1 #![allow(non_snake_case)]
3 pub use self::AtomicRmwBinOp::*;
4 pub use self::CallConv::*;
5 pub use self::CodeGenOptSize::*;
6 pub use self::IntPredicate::*;
7 pub use self::Linkage::*;
8 pub use self::MetadataType::*;
9 pub use self::RealPredicate::*;
12 use rustc_data_structures::small_c_str::SmallCStr;
13 use rustc_llvm::RustString;
14 use std::cell::RefCell;
15 use std::ffi::{CStr, CString};
16 use std::str::FromStr;
17 use std::string::FromUtf8Error;
26 pub fn into_result(self) -> Result<(), ()> {
28 LLVMRustResult::Success => Ok(()),
29 LLVMRustResult::Failure => Err(()),
34 pub fn AddFunctionAttributes<'ll>(llfn: &'ll Value, idx: AttributePlace, attrs: &[&'ll Attribute]) {
36 LLVMRustAddFunctionAttributes(llfn, idx.as_uint(), attrs.as_ptr(), attrs.len());
40 pub fn AddCallSiteAttributes<'ll>(
43 attrs: &[&'ll Attribute],
46 LLVMRustAddCallSiteAttributes(callsite, idx.as_uint(), attrs.as_ptr(), attrs.len());
50 pub fn CreateAttrStringValue<'ll>(llcx: &'ll Context, attr: &str, value: &str) -> &'ll Attribute {
52 LLVMCreateStringAttribute(
55 attr.len().try_into().unwrap(),
56 value.as_ptr().cast(),
57 value.len().try_into().unwrap(),
62 pub fn CreateAttrString<'ll>(llcx: &'ll Context, attr: &str) -> &'ll Attribute {
64 LLVMCreateStringAttribute(
67 attr.len().try_into().unwrap(),
74 pub fn CreateAlignmentAttr(llcx: &Context, bytes: u64) -> &Attribute {
75 unsafe { LLVMRustCreateAlignmentAttr(llcx, bytes) }
78 pub fn CreateDereferenceableAttr(llcx: &Context, bytes: u64) -> &Attribute {
79 unsafe { LLVMRustCreateDereferenceableAttr(llcx, bytes) }
82 pub fn CreateDereferenceableOrNullAttr(llcx: &Context, bytes: u64) -> &Attribute {
83 unsafe { LLVMRustCreateDereferenceableOrNullAttr(llcx, bytes) }
86 pub fn CreateByValAttr<'ll>(llcx: &'ll Context, ty: &'ll Type) -> &'ll Attribute {
87 unsafe { LLVMRustCreateByValAttr(llcx, ty) }
90 pub fn CreateStructRetAttr<'ll>(llcx: &'ll Context, ty: &'ll Type) -> &'ll Attribute {
91 unsafe { LLVMRustCreateStructRetAttr(llcx, ty) }
94 pub fn CreateUWTableAttr(llcx: &Context, async_: bool) -> &Attribute {
95 unsafe { LLVMRustCreateUWTableAttr(llcx, async_) }
98 pub fn CreateAllocSizeAttr(llcx: &Context, size_arg: u32) -> &Attribute {
99 unsafe { LLVMRustCreateAllocSizeAttr(llcx, size_arg) }
102 pub fn CreateAllocKindAttr(llcx: &Context, kind_arg: AllocKindFlags) -> &Attribute {
103 unsafe { LLVMRustCreateAllocKindAttr(llcx, kind_arg.bits()) }
106 #[derive(Copy, Clone)]
107 pub enum AttributePlace {
113 impl AttributePlace {
114 pub fn as_uint(self) -> c_uint {
116 AttributePlace::ReturnValue => 0,
117 AttributePlace::Argument(i) => 1 + i,
118 AttributePlace::Function => !0,
123 #[derive(Copy, Clone, PartialEq)]
125 pub enum CodeGenOptSize {
126 CodeGenOptSizeNone = 0,
127 CodeGenOptSizeDefault = 1,
128 CodeGenOptSizeAggressive = 2,
131 impl FromStr for ArchiveKind {
134 fn from_str(s: &str) -> Result<Self, Self::Err> {
136 "gnu" => Ok(ArchiveKind::K_GNU),
137 "bsd" => Ok(ArchiveKind::K_BSD),
138 "darwin" => Ok(ArchiveKind::K_DARWIN),
139 "coff" => Ok(ArchiveKind::K_COFF),
145 pub fn SetInstructionCallConv(instr: &Value, cc: CallConv) {
147 LLVMSetInstructionCallConv(instr, cc as c_uint);
150 pub fn SetFunctionCallConv(fn_: &Value, cc: CallConv) {
152 LLVMSetFunctionCallConv(fn_, cc as c_uint);
156 // Externally visible symbols that might appear in multiple codegen units need to appear in
157 // their own comdat section so that the duplicates can be discarded at link time. This can for
158 // example happen for generics when using multiple codegen units. This function simply uses the
159 // value's name as the comdat value to make sure that it is in a 1-to-1 relationship to the
161 // For more details on COMDAT sections see e.g., https://www.airs.com/blog/archives/52
162 pub fn SetUniqueComdat(llmod: &Module, val: &Value) {
164 let name = get_value_name(val);
165 LLVMRustSetComdat(llmod, val, name.as_ptr().cast(), name.len());
169 pub fn SetUnnamedAddress(global: &Value, unnamed: UnnamedAddr) {
171 LLVMSetUnnamedAddress(global, unnamed);
175 pub fn set_thread_local_mode(global: &Value, mode: ThreadLocalMode) {
177 LLVMSetThreadLocalMode(global, mode);
182 /// Create an LLVM Attribute with no associated value.
183 pub fn create_attr(self, llcx: &Context) -> &Attribute {
184 unsafe { LLVMRustCreateAttrNoValue(llcx, self) }
189 /// Create an LLVM Attribute with these memory effects.
190 pub fn create_attr(self, llcx: &Context) -> &Attribute {
191 unsafe { LLVMRustCreateMemoryEffectsAttr(llcx, self) }
195 pub fn set_section(llglobal: &Value, section_name: &str) {
196 let section_name_cstr = CString::new(section_name).expect("unexpected CString error");
198 LLVMSetSection(llglobal, section_name_cstr.as_ptr());
202 pub fn add_global<'a>(llmod: &'a Module, ty: &'a Type, name: &str) -> &'a Value {
203 let name_cstr = CString::new(name).expect("unexpected CString error");
204 unsafe { LLVMAddGlobal(llmod, ty, name_cstr.as_ptr()) }
207 pub fn set_initializer(llglobal: &Value, constant_val: &Value) {
209 LLVMSetInitializer(llglobal, constant_val);
213 pub fn set_global_constant(llglobal: &Value, is_constant: bool) {
215 LLVMSetGlobalConstant(llglobal, if is_constant { ffi::True } else { ffi::False });
219 pub fn set_linkage(llglobal: &Value, linkage: Linkage) {
221 LLVMRustSetLinkage(llglobal, linkage);
225 pub fn set_visibility(llglobal: &Value, visibility: Visibility) {
227 LLVMRustSetVisibility(llglobal, visibility);
231 pub fn set_alignment(llglobal: &Value, bytes: usize) {
233 ffi::LLVMSetAlignment(llglobal, bytes as c_uint);
237 pub fn set_comdat(llmod: &Module, llglobal: &Value, name: &str) {
239 LLVMRustSetComdat(llmod, llglobal, name.as_ptr().cast(), name.len());
243 /// Safe wrapper around `LLVMGetParam`, because segfaults are no fun.
244 pub fn get_param(llfn: &Value, index: c_uint) -> &Value {
247 index < LLVMCountParams(llfn),
248 "out of bounds argument access: {} out of {} arguments",
250 LLVMCountParams(llfn)
252 LLVMGetParam(llfn, index)
256 /// Safe wrapper for `LLVMGetValueName2` into a byte slice
257 pub fn get_value_name(value: &Value) -> &[u8] {
260 let data = LLVMGetValueName2(value, &mut len);
261 std::slice::from_raw_parts(data.cast(), len)
265 /// Safe wrapper for `LLVMSetValueName2` from a byte slice
266 pub fn set_value_name(value: &Value, name: &[u8]) {
268 let data = name.as_ptr().cast();
269 LLVMSetValueName2(value, data, name.len());
273 pub fn build_string(f: impl FnOnce(&RustString)) -> Result<String, FromUtf8Error> {
274 let sr = RustString { bytes: RefCell::new(Vec::new()) };
276 String::from_utf8(sr.bytes.into_inner())
279 pub fn build_byte_buffer(f: impl FnOnce(&RustString)) -> Vec<u8> {
280 let sr = RustString { bytes: RefCell::new(Vec::new()) };
282 sr.bytes.into_inner()
285 pub fn twine_to_string(tr: &Twine) -> String {
287 build_string(|s| LLVMRustWriteTwineToString(tr, s)).expect("got a non-UTF8 Twine from LLVM")
291 pub fn last_error() -> Option<String> {
293 let cstr = LLVMRustGetLastError();
297 let err = CStr::from_ptr(cstr).to_bytes();
298 let err = String::from_utf8_lossy(err).to_string();
299 libc::free(cstr as *mut _);
305 pub struct OperandBundleDef<'a> {
306 pub raw: &'a mut ffi::OperandBundleDef<'a>,
309 impl<'a> OperandBundleDef<'a> {
310 pub fn new(name: &str, vals: &[&'a Value]) -> Self {
311 let name = SmallCStr::new(name);
313 LLVMRustBuildOperandBundleDef(name.as_ptr(), vals.as_ptr(), vals.len() as c_uint)
315 OperandBundleDef { raw: def }
319 impl Drop for OperandBundleDef<'_> {
322 LLVMRustFreeOperandBundleDef(&mut *(self.raw as *mut _));