LLVM 17.0.0git
Mips16ISelLowering.h
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1//===-- Mips16ISelLowering.h - Mips16 DAG Lowering Interface ----*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Subclass of MipsTargetLowering specialized for mips16.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_MIPS_MIPS16ISELLOWERING_H
14#define LLVM_LIB_TARGET_MIPS_MIPS16ISELLOWERING_H
15
16#include "MipsISelLowering.h"
17
18namespace llvm {
20 public:
22 const MipsSubtarget &STI);
23
24 bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace,
25 Align Alignment,
27 unsigned *Fast) const override;
28
31 MachineBasicBlock *MBB) const override;
32
33 private:
34 bool isEligibleForTailCallOptimization(
35 const CCState &CCInfo, unsigned NextStackOffset,
36 const MipsFunctionInfo &FI) const override;
37
38 void setMips16HardFloatLibCalls();
39
40 unsigned int
41 getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
42
43 const char *getMips16HelperFunction
44 (Type* RetTy, ArgListTy &Args, bool &needHelper) const;
45
46 void
47 getOpndList(SmallVectorImpl<SDValue> &Ops,
48 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
49 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
50 bool IsCallReloc, CallLoweringInfo &CLI, SDValue Callee,
51 SDValue Chain) const override;
52
53 MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr &MI,
54 MachineBasicBlock *BB) const;
55
56 MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
58 MachineBasicBlock *BB) const;
59
60 MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
62 MachineBasicBlock *BB) const;
63
64 MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
66 MachineBasicBlock *BB) const;
67
68 MachineBasicBlock *emitFEXT_T8I8I16_ins(unsigned BtOpc, unsigned CmpiOpc,
69 unsigned CmpiXOpc, bool ImmSigned,
71 MachineBasicBlock *BB) const;
72
73 MachineBasicBlock *emitFEXT_CCRX16_ins(unsigned SltOpc, MachineInstr &MI,
74 MachineBasicBlock *BB) const;
75
76 MachineBasicBlock *emitFEXT_CCRXI16_ins(unsigned SltiOpc, unsigned SltiXOpc,
78 MachineBasicBlock *BB) const;
79 };
80}
81
82#endif
MachineBasicBlock & MBB
amdgpu Simplify well known AMD library false FunctionCallee Callee
return RetTy
IRTranslator LLVM IR MI
const char LLVMTargetMachineRef TM
CCState - This class holds information needed while lowering arguments and return values.
Representation of each machine instruction.
Definition: MachineInstr.h:68
Flags
Flags values. These may be or'd together.
MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr &MI, MachineBasicBlock *MBB) const override
This method should be implemented by targets that mark instructions with the 'usesCustomInserter' fla...
bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace, Align Alignment, MachineMemOperand::Flags Flags, unsigned *Fast) const override
Determine if the target supports unaligned memory accesses.
MipsFunctionInfo - This class is derived from MachineFunction private Mips target-specific informatio...
Unlike LLVM values, Selection DAG nodes may return multiple values as the result of a computation.
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: SmallVector.h:577
std::vector< ArgListEntry > ArgListTy
The instances of the Type class are immutable: once they are created, they are never changed.
Definition: Type.h:45
@ Fast
Attempts to make calls as fast as possible (e.g.
Definition: CallingConv.h:41
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
This struct is a compact representation of a valid (non-zero power of two) alignment.
Definition: Alignment.h:39
Extended Value Type.
Definition: ValueTypes.h:34
This structure contains all information that is necessary for lowering calls.