CIRGenTypeCache.h

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//===--- CIRGenTypeCache.h - Commonly used LLVM types and info -*- 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
//
//===----------------------------------------------------------------------===//
//
// This structure provides a set of common types useful during CIR emission.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_LIB_CIR_CIRGENTYPECACHE_H
#define LLVM_CLANG_LIB_CIR_CIRGENTYPECACHE_H
 
#include "clang/AST/CharUnits.h"
#include "clang/Basic/AddressSpaces.h"
#include "clang/CIR/Dialect/IR/CIRTypes.h"
 
namespace clang::CIRGen {
 
/// This structure provides a set of types that are commonly used
/// during IR emission. It's initialized once in CodeGenModule's
/// constructor and then copied around into new CIRGenFunction's.
struct CIRGenTypeCache {
  CIRGenTypeCache() {}
 
  // ClangIR void type
  cir::VoidType voidTy;
 
  // ClangIR signed integral types of common sizes
  cir::IntType sInt8Ty;
  cir::IntType sInt16Ty;
  cir::IntType sInt32Ty;
  cir::IntType sInt64Ty;
  cir::IntType sInt128Ty;
 
  // ClangIR unsigned integral type of common sizes
  cir::IntType uInt8Ty;
  cir::IntType uInt16Ty;
  cir::IntType uInt32Ty;
  cir::IntType uInt64Ty;
  cir::IntType uInt128Ty;
 
  // ClangIR floating-point types with fixed formats
  cir::FP16Type fP16Ty;
  cir::BF16Type bFloat16Ty;
  cir::SingleType floatTy;
  cir::DoubleType doubleTy;
  cir::FP80Type fP80Ty;
  cir::FP128Type fP128Ty;
 
  /// ClangIR char
  mlir::Type uCharTy;
 
  /// intptr_t, size_t, and ptrdiff_t, which we assume are the same size.
  union {
    mlir::Type uIntPtrTy;
    mlir::Type sizeTy;
  };
 
  mlir::Type ptrDiffTy;
 
  /// void* in address space 0
  cir::PointerType voidPtrTy;
  cir::PointerType uInt8PtrTy;
 
  /// void* in alloca address space
  cir::PointerType allocaInt8PtrTy;
 
  /// The size and alignment of a pointer into the generic address space.
  union {
    unsigned char PointerAlignInBytes;
    unsigned char PointerSizeInBytes;
  };
 
  /// The size and alignment of size_t.
  union {
    unsigned char SizeSizeInBytes; // sizeof(size_t)
    unsigned char SizeAlignInBytes;
  };
 
  cir::TargetAddressSpaceAttr cirAllocaAddressSpace;
 
  clang::CharUnits getSizeSize() const {
    return clang::CharUnits::fromQuantity(SizeSizeInBytes);
  }
  clang::CharUnits getSizeAlign() const {
    return clang::CharUnits::fromQuantity(SizeAlignInBytes);
  }
 
  clang::CharUnits getPointerAlign() const {
    return clang::CharUnits::fromQuantity(PointerAlignInBytes);
  }
 
  cir::TargetAddressSpaceAttr getCIRAllocaAddressSpace() const {
    return cirAllocaAddressSpace;
  }
};
 
} // namespace clang::CIRGen
 
#endif // LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENTYPECACHE_H