clang 20.0.0git
CodeGenTypeCache.h
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1//===--- CodeGenTypeCache.h - Commonly used LLVM types and info -*- C++ -*-===//
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// This structure provides a set of common types useful during IR emission.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENTYPECACHE_H
14#define LLVM_CLANG_LIB_CODEGEN_CODEGENTYPECACHE_H
15
16#include "clang/AST/CharUnits.h"
18#include "llvm/IR/CallingConv.h"
19
20namespace llvm {
21 class Type;
22 class IntegerType;
23 class PointerType;
24}
25
26namespace clang {
27namespace CodeGen {
28
29/// This structure provides a set of types that are commonly used
30/// during IR emission. It's initialized once in CodeGenModule's
31/// constructor and then copied around into new CodeGenFunctions.
33 /// void
34 llvm::Type *VoidTy;
35
36 /// i8, i16, i32, and i64
37 llvm::IntegerType *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
38 /// half, bfloat, float, double
39 llvm::Type *HalfTy, *BFloatTy, *FloatTy, *DoubleTy;
40
41 /// int
42 llvm::IntegerType *IntTy;
43
44 /// char
45 llvm::IntegerType *CharTy;
46
47 /// intptr_t, size_t, and ptrdiff_t, which we assume are the same size.
48 union {
49 llvm::IntegerType *IntPtrTy;
50 llvm::IntegerType *SizeTy;
51 llvm::IntegerType *PtrDiffTy;
52 };
53
54 /// void*, void** in the target's default address space (often 0)
55 union {
56 llvm::PointerType *UnqualPtrTy;
57 llvm::PointerType *VoidPtrTy;
58 llvm::PointerType *Int8PtrTy;
59 llvm::PointerType *VoidPtrPtrTy;
60 llvm::PointerType *Int8PtrPtrTy;
61 };
62
63 /// void* in alloca address space
64 union {
65 llvm::PointerType *AllocaVoidPtrTy;
66 llvm::PointerType *AllocaInt8PtrTy;
67 };
68
69 /// void* in default globals address space
70 union {
71 llvm::PointerType *