llvm-project/llvm/lib/Target/ARM/ARMLegalizerInfo.cpp

64 lines
1.9 KiB
C++

//===- ARMLegalizerInfo.cpp --------------------------------------*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
/// This file implements the targeting of the Machinelegalizer class for ARM.
/// \todo This should be generated by TableGen.
//===----------------------------------------------------------------------===//
#include "ARMLegalizerInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Type.h"
#include "llvm/Target/TargetOpcodes.h"
using namespace llvm;
#ifndef LLVM_BUILD_GLOBAL_ISEL
#error "You shouldn't build this"
#endif
ARMLegalizerInfo::ARMLegalizerInfo() {
using namespace TargetOpcode;
const LLT p0 = LLT::pointer(0, 32);
const LLT s1 = LLT::scalar(1);
const LLT s8 = LLT::scalar(8);
const LLT s16 = LLT::scalar(16);
const LLT s32 = LLT::scalar(32);
const LLT s64 = LLT::scalar(64);
setAction({G_FRAME_INDEX, p0}, Legal);
for (auto Ty : {s1, s8, s16, s32, p0})
setAction({G_LOAD, Ty}, Legal);
setAction({G_LOAD, 1, p0}, Legal);
// FIXME: This is strictly for loading double-precision floating point values,
// if the hardware allows it. We rely on the instruction selector to complain
// otherwise.
setAction({G_LOAD, s64}, Legal);
for (auto Ty : {s1, s8, s16, s32})
setAction({G_ADD, Ty}, Legal);
for (unsigned Op : {G_SEXT, G_ZEXT}) {
setAction({Op, s32}, Legal);
for (auto Ty : {s1, s8, s16})
setAction({Op, 1, Ty}, Legal);
}
// FIXME: This is a bit sloppy, but for now we'll just rely on the instruction
// selector to complain if it doesn't support floating point.
setAction({G_FADD, s32}, Legal);
setAction({G_FADD, s64}, Legal);
computeTables();
}