a4bf9fbdbf
The resulting profile will include the crate name and will be stored in the `--out-dir` directory. This implementation makes it convenient to use LLVM time trace together with cargo, in the contrast to the previous implementation which would overwrite profiles or store them in `.cargo/registry/..`.
313 lines
10 KiB
Rust
313 lines
10 KiB
Rust
#![feature(rustc_private, decl_macro)]
|
|
#![cfg_attr(feature = "jit", feature(never_type, vec_into_raw_parts, once_cell))]
|
|
#![warn(rust_2018_idioms)]
|
|
#![warn(unused_lifetimes)]
|
|
#![warn(unreachable_pub)]
|
|
|
|
extern crate snap;
|
|
#[macro_use]
|
|
extern crate rustc_middle;
|
|
extern crate rustc_ast;
|
|
extern crate rustc_codegen_ssa;
|
|
extern crate rustc_data_structures;
|
|
extern crate rustc_errors;
|
|
extern crate rustc_fs_util;
|
|
extern crate rustc_hir;
|
|
extern crate rustc_incremental;
|
|
extern crate rustc_index;
|
|
extern crate rustc_interface;
|
|
extern crate rustc_metadata;
|
|
extern crate rustc_session;
|
|
extern crate rustc_span;
|
|
extern crate rustc_target;
|
|
|
|
// This prevents duplicating functions and statics that are already part of the host rustc process.
|
|
#[allow(unused_extern_crates)]
|
|
extern crate rustc_driver;
|
|
|
|
use std::any::Any;
|
|
|
|
use rustc_codegen_ssa::traits::CodegenBackend;
|
|
use rustc_codegen_ssa::CodegenResults;
|
|
use rustc_errors::ErrorReported;
|
|
use rustc_metadata::EncodedMetadata;
|
|
use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
|
|
use rustc_session::config::OutputFilenames;
|
|
use rustc_session::Session;
|
|
|
|
use cranelift_codegen::isa::TargetIsa;
|
|
use cranelift_codegen::settings::{self, Configurable};
|
|
|
|
pub use crate::config::*;
|
|
use crate::prelude::*;
|
|
|
|
mod abi;
|
|
mod allocator;
|
|
mod analyze;
|
|
mod archive;
|
|
mod base;
|
|
mod cast;
|
|
mod codegen_i128;
|
|
mod common;
|
|
mod compiler_builtins;
|
|
mod config;
|
|
mod constant;
|
|
mod debuginfo;
|
|
mod discriminant;
|
|
mod driver;
|
|
mod inline_asm;
|
|
mod intrinsics;
|
|
mod linkage;
|
|
mod main_shim;
|
|
mod metadata;
|
|
mod num;
|
|
mod optimize;
|
|
mod pointer;
|
|
mod pretty_clif;
|
|
mod toolchain;
|
|
mod trap;
|
|
mod unsize;
|
|
mod value_and_place;
|
|
mod vtable;
|
|
|
|
mod prelude {
|
|
pub(crate) use std::convert::{TryFrom, TryInto};
|
|
|
|
pub(crate) use rustc_span::{Span, FileNameDisplayPreference};
|
|
|
|
pub(crate) use rustc_hir::def_id::{DefId, LOCAL_CRATE};
|
|
pub(crate) use rustc_middle::bug;
|
|
pub(crate) use rustc_middle::mir::{self, *};
|
|
pub(crate) use rustc_middle::ty::layout::{self, LayoutOf, TyAndLayout};
|
|
pub(crate) use rustc_middle::ty::{
|
|
self, FloatTy, Instance, InstanceDef, IntTy, ParamEnv, Ty, TyCtxt, TypeAndMut,
|
|
TypeFoldable, UintTy,
|
|
};
|
|
pub(crate) use rustc_target::abi::{Abi, Scalar, Size, VariantIdx};
|
|
|
|
pub(crate) use rustc_data_structures::fx::FxHashMap;
|
|
|
|
pub(crate) use rustc_index::vec::Idx;
|
|
|
|
pub(crate) use cranelift_codegen::ir::condcodes::{FloatCC, IntCC};
|
|
pub(crate) use cranelift_codegen::ir::function::Function;
|
|
pub(crate) use cranelift_codegen::ir::types;
|
|
pub(crate) use cranelift_codegen::ir::{
|
|
AbiParam, Block, ExternalName, FuncRef, Inst, InstBuilder, MemFlags, Signature, SourceLoc,
|
|
StackSlot, StackSlotData, StackSlotKind, TrapCode, Type, Value,
|
|
};
|
|
pub(crate) use cranelift_codegen::isa::{self, CallConv};
|
|
pub(crate) use cranelift_codegen::Context;
|
|
pub(crate) use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext, Variable};
|
|
pub(crate) use cranelift_module::{self, DataContext, FuncId, Linkage, Module};
|
|
|
|
pub(crate) use crate::abi::*;
|
|
pub(crate) use crate::base::{codegen_operand, codegen_place};
|
|
pub(crate) use crate::cast::*;
|
|
pub(crate) use crate::common::*;
|
|
pub(crate) use crate::debuginfo::{DebugContext, UnwindContext};
|
|
pub(crate) use crate::pointer::Pointer;
|
|
pub(crate) use crate::trap::*;
|
|
pub(crate) use crate::value_and_place::{CPlace, CPlaceInner, CValue};
|
|
}
|
|
|
|
struct PrintOnPanic<F: Fn() -> String>(F);
|
|
impl<F: Fn() -> String> Drop for PrintOnPanic<F> {
|
|
fn drop(&mut self) {
|
|
if ::std::thread::panicking() {
|
|
println!("{}", (self.0)());
|
|
}
|
|
}
|
|
}
|
|
|
|
/// The codegen context holds any information shared between the codegen of individual functions
|
|
/// inside a single codegen unit with the exception of the Cranelift [`Module`](cranelift_module::Module).
|
|
struct CodegenCx<'tcx> {
|
|
tcx: TyCtxt<'tcx>,
|
|
global_asm: String,
|
|
cached_context: Context,
|
|
debug_context: Option<DebugContext<'tcx>>,
|
|
unwind_context: UnwindContext,
|
|
}
|
|
|
|
impl<'tcx> CodegenCx<'tcx> {
|
|
fn new(
|
|
tcx: TyCtxt<'tcx>,
|
|
backend_config: BackendConfig,
|
|
isa: &dyn TargetIsa,
|
|
debug_info: bool,
|
|
) -> Self {
|
|
assert_eq!(pointer_ty(tcx), isa.pointer_type());
|
|
|
|
let unwind_context =
|
|
UnwindContext::new(tcx, isa, matches!(backend_config.codegen_mode, CodegenMode::Aot));
|
|
let debug_context = if debug_info { Some(DebugContext::new(tcx, isa)) } else { None };
|
|
CodegenCx {
|
|
tcx,
|
|
global_asm: String::new(),
|
|
cached_context: Context::new(),
|
|
debug_context,
|
|
unwind_context,
|
|
}
|
|
}
|
|
}
|
|
|
|
pub struct CraneliftCodegenBackend {
|
|
pub config: Option<BackendConfig>,
|
|
}
|
|
|
|
impl CodegenBackend for CraneliftCodegenBackend {
|
|
fn init(&self, sess: &Session) {
|
|
use rustc_session::config::Lto;
|
|
match sess.lto() {
|
|
Lto::No | Lto::ThinLocal => {}
|
|
Lto::Thin | Lto::Fat => sess.warn("LTO is not supported. You may get a linker error."),
|
|
}
|
|
}
|
|
|
|
fn target_features(&self, _sess: &Session) -> Vec<rustc_span::Symbol> {
|
|
vec![]
|
|
}
|
|
|
|
fn print_version(&self) {
|
|
println!("Cranelift version: {}", cranelift_codegen::VERSION);
|
|
}
|
|
|
|
fn codegen_crate(
|
|
&self,
|
|
tcx: TyCtxt<'_>,
|
|
metadata: EncodedMetadata,
|
|
need_metadata_module: bool,
|
|
) -> Box<dyn Any> {
|
|
tcx.sess.abort_if_errors();
|
|
let config = if let Some(config) = self.config.clone() {
|
|
config
|
|
} else {
|
|
if !tcx.sess.unstable_options() && !tcx.sess.opts.cg.llvm_args.is_empty() {
|
|
tcx.sess.fatal("`-Z unstable-options` must be passed to allow configuring cg_clif");
|
|
}
|
|
BackendConfig::from_opts(&tcx.sess.opts.cg.llvm_args)
|
|
.unwrap_or_else(|err| tcx.sess.fatal(&err))
|
|
};
|
|
match config.codegen_mode {
|
|
CodegenMode::Aot => driver::aot::run_aot(tcx, config, metadata, need_metadata_module),
|
|
CodegenMode::Jit | CodegenMode::JitLazy => {
|
|
#[cfg(feature = "jit")]
|
|
let _: ! = driver::jit::run_jit(tcx, config);
|
|
|
|
#[cfg(not(feature = "jit"))]
|
|
tcx.sess.fatal("jit support was disabled when compiling rustc_codegen_cranelift");
|
|
}
|
|
}
|
|
}
|
|
|
|
fn join_codegen(
|
|
&self,
|
|
ongoing_codegen: Box<dyn Any>,
|
|
_sess: &Session,
|
|
_outputs: &OutputFilenames,
|
|
) -> Result<(CodegenResults, FxHashMap<WorkProductId, WorkProduct>), ErrorReported> {
|
|
Ok(*ongoing_codegen
|
|
.downcast::<(CodegenResults, FxHashMap<WorkProductId, WorkProduct>)>()
|
|
.unwrap())
|
|
}
|
|
|
|
fn link(
|
|
&self,
|
|
sess: &Session,
|
|
codegen_results: CodegenResults,
|
|
outputs: &OutputFilenames,
|
|
) -> Result<(), ErrorReported> {
|
|
use rustc_codegen_ssa::back::link::link_binary;
|
|
|
|
link_binary::<crate::archive::ArArchiveBuilder<'_>>(sess, &codegen_results, outputs)
|
|
}
|
|
}
|
|
|
|
fn target_triple(sess: &Session) -> target_lexicon::Triple {
|
|
match sess.target.llvm_target.parse() {
|
|
Ok(triple) => triple,
|
|
Err(err) => sess.fatal(&format!("target not recognized: {}", err)),
|
|
}
|
|
}
|
|
|
|
fn build_isa(sess: &Session, backend_config: &BackendConfig) -> Box<dyn isa::TargetIsa + 'static> {
|
|
use target_lexicon::BinaryFormat;
|
|
|
|
let target_triple = crate::target_triple(sess);
|
|
|
|
let mut flags_builder = settings::builder();
|
|
flags_builder.enable("is_pic").unwrap();
|
|
flags_builder.set("enable_probestack", "false").unwrap(); // __cranelift_probestack is not provided
|
|
let enable_verifier = if backend_config.enable_verifier { "true" } else { "false" };
|
|
flags_builder.set("enable_verifier", enable_verifier).unwrap();
|
|
|
|
let tls_model = match target_triple.binary_format {
|
|
BinaryFormat::Elf => "elf_gd",
|
|
BinaryFormat::Macho => "macho",
|
|
BinaryFormat::Coff => "coff",
|
|
_ => "none",
|
|
};
|
|
flags_builder.set("tls_model", tls_model).unwrap();
|
|
|
|
flags_builder.set("enable_simd", "true").unwrap();
|
|
|
|
flags_builder.set("enable_llvm_abi_extensions", "true").unwrap();
|
|
|
|
flags_builder.set("regalloc", &backend_config.regalloc).unwrap();
|
|
|
|
use rustc_session::config::OptLevel;
|
|
match sess.opts.optimize {
|
|
OptLevel::No => {
|
|
flags_builder.set("opt_level", "none").unwrap();
|
|
}
|
|
OptLevel::Less | OptLevel::Default => {}
|
|
OptLevel::Size | OptLevel::SizeMin | OptLevel::Aggressive => {
|
|
flags_builder.set("opt_level", "speed_and_size").unwrap();
|
|
}
|
|
}
|
|
|
|
let flags = settings::Flags::new(flags_builder);
|
|
|
|
let variant = cranelift_codegen::isa::BackendVariant::MachInst;
|
|
|
|
let isa_builder = match sess.opts.cg.target_cpu.as_deref() {
|
|
Some("native") => {
|
|
let builder = cranelift_native::builder_with_options(variant, true).unwrap();
|
|
builder
|
|
}
|
|
Some(value) => {
|
|
let mut builder =
|
|
cranelift_codegen::isa::lookup_variant(target_triple.clone(), variant)
|
|
.unwrap_or_else(|err| {
|
|
sess.fatal(&format!("can't compile for {}: {}", target_triple, err));
|
|
});
|
|
if let Err(_) = builder.enable(value) {
|
|
sess.fatal("the specified target cpu isn't currently supported by Cranelift.");
|
|
}
|
|
builder
|
|
}
|
|
None => {
|
|
let mut builder =
|
|
cranelift_codegen::isa::lookup_variant(target_triple.clone(), variant)
|
|
.unwrap_or_else(|err| {
|
|
sess.fatal(&format!("can't compile for {}: {}", target_triple, err));
|
|
});
|
|
if target_triple.architecture == target_lexicon::Architecture::X86_64 {
|
|
// Don't use "haswell" as the default, as it implies `has_lzcnt`.
|
|
// macOS CI is still at Ivy Bridge EP, so `lzcnt` is interpreted as `bsr`.
|
|
builder.enable("nehalem").unwrap();
|
|
}
|
|
builder
|
|
}
|
|
};
|
|
|
|
isa_builder.finish(flags)
|
|
}
|
|
|
|
/// This is the entrypoint for a hot plugged rustc_codegen_cranelift
|
|
#[no_mangle]
|
|
pub fn __rustc_codegen_backend() -> Box<dyn CodegenBackend> {
|
|
Box::new(CraneliftCodegenBackend { config: None })
|
|
}
|