[PowerPC] Add getCRSaveOffset to improve readability. [NFC]
In preperation for AIX support in FrameLowering: replace a number of literal
'8' that represent the stack offset of the condition register save area with
a member in PPCFrameLowering.
Patch by Chris Bowler.
llvm-svn: 367111
diff --git a/llvm/lib/Target/PowerPC/PPCFrameLowering.h b/llvm/lib/Target/PowerPC/PPCFrameLowering.h
index d116e9f..7783a05 100644
--- a/llvm/lib/Target/PowerPC/PPCFrameLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCFrameLowering.h
@@ -26,6 +26,7 @@
const unsigned FramePointerSaveOffset;
const unsigned LinkageSize;
const unsigned BasePointerSaveOffset;
+ const unsigned CRSaveOffset;
/**
* Find register[s] that can be used in function prologue and epilogue
@@ -152,6 +153,10 @@
/// base pointer.
unsigned getBasePointerSaveOffset() const { return BasePointerSaveOffset; }
+ /// getCRSaveOffset - Return the previous frame offset to save the
+ /// CR register.
+ unsigned getCRSaveOffset() const { return CRSaveOffset; }
+
/// getLinkageSize - Return the size of the PowerPC ABI linkage area.
///
unsigned getLinkageSize() const { return LinkageSize; }