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author | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
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committer | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
commit | 6ffe9e53658409f212834330e13564e4952558f6 (patch) | |
tree | 85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp | |
parent | 726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff) | |
download | ydb-6ffe9e53658409f212834330e13564e4952558f6.tar.gz |
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp')
-rw-r--r-- | contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp b/contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp new file mode 100644 index 0000000000..d491c0eb7e --- /dev/null +++ b/contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp @@ -0,0 +1,124 @@ +//===- MC/MCRegisterInfo.cpp - Target Register Description ----------------===// +// +// 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 implements MCRegisterInfo functions. +// +//===----------------------------------------------------------------------===// + +#include "llvm/MC/MCRegisterInfo.h" +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/Twine.h" +#include "llvm/Support/ErrorHandling.h" +#include <algorithm> +#include <cassert> +#include <cstdint> + +using namespace llvm; + +MCRegister +MCRegisterInfo::getMatchingSuperReg(MCRegister Reg, unsigned SubIdx, + const MCRegisterClass *RC) const { + for (MCSuperRegIterator Supers(Reg, this); Supers.isValid(); ++Supers) + if (RC->contains(*Supers) && Reg == getSubReg(*Supers, SubIdx)) + return *Supers; + return 0; +} + +MCRegister MCRegisterInfo::getSubReg(MCRegister Reg, unsigned Idx) const { + assert(Idx && Idx < getNumSubRegIndices() && + "This is not a subregister index"); + // Get a pointer to the corresponding SubRegIndices list. This list has the + // name of each sub-register in the same order as MCSubRegIterator. + const uint16_t *SRI = SubRegIndices + get(Reg).SubRegIndices; + for (MCSubRegIterator Subs(Reg, this); Subs.isValid(); ++Subs, ++SRI) + if (*SRI == Idx) + return *Subs; + return 0; +} + +unsigned MCRegisterInfo::getSubRegIndex(MCRegister Reg, + MCRegister SubReg) const { + assert(SubReg && SubReg < getNumRegs() && "This is not a register"); + // Get a pointer to the corresponding SubRegIndices list. This list has the + // name of each sub-register in the same order as MCSubRegIterator. + const uint16_t *SRI = SubRegIndices + get(Reg).SubRegIndices; + for (MCSubRegIterator Subs(Reg, this); Subs.isValid(); ++Subs, ++SRI) + if (*Subs == SubReg) + return *SRI; + return 0; +} + +unsigned MCRegisterInfo::getSubRegIdxSize(unsigned Idx) const { + assert(Idx && Idx < getNumSubRegIndices() && + "This is not a subregister index"); + return SubRegIdxRanges[Idx].Size; +} + +unsigned MCRegisterInfo::getSubRegIdxOffset(unsigned Idx) const { + assert(Idx && Idx < getNumSubRegIndices() && + "This is not a subregister index"); + return SubRegIdxRanges[Idx].Offset; +} + +int MCRegisterInfo::getDwarfRegNum(MCRegister RegNum, bool isEH) const { + const DwarfLLVMRegPair *M = isEH ? EHL2DwarfRegs : L2DwarfRegs; + unsigned Size = isEH ? EHL2DwarfRegsSize : L2DwarfRegsSize; + + if (!M) + return -1; + DwarfLLVMRegPair Key = { RegNum, 0 }; + const DwarfLLVMRegPair *I = std::lower_bound(M, M+Size, Key); + if (I == M+Size || I->FromReg != RegNum) + return -1; + return I->ToReg; +} + +Optional<unsigned> MCRegisterInfo::getLLVMRegNum(unsigned RegNum, + bool isEH) const { + const DwarfLLVMRegPair *M = isEH ? EHDwarf2LRegs : Dwarf2LRegs; + unsigned Size = isEH ? EHDwarf2LRegsSize : Dwarf2LRegsSize; + + if (!M) + return None; + DwarfLLVMRegPair Key = { RegNum, 0 }; + const DwarfLLVMRegPair *I = std::lower_bound(M, M+Size, Key); + if (I != M + Size && I->FromReg == RegNum) + return I->ToReg; + return None; +} + +int MCRegisterInfo::getDwarfRegNumFromDwarfEHRegNum(unsigned RegNum) const { + // On ELF platforms, DWARF EH register numbers are the same as DWARF + // other register numbers. On Darwin x86, they differ and so need to be + // mapped. The .cfi_* directives accept integer literals as well as + // register names and should generate exactly what the assembly code + // asked for, so there might be DWARF/EH register numbers that don't have + // a corresponding LLVM register number at all. So if we can't map the + // EH register number to an LLVM register number, assume it's just a + // valid DWARF register number as is. + if (Optional<unsigned> LRegNum = getLLVMRegNum(RegNum, true)) + return getDwarfRegNum(*LRegNum, false); + return RegNum; +} + +int MCRegisterInfo::getSEHRegNum(MCRegister RegNum) const { + const DenseMap<MCRegister, int>::const_iterator I = L2SEHRegs.find(RegNum); + if (I == L2SEHRegs.end()) return (int)RegNum; + return I->second; +} + +int MCRegisterInfo::getCodeViewRegNum(MCRegister RegNum) const { + if (L2CVRegs.empty()) + report_fatal_error("target does not implement codeview register mapping"); + const DenseMap<MCRegister, int>::const_iterator I = L2CVRegs.find(RegNum); + if (I == L2CVRegs.end()) + report_fatal_error("unknown codeview register " + (RegNum < getNumRegs() + ? getName(RegNum) + : Twine(RegNum))); + return I->second; +} |