d3c544aa6e
Summary:
We use `variable_ops` in the tablegen defs to denote the list of
branch targets in `br_table`, but unlike other uses of `variable_ops`
(e.g. call) the these branch targets need to actually be encoded in the
instruction. The existing tables for `variable_ops` cause not operands
to be accepted by the assembly matcher.
Following the example of ARM:
2cc0a7da87/lib/Target/ARM/ARMInstrInfo.td (L550-L555)
we introduce a new operand type to capture this list, and we use the
same {} syntax as ARM as well to differentiate them from regular
integer operands.
Also removed definition and use of TSFlags in tablegen defs, since
`br_table` now has a non-variable_ops immediate operand, so the
previous logic of only the variable_ops arguments being labels didn't
make sense anymore.
Reviewers: dschuff, aheejin, sunfish
Subscribers: javed.absar, sbc100, jgravelle-google, kristof.beyls, llvm-commits
Differential Revision: https://reviews.llvm.org/D55401
llvm-svn: 349405
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
// WebAssemblyInstPrinter.h - Print wasm MCInst to assembly syntax -*- C++ -*-//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// This class prints an WebAssembly MCInst to wasm file syntax.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
|
|
#define LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
|
|
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/BinaryFormat/Wasm.h"
|
|
#include "llvm/MC/MCInstPrinter.h"
|
|
#include "llvm/Support/MachineValueType.h"
|
|
|
|
namespace llvm {
|
|
|
|
class MCSubtargetInfo;
|
|
|
|
class WebAssemblyInstPrinter final : public MCInstPrinter {
|
|
uint64_t ControlFlowCounter = 0;
|
|
uint64_t EHPadStackCounter = 0;
|
|
SmallVector<std::pair<uint64_t, bool>, 4> ControlFlowStack;
|
|
SmallVector<uint64_t, 4> EHPadStack;
|
|
|
|
enum EHInstKind { TRY, CATCH, END_TRY };
|
|
EHInstKind LastSeenEHInst = END_TRY;
|
|
|
|
public:
|
|
WebAssemblyInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
|
|
const MCRegisterInfo &MRI);
|
|
|
|
void printRegName(raw_ostream &OS, unsigned RegNo) const override;
|
|
void printInst(const MCInst *MI, raw_ostream &OS, StringRef Annot,
|
|
const MCSubtargetInfo &STI) override;
|
|
|
|
// Used by tblegen code.
|
|
void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
|
|
void printBrList(const MCInst *MI, unsigned OpNo, raw_ostream &O);
|
|
void printWebAssemblyP2AlignOperand(const MCInst *MI, unsigned OpNo,
|
|
raw_ostream &O);
|
|
void printWebAssemblySignatureOperand(const MCInst *MI, unsigned OpNo,
|
|
raw_ostream &O);
|
|
|
|
// Autogenerated by tblgen.
|
|
void printInstruction(const MCInst *MI, raw_ostream &O);
|
|
static const char *getRegisterName(unsigned RegNo);
|
|
};
|
|
|
|
namespace WebAssembly {
|
|
|
|
const char *TypeToString(wasm::ValType Ty);
|
|
|
|
} // end namespace WebAssembly
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|