Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 304 deletions

diff --git a/gnu/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp b/gnu/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
deleted file mode 100644
index fa862fbaa63..00000000000
--- a/gnu/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
+++ /dev/null
@@ -1,304 +0,0 @@
-// WebAssemblyMCInstLower.cpp - Convert WebAssembly MachineInstr to an MCInst //
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file contains code to lower WebAssembly MachineInstrs to their
-/// corresponding MCInst records.
-///
-//===----------------------------------------------------------------------===//
-
-#include "WebAssemblyMCInstLower.h"
-#include "WebAssemblyAsmPrinter.h"
-#include "WebAssemblyMachineFunctionInfo.h"
-#include "WebAssemblyRuntimeLibcallSignatures.h"
-#include "WebAssemblyUtilities.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCSymbolWasm.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-// Defines llvm::WebAssembly::getStackOpcode to convert register instructions to
-// stack instructions
-#define GET_INSTRMAP_INFO 1
-#include "WebAssemblyGenInstrInfo.inc"
-
-// This disables the removal of registers when lowering into MC, as required
-// by some current tests.
-static cl::opt<bool>
-    WasmKeepRegisters("wasm-keep-registers", cl::Hidden,
-                      cl::desc("WebAssembly: output stack registers in"
-                               " instruction output for test purposes only."),
-                      cl::init(false));
-
-static void removeRegisterOperands(const MachineInstr *MI, MCInst &OutMI);
-
-MCSymbol *
-WebAssemblyMCInstLower::GetGlobalAddressSymbol(const MachineOperand &MO) const {
-  const GlobalValue *Global = MO.getGlobal();
-  MCSymbolWasm *WasmSym = cast<MCSymbolWasm>(Printer.getSymbol(Global));
-
-  if (const auto *FuncTy = dyn_cast<FunctionType>(Global->getValueType())) {
-    const MachineFunction &MF = *MO.getParent()->getParent()->getParent();
-    const TargetMachine &TM = MF.getTarget();
-    const Function &CurrentFunc = MF.getFunction();
-
-    SmallVector<MVT, 1> ResultMVTs;
-    SmallVector<MVT, 4> ParamMVTs;
-    ComputeSignatureVTs(FuncTy, CurrentFunc, TM, ParamMVTs, ResultMVTs);
-
-    auto Signature = SignatureFromMVTs(ResultMVTs, ParamMVTs);
-    WasmSym->setSignature(Signature.get());
-    Printer.addSignature(std::move(Signature));
-    WasmSym->setType(wasm::WASM_SYMBOL_TYPE_FUNCTION);
-  }
-
-  return WasmSym;
-}
-
-MCSymbol *WebAssemblyMCInstLower::GetExternalSymbolSymbol(
-    const MachineOperand &MO) const {
-  const char *Name = MO.getSymbolName();
-  MCSymbolWasm *WasmSym =
-      cast<MCSymbolWasm>(Printer.GetExternalSymbolSymbol(Name));
-  const WebAssemblySubtarget &Subtarget = Printer.getSubtarget();
-
-  // Except for the two exceptions (__stack_pointer and __cpp_exception), all
-  // other external symbols used by CodeGen are functions. It's OK to hardcode
-  // knowledge of specific symbols here; this method is precisely there for
-  // fetching the signatures of known Clang-provided symbols.
-  if (strcmp(Name, "__stack_pointer") == 0) {
-    WasmSym->setType(wasm::WASM_SYMBOL_TYPE_GLOBAL);
-    WasmSym->setGlobalType(wasm::WasmGlobalType{
-        uint8_t(Subtarget.hasAddr64() ? wasm::WASM_TYPE_I64
-                                      : wasm::WASM_TYPE_I32),
-        true});
-    return WasmSym;
-  }
-
-  SmallVector<wasm::ValType, 4> Returns;
-  SmallVector<wasm::ValType, 4> Params;
-  if (strcmp(Name, "__cpp_exception") == 0) {
-    WasmSym->setType(wasm::WASM_SYMBOL_TYPE_EVENT);
-    // We can't confirm its signature index for now because there can be
-    // imported exceptions. Set it to be 0 for now.
-    WasmSym->setEventType(
-        {wasm::WASM_EVENT_ATTRIBUTE_EXCEPTION, /* SigIndex */ 0});
-    // We may have multiple C++ compilation units to be linked together, each of
-    // which defines the exception symbol. To resolve them, we declare them as
-    // weak.
-    WasmSym->setWeak(true);
-    WasmSym->setExternal(true);
-
-    // All C++ exceptions are assumed to have a single i32 (for wasm32) or i64
-    // (for wasm64) param type and void return type. The reaon is, all C++
-    // exception values are pointers, and to share the type section with
-    // functions, exceptions are assumed to have void return type.
-    Params.push_back(Subtarget.hasAddr64() ? wasm::ValType::I64
-                                           : wasm::ValType::I32);
-  } else { // Function symbols
-    WasmSym->setType(wasm::WASM_SYMBOL_TYPE_FUNCTION);
-    GetLibcallSignature(Subtarget, Name, Returns, Params);
-  }
-  auto Signature =
-      make_unique<wasm::WasmSignature>(std::move(Returns), std::move(Params));
-  WasmSym->setSignature(Signature.get());
-  Printer.addSignature(std::move(Signature));
-
-  return WasmSym;
-}
-
-MCOperand WebAssemblyMCInstLower::LowerSymbolOperand(MCSymbol *Sym,
-                                                     int64_t Offset,
-                                                     bool IsFunc, bool IsGlob,
-                                                     bool IsEvent) const {
-  MCSymbolRefExpr::VariantKind VK =
-      IsFunc ? MCSymbolRefExpr::VK_WebAssembly_FUNCTION
-             : IsGlob ? MCSymbolRefExpr::VK_WebAssembly_GLOBAL
-                      : IsEvent ? MCSymbolRefExpr::VK_WebAssembly_EVENT
-                                : MCSymbolRefExpr::VK_None;
-
-  const MCExpr *Expr = MCSymbolRefExpr::create(Sym, VK, Ctx);
-
-  if (Offset != 0) {
-    if (IsFunc)
-      report_fatal_error("Function addresses with offsets not supported");
-    if (IsGlob)
-      report_fatal_error("Global indexes with offsets not supported");
-    if (IsEvent)
-      report_fatal_error("Event indexes with offsets not supported");
-    Expr =
-        MCBinaryExpr::createAdd(Expr, MCConstantExpr::create(Offset, Ctx), Ctx);
-  }
-
-  return MCOperand::createExpr(Expr);
-}
-
-// Return the WebAssembly type associated with the given register class.
-static wasm::ValType getType(const TargetRegisterClass *RC) {
-  if (RC == &WebAssembly::I32RegClass)
-    return wasm::ValType::I32;
-  if (RC == &WebAssembly::I64RegClass)
-    return wasm::ValType::I64;
-  if (RC == &WebAssembly::F32RegClass)
-    return wasm::ValType::F32;
-  if (RC == &WebAssembly::F64RegClass)
-    return wasm::ValType::F64;
-  if (RC == &WebAssembly::V128RegClass)
-    return wasm::ValType::V128;
-  llvm_unreachable("Unexpected register class");
-}
-
-void WebAssemblyMCInstLower::Lower(const MachineInstr *MI,
-                                   MCInst &OutMI) const {
-  OutMI.setOpcode(MI->getOpcode());
-
-  const MCInstrDesc &Desc = MI->getDesc();
-  for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
-    const MachineOperand &MO = MI->getOperand(i);
-
-    MCOperand MCOp;
-    switch (MO.getType()) {
-    default:
-      MI->print(errs());
-      llvm_unreachable("unknown operand type");
-    case MachineOperand::MO_MachineBasicBlock:
-      MI->print(errs());
-      llvm_unreachable("MachineBasicBlock operand should have been rewritten");
-    case MachineOperand::MO_Register: {
-      // Ignore all implicit register operands.
-      if (MO.isImplicit())
-        continue;
-      const WebAssemblyFunctionInfo &MFI =
-          *MI->getParent()->getParent()->getInfo<WebAssemblyFunctionInfo>();
-      unsigned WAReg = MFI.getWAReg(MO.getReg());
-      MCOp = MCOperand::createReg(WAReg);
-      break;
-    }
-    case MachineOperand::MO_Immediate:
-      if (i < Desc.NumOperands) {
-        const MCOperandInfo &Info = Desc.OpInfo[i];
-        if (Info.OperandType == WebAssembly::OPERAND_TYPEINDEX) {
-          MCSymbol *Sym = Printer.createTempSymbol("typeindex");
-
-          SmallVector<wasm::ValType, 4> Returns;
-          SmallVector<wasm::ValType, 4> Params;
-
-          const MachineRegisterInfo &MRI =
-              MI->getParent()->getParent()->getRegInfo();
-          for (const MachineOperand &MO : MI->defs())
-            Returns.push_back(getType(MRI.getRegClass(MO.getReg())));
-          for (const MachineOperand &MO : MI->explicit_uses())
-            if (MO.isReg())
-              Params.push_back(getType(MRI.getRegClass(MO.getReg())));
-
-          // call_indirect instructions have a callee operand at the end which
-          // doesn't count as a param.
-          if (WebAssembly::isCallIndirect(*MI))
-            Params.pop_back();
-
-          MCSymbolWasm *WasmSym = cast<MCSymbolWasm>(Sym);
-          auto Signature = make_unique<wasm::WasmSignature>(std::move(Returns),
-                                                            std::move(Params));
-          WasmSym->setSignature(Signature.get());
-          Printer.addSignature(std::move(Signature));
-          WasmSym->setType(wasm::WASM_SYMBOL_TYPE_FUNCTION);
-
-          const MCExpr *Expr = MCSymbolRefExpr::create(
-              WasmSym, MCSymbolRefExpr::VK_WebAssembly_TYPEINDEX, Ctx);
-          MCOp = MCOperand::createExpr(Expr);
-          break;
-        }
-      }
-      MCOp = MCOperand::createImm(MO.getImm());
-      break;
-    case MachineOperand::MO_FPImmediate: {
-      // TODO: MC converts all floating point immediate operands to double.
-      // This is fine for numeric values, but may cause NaNs to change bits.
-      const ConstantFP *Imm = MO.getFPImm();
-      if (Imm->getType()->isFloatTy())
-        MCOp = MCOperand::createFPImm(Imm->getValueAPF().convertToFloat());
-      else if (Imm->getType()->isDoubleTy())
-        MCOp = MCOperand::createFPImm(Imm->getValueAPF().convertToDouble());
-      else
-        llvm_unreachable("unknown floating point immediate type");
-      break;
-    }
-    case MachineOperand::MO_GlobalAddress:
-      assert(MO.getTargetFlags() == WebAssemblyII::MO_NO_FLAG &&
-             "WebAssembly does not use target flags on GlobalAddresses");
-      MCOp = LowerSymbolOperand(GetGlobalAddressSymbol(MO), MO.getOffset(),
-                                MO.getGlobal()->getValueType()->isFunctionTy(),
-                                false, false);
-      break;
-    case MachineOperand::MO_ExternalSymbol:
-      // The target flag indicates whether this is a symbol for a
-      // variable or a function.
-      assert((MO.getTargetFlags() & ~WebAssemblyII::MO_SYMBOL_MASK) == 0 &&
-             "WebAssembly uses only symbol flags on ExternalSymbols");
-      MCOp = LowerSymbolOperand(
-          GetExternalSymbolSymbol(MO), /*Offset=*/0,
-          (MO.getTargetFlags() & WebAssemblyII::MO_SYMBOL_FUNCTION) != 0,
-          (MO.getTargetFlags() & WebAssemblyII::MO_SYMBOL_GLOBAL) != 0,
-          (MO.getTargetFlags() & WebAssemblyII::MO_SYMBOL_EVENT) != 0);
-      break;
-    case MachineOperand::MO_MCSymbol:
-      // This is currently used only for LSDA symbols (GCC_except_table),
-      // because global addresses or other external symbols are handled above.
-      assert(MO.getTargetFlags() == 0 &&
-             "WebAssembly does not use target flags on MCSymbol");
-      MCOp = LowerSymbolOperand(MO.getMCSymbol(), /*Offset=*/0, false, false,
-                                false);
-      break;
-    }
-
-    OutMI.addOperand(MCOp);
-  }
-
-  if (!WasmKeepRegisters)
-    removeRegisterOperands(MI, OutMI);
-}
-
-static void removeRegisterOperands(const MachineInstr *MI, MCInst &OutMI) {
-  // Remove all uses of stackified registers to bring the instruction format
-  // into its final stack form used thruout MC, and transition opcodes to
-  // their _S variant.
-  // We do this seperate from the above code that still may need these
-  // registers for e.g. call_indirect signatures.
-  // See comments in lib/Target/WebAssembly/WebAssemblyInstrFormats.td for
-  // details.
-  // TODO: the code above creates new registers which are then removed here.
-  // That code could be slightly simplified by not doing that, though maybe
-  // it is simpler conceptually to keep the code above in "register mode"
-  // until this transition point.
-  // FIXME: we are not processing inline assembly, which contains register
-  // operands, because it is used by later target generic code.
-  if (MI->isDebugInstr() || MI->isLabel() || MI->isInlineAsm())
-    return;
-
-  // Transform to _S instruction.
-  auto RegOpcode = OutMI.getOpcode();
-  auto StackOpcode = WebAssembly::getStackOpcode(RegOpcode);
-  assert(StackOpcode != -1 && "Failed to stackify instruction");
-  OutMI.setOpcode(StackOpcode);
-
-  // Remove register operands.
-  for (auto I = OutMI.getNumOperands(); I; --I) {
-    auto &MO = OutMI.getOperand(I - 1);
-    if (MO.isReg()) {
-      OutMI.erase(&MO);
-    }
-  }
-}