1 pub use crate::llvm::Type;
3 use crate::abi::{FnAbiLlvmExt, LlvmType};
5 use crate::context::CodegenCx;
7 use crate::llvm::{Bool, False, True};
8 use crate::type_of::LayoutLlvmExt;
9 use crate::value::Value;
11 use rustc_codegen_ssa::common::TypeKind;
12 use rustc_codegen_ssa::traits::*;
13 use rustc_data_structures::small_c_str::SmallCStr;
14 use rustc_middle::bug;
15 use rustc_middle::ty::layout::{self, Align, Size, TyAndLayout};
16 use rustc_middle::ty::Ty;
17 use rustc_target::abi::call::{CastTarget, FnAbi, Reg};
24 impl PartialEq for Type {
25 fn eq(&self, other: &Self) -> bool {
30 impl fmt::Debug for Type {
31 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
33 &llvm::build_string(|s| unsafe {
34 llvm::LLVMRustWriteTypeToString(self, s);
36 .expect("non-UTF8 type description from LLVM"),
41 impl CodegenCx<'ll, 'tcx> {
42 crate fn type_named_struct(&self, name: &str) -> &'ll Type {
43 let name = SmallCStr::new(name);
44 unsafe { llvm::LLVMStructCreateNamed(self.llcx, name.as_ptr()) }
47 crate fn set_struct_body(&self, ty: &'ll Type, els: &[&'ll Type], packed: bool) {
48 unsafe { llvm::LLVMStructSetBody(ty, els.as_ptr(), els.len() as c_uint, packed as Bool) }
51 crate fn type_void(&self) -> &'ll Type {
52 unsafe { llvm::LLVMVoidTypeInContext(self.llcx) }
55 crate fn type_metadata(&self) -> &'ll Type {
56 unsafe { llvm::LLVMRustMetadataTypeInContext(self.llcx) }
59 ///x Creates an integer type with the given number of bits, e.g., i24
60 crate fn type_ix(&self, num_bits: u64) -> &'ll Type {
61 unsafe { llvm::LLVMIntTypeInContext(self.llcx, num_bits as c_uint) }
64 crate fn type_x86_mmx(&self) -> &'ll Type {
65 unsafe { llvm::LLVMX86MMXTypeInContext(self.llcx) }
68 crate fn type_vector(&self, ty: &'ll Type, len: u64) -> &'ll Type {
69 unsafe { llvm::LLVMVectorType(ty, len as c_uint) }
72 crate fn func_params_types(&self, ty: &'ll Type) -> Vec<&'ll Type> {
74 let n_args = llvm::LLVMCountParamTypes(ty) as usize;
75 let mut args = Vec::with_capacity(n_args);
76 llvm::LLVMGetParamTypes(ty, args.as_mut_ptr());
82 crate fn type_bool(&self) -> &'ll Type {
86 crate fn type_int_from_ty(&self, t: ast::IntTy) -> &'ll Type {
88 ast::IntTy::Isize => self.type_isize(),
89 ast::IntTy::I8 => self.type_i8(),
90 ast::IntTy::I16 => self.type_i16(),
91 ast::IntTy::I32 => self.type_i32(),
92 ast::IntTy::I64 => self.type_i64(),
93 ast::IntTy::I128 => self.type_i128(),
97 crate fn type_uint_from_ty(&self, t: ast::UintTy) -> &'ll Type {
99 ast::UintTy::Usize => self.type_isize(),
100 ast::UintTy::U8 => self.type_i8(),
101 ast::UintTy::U16 => self.type_i16(),
102 ast::UintTy::U32 => self.type_i32(),
103 ast::UintTy::U64 => self.type_i64(),
104 ast::UintTy::U128 => self.type_i128(),
108 crate fn type_float_from_ty(&self, t: ast::FloatTy) -> &'ll Type {
110 ast::FloatTy::F32 => self.type_f32(),
111 ast::FloatTy::F64 => self.type_f64(),
115 crate fn type_pointee_for_align(&self, align: Align) -> &'ll Type {
116 // FIXME(eddyb) We could find a better approximation if ity.align < align.
117 let ity = layout::Integer::approximate_align(self, align);
118 self.type_from_integer(ity)
121 /// Return a LLVM type that has at most the required alignment,
122 /// and exactly the required size, as a best-effort padding array.
123 crate fn type_padding_filler(&self, size: Size, align: Align) -> &'ll Type {
124 let unit = layout::Integer::approximate_align(self, align);
125 let size = size.bytes();
126 let unit_size = unit.size().bytes();
127 assert_eq!(size % unit_size, 0);
128 self.type_array(self.type_from_integer(unit), size / unit_size)
131 crate fn type_variadic_func(&self, args: &[&'ll Type], ret: &'ll Type) -> &'ll Type {
132 unsafe { llvm::LLVMFunctionType(ret, args.as_ptr(), args.len() as c_uint, True) }
135 crate fn type_array(&self, ty: &'ll Type, len: u64) -> &'ll Type {
136 unsafe { llvm::LLVMRustArrayType(ty, len) }
140 impl BaseTypeMethods<'tcx> for CodegenCx<'ll, 'tcx> {
141 fn type_i1(&self) -> &'ll Type {
142 unsafe { llvm::LLVMInt1TypeInContext(self.llcx) }
145 fn type_i8(&self) -> &'ll Type {
146 unsafe { llvm::LLVMInt8TypeInContext(self.llcx) }
149 fn type_i16(&self) -> &'ll Type {
150 unsafe { llvm::LLVMInt16TypeInContext(self.llcx) }
153 fn type_i32(&self) -> &'ll Type {
154 unsafe { llvm::LLVMInt32TypeInContext(self.llcx) }
157 fn type_i64(&self) -> &'ll Type {
158 unsafe { llvm::LLVMInt64TypeInContext(self.llcx) }
161 fn type_i128(&self) -> &'ll Type {
162 unsafe { llvm::LLVMIntTypeInContext(self.llcx, 128) }
165 fn type_isize(&self) -> &'ll Type {
169 fn type_f32(&self) -> &'ll Type {
170 unsafe { llvm::LLVMFloatTypeInContext(self.llcx) }
173 fn type_f64(&self) -> &'ll Type {
174 unsafe { llvm::LLVMDoubleTypeInContext(self.llcx) }
177 fn type_func(&self, args: &[&'ll Type], ret: &'ll Type) -> &'ll Type {
178 unsafe { llvm::LLVMFunctionType(ret, args.as_ptr(), args.len() as c_uint, False) }
181 fn type_struct(&self, els: &[&'ll Type], packed: bool) -> &'ll Type {
183 llvm::LLVMStructTypeInContext(
192 fn type_kind(&self, ty: &'ll Type) -> TypeKind {
193 unsafe { llvm::LLVMRustGetTypeKind(ty).to_generic() }
196 fn type_ptr_to(&self, ty: &'ll Type) -> &'ll Type {
200 "don't call ptr_to on function types, use ptr_to_llvm_type on FnAbi instead"
205 fn element_type(&self, ty: &'ll Type) -> &'ll Type {
206 unsafe { llvm::LLVMGetElementType(ty) }
209 fn vector_length(&self, ty: &'ll Type) -> usize {
210 unsafe { llvm::LLVMGetVectorSize(ty) as usize }
213 fn float_width(&self, ty: &'ll Type) -> usize {
214 match self.type_kind(ty) {
215 TypeKind::Float => 32,
216 TypeKind::Double => 64,
217 TypeKind::X86_FP80 => 80,
218 TypeKind::FP128 | TypeKind::PPC_FP128 => 128,
219 _ => bug!("llvm_float_width called on a non-float type"),
223 fn int_width(&self, ty: &'ll Type) -> u64 {
224 unsafe { llvm::LLVMGetIntTypeWidth(ty) as u64 }
227 fn val_ty(&self, v: &'ll Value) -> &'ll Type {
233 pub fn i8_llcx(llcx: &llvm::Context) -> &Type {
234 unsafe { llvm::LLVMInt8TypeInContext(llcx) }
237 // Creates an integer type with the given number of bits, e.g., i24
238 pub fn ix_llcx(llcx: &llvm::Context, num_bits: u64) -> &Type {
239 unsafe { llvm::LLVMIntTypeInContext(llcx, num_bits as c_uint) }
242 pub fn i8p_llcx(llcx: &llvm::Context) -> &Type {
243 Type::i8_llcx(llcx).ptr_to()
246 fn ptr_to(&self) -> &Type {
247 unsafe { llvm::LLVMPointerType(&self, 0) }
251 impl LayoutTypeMethods<'tcx> for CodegenCx<'ll, 'tcx> {
252 fn backend_type(&self, layout: TyAndLayout<'tcx>) -> &'ll Type {
253 layout.llvm_type(self)
255 fn immediate_backend_type(&self, layout: TyAndLayout<'tcx>) -> &'ll Type {
256 layout.immediate_llvm_type(self)
258 fn is_backend_immediate(&self, layout: TyAndLayout<'tcx>) -> bool {
259 layout.is_llvm_immediate()
261 fn is_backend_scalar_pair(&self, layout: TyAndLayout<'tcx>) -> bool {
262 layout.is_llvm_scalar_pair()
264 fn backend_field_index(&self, layout: TyAndLayout<'tcx>, index: usize) -> u64 {
265 layout.llvm_field_index(index)
267 fn scalar_pair_element_backend_type(
269 layout: TyAndLayout<'tcx>,
273 layout.scalar_pair_element_llvm_type(self, index, immediate)
275 fn cast_backend_type(&self, ty: &CastTarget) -> &'ll Type {
278 fn fn_ptr_backend_type(&self, fn_abi: &FnAbi<'tcx, Ty<'tcx>>) -> &'ll Type {
279 fn_abi.ptr_to_llvm_type(self)
281 fn reg_backend_type(&self, ty: &Reg) -> &'ll Type {