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authorvitalyisaev <vitalyisaev@yandex-team.com>2023-06-29 10:00:50 +0300
committervitalyisaev <vitalyisaev@yandex-team.com>2023-06-29 10:00:50 +0300
commit6ffe9e53658409f212834330e13564e4952558f6 (patch)
tree85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/llvm14/lib/MC/MCRegisterInfo.cpp
parent726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff)
downloadydb-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.cpp124
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
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+++ 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;
+}