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;
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 AddFunctionAttrStringValue(llfn: &'a Value, idx: AttributePlace, attr: &CStr, value: &CStr) {
36 LLVMRustAddFunctionAttrStringValue(llfn, idx.as_uint(), attr.as_ptr(), value.as_ptr())
40 #[derive(Copy, Clone)]
41 pub enum AttributePlace {
48 pub fn as_uint(self) -> c_uint {
50 AttributePlace::ReturnValue => 0,
51 AttributePlace::Argument(i) => 1 + i,
52 AttributePlace::Function => !0,
57 #[derive(Copy, Clone, PartialEq)]
59 pub enum CodeGenOptSize {
60 CodeGenOptSizeNone = 0,
61 CodeGenOptSizeDefault = 1,
62 CodeGenOptSizeAggressive = 2,
65 impl FromStr for ArchiveKind {
68 fn from_str(s: &str) -> Result<Self, Self::Err> {
70 "gnu" => Ok(ArchiveKind::K_GNU),
71 "bsd" => Ok(ArchiveKind::K_BSD),
72 "coff" => Ok(ArchiveKind::K_COFF),
78 pub fn SetInstructionCallConv(instr: &'a Value, cc: CallConv) {
80 LLVMSetInstructionCallConv(instr, cc as c_uint);
83 pub fn SetFunctionCallConv(fn_: &'a Value, cc: CallConv) {
85 LLVMSetFunctionCallConv(fn_, cc as c_uint);
89 // Externally visible symbols that might appear in multiple codegen units need to appear in
90 // their own comdat section so that the duplicates can be discarded at link time. This can for
91 // example happen for generics when using multiple codegen units. This function simply uses the
92 // value's name as the comdat value to make sure that it is in a 1-to-1 relationship to the
94 // For more details on COMDAT sections see e.g., http://www.airs.com/blog/archives/52
95 pub fn SetUniqueComdat(llmod: &Module, val: &'a Value) {
97 let name = get_value_name(val);
98 LLVMRustSetComdat(llmod, val, name.as_ptr().cast(), name.len());
102 pub fn UnsetComdat(val: &'a Value) {
104 LLVMRustUnsetComdat(val);
108 pub fn SetUnnamedAddr(global: &'a Value, unnamed: bool) {
110 LLVMSetUnnamedAddr(global, unnamed as Bool);
114 pub fn set_thread_local(global: &'a Value, is_thread_local: bool) {
116 LLVMSetThreadLocal(global, is_thread_local as Bool);
119 pub fn set_thread_local_mode(global: &'a Value, mode: ThreadLocalMode) {
121 LLVMSetThreadLocalMode(global, mode);
126 pub fn apply_llfn(&self, idx: AttributePlace, llfn: &Value) {
127 unsafe { LLVMRustAddFunctionAttribute(llfn, idx.as_uint(), *self) }
130 pub fn apply_callsite(&self, idx: AttributePlace, callsite: &Value) {
131 unsafe { LLVMRustAddCallSiteAttribute(callsite, idx.as_uint(), *self) }
134 pub fn unapply_llfn(&self, idx: AttributePlace, llfn: &Value) {
135 unsafe { LLVMRustRemoveFunctionAttributes(llfn, idx.as_uint(), *self) }
138 pub fn toggle_llfn(&self, idx: AttributePlace, llfn: &Value, set: bool) {
140 self.apply_llfn(idx, llfn);
142 self.unapply_llfn(idx, llfn);
147 // Memory-managed interface to object files.
149 pub struct ObjectFile {
150 pub llof: &'static mut ffi::ObjectFile,
153 unsafe impl Send for ObjectFile {}
156 // This will take ownership of llmb
157 pub fn new(llmb: &'static mut MemoryBuffer) -> Option<ObjectFile> {
159 let llof = LLVMCreateObjectFile(llmb)?;
160 Some(ObjectFile { llof })
165 impl Drop for ObjectFile {
168 LLVMDisposeObjectFile(&mut *(self.llof as *mut _));
173 // Memory-managed interface to section iterators.
175 pub struct SectionIter<'a> {
176 pub llsi: &'a mut SectionIterator<'a>,
179 impl Drop for SectionIter<'a> {
182 LLVMDisposeSectionIterator(&mut *(self.llsi as *mut _));
187 pub fn mk_section_iter(llof: &'a ffi::ObjectFile) -> SectionIter<'a> {
188 unsafe { SectionIter { llsi: LLVMGetSections(llof) } }
191 /// Safe wrapper around `LLVMGetParam`, because segfaults are no fun.
192 pub fn get_param(llfn: &'a Value, index: c_uint) -> &'a Value {
195 index < LLVMCountParams(llfn),
196 "out of bounds argument access: {} out of {} arguments",
198 LLVMCountParams(llfn)
200 LLVMGetParam(llfn, index)
204 /// Safe wrapper for `LLVMGetValueName2` into a byte slice
205 pub fn get_value_name(value: &'a Value) -> &'a [u8] {
208 let data = LLVMGetValueName2(value, &mut len);
209 std::slice::from_raw_parts(data.cast(), len)
213 /// Safe wrapper for `LLVMSetValueName2` from a byte slice
214 pub fn set_value_name(value: &Value, name: &[u8]) {
216 let data = name.as_ptr().cast();
217 LLVMSetValueName2(value, data, name.len());
221 pub fn build_string(f: impl FnOnce(&RustString)) -> Result<String, FromUtf8Error> {
222 let sr = RustString { bytes: RefCell::new(Vec::new()) };
224 String::from_utf8(sr.bytes.into_inner())
227 pub fn twine_to_string(tr: &Twine) -> String {
229 build_string(|s| LLVMRustWriteTwineToString(tr, s)).expect("got a non-UTF8 Twine from LLVM")
233 pub fn last_error() -> Option<String> {
235 let cstr = LLVMRustGetLastError();
239 let err = CStr::from_ptr(cstr).to_bytes();
240 let err = String::from_utf8_lossy(err).to_string();
241 libc::free(cstr as *mut _);
247 pub struct OperandBundleDef<'a> {
248 pub raw: &'a mut ffi::OperandBundleDef<'a>,
251 impl OperandBundleDef<'a> {
252 pub fn new(name: &str, vals: &[&'a Value]) -> Self {
253 let name = SmallCStr::new(name);
255 LLVMRustBuildOperandBundleDef(name.as_ptr(), vals.as_ptr(), vals.len() as c_uint)
257 OperandBundleDef { raw: def }
261 impl Drop for OperandBundleDef<'a> {
264 LLVMRustFreeOperandBundleDef(&mut *(self.raw as *mut _));