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//===-- llvm/CodeGen/GlobalISel/LowLevelType.cpp --------------------------===//
//
// 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 more header-heavy bits of the LLT class to
/// avoid polluting users' namespaces.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/LowLevelType.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
LLT::LLT(Type &Ty, const DataLayout &DL) {
if (auto VTy = dyn_cast<VectorType>(&Ty)) {
SizeInBits = VTy->getElementType()->getPrimitiveSizeInBits();
ElementsOrAddrSpace = VTy->getNumElements();
Kind = ElementsOrAddrSpace == 1 ? Scalar : Vector;
} else if (auto PTy = dyn_cast<PointerType>(&Ty)) {
Kind = Pointer;
SizeInBits = DL.getTypeSizeInBits(&Ty);
ElementsOrAddrSpace = PTy->getAddressSpace();
} else if (Ty.isSized()) {
// Aggregates are no different from real scalars as far as GlobalISel is
// concerned.
Kind = Scalar;
SizeInBits = DL.getTypeSizeInBits(&Ty);
ElementsOrAddrSpace = 1;
assert(SizeInBits != 0 && "invalid zero-sized type");
} else {
Kind = Invalid;
SizeInBits = ElementsOrAddrSpace = 0;
}
}
LLT::LLT(MVT VT) {
if (VT.isVector()) {
SizeInBits = VT.getVectorElementType().getSizeInBits();
ElementsOrAddrSpace = VT.getVectorNumElements();
Kind = ElementsOrAddrSpace == 1 ? Scalar : Vector;
} else if (VT.isValid()) {
// Aggregates are no different from real scalars as far as GlobalISel is
// concerned.
Kind = Scalar;
SizeInBits = VT.getSizeInBits();
ElementsOrAddrSpace = 1;
assert(SizeInBits != 0 && "invalid zero-sized type");
} else {
Kind = Invalid;
SizeInBits = ElementsOrAddrSpace = 0;
}
}
void LLT::print(raw_ostream &OS) const {
if (isVector())
OS << "<" << ElementsOrAddrSpace << " x s" << SizeInBits << ">";
else if (isPointer())
OS << "p" << getAddressSpace();
else if (isValid()) {
assert(isScalar() && "unexpected type");
OS << "s" << getScalarSizeInBits();
} else
llvm_unreachable("trying to print an invalid type");
}
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