add method adjustAlignment so that stack slot alignments can be computed
in a target-dependent manner (because of the dang OFFSET in Sparc v9).


---
Diffs of the changes:

Index: llvm/include/llvm/Target/MachineFrameInfo.h
diff -u llvm/include/llvm/Target/MachineFrameInfo.h:1.4 llvm/include/llvm/Target/MachineFrameInfo.h:1.5
--- llvm/include/llvm/Target/MachineFrameInfo.h:1.4	Fri Aug  9 15:07:44 2002
+++ llvm/include/llvm/Target/MachineFrameInfo.h	Mon Sep 16 10:57:43 2002
@@ -19,7 +19,6 @@
 public:
   MachineFrameInfo(const TargetMachine& tgt) : target(tgt) {}
   
-  //
   // These methods provide constant parameters of the frame layout.
   // 
   virtual int  getStackFrameSizeAlignment       () const = 0;
@@ -27,8 +26,15 @@
   virtual int  getNumFixedOutgoingArgs          () const = 0;
   virtual int  getSizeOfEachArgOnStack          () const = 0;
   virtual bool argsOnStackHaveFixedSize         () const = 0;
-  
-  //
+
+  // This method adjusts a stack offset to meet alignment rules of target.
+  // 
+  virtual int  adjustAlignment                  (int unalignedOffset,
+                                                 bool growUp,
+                                                 unsigned int align) const {
+    return unalignedOffset + (growUp? +1:-1)*(unalignedOffset % align);
+  }
+
   // These methods compute offsets using the frame contents for a
   // particular method.  The frame contents are obtained from the
   // MachineCodeInfoForMethod object for the given method.