Auto merge of #76964 - RalfJung:rollup-ybn06fs, r=RalfJung
Rollup of 15 pull requests Successful merges: - #76722 (Test and fix Send and Sync traits of BTreeMap artefacts) - #76766 (Extract some intrinsics out of rustc_codegen_llvm) - #76800 (Don't generate bootstrap usage unless it's needed) - #76809 (simplfy condition in ItemLowerer::with_trait_impl_ref()) - #76815 (Fix wording in mir doc) - #76818 (Don't compile regex at every function call.) - #76821 (Remove redundant nightly features) - #76823 (black_box: silence unused_mut warning when building with cfg(miri)) - #76825 (use `array_windows` instead of `windows` in the compiler) - #76827 (fix array_windows docs) - #76828 (use strip_prefix over starts_with and manual slicing based on pattern length (clippy::manual_strip)) - #76840 (Move to intra doc links in core/src/future) - #76845 (Use intra docs links in core::{ascii, option, str, pattern, hash::map}) - #76853 (Use intra-doc links in library/core/src/task/wake.rs) - #76871 (support panic=abort in Miri) Failed merges: r? `@ghost`
This commit is contained in:
commit
41507ed0d5
51 changed files with 862 additions and 697 deletions
|
@ -8,8 +8,6 @@
|
|||
#![feature(or_patterns)]
|
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#![feature(trusted_len)]
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#![feature(associated_type_bounds)]
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#![feature(const_fn)] // for rustc_index::newtype_index
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||||
#![feature(const_panic)] // for rustc_index::newtype_index
|
||||
#![recursion_limit = "256"]
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|
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//! This crate contains codegen code that is used by all codegen backends (LLVM and others).
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|
|
|
@ -687,7 +687,8 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
|
|||
})
|
||||
.collect();
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||||
|
||||
bx.codegen_intrinsic_call(
|
||||
Self::codegen_intrinsic_call(
|
||||
&mut bx,
|
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*instance.as_ref().unwrap(),
|
||||
&fn_abi,
|
||||
&args,
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||||
|
|
596
compiler/rustc_codegen_ssa/src/mir/intrinsic.rs
Normal file
596
compiler/rustc_codegen_ssa/src/mir/intrinsic.rs
Normal file
|
@ -0,0 +1,596 @@
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|||
use super::operand::{OperandRef, OperandValue};
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use super::place::PlaceRef;
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use super::FunctionCx;
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use crate::common::{span_invalid_monomorphization_error, IntPredicate};
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use crate::glue;
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use crate::traits::*;
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use crate::MemFlags;
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use rustc_middle::ty::{self, Ty, TyCtxt};
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use rustc_span::{sym, Span};
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use rustc_target::abi::call::{FnAbi, PassMode};
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fn copy_intrinsic<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
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bx: &mut Bx,
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allow_overlap: bool,
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volatile: bool,
|
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ty: Ty<'tcx>,
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dst: Bx::Value,
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src: Bx::Value,
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count: Bx::Value,
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) {
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let layout = bx.layout_of(ty);
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let size = layout.size;
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let align = layout.align.abi;
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let size = bx.mul(bx.const_usize(size.bytes()), count);
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let flags = if volatile { MemFlags::VOLATILE } else { MemFlags::empty() };
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if allow_overlap {
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bx.memmove(dst, align, src, align, size, flags);
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} else {
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bx.memcpy(dst, align, src, align, size, flags);
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}
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}
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|
||||
fn memset_intrinsic<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
|
||||
bx: &mut Bx,
|
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volatile: bool,
|
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ty: Ty<'tcx>,
|
||||
dst: Bx::Value,
|
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val: Bx::Value,
|
||||
count: Bx::Value,
|
||||
) {
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let layout = bx.layout_of(ty);
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let size = layout.size;
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let align = layout.align.abi;
|
||||
let size = bx.mul(bx.const_usize(size.bytes()), count);
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let flags = if volatile { MemFlags::VOLATILE } else { MemFlags::empty() };
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bx.memset(dst, val, size, align, flags);
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}
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|
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impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
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pub fn codegen_intrinsic_call(
|
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bx: &mut Bx,
|
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instance: ty::Instance<'tcx>,
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fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
|
||||
args: &[OperandRef<'tcx, Bx::Value>],
|
||||
llresult: Bx::Value,
|
||||
span: Span,
|
||||
) {
|
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let callee_ty = instance.ty(bx.tcx(), ty::ParamEnv::reveal_all());
|
||||
|
||||
let (def_id, substs) = match *callee_ty.kind() {
|
||||
ty::FnDef(def_id, substs) => (def_id, substs),
|
||||
_ => bug!("expected fn item type, found {}", callee_ty),
|
||||
};
|
||||
|
||||
let sig = callee_ty.fn_sig(bx.tcx());
|
||||
let sig = bx.tcx().normalize_erasing_late_bound_regions(ty::ParamEnv::reveal_all(), &sig);
|
||||
let arg_tys = sig.inputs();
|
||||
let ret_ty = sig.output();
|
||||
let name = bx.tcx().item_name(def_id);
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||||
let name_str = &*name.as_str();
|
||||
|
||||
let llret_ty = bx.backend_type(bx.layout_of(ret_ty));
|
||||
let result = PlaceRef::new_sized(llresult, fn_abi.ret.layout);
|
||||
|
||||
let llval = match name {
|
||||
sym::assume => {
|
||||
bx.assume(args[0].immediate());
|
||||
return;
|
||||
}
|
||||
sym::abort => {
|
||||
bx.abort();
|
||||
return;
|
||||
}
|
||||
|
||||
sym::unreachable => {
|
||||
return;
|
||||
}
|
||||
sym::va_start => bx.va_start(args[0].immediate()),
|
||||
sym::va_end => bx.va_end(args[0].immediate()),
|
||||
sym::size_of_val => {
|
||||
let tp_ty = substs.type_at(0);
|
||||
if let OperandValue::Pair(_, meta) = args[0].val {
|
||||
let (llsize, _) = glue::size_and_align_of_dst(bx, tp_ty, Some(meta));
|
||||
llsize
|
||||
} else {
|
||||
bx.const_usize(bx.layout_of(tp_ty).size.bytes())
|
||||
}
|
||||
}
|
||||
sym::min_align_of_val => {
|
||||
let tp_ty = substs.type_at(0);
|
||||
if let OperandValue::Pair(_, meta) = args[0].val {
|
||||
let (_, llalign) = glue::size_and_align_of_dst(bx, tp_ty, Some(meta));
|
||||
llalign
|
||||
} else {
|
||||
bx.const_usize(bx.layout_of(tp_ty).align.abi.bytes())
|
||||
}
|
||||
}
|
||||
sym::size_of
|
||||
| sym::pref_align_of
|
||||
| sym::min_align_of
|
||||
| sym::needs_drop
|
||||
| sym::type_id
|
||||
| sym::type_name
|
||||
| sym::variant_count => {
|
||||
let value = bx
|
||||
.tcx()
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.const_eval_instance(ty::ParamEnv::reveal_all(), instance, None)
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||||
.unwrap();
|
||||
OperandRef::from_const(bx, value, ret_ty).immediate_or_packed_pair(bx)
|
||||
}
|
||||
// Effectively no-op
|
||||
sym::forget => {
|
||||
return;
|
||||
}
|
||||
sym::offset => {
|
||||
let ptr = args[0].immediate();
|
||||
let offset = args[1].immediate();
|
||||
bx.inbounds_gep(ptr, &[offset])
|
||||
}
|
||||
sym::arith_offset => {
|
||||
let ptr = args[0].immediate();
|
||||
let offset = args[1].immediate();
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bx.gep(ptr, &[offset])
|
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}
|
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|
||||
sym::copy_nonoverlapping => {
|
||||
copy_intrinsic(
|
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bx,
|
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false,
|
||||
false,
|
||||
substs.type_at(0),
|
||||
args[1].immediate(),
|
||||
args[0].immediate(),
|
||||
args[2].immediate(),
|
||||
);
|
||||
return;
|
||||
}
|
||||
sym::copy => {
|
||||
copy_intrinsic(
|
||||
bx,
|
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true,
|
||||
false,
|
||||
substs.type_at(0),
|
||||
args[1].immediate(),
|
||||
args[0].immediate(),
|
||||
args[2].immediate(),
|
||||
);
|
||||
return;
|
||||
}
|
||||
sym::write_bytes => {
|
||||
memset_intrinsic(
|
||||
bx,
|
||||
false,
|
||||
substs.type_at(0),
|
||||
args[0].immediate(),
|
||||
args[1].immediate(),
|
||||
args[2].immediate(),
|
||||
);
|
||||
return;
|
||||
}
|
||||
|
||||
sym::volatile_copy_nonoverlapping_memory => {
|
||||
copy_intrinsic(
|
||||
bx,
|
||||
false,
|
||||
true,
|
||||
substs.type_at(0),
|
||||
args[0].immediate(),
|
||||
args[1].immediate(),
|
||||
args[2].immediate(),
|
||||
);
|
||||
return;
|
||||
}
|
||||
sym::volatile_copy_memory => {
|
||||
copy_intrinsic(
|
||||
bx,
|
||||
true,
|
||||
true,
|
||||
substs.type_at(0),
|
||||
args[0].immediate(),
|
||||
args[1].immediate(),
|
||||
args[2].immediate(),
|
||||
);
|
||||
return;
|
||||
}
|
||||
sym::volatile_set_memory => {
|
||||
memset_intrinsic(
|
||||
bx,
|
||||
true,
|
||||
substs.type_at(0),
|
||||
args[0].immediate(),
|
||||
args[1].immediate(),
|
||||
args[2].immediate(),
|
||||
);
|
||||
return;
|
||||
}
|
||||
sym::volatile_store => {
|
||||
let dst = args[0].deref(bx.cx());
|
||||
args[1].val.volatile_store(bx, dst);
|
||||
return;
|
||||
}
|
||||
sym::unaligned_volatile_store => {
|
||||
let dst = args[0].deref(bx.cx());
|
||||
args[1].val.unaligned_volatile_store(bx, dst);
|
||||
return;
|
||||
}
|
||||
sym::add_with_overflow
|
||||
| sym::sub_with_overflow
|
||||
| sym::mul_with_overflow
|
||||
| sym::wrapping_add
|
||||
| sym::wrapping_sub
|
||||
| sym::wrapping_mul
|
||||
| sym::unchecked_div
|
||||
| sym::unchecked_rem
|
||||
| sym::unchecked_shl
|
||||
| sym::unchecked_shr
|
||||
| sym::unchecked_add
|
||||
| sym::unchecked_sub
|
||||
| sym::unchecked_mul
|
||||
| sym::exact_div => {
|
||||
let ty = arg_tys[0];
|
||||
match int_type_width_signed(ty, bx.tcx()) {
|
||||
Some((_width, signed)) => match name {
|
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sym::add_with_overflow
|
||||
| sym::sub_with_overflow
|
||||
| sym::mul_with_overflow => {
|
||||
let op = match name {
|
||||
sym::add_with_overflow => OverflowOp::Add,
|
||||
sym::sub_with_overflow => OverflowOp::Sub,
|
||||
sym::mul_with_overflow => OverflowOp::Mul,
|
||||
_ => bug!(),
|
||||
};
|
||||
let (val, overflow) =
|
||||
bx.checked_binop(op, ty, args[0].immediate(), args[1].immediate());
|
||||
// Convert `i1` to a `bool`, and write it to the out parameter
|
||||
let val = bx.from_immediate(val);
|
||||
let overflow = bx.from_immediate(overflow);
|
||||
|
||||
let dest = result.project_field(bx, 0);
|
||||
bx.store(val, dest.llval, dest.align);
|
||||
let dest = result.project_field(bx, 1);
|
||||
bx.store(overflow, dest.llval, dest.align);
|
||||
|
||||
return;
|
||||
}
|
||||
sym::wrapping_add => bx.add(args[0].immediate(), args[1].immediate()),
|
||||
sym::wrapping_sub => bx.sub(args[0].immediate(), args[1].immediate()),
|
||||
sym::wrapping_mul => bx.mul(args[0].immediate(), args[1].immediate()),
|
||||
sym::exact_div => {
|
||||
if signed {
|
||||
bx.exactsdiv(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.exactudiv(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
sym::unchecked_div => {
|
||||
if signed {
|
||||
bx.sdiv(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.udiv(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
sym::unchecked_rem => {
|
||||
if signed {
|
||||
bx.srem(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.urem(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
sym::unchecked_shl => bx.shl(args[0].immediate(), args[1].immediate()),
|
||||
sym::unchecked_shr => {
|
||||
if signed {
|
||||
bx.ashr(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.lshr(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
sym::unchecked_add => {
|
||||
if signed {
|
||||
bx.unchecked_sadd(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.unchecked_uadd(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
sym::unchecked_sub => {
|
||||
if signed {
|
||||
bx.unchecked_ssub(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.unchecked_usub(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
sym::unchecked_mul => {
|
||||
if signed {
|
||||
bx.unchecked_smul(args[0].immediate(), args[1].immediate())
|
||||
} else {
|
||||
bx.unchecked_umul(args[0].immediate(), args[1].immediate())
|
||||
}
|
||||
}
|
||||
_ => bug!(),
|
||||
},
|
||||
None => {
|
||||
span_invalid_monomorphization_error(
|
||||
bx.tcx().sess,
|
||||
span,
|
||||
&format!(
|
||||
"invalid monomorphization of `{}` intrinsic: \
|
||||
expected basic integer type, found `{}`",
|
||||
name, ty
|
||||
),
|
||||
);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
sym::fadd_fast | sym::fsub_fast | sym::fmul_fast | sym::fdiv_fast | sym::frem_fast => {
|
||||
match float_type_width(arg_tys[0]) {
|
||||
Some(_width) => match name {
|
||||
sym::fadd_fast => bx.fadd_fast(args[0].immediate(), args[1].immediate()),
|
||||
sym::fsub_fast => bx.fsub_fast(args[0].immediate(), args[1].immediate()),
|
||||
sym::fmul_fast => bx.fmul_fast(args[0].immediate(), args[1].immediate()),
|
||||
sym::fdiv_fast => bx.fdiv_fast(args[0].immediate(), args[1].immediate()),
|
||||
sym::frem_fast => bx.frem_fast(args[0].immediate(), args[1].immediate()),
|
||||
_ => bug!(),
|
||||
},
|
||||
None => {
|
||||
span_invalid_monomorphization_error(
|
||||
bx.tcx().sess,
|
||||
span,
|
||||
&format!(
|
||||
"invalid monomorphization of `{}` intrinsic: \
|
||||
expected basic float type, found `{}`",
|
||||
name, arg_tys[0]
|
||||
),
|
||||
);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
sym::float_to_int_unchecked => {
|
||||
if float_type_width(arg_tys[0]).is_none() {
|
||||
span_invalid_monomorphization_error(
|
||||
bx.tcx().sess,
|
||||
span,
|
||||
&format!(
|
||||
"invalid monomorphization of `float_to_int_unchecked` \
|
||||
intrinsic: expected basic float type, \
|
||||
found `{}`",
|
||||
arg_tys[0]
|
||||
),
|
||||
);
|
||||
return;
|
||||
}
|
||||
let (_width, signed) = match int_type_width_signed(ret_ty, bx.tcx()) {
|
||||
Some(pair) => pair,
|
||||
None => {
|
||||
span_invalid_monomorphization_error(
|
||||
bx.tcx().sess,
|
||||
span,
|
||||
&format!(
|
||||
"invalid monomorphization of `float_to_int_unchecked` \
|
||||
intrinsic: expected basic integer type, \
|
||||
found `{}`",
|
||||
ret_ty
|
||||
),
|
||||
);
|
||||
return;
|
||||
}
|
||||
};
|
||||
if signed {
|
||||
bx.fptosi(args[0].immediate(), llret_ty)
|
||||
} else {
|
||||
bx.fptoui(args[0].immediate(), llret_ty)
|
||||
}
|
||||
}
|
||||
|
||||
sym::discriminant_value => {
|
||||
if ret_ty.is_integral() {
|
||||
args[0].deref(bx.cx()).codegen_get_discr(bx, ret_ty)
|
||||
} else {
|
||||
span_bug!(span, "Invalid discriminant type for `{:?}`", arg_tys[0])
|
||||
}
|
||||
}
|
||||
|
||||
// This requires that atomic intrinsics follow a specific naming pattern:
|
||||
// "atomic_<operation>[_<ordering>]", and no ordering means SeqCst
|
||||
name if name_str.starts_with("atomic_") => {
|
||||
use crate::common::AtomicOrdering::*;
|
||||
use crate::common::{AtomicRmwBinOp, SynchronizationScope};
|
||||
|
||||
let split: Vec<&str> = name_str.split('_').collect();
|
||||
|
||||
let is_cxchg = split[1] == "cxchg" || split[1] == "cxchgweak";
|
||||
let (order, failorder) = match split.len() {
|
||||
2 => (SequentiallyConsistent, SequentiallyConsistent),
|
||||
3 => match split[2] {
|
||||
"unordered" => (Unordered, Unordered),
|
||||
"relaxed" => (Monotonic, Monotonic),
|
||||
"acq" => (Acquire, Acquire),
|
||||
"rel" => (Release, Monotonic),
|
||||
"acqrel" => (AcquireRelease, Acquire),
|
||||
"failrelaxed" if is_cxchg => (SequentiallyConsistent, Monotonic),
|
||||
"failacq" if is_cxchg => (SequentiallyConsistent, Acquire),
|
||||
_ => bx.sess().fatal("unknown ordering in atomic intrinsic"),
|
||||
},
|
||||
4 => match (split[2], split[3]) {
|
||||
("acq", "failrelaxed") if is_cxchg => (Acquire, Monotonic),
|
||||
("acqrel", "failrelaxed") if is_cxchg => (AcquireRelease, Monotonic),
|
||||
_ => bx.sess().fatal("unknown ordering in atomic intrinsic"),
|
||||
},
|
||||
_ => bx.sess().fatal("Atomic intrinsic not in correct format"),
|
||||
};
|
||||
|
||||
let invalid_monomorphization = |ty| {
|
||||
span_invalid_monomorphization_error(
|
||||
bx.tcx().sess,
|
||||
span,
|
||||
&format!(
|
||||
"invalid monomorphization of `{}` intrinsic: \
|
||||
expected basic integer type, found `{}`",
|
||||
name, ty
|
||||
),
|
||||
);
|
||||
};
|
||||
|
||||
match split[1] {
|
||||
"cxchg" | "cxchgweak" => {
|
||||
let ty = substs.type_at(0);
|
||||
if int_type_width_signed(ty, bx.tcx()).is_some() {
|
||||
let weak = split[1] == "cxchgweak";
|
||||
let pair = bx.atomic_cmpxchg(
|
||||
args[0].immediate(),
|
||||
args[1].immediate(),
|
||||
args[2].immediate(),
|
||||
order,
|
||||
failorder,
|
||||
weak,
|
||||
);
|
||||
let val = bx.extract_value(pair, 0);
|
||||
let success = bx.extract_value(pair, 1);
|
||||
let val = bx.from_immediate(val);
|
||||
let success = bx.from_immediate(success);
|
||||
|
||||
let dest = result.project_field(bx, 0);
|
||||
bx.store(val, dest.llval, dest.align);
|
||||
let dest = result.project_field(bx, 1);
|
||||
bx.store(success, dest.llval, dest.align);
|
||||
return;
|
||||
} else {
|
||||
return invalid_monomorphization(ty);
|
||||
}
|
||||
}
|
||||
|
||||
"load" => {
|
||||
let ty = substs.type_at(0);
|
||||
if int_type_width_signed(ty, bx.tcx()).is_some() {
|
||||
let size = bx.layout_of(ty).size;
|
||||
bx.atomic_load(args[0].immediate(), order, size)
|
||||
} else {
|
||||
return invalid_monomorphization(ty);
|
||||
}
|
||||
}
|
||||
|
||||
"store" => {
|
||||
let ty = substs.type_at(0);
|
||||
if int_type_width_signed(ty, bx.tcx()).is_some() {
|
||||
let size = bx.layout_of(ty).size;
|
||||
bx.atomic_store(args[1].immediate(), args[0].immediate(), order, size);
|
||||
return;
|
||||
} else {
|
||||
return invalid_monomorphization(ty);
|
||||
}
|
||||
}
|
||||
|
||||
"fence" => {
|
||||
bx.atomic_fence(order, SynchronizationScope::CrossThread);
|
||||
return;
|
||||
}
|
||||
|
||||
"singlethreadfence" => {
|
||||
bx.atomic_fence(order, SynchronizationScope::SingleThread);
|
||||
return;
|
||||
}
|
||||
|
||||
// These are all AtomicRMW ops
|
||||
op => {
|
||||
let atom_op = match op {
|
||||
"xchg" => AtomicRmwBinOp::AtomicXchg,
|
||||
"xadd" => AtomicRmwBinOp::AtomicAdd,
|
||||
"xsub" => AtomicRmwBinOp::AtomicSub,
|
||||
"and" => AtomicRmwBinOp::AtomicAnd,
|
||||
"nand" => AtomicRmwBinOp::AtomicNand,
|
||||
"or" => AtomicRmwBinOp::AtomicOr,
|
||||
"xor" => AtomicRmwBinOp::AtomicXor,
|
||||
"max" => AtomicRmwBinOp::AtomicMax,
|
||||
"min" => AtomicRmwBinOp::AtomicMin,
|
||||
"umax" => AtomicRmwBinOp::AtomicUMax,
|
||||
"umin" => AtomicRmwBinOp::AtomicUMin,
|
||||
_ => bx.sess().fatal("unknown atomic operation"),
|
||||
};
|
||||
|
||||
let ty = substs.type_at(0);
|
||||
if int_type_width_signed(ty, bx.tcx()).is_some() {
|
||||
bx.atomic_rmw(atom_op, args[0].immediate(), args[1].immediate(), order)
|
||||
} else {
|
||||
return invalid_monomorphization(ty);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
sym::nontemporal_store => {
|
||||
let dst = args[0].deref(bx.cx());
|
||||
args[1].val.nontemporal_store(bx, dst);
|
||||
return;
|
||||
}
|
||||
|
||||
sym::ptr_guaranteed_eq | sym::ptr_guaranteed_ne => {
|
||||
let a = args[0].immediate();
|
||||
let b = args[1].immediate();
|
||||
if name == sym::ptr_guaranteed_eq {
|
||||
bx.icmp(IntPredicate::IntEQ, a, b)
|
||||
} else {
|
||||
bx.icmp(IntPredicate::IntNE, a, b)
|
||||
}
|
||||
}
|
||||
|
||||
sym::ptr_offset_from => {
|
||||
let ty = substs.type_at(0);
|
||||
let pointee_size = bx.layout_of(ty).size;
|
||||
|
||||
// This is the same sequence that Clang emits for pointer subtraction.
|
||||
// It can be neither `nsw` nor `nuw` because the input is treated as
|
||||
// unsigned but then the output is treated as signed, so neither works.
|
||||
let a = args[0].immediate();
|
||||
let b = args[1].immediate();
|
||||
let a = bx.ptrtoint(a, bx.type_isize());
|
||||
let b = bx.ptrtoint(b, bx.type_isize());
|
||||
let d = bx.sub(a, b);
|
||||
let pointee_size = bx.const_usize(pointee_size.bytes());
|
||||
// this is where the signed magic happens (notice the `s` in `exactsdiv`)
|
||||
bx.exactsdiv(d, pointee_size)
|
||||
}
|
||||
|
||||
_ => {
|
||||
// Need to use backend-specific things in the implementation.
|
||||
bx.codegen_intrinsic_call(instance, fn_abi, args, llresult, span);
|
||||
return;
|
||||
}
|
||||
};
|
||||
|
||||
if !fn_abi.ret.is_ignore() {
|
||||
if let PassMode::Cast(ty) = fn_abi.ret.mode {
|
||||
let ptr_llty = bx.type_ptr_to(bx.cast_backend_type(&ty));
|
||||
let ptr = bx.pointercast(result.llval, ptr_llty);
|
||||
bx.store(llval, ptr, result.align);
|
||||
} else {
|
||||
OperandRef::from_immediate_or_packed_pair(bx, llval, result.layout)
|
||||
.val
|
||||
.store(bx, result);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Returns the width of an int Ty, and if it's signed or not
|
||||
// Returns None if the type is not an integer
|
||||
// FIXME: there’s multiple of this functions, investigate using some of the already existing
|
||||
// stuffs.
|
||||
fn int_type_width_signed(ty: Ty<'_>, tcx: TyCtxt<'_>) -> Option<(u64, bool)> {
|
||||
match ty.kind() {
|
||||
ty::Int(t) => Some((t.bit_width().unwrap_or(u64::from(tcx.sess.target.ptr_width)), true)),
|
||||
ty::Uint(t) => Some((t.bit_width().unwrap_or(u64::from(tcx.sess.target.ptr_width)), false)),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
|
||||
// Returns the width of a float Ty
|
||||
// Returns None if the type is not a float
|
||||
fn float_type_width(ty: Ty<'_>) -> Option<u64> {
|
||||
match ty.kind() {
|
||||
ty::Float(t) => Some(t.bit_width()),
|
||||
_ => None,
|
||||
}
|
||||
}
|
|
@ -486,6 +486,7 @@ mod block;
|
|||
pub mod constant;
|
||||
pub mod coverageinfo;
|
||||
pub mod debuginfo;
|
||||
mod intrinsic;
|
||||
pub mod operand;
|
||||
pub mod place;
|
||||
mod rvalue;
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue