bjorn3
parent
934d56a646
commit
c8699076f9
@ -1,3 +1,6 @@
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//! Annotate the clif ir with comments describing how arguments are passed into the current function
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//! and where all locals are stored.
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use std::borrow::Cow;
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use rustc_middle::mir;
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@ -1,3 +1,5 @@
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//! Handling of everything related to the calling convention. Also fills `fx.local_map`.
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#[cfg(debug_assertions)]
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mod comments;
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mod pass_mode;
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@ -325,6 +327,7 @@ impl<'tcx, B: Backend + 'static> FunctionCx<'_, 'tcx, B> {
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}
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}
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/// Make a [`CPlace`] capable of holding value of the specified type.
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fn make_local_place<'tcx>(
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fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
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local: Local,
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@ -1,3 +1,5 @@
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//! Argument passing
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use crate::prelude::*;
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pub(super) use EmptySinglePair::*;
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@ -118,6 +120,7 @@ pub(super) fn get_pass_mode<'tcx>(tcx: TyCtxt<'tcx>, layout: TyAndLayout<'tcx>)
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}
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}
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/// Get a set of values to be passed as function arguments.
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pub(super) fn adjust_arg_for_abi<'tcx>(
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fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
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arg: CValue<'tcx>,
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@ -136,6 +139,8 @@ pub(super) fn adjust_arg_for_abi<'tcx>(
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}
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}
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/// Create a [`CValue`] containing the value of a function parameter adding clif function parameters
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/// as necessary.
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pub(super) fn cvalue_for_param<'tcx>(
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fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
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start_block: Block,
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@ -1,3 +1,5 @@
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//! Return value handling
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use crate::abi::pass_mode::*;
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use crate::prelude::*;
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@ -5,6 +7,7 @@ fn return_layout<'a, 'tcx>(fx: &mut FunctionCx<'a, 'tcx, impl Backend>) -> TyAnd
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fx.layout_of(fx.monomorphize(&fx.mir.local_decls[RETURN_PLACE].ty))
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}
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/// Can the given type be returned into an ssa var or does it need to be returned on the stack.
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pub(crate) fn can_return_to_ssa_var<'tcx>(
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tcx: TyCtxt<'tcx>,
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dest_layout: TyAndLayout<'tcx>,
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@ -16,6 +19,8 @@ pub(crate) fn can_return_to_ssa_var<'tcx>(
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}
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}
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/// Return a place where the return value of the current function can be written to. If necessary
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/// this adds an extra parameter pointing to where the return value needs to be stored.
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pub(super) fn codegen_return_param<'tcx>(
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fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
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ssa_analyzed: &rustc_index::vec::IndexVec<Local, crate::analyze::SsaKind>,
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@ -59,6 +64,8 @@ pub(super) fn codegen_return_param<'tcx>(
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ret_place
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}
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/// Invokes the closure with if necessary a value representing the return pointer. When the closure
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/// returns the call return value(s) if any are written to the correct place.
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pub(super) fn codegen_with_call_return_arg<'tcx, B: Backend, T>(
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fx: &mut FunctionCx<'_, 'tcx, B>,
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fn_sig: FnSig<'tcx>,
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@ -102,6 +109,7 @@ pub(super) fn codegen_with_call_return_arg<'tcx, B: Backend, T>(
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(call_inst, meta)
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}
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/// Codegen a return instruction with the right return value(s) if any.
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pub(crate) fn codegen_return(fx: &mut FunctionCx<'_, '_, impl Backend>) {
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match get_pass_mode(fx.tcx, return_layout(fx)) {
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PassMode::NoPass | PassMode::ByRef { size: Some(_) } => {
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@ -1,12 +1,5 @@
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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Allocator shim
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// Adapted from rustc
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use crate::prelude::*;
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//! SSA analysis
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use crate::prelude::*;
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use rustc_index::vec::IndexVec;
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//! Creation of ar archives like for the lib and staticlib crate type
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use std::collections::BTreeMap;
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use std::fs::File;
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use std::path::{Path, PathBuf};
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//! Abstraction around the object writing crate
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use std::convert::{TryFrom, TryInto};
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use rustc_data_structures::fx::FxHashMap;
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//! Codegen of a single function
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use rustc_index::vec::IndexVec;
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use rustc_middle::ty::adjustment::PointerCast;
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//! Various number casting functions
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use crate::prelude::*;
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pub(crate) fn clif_intcast(
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@ -1,4 +1,4 @@
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//! Replaces 128-bit operators with lang item calls
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//! Replaces 128-bit operators with lang item calls where necessary
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use crate::prelude::*;
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@ -302,7 +302,7 @@ pub(crate) struct FunctionCx<'clif, 'tcx, B: Backend + 'static> {
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/// When `#[track_caller]` is used, the implicit caller location is stored in this variable.
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pub(crate) caller_location: Option<CValue<'tcx>>,
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/// See [crate::optimize::code_layout] for more information.
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/// See [`crate::optimize::code_layout`] for more information.
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pub(crate) cold_blocks: EntitySet<Block>,
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pub(crate) clif_comments: crate::pretty_clif::CommentWriter,
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//! Handling of `static`s, `const`s and promoted allocations
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use rustc_span::DUMMY_SP;
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use rustc_data_structures::fx::FxHashSet;
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//! Write the debuginfo into an object file.
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use rustc_data_structures::fx::FxHashMap;
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use gimli::write::{Address, AttributeValue, EndianVec, Result, Sections, Writer};
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@ -55,6 +57,7 @@ pub(crate) enum DebugRelocName {
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Symbol(usize),
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}
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/// A [`Writer`] that collects all necessary relocations.
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#[derive(Clone)]
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pub(super) struct WriterRelocate {
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pub(super) relocs: Vec<DebugReloc>,
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@ -69,6 +72,7 @@ impl WriterRelocate {
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}
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}
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/// Perform the collected relocations to be usable for JIT usage.
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#[cfg(feature = "jit")]
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pub(super) fn relocate_for_jit(
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mut self,
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//! Line info generation (`.debug_line`)
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use std::ffi::OsStr;
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use std::path::{Component, Path};
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//! Handling of everything related to debuginfo.
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mod emit;
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mod line_info;
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mod unwind;
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//! Unwind info generation (`.eh_frame`)
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use crate::prelude::*;
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use cranelift_codegen::isa::{unwind::UnwindInfo, TargetIsa};
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//! Handling of enum discriminants
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//!
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//! Adapted from https://github.com/rust-lang/rust/blob/d760df5aea483aae041c9a241e7acacf48f75035/src/librustc_codegen_ssa/mir/place.rs
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use rustc_target::abi::{Int, TagEncoding, Variants};
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//! The AOT driver uses [`cranelift_object`] to write object files suitable for linking into a
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//! standalone executable.
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use std::path::PathBuf;
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use rustc_codegen_ssa::back::linker::LinkerInfo;
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//! The JIT driver uses [`cranelift_simplejit`] to JIT execute programs without writing any object
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//! files.
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use std::ffi::CString;
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use std::os::raw::{c_char, c_int};
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//! Drivers are responsible for calling [`codegen_mono_items`] and performing any further actions
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//! like JIT executing or writing object files.
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use std::any::Any;
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use rustc_middle::middle::cstore::EncodedMetadata;
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//! Codegen of [`asm!`] invocations.
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use crate::prelude::*;
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use std::fmt::Write;
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//! Emulation of a subset of the cpuid x86 instruction.
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use crate::prelude::*;
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/// Emulates a subset of the cpuid call.
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/// Emulates a subset of the cpuid x86 instruction.
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///
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/// This emulates an intel cpu with sse and sse2 support, but which doesn't support anything else.
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pub(crate) fn codegen_cpuid_call<'tcx>(
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//! Emulate LLVM intrinsics
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use crate::intrinsics::*;
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use crate::prelude::*;
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//! Codegen of intrinsics. This includes `extern "rust-intrinsic"`, `extern "platform-intrinsic"`
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//! and LLVM intrinsics that have symbol names starting with `llvm.`.
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mod cpuid;
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mod llvm;
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mod simd;
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//! Codegen `extern "platform-intrinsic"` intrinsics.
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use super::*;
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use crate::prelude::*;
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@ -1,3 +1,5 @@
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//! Reading and writing of the rustc metadata for rlibs and dylibs
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use std::convert::TryFrom;
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use std::fs::File;
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use std::path::Path;
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@ -1,3 +1,5 @@
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//! Various operations on integer and floating-point numbers
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use crate::prelude::*;
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pub(crate) fn bin_op_to_intcc(bin_op: BinOp, signed: bool) -> Option<IntCC> {
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//! Various optimizations specific to cg_clif
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use crate::prelude::*;
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mod code_layout;
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//! Defines [`Pointer`] which is used to improve the quality of the generated clif ir for pointer
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//! operations.
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use crate::prelude::*;
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use rustc_target::abi::Align;
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use cranelift_codegen::ir::immediates::Offset32;
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/// A pointer pointing either to a certain address, a certain stack slot or nothing.
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#[derive(Copy, Clone, Debug)]
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pub(crate) struct Pointer {
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base: PointerBase,
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//! This module provides the [CommentWriter] which makes it possible
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//! to add comments to the written cranelift ir.
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//!
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//! # Example
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//!
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//! ```clif
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//! test compile
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//! target x86_64
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//!
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//! function u0:0(i64, i64, i64) system_v {
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//! ; symbol _ZN119_$LT$example..IsNotEmpty$u20$as$u20$mini_core..FnOnce$LT$$LP$$RF$$u27$a$u20$$RF$$u27$b$u20$$u5b$u16$u5d$$C$$RP$$GT$$GT$9call_once17he85059d5e6a760a0E
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//! ; instance Instance { def: Item(DefId(0/0:29 ~ example[8787]::{{impl}}[0]::call_once[0])), substs: [ReErased, ReErased] }
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//! ; sig ([IsNotEmpty, (&&[u16],)]; c_variadic: false)->(u8, u8)
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//!
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//! ; ssa {_2: NOT_SSA, _4: NOT_SSA, _0: NOT_SSA, _3: (empty), _1: NOT_SSA}
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//! ; msg loc.idx param pass mode ssa flags ty
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//! ; ret _0 = v0 ByRef NOT_SSA (u8, u8)
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//! ; arg _1 = v1 ByRef NOT_SSA IsNotEmpty
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//! ; arg _2.0 = v2 ByVal(types::I64) NOT_SSA &&[u16]
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//!
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//! ss0 = explicit_slot 0 ; _1: IsNotEmpty size=0 align=1,8
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//! ss1 = explicit_slot 8 ; _2: (&&[u16],) size=8 align=8,8
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//! ss2 = explicit_slot 8 ; _4: (&&[u16],) size=8 align=8,8
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//! sig0 = (i64, i64, i64) system_v
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//! sig1 = (i64, i64, i64) system_v
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//! fn0 = colocated u0:6 sig1 ; Instance { def: Item(DefId(0/0:31 ~ example[8787]::{{impl}}[1]::call_mut[0])), substs: [ReErased, ReErased] }
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//!
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//! block0(v0: i64, v1: i64, v2: i64):
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//! v3 = stack_addr.i64 ss0
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//! v4 = stack_addr.i64 ss1
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//! store v2, v4
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//! v5 = stack_addr.i64 ss2
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//! jump block1
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//!
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//! block1:
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//! nop
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//! ; _3 = &mut _1
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//! ; _4 = _2
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//! v6 = load.i64 v4
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//! store v6, v5
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//! ;
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//! ; _0 = const mini_core::FnMut::call_mut(move _3, move _4)
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//! v7 = load.i64 v5
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//! call fn0(v0, v3, v7)
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//! jump block2
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//!
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//! block2:
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//! nop
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//! ;
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//! ; return
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//! return
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//! }
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//! ```
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use std::fmt;
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use cranelift_codegen::{
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@ -10,60 +64,6 @@ use rustc_session::config::OutputType;
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use crate::prelude::*;
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/// This module provides the [CommentWriter] which makes it possible
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/// to add comments to the written cranelift ir.
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///
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/// # Example
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///
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/// ```clif
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/// test compile
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/// target x86_64
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///
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/// function u0:0(i64, i64, i64) system_v {
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/// ; symbol _ZN119_$LT$example..IsNotEmpty$u20$as$u20$mini_core..FnOnce$LT$$LP$$RF$$u27$a$u20$$RF$$u27$b$u20$$u5b$u16$u5d$$C$$RP$$GT$$GT$9call_once17he85059d5e6a760a0E
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/// ; instance Instance { def: Item(DefId(0/0:29 ~ example[8787]::{{impl}}[0]::call_once[0])), substs: [ReErased, ReErased] }
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/// ; sig ([IsNotEmpty, (&&[u16],)]; c_variadic: false)->(u8, u8)
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///
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/// ; ssa {_2: NOT_SSA, _4: NOT_SSA, _0: NOT_SSA, _3: (empty), _1: NOT_SSA}
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/// ; msg loc.idx param pass mode ssa flags ty
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/// ; ret _0 = v0 ByRef NOT_SSA (u8, u8)
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/// ; arg _1 = v1 ByRef NOT_SSA IsNotEmpty
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/// ; arg _2.0 = v2 ByVal(types::I64) NOT_SSA &&[u16]
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///
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/// ss0 = explicit_slot 0 ; _1: IsNotEmpty size=0 align=1,8
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/// ss1 = explicit_slot 8 ; _2: (&&[u16],) size=8 align=8,8
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/// ss2 = explicit_slot 8 ; _4: (&&[u16],) size=8 align=8,8
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/// sig0 = (i64, i64, i64) system_v
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/// sig1 = (i64, i64, i64) system_v
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/// fn0 = colocated u0:6 sig1 ; Instance { def: Item(DefId(0/0:31 ~ example[8787]::{{impl}}[1]::call_mut[0])), substs: [ReErased, ReErased] }
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///
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/// block0(v0: i64, v1: i64, v2: i64):
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/// v3 = stack_addr.i64 ss0
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/// v4 = stack_addr.i64 ss1
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/// store v2, v4
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/// v5 = stack_addr.i64 ss2
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/// jump block1
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///
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/// block1:
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/// nop
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/// ; _3 = &mut _1
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/// ; _4 = _2
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/// v6 = load.i64 v4
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/// store v6, v5
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/// ;
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/// ; _0 = const mini_core::FnMut::call_mut(move _3, move _4)
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/// v7 = load.i64 v5
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/// call fn0(v0, v3, v7)
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/// jump block2
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///
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/// block2:
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/// nop
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/// ;
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/// ; return
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/// return
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/// }
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/// ```
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#[derive(Debug)]
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pub(crate) struct CommentWriter {
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global_comments: Vec<String>,
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@ -1,3 +1,5 @@
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//! Locating various executables part of a C toolchain.
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use std::path::PathBuf;
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use rustc_middle::bug;
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@ -1,3 +1,5 @@
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//! Helpers used to print a message and abort in case of certain panics and some detected UB.
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use crate::prelude::*;
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fn codegen_print(fx: &mut FunctionCx<'_, '_, impl cranelift_module::Backend>, msg: &str) {
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@ -1,3 +1,7 @@
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//! Codegen of the [`PointerCast::Unsize`] operation.
|
||||
//!
|
||||
//! [`PointerCast::Unsize`]: `rustc_middle::ty::adjustment::PointerCast::Unsize`
|
||||
|
||||
use crate::prelude::*;
|
||||
|
||||
// Adapted from https://github.com/rust-lang/rust/blob/2a663555ddf36f6b041445894a8c175cd1bc718c/src/librustc_codegen_ssa/base.rs#L159-L307
|
||||
|
||||
@ -1,3 +1,5 @@
|
||||
//! Definition of [`CValue`] and [`CPlace`]
|
||||
|
||||
use crate::prelude::*;
|
||||
|
||||
use cranelift_codegen::entity::EntityRef;
|
||||
|
||||
@ -1,4 +1,7 @@
|
||||
//! Codegen vtables and vtable accesses.
|
||||
//!
|
||||
//! See librustc_codegen_llvm/meth.rs for reference
|
||||
// FIXME dedup this logic between miri, cg_llvm and cg_clif
|
||||
|
||||
use crate::prelude::*;
|
||||
|
||||
|
||||
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Reference in New Issue
Block a user