lib/Support/LowLevelType.cpp

   1 //===-- llvm/Support/LowLevelType.cpp -------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 /// \file This file implements the more header-heavy bits of the LLT class to
  10 /// avoid polluting users' namespaces.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Support/LowLevelTypeImpl.h"
  15 #include "llvm/Support/raw_ostream.h"
  16 using namespace llvm;
  17
  18 LLT::LLT(MVT VT) {
  19   if (VT.isVector()) {
  20     init(/*IsPointer=*/false, VT.getVectorNumElements() > 1,
  21          VT.getVectorNumElements(), VT.getVectorElementType().getSizeInBits(),
  22          /*AddressSpace=*/0);
  23   } else if (VT.isValid()) {
  24     // Aggregates are no different from real scalars as far as GlobalISel is
  25     // concerned.
  26     assert(VT.getSizeInBits() != 0 && "invalid zero-sized type");
  27     init(/*IsPointer=*/false, /*IsVector=*/false, /*NumElements=*/0,
  28          VT.getSizeInBits(), /*AddressSpace=*/0);
  29   } else {
  30     IsPointer = false;
  31     IsVector = false;
  32     RawData = 0;
  33   }
  34 }
  35
  36 void LLT::print(raw_ostream &OS) const {
  37   if (isVector())
  38     OS << "<" << getNumElements() << " x " << getElementType() << ">";
  39   else if (isPointer())
  40     OS << "p" << getAddressSpace();
  41   else if (isValid()) {
  42     assert(isScalar() && "unexpected type");
  43     OS << "s" << getScalarSizeInBits();
  44   } else
  45     OS << "LLT_invalid";
  46 }
  47
  48 const constexpr LLT::BitFieldInfo LLT::ScalarSizeFieldInfo;
  49 const constexpr LLT::BitFieldInfo LLT::PointerSizeFieldInfo;
  50 const constexpr LLT::BitFieldInfo LLT::PointerAddressSpaceFieldInfo;
  51 const constexpr LLT::BitFieldInfo LLT::VectorElementsFieldInfo;
  52 const constexpr LLT::BitFieldInfo LLT::VectorSizeFieldInfo;
  53 const constexpr LLT::BitFieldInfo LLT::PointerVectorElementsFieldInfo;
  54 const constexpr LLT::BitFieldInfo LLT::PointerVectorSizeFieldInfo;
  55 const constexpr LLT::BitFieldInfo LLT::PointerVectorAddressSpaceFieldInfo;