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e359626e4c
a) Move the replacement level decision to the target machine. b) Create additional subtargets at the TargetMachine level to cache and make replacement easy. c) Make the mips16 features obvious. d) Remove the override logic as it no longer does anything. e) Have MipsModuleDAGToDAGISel take only the target machine. f) Have the constant islands pass grab the current subtarget from the MachineFunction (via the TargetMachine) instead of caching it. g) Unconditionally initialize TLOF. h) Remove the old complicated subtarget based resetting and replace it with simple conditionals. llvm-svn: 213430
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
//===---- MipsModuleISelDAGToDAG.h - Change Subtarget --------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a pass used to change the subtarget for the
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// Mips Instruction selector.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MIPSMODULEISELDAGTODAG_H
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#define MIPSMODULEISELDAGTODAG_H
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#include "Mips.h"
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#include "MipsSubtarget.h"
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#include "MipsTargetMachine.h"
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#include "llvm/CodeGen/SelectionDAGISel.h"
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//===----------------------------------------------------------------------===//
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// Instruction Selector Implementation
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// MipsModuleDAGToDAGISel - MIPS specific code to select MIPS machine
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// instructions for SelectionDAG operations.
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//===----------------------------------------------------------------------===//
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namespace llvm {
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class MipsModuleDAGToDAGISel : public MachineFunctionPass {
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public:
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static char ID;
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explicit MipsModuleDAGToDAGISel(MipsTargetMachine &TM_)
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: MachineFunctionPass(ID), TM(TM_) {}
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// Pass Name
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const char *getPassName() const override {
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return "MIPS DAG->DAG Pattern Instruction Selection";
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}
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bool runOnMachineFunction(MachineFunction &MF) override;
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protected:
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MipsTargetMachine &TM;
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};
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/// createMipsISelDag - This pass converts a legalized DAG into a
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/// MIPS-specific DAG, ready for instruction scheduling.
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FunctionPass *createMipsModuleISelDag(MipsTargetMachine &TM);
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}
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#endif
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