DXR will be turned off on Tuesday, December 29th. It will redirect to Searchfox.
See the announcement on Discourse.

DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Git (4fb54ed484)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
#![allow(non_snake_case)]

pub use self::AtomicRmwBinOp::*;
pub use self::CallConv::*;
pub use self::CodeGenOptSize::*;
pub use self::IntPredicate::*;
pub use self::Linkage::*;
pub use self::MetadataType::*;
pub use self::RealPredicate::*;

use libc::c_uint;
use rustc_data_structures::small_c_str::SmallCStr;
use rustc_llvm::RustString;
use std::cell::RefCell;
use std::ffi::CStr;
use std::str::FromStr;
use std::string::FromUtf8Error;

pub mod archive_ro;
pub mod diagnostic;
mod ffi;

pub use self::ffi::*;

impl LLVMRustResult {
    pub fn into_result(self) -> Result<(), ()> {
        match self {
            LLVMRustResult::Success => Ok(()),
            LLVMRustResult::Failure => Err(()),
        }
    }
}

pub fn AddFunctionAttrStringValue(llfn: &'a Value, idx: AttributePlace, attr: &CStr, value: &CStr) {
    unsafe {
        LLVMRustAddFunctionAttrStringValue(llfn, idx.as_uint(), attr.as_ptr(), value.as_ptr())
    }
}

#[derive(Copy, Clone)]
pub enum AttributePlace {
    ReturnValue,
    Argument(u32),
    Function,
}

impl AttributePlace {
    pub fn as_uint(self) -> c_uint {
        match self {
            AttributePlace::ReturnValue => 0,
            AttributePlace::Argument(i) => 1 + i,
            AttributePlace::Function => !0,
        }
    }
}

#[derive(Copy, Clone, PartialEq)]
#[repr(C)]
pub enum CodeGenOptSize {
    CodeGenOptSizeNone = 0,
    CodeGenOptSizeDefault = 1,
    CodeGenOptSizeAggressive = 2,
}

impl FromStr for ArchiveKind {
    type Err = ();

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            "gnu" => Ok(ArchiveKind::K_GNU),
            "bsd" => Ok(ArchiveKind::K_BSD),
            "darwin" => Ok(ArchiveKind::K_DARWIN),
            "coff" => Ok(ArchiveKind::K_COFF),
            _ => Err(()),
        }
    }
}

pub fn SetInstructionCallConv(instr: &'a Value, cc: CallConv) {
    unsafe {
        LLVMSetInstructionCallConv(instr, cc as c_uint);
    }
}
pub fn SetFunctionCallConv(fn_: &'a Value, cc: CallConv) {
    unsafe {
        LLVMSetFunctionCallConv(fn_, cc as c_uint);
    }
}

// Externally visible symbols that might appear in multiple codegen units need to appear in
// their own comdat section so that the duplicates can be discarded at link time. This can for
// example happen for generics when using multiple codegen units. This function simply uses the
// value's name as the comdat value to make sure that it is in a 1-to-1 relationship to the
// function.
// For more details on COMDAT sections see e.g., http://www.airs.com/blog/archives/52
pub fn SetUniqueComdat(llmod: &Module, val: &'a Value) {
    unsafe {
        let name = get_value_name(val);
        LLVMRustSetComdat(llmod, val, name.as_ptr().cast(), name.len());
    }
}

pub fn UnsetComdat(val: &'a Value) {
    unsafe {
        LLVMRustUnsetComdat(val);
    }
}

pub fn SetUnnamedAddress(global: &'a Value, unnamed: UnnamedAddr) {
    unsafe {
        LLVMSetUnnamedAddress(global, unnamed);
    }
}

pub fn set_thread_local(global: &'a Value, is_thread_local: bool) {
    unsafe {
        LLVMSetThreadLocal(global, is_thread_local as Bool);
    }
}
pub fn set_thread_local_mode(global: &'a Value, mode: ThreadLocalMode) {
    unsafe {
        LLVMSetThreadLocalMode(global, mode);
    }
}

impl Attribute {
    pub fn apply_llfn(&self, idx: AttributePlace, llfn: &Value) {
        unsafe { LLVMRustAddFunctionAttribute(llfn, idx.as_uint(), *self) }
    }

    pub fn apply_callsite(&self, idx: AttributePlace, callsite: &Value) {
        unsafe { LLVMRustAddCallSiteAttribute(callsite, idx.as_uint(), *self) }
    }

    pub fn unapply_llfn(&self, idx: AttributePlace, llfn: &Value) {
        unsafe { LLVMRustRemoveFunctionAttributes(llfn, idx.as_uint(), *self) }
    }

    pub fn toggle_llfn(&self, idx: AttributePlace, llfn: &Value, set: bool) {
        if set {
            self.apply_llfn(idx, llfn);
        } else {
            self.unapply_llfn(idx, llfn);
        }
    }
}

// Memory-managed interface to object files.

pub struct ObjectFile {
    pub llof: &'static mut ffi::ObjectFile,
}

unsafe impl Send for ObjectFile {}

impl ObjectFile {
    // This will take ownership of llmb
    pub fn new(llmb: &'static mut MemoryBuffer) -> Option<ObjectFile> {
        unsafe {
            let llof = LLVMCreateObjectFile(llmb)?;
            Some(ObjectFile { llof })
        }
    }
}

impl Drop for ObjectFile {
    fn drop(&mut self) {
        unsafe {
            LLVMDisposeObjectFile(&mut *(self.llof as *mut _));
        }
    }
}

// Memory-managed interface to section iterators.

pub struct SectionIter<'a> {
    pub llsi: &'a mut SectionIterator<'a>,
}

impl Drop for SectionIter<'a> {
    fn drop(&mut self) {
        unsafe {
            LLVMDisposeSectionIterator(&mut *(self.llsi as *mut _));
        }
    }
}

pub fn mk_section_iter(llof: &ffi::ObjectFile) -> SectionIter<'_> {
    unsafe { SectionIter { llsi: LLVMGetSections(llof) } }
}

/// Safe wrapper around `LLVMGetParam`, because segfaults are no fun.
pub fn get_param(llfn: &Value, index: c_uint) -> &Value {
    unsafe {
        assert!(
            index < LLVMCountParams(llfn),
            "out of bounds argument access: {} out of {} arguments",
            index,
            LLVMCountParams(llfn)
        );
        LLVMGetParam(llfn, index)
    }
}

/// Safe wrapper for `LLVMGetValueName2` into a byte slice
pub fn get_value_name(value: &Value) -> &[u8] {
    unsafe {
        let mut len = 0;
        let data = LLVMGetValueName2(value, &mut len);
        std::slice::from_raw_parts(data.cast(), len)
    }
}

/// Safe wrapper for `LLVMSetValueName2` from a byte slice
pub fn set_value_name(value: &Value, name: &[u8]) {
    unsafe {
        let data = name.as_ptr().cast();
        LLVMSetValueName2(value, data, name.len());
    }
}

pub fn build_string(f: impl FnOnce(&RustString)) -> Result<String, FromUtf8Error> {
    let sr = RustString { bytes: RefCell::new(Vec::new()) };
    f(&sr);
    String::from_utf8(sr.bytes.into_inner())
}

pub fn twine_to_string(tr: &Twine) -> String {
    unsafe {
        build_string(|s| LLVMRustWriteTwineToString(tr, s)).expect("got a non-UTF8 Twine from LLVM")
    }
}

pub fn last_error() -> Option<String> {
    unsafe {
        let cstr = LLVMRustGetLastError();
        if cstr.is_null() {
            None
        } else {
            let err = CStr::from_ptr(cstr).to_bytes();
            let err = String::from_utf8_lossy(err).to_string();
            libc::free(cstr as *mut _);
            Some(err)
        }
    }
}

pub struct OperandBundleDef<'a> {
    pub raw: &'a mut ffi::OperandBundleDef<'a>,
}

impl OperandBundleDef<'a> {
    pub fn new(name: &str, vals: &[&'a Value]) -> Self {
        let name = SmallCStr::new(name);
        let def = unsafe {
            LLVMRustBuildOperandBundleDef(name.as_ptr(), vals.as_ptr(), vals.len() as c_uint)
        };
        OperandBundleDef { raw: def }
    }
}

impl Drop for OperandBundleDef<'a> {
    fn drop(&mut self) {
        unsafe {
            LLVMRustFreeOperandBundleDef(&mut *(self.raw as *mut _));
        }
    }
}