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Merge pull request #1158 from bjorn3/isolate_mono_items_pr

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Isolate mono items
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bjorn3 2021-04-14 11:43:58 +02:00 committed by GitHub
commit 542e73e8ac
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13 changed files with 79 additions and 84 deletions
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44
Cargo.lock generated
View File

@ -39,16 +39,16 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "cranelift-bforest"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"cranelift-entity",
]
[[package]]
name = "cranelift-codegen"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"byteorder",
"cranelift-bforest",
@ -65,8 +65,8 @@ dependencies = [
[[package]]
name = "cranelift-codegen-meta"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"cranelift-codegen-shared",
"cranelift-entity",
@ -74,18 +74,18 @@ dependencies = [
[[package]]
name = "cranelift-codegen-shared"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
[[package]]
name = "cranelift-entity"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
[[package]]
name = "cranelift-frontend"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"cranelift-codegen",
"log",
@ -95,8 +95,8 @@ dependencies = [
[[package]]
name = "cranelift-jit"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"anyhow",
"cranelift-codegen",
@ -113,8 +113,8 @@ dependencies = [
[[package]]
name = "cranelift-module"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"anyhow",
"cranelift-codegen",
@ -125,8 +125,8 @@ dependencies = [
[[package]]
name = "cranelift-native"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"cranelift-codegen",
"target-lexicon",
@ -134,8 +134,8 @@ dependencies = [
[[package]]
name = "cranelift-object"
version = "0.72.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#8e43e96410a14143d368273cf1e708f8094bb8e0"
version = "0.73.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#45bee40f338c631bff4a799288101ba328c7ad36"
dependencies = [
"anyhow",
"cranelift-codegen",
@ -334,9 +334,9 @@ dependencies = [
[[package]]
name = "target-lexicon"
version = "0.11.2"
version = "0.12.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "422045212ea98508ae3d28025bc5aaa2bd4a9cdaecd442a08da2ee620ee9ea95"
checksum = "64ae3b39281e4b14b8123bdbaddd472b7dfe215e444181f2f9d2443c2444f834"
[[package]]
name = "thiserror"

4
Cargo.toml
View File

@ -9,12 +9,12 @@ crate-type = ["dylib"]
[dependencies]
# These have to be in sync with each other
cranelift-codegen = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main", features = ["unwind", "x64"] }
cranelift-codegen = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main", features = ["unwind"] }
cranelift-frontend = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main" }
cranelift-module = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main" }
cranelift-jit = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main", optional = true }
cranelift-object = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main" }
target-lexicon = "0.11.0"
target-lexicon = "0.12.0"
gimli = { version = "0.23.0", default-features = false, features = ["write"]}
object = { version = "0.23.0", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }

5
example/mini_core_hello_world.rs
View File

@ -296,6 +296,11 @@ fn main() {
unsafe {
global_asm_test();
}
// Both statics have a reference that points to the same anonymous allocation.
static REF1: &u8 = &42;
static REF2: &u8 = REF1;
assert_eq!(*REF1, *REF2);
}
#[cfg(all(not(jit), target_os = "linux"))]

1
scripts/test_rustc_tests.sh
View File

@ -47,6 +47,7 @@ rm src/test/ui/issues/issue-51947.rs # same
rm src/test/ui/numbers-arithmetic/saturating-float-casts.rs # intrinsic gives different but valid result
rm src/test/ui/mir/mir_misc_casts.rs # depends on deduplication of constants
rm src/test/ui/mir/mir_raw_fat_ptr.rs # same
rm src/test/ui/consts/issue-33537.rs # same
rm src/test/ui/async-await/async-fn-size-moved-locals.rs # -Cpanic=abort shrinks some generator by one byte
rm src/test/ui/async-await/async-fn-size-uninit-locals.rs # same
rm src/test/ui/generator/size-moved-locals.rs # same

12
src/base.rs
View File

@ -6,6 +6,7 @@ use rustc_middle::ty::adjustment::PointerCast;
use rustc_middle::ty::layout::FnAbiExt;
use rustc_target::abi::call::FnAbi;
use crate::constant::ConstantCx;
use crate::prelude::*;
pub(crate) fn codegen_fn<'tcx>(cx: &mut crate::CodegenCx<'_, 'tcx>, instance: Instance<'tcx>) {
@ -18,9 +19,9 @@ pub(crate) fn codegen_fn<'tcx>(cx: &mut crate::CodegenCx<'_, 'tcx>, instance: In
let mir = tcx.instance_mir(instance.def);
// Declare function
let name = tcx.symbol_name(instance).name.to_string();
let symbol_name = tcx.symbol_name(instance);
let sig = get_function_sig(tcx, cx.module.isa().triple(), instance);
let func_id = cx.module.declare_function(&name, Linkage::Local, &sig).unwrap();
let func_id = cx.module.declare_function(symbol_name.name, Linkage::Local, &sig).unwrap();
cx.cached_context.clear();
@ -46,8 +47,11 @@ pub(crate) fn codegen_fn<'tcx>(cx: &mut crate::CodegenCx<'_, 'tcx>, instance: In
cx,
tcx,
pointer_type,
vtables: FxHashMap::default(),
constants_cx: ConstantCx::new(),
instance,
symbol_name,
mir,
fn_abi: Some(FnAbi::of_instance(&RevealAllLayoutCx(tcx), instance, &[])),
@ -90,6 +94,8 @@ pub(crate) fn codegen_fn<'tcx>(cx: &mut crate::CodegenCx<'_, 'tcx>, instance: In
let source_info_set = fx.source_info_set;
let local_map = fx.local_map;
fx.constants_cx.finalize(fx.tcx, &mut *fx.cx.module);
// Store function in context
let context = &mut cx.cached_context;
context.func = func;
@ -151,7 +157,7 @@ pub(crate) fn codegen_fn<'tcx>(cx: &mut crate::CodegenCx<'_, 'tcx>, instance: In
debug_context.define_function(
instance,
func_id,
&name,
symbol_name.name,
isa,
context,
&source_info_set,

5
src/common.rs
View File

@ -1,8 +1,10 @@
use rustc_index::vec::IndexVec;
use rustc_middle::ty::SymbolName;
use rustc_target::abi::call::FnAbi;
use rustc_target::abi::{Integer, Primitive};
use rustc_target::spec::{HasTargetSpec, Target};
use crate::constant::ConstantCx;
use crate::prelude::*;
pub(crate) fn pointer_ty(tcx: TyCtxt<'_>) -> types::Type {
@ -230,8 +232,11 @@ pub(crate) struct FunctionCx<'m, 'clif, 'tcx> {
pub(crate) cx: &'clif mut crate::CodegenCx<'m, 'tcx>,
pub(crate) tcx: TyCtxt<'tcx>,
pub(crate) pointer_type: Type, // Cached from module
pub(crate) vtables: FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), DataId>,
pub(crate) constants_cx: ConstantCx,
pub(crate) instance: Instance<'tcx>,
pub(crate) symbol_name: SymbolName<'tcx>,
pub(crate) mir: &'tcx Body<'tcx>,
pub(crate) fn_abi: Option<FnAbi<'tcx, Ty<'tcx>>>,

48
src/constant.rs
View File

@ -2,7 +2,7 @@
use rustc_span::DUMMY_SP;
use rustc_data_structures::fx::FxHashSet;
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_errors::ErrorReported;
use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
use rustc_middle::mir::interpret::{
@ -13,12 +13,12 @@ use rustc_middle::ty::ConstKind;
use cranelift_codegen::ir::GlobalValueData;
use cranelift_module::*;
use crate::prelude::*;
use crate::{prelude::*, CodegenCx};
#[derive(Default)]
pub(crate) struct ConstantCx {
todo: Vec<TodoItem>,
done: FxHashSet<DataId>,
anon_allocs: FxHashMap<AllocId, DataId>,
}
#[derive(Copy, Clone, Debug)]
@ -28,6 +28,10 @@ enum TodoItem {
}
impl ConstantCx {
pub(crate) fn new() -> Self {
ConstantCx { todo: vec![], done: FxHashSet::default(), anon_allocs: FxHashMap::default() }
}
pub(crate) fn finalize(mut self, tcx: TyCtxt<'_>, module: &mut dyn Module) {
//println!("todo {:?}", self.todo);
define_all_allocs(tcx, module, &mut self);
@ -74,8 +78,10 @@ pub(crate) fn check_constants(fx: &mut FunctionCx<'_, '_, '_>) -> bool {
all_constants_ok
}
pub(crate) fn codegen_static(constants_cx: &mut ConstantCx, def_id: DefId) {
pub(crate) fn codegen_static(cx: &mut CodegenCx<'_, '_>, def_id: DefId) {
let mut constants_cx = ConstantCx::new();
constants_cx.todo.push(TodoItem::Static(def_id));
constants_cx.finalize(cx.tcx, &mut *cx.module);
}
pub(crate) fn codegen_tls_ref<'tcx>(
@ -182,9 +188,13 @@ pub(crate) fn codegen_const_value<'tcx>(
let alloc_kind = fx.tcx.get_global_alloc(ptr.alloc_id);
let base_addr = match alloc_kind {
Some(GlobalAlloc::Memory(alloc)) => {
fx.cx.constants_cx.todo.push(TodoItem::Alloc(ptr.alloc_id));
let data_id =
data_id_for_alloc_id(fx.cx.module, ptr.alloc_id, alloc.mutability);
fx.constants_cx.todo.push(TodoItem::Alloc(ptr.alloc_id));
let data_id = data_id_for_alloc_id(
&mut fx.constants_cx,
fx.cx.module,
ptr.alloc_id,
alloc.mutability,
);
let local_data_id =
fx.cx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
if fx.clif_comments.enabled() {
@ -243,8 +253,9 @@ fn pointer_for_allocation<'tcx>(
alloc: &'tcx Allocation,
) -> crate::pointer::Pointer {
let alloc_id = fx.tcx.create_memory_alloc(alloc);
fx.cx.constants_cx.todo.push(TodoItem::Alloc(alloc_id));
let data_id = data_id_for_alloc_id(fx.cx.module, alloc_id, alloc.mutability);
fx.constants_cx.todo.push(TodoItem::Alloc(alloc_id));
let data_id =
data_id_for_alloc_id(&mut fx.constants_cx, &mut *fx.cx.module, alloc_id, alloc.mutability);
let local_data_id = fx.cx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
if fx.clif_comments.enabled() {
@ -255,18 +266,14 @@ fn pointer_for_allocation<'tcx>(
}
fn data_id_for_alloc_id(
cx: &mut ConstantCx,
module: &mut dyn Module,
alloc_id: AllocId,
mutability: rustc_hir::Mutability,
) -> DataId {
module
.declare_data(
&format!(".L__alloc_{:x}", alloc_id.0),
Linkage::Local,
mutability == rustc_hir::Mutability::Mut,
false,
)
.unwrap()
*cx.anon_allocs.entry(alloc_id).or_insert_with(|| {
module.declare_anonymous_data(mutability == rustc_hir::Mutability::Mut, false).unwrap()
})
}
fn data_id_for_static(
@ -344,7 +351,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
GlobalAlloc::Memory(alloc) => alloc,
GlobalAlloc::Function(_) | GlobalAlloc::Static(_) => unreachable!(),
};
let data_id = data_id_for_alloc_id(module, alloc_id, alloc.mutability);
let data_id = data_id_for_alloc_id(cx, module, alloc_id, alloc.mutability);
(data_id, alloc, None)
}
TodoItem::Static(def_id) => {
@ -397,7 +404,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
}
GlobalAlloc::Memory(target_alloc) => {
cx.todo.push(TodoItem::Alloc(reloc));
data_id_for_alloc_id(module, reloc, target_alloc.mutability)
data_id_for_alloc_id(cx, module, reloc, target_alloc.mutability)
}
GlobalAlloc::Static(def_id) => {
if tcx.codegen_fn_attrs(def_id).flags.contains(CodegenFnAttrFlags::THREAD_LOCAL)
@ -419,8 +426,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
data_ctx.write_data_addr(offset.bytes() as u32, global_value, addend as i64);
}
// FIXME don't duplicate definitions in lazy jit mode
let _ = module.define_data(data_id, &data_ctx);
module.define_data(data_id, &data_ctx).unwrap();
cx.done.insert(data_id);
}

4
src/driver/aot.rs
View File

@ -121,9 +121,7 @@ fn module_codegen(
MonoItem::Fn(inst) => {
cx.tcx.sess.time("codegen fn", || crate::base::codegen_fn(&mut cx, inst));
}
MonoItem::Static(def_id) => {
crate::constant::codegen_static(&mut cx.constants_cx, def_id)
}
MonoItem::Static(def_id) => crate::constant::codegen_static(&mut cx, def_id),
MonoItem::GlobalAsm(item_id) => {
let item = cx.tcx.hir().item(item_id);
if let rustc_hir::ItemKind::GlobalAsm(rustc_hir::GlobalAsm { asm }) = item.kind {

2
src/driver/jit.rs
View File

@ -58,7 +58,7 @@ pub(super) fn run_jit(tcx: TyCtxt<'_>, backend_config: BackendConfig) -> ! {
CodegenMode::JitLazy => codegen_shim(&mut cx, inst),
},
MonoItem::Static(def_id) => {
crate::constant::codegen_static(&mut cx.constants_cx, def_id);
crate::constant::codegen_static(&mut cx, def_id);
}
MonoItem::GlobalAsm(item_id) => {
let item = cx.tcx.hir().item(item_id);

3
src/inline_asm.rs
View File

@ -92,8 +92,7 @@ pub(crate) fn codegen_inline_asm<'tcx>(
let inline_asm_index = fx.inline_asm_index;
fx.inline_asm_index += 1;
let asm_name =
format!("{}__inline_asm_{}", fx.tcx.symbol_name(fx.instance).name, inline_asm_index);
let asm_name = format!("{}__inline_asm_{}", fx.symbol_name, inline_asm_index);
let generated_asm = generate_asm_wrapper(
&asm_name,

6
src/lib.rs
View File

@ -36,7 +36,6 @@ use rustc_session::Session;
use cranelift_codegen::settings::{self, Configurable};
pub use crate::config::*;
use crate::constant::ConstantCx;
use crate::prelude::*;
mod abi;
@ -123,9 +122,7 @@ struct CodegenCx<'m, 'tcx: 'm> {
tcx: TyCtxt<'tcx>,
module: &'m mut dyn Module,
global_asm: String,
constants_cx: ConstantCx,
cached_context: Context,
vtables: FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), DataId>,
debug_context: Option<DebugContext<'tcx>>,
unwind_context: UnwindContext<'tcx>,
}
@ -148,16 +145,13 @@ impl<'m, 'tcx> CodegenCx<'m, 'tcx> {
tcx,
module,
global_asm: String::new(),
constants_cx: ConstantCx::default(),
cached_context: Context::new(),
vtables: FxHashMap::default(),
debug_context,
unwind_context,
}
}
fn finalize(self) -> (String, Option<DebugContext<'tcx>>, UnwindContext<'tcx>) {
self.constants_cx.finalize(self.tcx, self.module);
(self.global_asm, self.debug_context, self.unwind_context)
}
}

3
src/trap.rs
View File

@ -21,8 +21,7 @@ fn codegen_print(fx: &mut FunctionCx<'_, '_, '_>, msg: &str) {
fx.add_comment(puts, "puts");
}
let symbol_name = fx.tcx.symbol_name(fx.instance);
let real_msg = format!("trap at {:?} ({}): {}\0", fx.instance, symbol_name, msg);
let real_msg = format!("trap at {:?} ({}): {}\0", fx.instance, fx.symbol_name, msg);
let msg_ptr = fx.anonymous_str("trap", &real_msg);
fx.bcx.ins().call(puts, &[msg_ptr]);
}

26
src/vtable.rs
View File

@ -72,11 +72,11 @@ pub(crate) fn get_vtable<'tcx>(
layout: TyAndLayout<'tcx>,
trait_ref: Option<ty::PolyExistentialTraitRef<'tcx>>,
) -> Value {
let data_id = if let Some(data_id) = fx.cx.vtables.get(&(layout.ty, trait_ref)) {
let data_id = if let Some(data_id) = fx.vtables.get(&(layout.ty, trait_ref)) {
*data_id
} else {
let data_id = build_vtable(fx, layout, trait_ref);
fx.cx.vtables.insert((layout.ty, trait_ref), data_id);
fx.vtables.insert((layout.ty, trait_ref), data_id);
data_id
};
@ -139,27 +139,9 @@ fn build_vtable<'tcx>(
data_ctx.set_align(fx.tcx.data_layout.pointer_align.pref.bytes());
let data_id = fx
.cx
.module
.declare_data(
&format!(
"__vtable.{}.for.{:?}.{}",
trait_ref
.as_ref()
.map(|trait_ref| format!("{:?}", trait_ref.skip_binder()).into())
.unwrap_or(std::borrow::Cow::Borrowed("???")),
layout.ty,
fx.cx.vtables.len(),
),
Linkage::Local,
false,
false,
)
.unwrap();
let data_id = fx.cx.module.declare_anonymous_data(false, false).unwrap();
// FIXME don't duplicate definitions in lazy jit mode
let _ = fx.cx.module.define_data(data_id, &data_ctx);
fx.cx.module.define_data(data_id, &data_ctx).unwrap();
data_id
}