98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
//===-- WebAssemblyUtilities.cpp - WebAssembly Utility Functions ----------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// \brief This file implements several utility functions for WebAssembly.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "WebAssemblyUtilities.h"
|
|
#include "WebAssemblyMachineFunctionInfo.h"
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/CodeGen/MachineLoopInfo.h"
|
|
using namespace llvm;
|
|
|
|
bool WebAssembly::isArgument(const MachineInstr &MI) {
|
|
switch (MI.getOpcode()) {
|
|
case WebAssembly::ARGUMENT_I32:
|
|
case WebAssembly::ARGUMENT_I64:
|
|
case WebAssembly::ARGUMENT_F32:
|
|
case WebAssembly::ARGUMENT_F64:
|
|
case WebAssembly::ARGUMENT_v16i8:
|
|
case WebAssembly::ARGUMENT_v8i16:
|
|
case WebAssembly::ARGUMENT_v4i32:
|
|
case WebAssembly::ARGUMENT_v4f32:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool WebAssembly::isCopy(const MachineInstr &MI) {
|
|
switch (MI.getOpcode()) {
|
|
case WebAssembly::COPY_I32:
|
|
case WebAssembly::COPY_I64:
|
|
case WebAssembly::COPY_F32:
|
|
case WebAssembly::COPY_F64:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool WebAssembly::isTee(const MachineInstr &MI) {
|
|
switch (MI.getOpcode()) {
|
|
case WebAssembly::TEE_I32:
|
|
case WebAssembly::TEE_I64:
|
|
case WebAssembly::TEE_F32:
|
|
case WebAssembly::TEE_F64:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// Test whether MI is a child of some other node in an expression tree.
|
|
bool WebAssembly::isChild(const MachineInstr &MI,
|
|
const WebAssemblyFunctionInfo &MFI) {
|
|
if (MI.getNumOperands() == 0)
|
|
return false;
|
|
const MachineOperand &MO = MI.getOperand(0);
|
|
if (!MO.isReg() || MO.isImplicit() || !MO.isDef())
|
|
return false;
|
|
unsigned Reg = MO.getReg();
|
|
return TargetRegisterInfo::isVirtualRegister(Reg) &&
|
|
MFI.isVRegStackified(Reg);
|
|
}
|
|
|
|
bool WebAssembly::isCallIndirect(const MachineInstr &MI) {
|
|
switch (MI.getOpcode()) {
|
|
case WebAssembly::CALL_INDIRECT_VOID:
|
|
case WebAssembly::CALL_INDIRECT_I32:
|
|
case WebAssembly::CALL_INDIRECT_I64:
|
|
case WebAssembly::CALL_INDIRECT_F32:
|
|
case WebAssembly::CALL_INDIRECT_F64:
|
|
case WebAssembly::CALL_INDIRECT_v16i8:
|
|
case WebAssembly::CALL_INDIRECT_v8i16:
|
|
case WebAssembly::CALL_INDIRECT_v4i32:
|
|
case WebAssembly::CALL_INDIRECT_v4f32:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
MachineBasicBlock *llvm::LoopBottom(const MachineLoop *Loop) {
|
|
MachineBasicBlock *Bottom = Loop->getHeader();
|
|
for (MachineBasicBlock *MBB : Loop->blocks())
|
|
if (MBB->getNumber() > Bottom->getNumber())
|
|
Bottom = MBB;
|
|
return Bottom;
|
|
}
|