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Auto merge of rust-lang#121013 - oli-obk:rollup-fbzq8qz, r=oli-obk
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Rollup of 6 pull requests

Successful merges:

 - rust-lang#120486 (Use generic `NonZero` internally.)
 - rust-lang#120500 (Implement intrinsics with fallback bodies)
 - rust-lang#120530 (Be less confident when `dyn` suggestion is not checked for object safety)
 - rust-lang#120563 (Make `NonZero::get` generic.)
 - rust-lang#120847 (Continue compilation after check_mod_type_wf errors)
 - rust-lang#120959 (Remove good path delayed bugs)

r? `@ghost`
`@rustbot` modify labels: rollup
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@bors
bors committed Feb 13, 2024
2 parents bc1b9e0 + 56f78e0 commit 4272bb8
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Showing 427 changed files with 4,212 additions and 1,535 deletions.
6 changes: 3 additions & 3 deletions compiler/rustc_attr/src/builtin.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ use rustc_session::parse::feature_err;
use rustc_session::{RustcVersion, Session};
use rustc_span::hygiene::Transparency;
use rustc_span::{symbol::sym, symbol::Symbol, Span};
use std::num::NonZeroU32;
use std::num::NonZero;

use crate::session_diagnostics::{self, IncorrectReprFormatGenericCause};

Expand Down Expand Up @@ -113,7 +113,7 @@ pub enum StabilityLevel {
/// Reason for the current stability level.
reason: UnstableReason,
/// Relevant `rust-lang/rust` issue.
issue: Option<NonZeroU32>,
issue: Option<NonZero<u32>>,
is_soft: bool,
/// If part of a feature is stabilized and a new feature is added for the remaining parts,
/// then the `implied_by` attribute is used to indicate which now-stable feature previously
Expand Down Expand Up @@ -442,7 +442,7 @@ fn parse_unstability(sess: &Session, attr: &Attribute) -> Option<(Symbol, Stabil
// is a name/value pair string literal.
issue_num = match issue.unwrap().as_str() {
"none" => None,
issue => match issue.parse::<NonZeroU32>() {
issue => match issue.parse::<NonZero<u32>>() {
Ok(num) => Some(num),
Err(err) => {
sess.dcx().emit_err(
Expand Down
1 change: 1 addition & 0 deletions compiler/rustc_attr/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
#![allow(internal_features)]
#![feature(rustdoc_internals)]
#![doc(rust_logo)]
#![feature(generic_nonzero)]
#![feature(let_chains)]

#[macro_use]
Expand Down
13 changes: 3 additions & 10 deletions compiler/rustc_borrowck/src/type_check/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1650,16 +1650,9 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {

let func_ty = func.ty(body, self.infcx.tcx);
if let ty::FnDef(def_id, _) = *func_ty.kind() {
if self.tcx().is_intrinsic(def_id) {
match self.tcx().item_name(def_id) {
sym::simd_shuffle => {
if !matches!(args[2], Spanned { node: Operand::Constant(_), .. }) {
self.tcx()
.dcx()
.emit_err(SimdShuffleLastConst { span: term.source_info.span });
}
}
_ => {}
if let Some(sym::simd_shuffle) = self.tcx().intrinsic(def_id) {
if !matches!(args[2], Spanned { node: Operand::Constant(_), .. }) {
self.tcx().dcx().emit_err(SimdShuffleLastConst { span: term.source_info.span });
}
}
}
Expand Down
8 changes: 5 additions & 3 deletions compiler/rustc_codegen_cranelift/src/abi/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -387,15 +387,17 @@ pub(crate) fn codegen_terminator_call<'tcx>(

match instance.def {
InstanceDef::Intrinsic(_) => {
crate::intrinsics::codegen_intrinsic_call(
match crate::intrinsics::codegen_intrinsic_call(
fx,
instance,
args,
ret_place,
target,
source_info,
);
return;
) {
Ok(()) => return,
Err(instance) => Some(instance),
}
}
InstanceDef::DropGlue(_, None) => {
// empty drop glue - a nop.
Expand Down
72 changes: 27 additions & 45 deletions compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -268,7 +268,7 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
destination: CPlace<'tcx>,
target: Option<BasicBlock>,
source_info: mir::SourceInfo,
) {
) -> Result<(), Instance<'tcx>> {
let intrinsic = fx.tcx.item_name(instance.def_id());
let instance_args = instance.args;

Expand All @@ -295,8 +295,9 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
destination,
target,
source_info,
);
)?;
}
Ok(())
}

fn codegen_float_intrinsic_call<'tcx>(
Expand Down Expand Up @@ -430,25 +431,20 @@ fn codegen_regular_intrinsic_call<'tcx>(
ret: CPlace<'tcx>,
destination: Option<BasicBlock>,
source_info: mir::SourceInfo,
) {
) -> Result<(), Instance<'tcx>> {
assert_eq!(generic_args, instance.args);
let usize_layout = fx.layout_of(fx.tcx.types.usize);

match intrinsic {
sym::abort => {
fx.bcx.ins().trap(TrapCode::User(0));
return;
return Ok(());
}
sym::likely | sym::unlikely => {
intrinsic_args!(fx, args => (a); intrinsic);

ret.write_cvalue(fx, a);
}
sym::is_val_statically_known => {
intrinsic_args!(fx, args => (_a); intrinsic);

let res = fx.bcx.ins().iconst(types::I8, 0);
ret.write_cvalue(fx, CValue::by_val(res, ret.layout()));
}
sym::breakpoint => {
intrinsic_args!(fx, args => (); intrinsic);

Expand Down Expand Up @@ -697,7 +693,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
})
});
crate::base::codegen_panic_nounwind(fx, &msg_str, Some(source_info.span));
return;
return Ok(());
}
}
}
Expand Down Expand Up @@ -792,7 +788,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
if fx.tcx.is_compiler_builtins(LOCAL_CRATE) {
// special case for compiler-builtins to avoid having to patch it
crate::trap::trap_unimplemented(fx, "128bit atomics not yet supported");
return;
return Ok(());
} else {
fx.tcx
.dcx()
Expand All @@ -802,7 +798,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, ty);
return;
return Ok(());
}
}
let clif_ty = fx.clif_type(ty).unwrap();
Expand All @@ -823,7 +819,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
if fx.tcx.is_compiler_builtins(LOCAL_CRATE) {
// special case for compiler-builtins to avoid having to patch it
crate::trap::trap_unimplemented(fx, "128bit atomics not yet supported");
return;
return Ok(());
} else {
fx.tcx
.dcx()
Expand All @@ -833,7 +829,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, ty);
return;
return Ok(());
}
}

Expand All @@ -850,7 +846,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -872,7 +868,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}

Expand All @@ -895,7 +891,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -917,7 +913,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -939,7 +935,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -960,7 +956,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -981,7 +977,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -1002,7 +998,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -1023,7 +1019,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -1044,7 +1040,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -1065,7 +1061,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand All @@ -1086,7 +1082,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
ty::Uint(_) | ty::Int(_) | ty::RawPtr(..) => {}
_ => {
report_atomic_type_validation_error(fx, intrinsic, source_info.span, layout.ty);
return;
return Ok(());
}
}
let ty = fx.clif_type(layout.ty).unwrap();
Expand Down Expand Up @@ -1233,19 +1229,6 @@ fn codegen_regular_intrinsic_call<'tcx>(
ret.write_cvalue(fx, CValue::by_val(cmp, ret.layout()));
}

sym::const_allocate => {
intrinsic_args!(fx, args => (_size, _align); intrinsic);

// returns a null pointer at runtime.
let null = fx.bcx.ins().iconst(fx.pointer_type, 0);
ret.write_cvalue(fx, CValue::by_val(null, ret.layout()));
}

sym::const_deallocate => {
intrinsic_args!(fx, args => (_ptr, _size, _align); intrinsic);
// nop at runtime.
}

sym::black_box => {
intrinsic_args!(fx, args => (a); intrinsic);

Expand All @@ -1261,13 +1244,12 @@ fn codegen_regular_intrinsic_call<'tcx>(
);
}

_ => {
fx.tcx
.dcx()
.span_fatal(source_info.span, format!("unsupported intrinsic {}", intrinsic));
}
// Unimplemented intrinsics must have a fallback body. The fallback body is obtained
// by converting the `InstanceDef::Intrinsic` to an `InstanceDef::Item`.
_ => return Err(Instance::new(instance.def_id(), instance.args)),
}

let ret_block = fx.get_block(destination.unwrap());
fx.bcx.ins().jump(ret_block, &[]);
Ok(())
}
18 changes: 10 additions & 8 deletions compiler/rustc_codegen_gcc/src/intrinsic/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,7 @@ fn get_simple_intrinsic<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, name: Symbol) ->
}

impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
fn codegen_intrinsic_call(&mut self, instance: Instance<'tcx>, fn_abi: &FnAbi<'tcx, Ty<'tcx>>, args: &[OperandRef<'tcx, RValue<'gcc>>], llresult: RValue<'gcc>, span: Span) {
fn codegen_intrinsic_call(&mut self, instance: Instance<'tcx>, fn_abi: &FnAbi<'tcx, Ty<'tcx>>, args: &[OperandRef<'tcx, RValue<'gcc>>], llresult: RValue<'gcc>, span: Span) -> Result<(), Instance<'tcx>> {
let tcx = self.tcx;
let callee_ty = instance.ty(tcx, ty::ParamEnv::reveal_all());

Expand Down Expand Up @@ -137,7 +137,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
args[2].immediate(),
llresult,
);
return;
return Ok(());
}
sym::breakpoint => {
unimplemented!();
Expand Down Expand Up @@ -166,12 +166,12 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
sym::volatile_store => {
let dst = args[0].deref(self.cx());
args[1].val.volatile_store(self, dst);
return;
return Ok(());
}
sym::unaligned_volatile_store => {
let dst = args[0].deref(self.cx());
args[1].val.unaligned_volatile_store(self, dst);
return;
return Ok(());
}
sym::prefetch_read_data
| sym::prefetch_write_data
Expand Down Expand Up @@ -269,7 +269,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
},
None => {
tcx.dcx().emit_err(InvalidMonomorphization::BasicIntegerType { span, name, ty });
return;
return Ok(());
}
}
}
Expand Down Expand Up @@ -339,7 +339,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
extended_asm.set_volatile_flag(true);

// We have copied the value to `result` already.
return;
return Ok(());
}

sym::ptr_mask => {
Expand All @@ -357,11 +357,12 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
_ if name_str.starts_with("simd_") => {
match generic_simd_intrinsic(self, name, callee_ty, args, ret_ty, llret_ty, span) {
Ok(llval) => llval,
Err(()) => return,
Err(()) => return Ok(()),
}
}

_ => bug!("unknown intrinsic '{}'", name),
// Fall back to default body
_ => return Err(Instance::new(instance.def_id(), instance.args)),
};

if !fn_abi.ret.is_ignore() {
Expand All @@ -376,6 +377,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
.store(self, result);
}
}
Ok(())
}

fn abort(&mut self) {
Expand Down

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