forked from OSchip/llvm-project
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
//===-- X86.cpp --------------------------------------------------*- C++-*-===//
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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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#include "X86.h"
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namespace exegesis {
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static llvm::Error makeError(llvm::Twine Msg) {
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return llvm::make_error<llvm::StringError>(Msg,
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llvm::inconvertibleErrorCode());
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}
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X86Filter::~X86Filter() = default;
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// Test whether we can generate a snippet for this instruction.
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llvm::Error X86Filter::shouldRun(const LLVMState &State,
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const unsigned Opcode) const {
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const auto &InstrInfo = State.getInstrInfo();
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const llvm::MCInstrDesc &InstrDesc = InstrInfo.get(Opcode);
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if (InstrDesc.isBranch() || InstrDesc.isIndirectBranch())
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return makeError("Unsupported opcode: isBranch/isIndirectBranch");
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if (InstrDesc.isCall() || InstrDesc.isReturn())
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return makeError("Unsupported opcode: isCall/isReturn");
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const auto OpcodeName = InstrInfo.getName(Opcode);
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if (OpcodeName.startswith("POPF") || OpcodeName.startswith("PUSHF") ||
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OpcodeName.startswith("ADJCALLSTACK")) {
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return makeError("Unsupported opcode: Push/Pop/AdjCallStack");
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}
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return llvm::ErrorSuccess();
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}
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} // namespace exegesis
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