Files
clang-p2996/llvm/lib/Target/WebAssembly/Utils/WebAssemblyUtilities.h
Roman Lebedev c2c0d3ea89 Revert "[WebAssembly] Implementation of global.get/set for reftypes in LLVM IR"
This reverts commit 4facbf213c.

```
********************
FAIL: LLVM :: CodeGen/WebAssembly/funcref-call.ll (44466 of 44468)
******************** TEST 'LLVM :: CodeGen/WebAssembly/funcref-call.ll' FAILED ********************
Script:
--
: 'RUN: at line 1';   /builddirs/llvm-project/build-Clang12/bin/llc < /repositories/llvm-project/llvm/test/CodeGen/WebAssembly/funcref-call.ll --mtriple=wasm32-unknown-unknown -asm-verbose=false -mattr=+reference-types | /builddirs/llvm-project/build-Clang12/bin/FileCheck /repositories/llvm-project/llvm/test/CodeGen/WebAssembly/funcref-call.ll
--
Exit Code: 2

Command Output (stderr):
--
llc: /repositories/llvm-project/llvm/include/llvm/Support/LowLevelTypeImpl.h:44: static llvm::LLT llvm::LLT::scalar(unsigned int): Assertion `SizeInBits > 0 && "invalid scalar size"' failed.

```
2021-07-02 11:49:51 +03:00

80 lines
2.6 KiB
C++

//===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- C++ -*-====//
//
// 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the declaration of the WebAssembly-specific
/// utility functions.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYUTILITIES_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYUTILITIES_H
namespace llvm {
class MachineBasicBlock;
class MachineInstr;
class MachineOperand;
class MCContext;
class MCSymbolWasm;
class StringRef;
class WebAssemblyFunctionInfo;
class WebAssemblySubtarget;
namespace WebAssembly {
enum WasmAddressSpace : unsigned {
// Default address space, for pointers to linear memory (stack, heap, data).
WASM_ADDRESS_SPACE_DEFAULT = 0,
// A non-integral address space for pointers to named objects outside of
// linear memory: WebAssembly globals or WebAssembly locals. Loads and stores
// to these pointers are lowered to global.get / global.set or local.get /
// local.set, as appropriate.
WASM_ADDRESS_SPACE_WASM_VAR = 1
};
inline bool isDefaultAddressSpace(unsigned AS) {
return AS == WASM_ADDRESS_SPACE_DEFAULT;
}
inline bool isWasmVarAddressSpace(unsigned AS) {
return AS == WASM_ADDRESS_SPACE_WASM_VAR;
}
inline bool isValidAddressSpace(unsigned AS) {
return isDefaultAddressSpace(AS) || isWasmVarAddressSpace(AS);
}
bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI);
bool mayThrow(const MachineInstr &MI);
// Exception-related function names
extern const char *const ClangCallTerminateFn;
extern const char *const CxaBeginCatchFn;
extern const char *const CxaRethrowFn;
extern const char *const StdTerminateFn;
extern const char *const PersonalityWrapperFn;
/// Returns the operand number of a callee, assuming the argument is a call
/// instruction.
const MachineOperand &getCalleeOp(const MachineInstr &MI);
/// Returns the __indirect_function_table, for use in call_indirect and in
/// function bitcasts.
MCSymbolWasm *
getOrCreateFunctionTableSymbol(MCContext &Ctx,
const WebAssemblySubtarget *Subtarget);
/// Find a catch instruction from an EH pad. Returns null if no catch
/// instruction found or the catch is in an invalid location.
MachineInstr *findCatch(MachineBasicBlock *EHPad);
} // end namespace WebAssembly
} // end namespace llvm
#endif