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Summary: This patch renames functions that takes or returns alignment as log2, this patch will help with the transition to llvm::Align. The renaming makes it explicit that we deal with log(alignment) instead of a power of two alignment. A few renames uncovered dubious assignments: - `MirParser`/`MirPrinter` was expecting powers of two but `MachineFunction` and `MachineBasicBlock` were using deal with log2(align). This patch fixes it and updates the documentation. - `MachineBlockPlacement` exposes two flags (`align-all-blocks` and `align-all-nofallthru-blocks`) supposedly interpreted as power of two alignments, internally these values are interpreted as log2(align). This patch updates the documentation, - `MachineFunctionexposes` exposes `align-all-functions` also interpreted as power of two alignment, internally this value is interpreted as log2(align). This patch updates the documentation, Reviewers: lattner, thegameg, courbet Subscribers: dschuff, arsenm, jyknight, dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, javed.absar, hiraditya, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, dexonsmith, PkmX, jocewei, jsji, Jim, s.egerton, llvm-commits, courbet Tags: #llvm Differential Revision: https://reviews.llvm.org/D65945 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@371045 91177308-0d34-0410-b5e6-96231b3b80d8
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
//===- ARCMachineFunctionInfo.h - ARC machine function info -----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares ARC-specific per-machine-function information.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
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#define LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
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#include "llvm/CodeGen/MachineFunction.h"
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#include <vector>
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namespace llvm {
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/// ARCFunctionInfo - This class is derived from MachineFunction private
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/// ARC target-specific information for each MachineFunction.
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class ARCFunctionInfo : public MachineFunctionInfo {
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virtual void anchor();
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bool ReturnStackOffsetSet;
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int VarArgsFrameIndex;
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unsigned ReturnStackOffset;
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public:
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ARCFunctionInfo()
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: ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
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ReturnStackOffset(-1U), MaxCallStackReq(0) {}
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explicit ARCFunctionInfo(MachineFunction &MF)
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: ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
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ReturnStackOffset(-1U), MaxCallStackReq(0) {
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// Functions are 4-byte (2**2) aligned.
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MF.setLogAlignment(2);
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}
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~ARCFunctionInfo() {}
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void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
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int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
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void setReturnStackOffset(unsigned value) {
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assert(!ReturnStackOffsetSet && "Return stack offset set twice");
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ReturnStackOffset = value;
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ReturnStackOffsetSet = true;
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}
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unsigned getReturnStackOffset() const {
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assert(ReturnStackOffsetSet && "Return stack offset not set");
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return ReturnStackOffset;
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}
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unsigned MaxCallStackReq;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
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