diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCFrameLowering.h')
| -rw-r--r-- | lib/Target/PowerPC/PPCFrameLowering.h | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/lib/Target/PowerPC/PPCFrameLowering.h b/lib/Target/PowerPC/PPCFrameLowering.h index 69bd1484d6e5..d116e9fd22e1 100644 --- a/lib/Target/PowerPC/PPCFrameLowering.h +++ b/lib/Target/PowerPC/PPCFrameLowering.h @@ -1,9 +1,8 @@ //===-- PPCFrameLowering.h - Define frame lowering for PowerPC --*- C++ -*-===// // -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // @@ -13,7 +12,6 @@ #ifndef LLVM_LIB_TARGET_POWERPC_PPCFRAMELOWERING_H #define LLVM_LIB_TARGET_POWERPC_PPCFRAMELOWERING_H -#include "PPC.h" #include "llvm/ADT/STLExtras.h" #include "llvm/CodeGen/TargetFrameLowering.h" #include "llvm/Target/TargetMachine.h" @@ -73,12 +71,29 @@ class PPCFrameLowering: public TargetFrameLowering { */ void createTailCallBranchInstr(MachineBasicBlock &MBB) const; + /** + * Check if the conditions are correct to allow for the stack update + * to be moved past the CSR save/restore code. + */ + bool stackUpdateCanBeMoved(MachineFunction &MF) const; + public: PPCFrameLowering(const PPCSubtarget &STI); - unsigned determineFrameLayout(MachineFunction &MF, - bool UpdateMF = true, - bool UseEstimate = false) const; + /** + * Determine the frame layout and update the machine function. + */ + unsigned determineFrameLayoutAndUpdate(MachineFunction &MF, + bool UseEstimate = false) const; + + /** + * Determine the frame layout but do not update the machine function. + * The MachineFunction object can be const in this case as it is not + * modified. + */ + unsigned determineFrameLayout(const MachineFunction &MF, + bool UseEstimate = false, + unsigned *NewMaxCallFrameSize = nullptr) const; /// emitProlog/emitEpilog - These methods insert prolog and epilog code into /// the function. |