1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
//===-- VEMCInstLower.cpp - Convert VE MachineInstr to MCInst -------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file contains code to lower VE MachineInstrs to their corresponding
// MCInst records.
//
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/VEMCExpr.h"
#include "VE.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/IR/Mangler.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
using namespace llvm;
static MCOperand LowerSymbolOperand(const MachineInstr *MI,
const MachineOperand &MO,
const MCSymbol *Symbol, AsmPrinter &AP) {
VEMCExpr::VariantKind Kind = (VEMCExpr::VariantKind)MO.getTargetFlags();
const MCExpr *Expr = MCSymbolRefExpr::create(Symbol, AP.OutContext);
// Add offset iff MO is not jump table info or machine basic block.
if (!MO.isJTI() && !MO.isMBB() && MO.getOffset())
Expr = MCBinaryExpr::createAdd(
Expr, MCConstantExpr::create(MO.getOffset(), AP.OutContext),
AP.OutContext);
Expr = VEMCExpr::create(Kind, Expr, AP.OutContext);
return MCOperand::createExpr(Expr);
}
static MCOperand LowerOperand(const MachineInstr *MI, const MachineOperand &MO,
AsmPrinter &AP) {
switch (MO.getType()) {
default:
report_fatal_error("unsupported operand type");
case MachineOperand::MO_Register:
if (MO.isImplicit())
break;
return MCOperand::createReg(MO.getReg());
case MachineOperand::MO_ExternalSymbol:
return LowerSymbolOperand(
MI, MO, AP.GetExternalSymbolSymbol(MO.getSymbolName()), AP);
case MachineOperand::MO_GlobalAddress:
return LowerSymbolOperand(MI, MO, AP.getSymbol(MO.getGlobal()), AP);
case MachineOperand::MO_Immediate:
return MCOperand::createImm(MO.getImm());
case MachineOperand::MO_MachineBasicBlock:
return LowerSymbolOperand(MI, MO, MO.getMBB()->getSymbol(), AP);
case MachineOperand::MO_RegisterMask:
break;
}
return MCOperand();
}
void llvm::LowerVEMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
AsmPrinter &AP) {
OutMI.setOpcode(MI->getOpcode());
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
MCOperand MCOp = LowerOperand(MI, MO, AP);
if (MCOp.isValid())
OutMI.addOperand(MCOp);
}
}
|
