26 "enable-emscripten-cxx-exceptions",
27 cl::desc(
"WebAssembly Emscripten-style exception handling"),
31 "enable-emscripten-sjlj",
32 cl::desc(
"WebAssembly Emscripten-style setjmp/longjmp handling"),
37 cl::desc(
"WebAssembly exception handling"),
42 cl::desc(
"WebAssembly setjmp/longjmp handling"),
50 "_Unwind_Wasm_CallPersonality";
55 if (
MI.getNumOperands() == 0)
65 switch (
MI.getOpcode()) {
66 case WebAssembly::THROW:
67 case WebAssembly::THROW_S:
68 case WebAssembly::RETHROW:
69 case WebAssembly::RETHROW_S:
87 if (strcmp(
Name,
"memcpy") == 0 || strcmp(
Name,
"memmove") == 0 ||
88 strcmp(
Name,
"memset") == 0)
93 const auto *
F = dyn_cast<Function>(MO.
getGlobal());
96 if (
F->doesNotThrow())
109 switch (
MI.getOpcode()) {
110 case WebAssembly::CALL:
111 case WebAssembly::CALL_S:
112 case WebAssembly::RET_CALL:
113 case WebAssembly::RET_CALL_S:
114 return MI.getOperand(
MI.getNumExplicitDefs());
115 case WebAssembly::CALL_INDIRECT:
116 case WebAssembly::CALL_INDIRECT_S:
117 case WebAssembly::RET_CALL_INDIRECT:
118 case WebAssembly::RET_CALL_INDIRECT_S:
119 return MI.getOperand(
MI.getNumExplicitOperands() - 1);
172 auto Pos = EHPad->
begin();
175 while (Pos != EHPad->
end() &&
176 (Pos->isLabel() || Pos->isDebugInstr() ||
isMarker(Pos->getOpcode())))
185 switch (RC->
getID()) {
186 case WebAssembly::I32RegClassID:
187 return WebAssembly::COPY_I32;
188 case WebAssembly::I64RegClassID:
189 return WebAssembly::COPY_I64;
190 case WebAssembly::F32RegClassID:
191 return WebAssembly::COPY_F32;
192 case WebAssembly::F64RegClassID:
193 return WebAssembly::COPY_F64;
194 case WebAssembly::V128RegClassID:
195 return WebAssembly::COPY_V128;
196 case WebAssembly::FUNCREFRegClassID:
197 return WebAssembly::COPY_FUNCREF;
198 case WebAssembly::EXTERNREFRegClassID:
199 return WebAssembly::COPY_EXTERNREF;
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
This file declares WebAssembly-specific per-machine-function information.
This file contains the declaration of the WebAssembly-specific utility functions.
Context object for machine code objects.
MCSymbol * lookupSymbol(const Twine &Name) const
Get the symbol for Name, or null.
void reportError(SMLoc L, const Twine &Msg)
MCSymbol * getOrCreateSymbol(const Twine &Name)
Lookup the symbol inside with the specified Name.
void setTableType(wasm::WasmTableType TT)
bool isFunctionTable() const
void setWeak(bool isWeak)
void setType(wasm::WasmSymbolType type)
void setOmitFromLinkingSection()
void setUndefined()
Mark the symbol as undefined.
bool isEHPad() const
Returns true if the block is a landing pad.
Representation of each machine instruction.
MachineOperand class - Representation of each machine instruction operand.
const GlobalValue * getGlobal() const
bool isReg() const
isReg - Tests if this is a MO_Register operand.
bool isSymbol() const
isSymbol - Tests if this is a MO_ExternalSymbol operand.
bool isGlobal() const
isGlobal - Tests if this is a MO_GlobalAddress operand.
const char * getSymbolName() const
Register getReg() const
getReg - Returns the register number.
Wrapper class representing virtual and physical registers.
Represents a location in source code.
StringRef - Represent a constant reference to a string, i.e.
unsigned getID() const
Return the register class ID number.
This class is derived from MachineFunctionInfo and contains private WebAssembly-specific information ...
bool isVRegStackified(unsigned VReg) const
bool hasReferenceTypes() const
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
const char *const StdTerminateFn
const char *const CxaBeginCatchFn
bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI)
Test whether MI is a child of some other node in an expression tree.
bool isCallIndirect(unsigned Opc)
const char *const CxaRethrowFn
MCSymbolWasm * getOrCreateFunctionTableSymbol(MCContext &Ctx, const WebAssemblySubtarget *Subtarget)
Returns the __indirect_function_table, for use in call_indirect and in function bitcasts.
bool isMarker(unsigned Opc)
unsigned getCopyOpcodeForRegClass(const TargetRegisterClass *RC)
Returns the appropriate copy opcode for the given register class.
const MachineOperand & getCalleeOp(const MachineInstr &MI)
Returns the operand number of a callee, assuming the argument is a call instruction.
MachineInstr * findCatch(MachineBasicBlock *EHPad)
Find a catch instruction from an EH pad.
bool isCatch(unsigned Opc)
MCSymbolWasm * getOrCreateFuncrefCallTableSymbol(MCContext &Ctx, const WebAssemblySubtarget *Subtarget)
Returns the __funcref_call_table, for use in funcref calls when lowered to table.set + call_indirect.
cl::opt< bool > WasmEnableEH
cl::opt< bool > WasmEnableSjLj
const char *const PersonalityWrapperFn
cl::opt< bool > WasmEnableEmEH
cl::opt< bool > WasmEnableEmSjLj
bool mayThrow(const MachineInstr &MI)
initializer< Ty > init(const Ty &Val)
This is an optimization pass for GlobalISel generic memory operations.