Major calling convention code refactoring.

Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.

This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.

This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78142 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/Target/Mips/MipsMachineFunction.h b/lib/Target/Mips/MipsMachineFunction.h
index ac3cdfd..949c78a 100644
--- a/lib/Target/Mips/MipsMachineFunction.h
+++ b/lib/Target/Mips/MipsMachineFunction.h
@@ -57,7 +57,7 @@ private:
   /// to be used on emitPrologue and processFunctionBeforeFrameFinalized.
   MipsFIHolder GPHolder;
 
-  /// On LowerFORMAL_ARGUMENTS the stack size is unknown, so the Stack 
+  /// On LowerFormalArguments the stack size is unknown, so the Stack
   /// Pointer Offset calculation of "not in register arguments" must be 
   /// postponed to emitPrologue. 
   SmallVector<MipsFIHolder, 16> FnLoadArgs;
@@ -65,7 +65,7 @@ private:
 
   // When VarArgs, we must write registers back to caller stack, preserving 
   // on register arguments. Since the stack size is unknown on 
-  // LowerFORMAL_ARGUMENTS, the Stack Pointer Offset calculation must be
+  // LowerFormalArguments, the Stack Pointer Offset calculation must be
   // postponed to emitPrologue. 
   SmallVector<MipsFIHolder, 4> FnStoreVarArgs;
   bool HasStoreVarArgs;