mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge commit '3a9bf729322fb5035518f99b9d76a742bf7c124e' into sync_cg_clif-2023-12-19

Browse Source
This commit is contained in:
bjorn3 2023-12-19 12:46:39 +00:00
parent eeb3db1130
commit a4be90ed16
13 changed files with 223 additions and 115 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
build_system/tests.rs
View File

@ -232,6 +232,13 @@ const fn jit_bin(config: &'static str, source: &'static str, args: &'static str)
if runner.is_native {
let mut test_cmd = PORTABLE_SIMD.test(&runner.target_compiler, &runner.dirs);
test_cmd.arg("-q");
// FIXME remove after portable-simd update
test_cmd
.arg("--")
.arg("--skip")
.arg("core_simd::swizzle::simd_swizzle")
.arg("--skip")
.arg("core_simd::vector::Simd<T,N>::lanes");
spawn_and_wait(test_cmd);
}
}),

11
example/mini_core_hello_world.rs
View File

@ -337,17 +337,6 @@ struct ExternTypeWrapper {
static REF2: &u8 = REF1;
assert_eq!(*REF1, *REF2);
extern "C" {
type A;
}
fn main() {
let x: &A = unsafe { &*(1usize as *const A) };
assert_eq!(unsafe { intrinsics::size_of_val(x) }, 0);
assert_eq!(unsafe { intrinsics::min_align_of_val(x) }, 1);
}
#[repr(simd)]
struct V([f64; 2]);

22
patches/0001-portable-simd-Enable-the-exposed_provenance-feature.patch Normal file
View File

@ -0,0 +1,22 @@
From a101a43b795431ce617e7782afb451f4853afc00 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Thu, 7 Dec 2023 14:51:35 +0000
Subject: [PATCH] Enable the exposed_provenance feature
---
crates/core_simd/tests/pointers.rs | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/crates/core_simd/tests/pointers.rs b/crates/core_simd/tests/pointers.rs
index 0ae8f83..06620d6 100644
--- a/crates/core_simd/tests/pointers.rs
+++ b/crates/core_simd/tests/pointers.rs
@@ -1,4 +1,4 @@
-#![feature(portable_simd, strict_provenance)]
+#![feature(exposed_provenance, portable_simd, strict_provenance)]
use core_simd::simd::{Simd, SimdConstPtr, SimdMutPtr};
--
2.34.1

55
patches/stdlib-lock.toml
View File

@ -36,15 +36,18 @@ dependencies = [
[[package]]
name = "allocator-api2"
version = "0.2.15"
version = "0.2.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "56fc6cf8dc8c4158eed8649f9b8b0ea1518eb62b544fe9490d66fa0b349eafe9"
checksum = "0942ffc6dcaadf03badf6e6a2d0228460359d5e34b57ccdc720b7382dfbd5ec5"
[[package]]
name = "cc"
version = "1.0.79"
version = "1.0.83"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f"
checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
dependencies = [
"libc",
]
[[package]]
name = "cfg-if"
@ -58,9 +61,9 @@ dependencies = [
[[package]]
name = "compiler_builtins"
version = "0.1.103"
version = "0.1.104"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a3b73c3443a5fd2438d7ba4853c64e4c8efc2404a9e28a9234cc2d5eebc6c242"
checksum = "99c3f9035afc33f4358773239573f7d121099856753e1bbd2a6a5207098fc741"
dependencies = [
"cc",
"rustc-std-workspace-core",
@ -124,9 +127,9 @@ dependencies = [
[[package]]
name = "gimli"
version = "0.28.0"
version = "0.28.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6fb8d784f27acf97159b40fc4db5ecd8aa23b9ad5ef69cdd136d3bc80665f0c0"
checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-alloc",
@ -135,9 +138,9 @@ dependencies = [
[[package]]
name = "hashbrown"
version = "0.14.0"
version = "0.14.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
dependencies = [
"allocator-api2",
"compiler_builtins",
@ -147,9 +150,9 @@ dependencies = [
[[package]]
name = "hermit-abi"
version = "0.3.2"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "443144c8cdadd93ebf52ddb4056d257f5b52c04d3c804e657d19eb73fc33668b"
checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-alloc",
@ -167,9 +170,9 @@ dependencies = [
[[package]]
name = "memchr"
version = "2.5.0"
version = "2.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-core",
@ -189,9 +192,9 @@ dependencies = [
[[package]]
name = "object"
version = "0.32.0"
version = "0.32.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "77ac5bbd07aea88c60a577a1ce218075ffd59208b2d7ca97adf9bfc5aeb21ebe"
checksum = "9cf5f9dd3933bd50a9e1f149ec995f39ae2c496d31fd772c1fd45ebc27e902b0"
dependencies = [
"compiler_builtins",
"memchr",
@ -241,9 +244,9 @@ dependencies = [
[[package]]
name = "r-efi"
version = "4.2.0"
version = "4.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "575fc2d9b3da54adbdfaddf6eca48fec256d977c8630a1750b8991347d1ac911"
checksum = "0e244f96e03a3067f9e521d3167bd42657594cb8588c8d3a2db01545dc1af2e0"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-core",
@ -402,9 +405,9 @@ dependencies = [
[[package]]
name = "unicode-width"
version = "0.1.10"
version = "0.1.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
checksum = "e51733f11c9c4f72aa0c160008246859e340b00807569a0da0e7a1079b27ba85"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-core",
@ -419,6 +422,18 @@ dependencies = [
"compiler_builtins",
"core",
"libc",
"unwinding",
]
[[package]]
name = "unwinding"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "37a19a21a537f635c16c7576f22d0f2f7d63353c1337ad4ce0d8001c7952a25b"
dependencies = [
"compiler_builtins",
"gimli",
"rustc-std-workspace-core",
]
[[package]]

2
rust-toolchain
View File

@ -1,3 +1,3 @@
[toolchain]
channel = "nightly-2023-11-25"
channel = "nightly-2023-12-19"
components = ["rust-src", "rustc-dev", "llvm-tools"]

1
scripts/test_rustc_tests.sh
View File

@ -44,6 +44,7 @@ rm tests/ui/proc-macro/no-mangle-in-proc-macro-issue-111888.rs
# vendor intrinsics
rm tests/ui/sse2.rs # CodegenBackend::target_features not yet implemented
rm tests/ui/simd/array-type.rs # "Index argument for `simd_insert` is not a constant"
rm tests/ui/simd/masked-load-store.rs
# exotic linkages
rm tests/ui/issues/issue-33992.rs # unsupported linkages

16
src/base.rs
View File

@ -353,7 +353,7 @@ fn codegen_fn_body(fx: &mut FunctionCx<'_, '_, '_>, start_block: Block) {
fx,
rustc_hir::LangItem::PanicBoundsCheck,
&[index, len, location],
source_info.span,
Some(source_info.span),
);
}
AssertKind::MisalignedPointerDereference { ref required, ref found } => {
@ -365,7 +365,7 @@ fn codegen_fn_body(fx: &mut FunctionCx<'_, '_, '_>, start_block: Block) {
fx,
rustc_hir::LangItem::PanicMisalignedPointerDereference,
&[required, found, location],
source_info.span,
Some(source_info.span),
);
}
_ => {
@ -945,19 +945,19 @@ pub(crate) fn codegen_panic<'tcx>(
let msg_len = fx.bcx.ins().iconst(fx.pointer_type, i64::try_from(msg_str.len()).unwrap());
let args = [msg_ptr, msg_len, location];
codegen_panic_inner(fx, rustc_hir::LangItem::Panic, &args, source_info.span);
codegen_panic_inner(fx, rustc_hir::LangItem::Panic, &args, Some(source_info.span));
}
pub(crate) fn codegen_panic_nounwind<'tcx>(
fx: &mut FunctionCx<'_, '_, 'tcx>,
msg_str: &str,
source_info: mir::SourceInfo,
span: Option<Span>,
) {
let msg_ptr = fx.anonymous_str(msg_str);
let msg_len = fx.bcx.ins().iconst(fx.pointer_type, i64::try_from(msg_str.len()).unwrap());
let args = [msg_ptr, msg_len];
codegen_panic_inner(fx, rustc_hir::LangItem::PanicNounwind, &args, source_info.span);
codegen_panic_inner(fx, rustc_hir::LangItem::PanicNounwind, &args, span);
}
pub(crate) fn codegen_unwind_terminate<'tcx>(
@ -967,16 +967,16 @@ pub(crate) fn codegen_unwind_terminate<'tcx>(
) {
let args = [];
codegen_panic_inner(fx, reason.lang_item(), &args, source_info.span);
codegen_panic_inner(fx, reason.lang_item(), &args, Some(source_info.span));
}
fn codegen_panic_inner<'tcx>(
fx: &mut FunctionCx<'_, '_, 'tcx>,
lang_item: rustc_hir::LangItem,
args: &[Value],
span: Span,
span: Option<Span>,
) {
let def_id = fx.tcx.require_lang_item(lang_item, Some(span));
let def_id = fx.tcx.require_lang_item(lang_item, span);
let instance = Instance::mono(fx.tcx, def_id).polymorphize(fx.tcx);
let symbol_name = fx.tcx.symbol_name(instance).name;

14
src/common.rs
View File

@ -98,11 +98,15 @@ fn clif_pair_type_from_ty<'tcx>(
/// Is a pointer to this type a fat ptr?
pub(crate) fn has_ptr_meta<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> bool {
let ptr_ty = Ty::new_ptr(tcx, TypeAndMut { ty, mutbl: rustc_hir::Mutability::Not });
match &tcx.layout_of(ParamEnv::reveal_all().and(ptr_ty)).unwrap().abi {
Abi::Scalar(_) => false,
Abi::ScalarPair(_, _) => true,
abi => unreachable!("Abi of ptr to {:?} is {:?}???", ty, abi),
if ty.is_sized(tcx, ParamEnv::reveal_all()) {
return false;
}
let tail = tcx.struct_tail_erasing_lifetimes(ty, ParamEnv::reveal_all());
match tail.kind() {
ty::Foreign(..) => false,
ty::Str | ty::Slice(..) | ty::Dynamic(..) => true,
_ => bug!("unexpected unsized tail: {:?}", tail),
}
}

20
src/intrinsics/mod.rs
View File

@ -487,13 +487,12 @@ fn codegen_regular_intrinsic_call<'tcx>(
let layout = fx.layout_of(generic_args.type_at(0));
// Note: Can't use is_unsized here as truly unsized types need to take the fixed size
// branch
let size = if let Abi::ScalarPair(_, _) = ptr.layout().abi {
let (_ptr, info) = ptr.load_scalar_pair(fx);
let (size, _align) = crate::unsize::size_and_align_of_dst(fx, layout, info);
size
let meta = if let Abi::ScalarPair(_, _) = ptr.layout().abi {
Some(ptr.load_scalar_pair(fx).1)
} else {
fx.bcx.ins().iconst(fx.pointer_type, layout.size.bytes() as i64)
None
};
let (size, _align) = crate::unsize::size_and_align_of(fx, layout, meta);
ret.write_cvalue(fx, CValue::by_val(size, usize_layout));
}
sym::min_align_of_val => {
@ -502,13 +501,12 @@ fn codegen_regular_intrinsic_call<'tcx>(
let layout = fx.layout_of(generic_args.type_at(0));
// Note: Can't use is_unsized here as truly unsized types need to take the fixed size
// branch
let align = if let Abi::ScalarPair(_, _) = ptr.layout().abi {
let (_ptr, info) = ptr.load_scalar_pair(fx);
let (_size, align) = crate::unsize::size_and_align_of_dst(fx, layout, info);
align
let meta = if let Abi::ScalarPair(_, _) = ptr.layout().abi {
Some(ptr.load_scalar_pair(fx).1)
} else {
fx.bcx.ins().iconst(fx.pointer_type, layout.align.abi.bytes() as i64)
None
};
let (_size, align) = crate::unsize::size_and_align_of(fx, layout, meta);
ret.write_cvalue(fx, CValue::by_val(align, usize_layout));
}
@ -688,7 +686,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
}
})
});
crate::base::codegen_panic_nounwind(fx, &msg_str, source_info);
crate::base::codegen_panic_nounwind(fx, &msg_str, Some(source_info.span));
return;
}
}

110
src/unsize.rs
View File

@ -2,6 +2,9 @@
//!
//! [`PointerCoercion::Unsize`]: `rustc_middle::ty::adjustment::PointerCoercion::Unsize`
use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
use crate::base::codegen_panic_nounwind;
use crate::prelude::*;
// Adapted from https://github.com/rust-lang/rust/blob/2a663555ddf36f6b041445894a8c175cd1bc718c/src/librustc_codegen_ssa/base.rs#L159-L307
@ -187,63 +190,113 @@ pub(crate) fn coerce_dyn_star<'tcx>(
// Adapted from https://github.com/rust-lang/rust/blob/2a663555ddf36f6b041445894a8c175cd1bc718c/src/librustc_codegen_ssa/glue.rs
pub(crate) fn size_and_align_of_dst<'tcx>(
pub(crate) fn size_and_align_of<'tcx>(
fx: &mut FunctionCx<'_, '_, 'tcx>,
layout: TyAndLayout<'tcx>,
info: Value,
info: Option<Value>,
) -> (Value, Value) {
assert!(layout.is_unsized() || layout.abi == Abi::Uninhabited);
match layout.ty.kind() {
if layout.is_sized() {
return (
fx.bcx.ins().iconst(fx.pointer_type, layout.size.bytes() as i64),
fx.bcx.ins().iconst(fx.pointer_type, layout.align.abi.bytes() as i64),
);
}
let ty = layout.ty;
match ty.kind() {
ty::Dynamic(..) => {
// load size/align from vtable
(crate::vtable::size_of_obj(fx, info), crate::vtable::min_align_of_obj(fx, info))
(
crate::vtable::size_of_obj(fx, info.unwrap()),
crate::vtable::min_align_of_obj(fx, info.unwrap()),
)
}
ty::Slice(_) | ty::Str => {
let unit = layout.field(fx, 0);
// The info in this case is the length of the str, so the size is that
// times the unit size.
(
fx.bcx.ins().imul_imm(info, unit.size.bytes() as i64),
fx.bcx.ins().imul_imm(info.unwrap(), unit.size.bytes() as i64),
fx.bcx.ins().iconst(fx.pointer_type, unit.align.abi.bytes() as i64),
)
}
_ => {
ty::Foreign(_) => {
let trap_block = fx.bcx.create_block();
let true_ = fx.bcx.ins().iconst(types::I8, 1);
let next_block = fx.bcx.create_block();
fx.bcx.ins().brif(true_, trap_block, &[], next_block, &[]);
fx.bcx.seal_block(trap_block);
fx.bcx.seal_block(next_block);
fx.bcx.switch_to_block(trap_block);
// `extern` type. We cannot compute the size, so panic.
let msg_str = with_no_visible_paths!({
with_no_trimmed_paths!({
format!("attempted to compute the size or alignment of extern type `{ty}`")
})
});
codegen_panic_nounwind(fx, &msg_str, None);
fx.bcx.switch_to_block(next_block);
// This function does not return so we can now return whatever we want.
let size = fx.bcx.ins().iconst(fx.pointer_type, 42);
let align = fx.bcx.ins().iconst(fx.pointer_type, 42);
(size, align)
}
ty::Adt(..) | ty::Tuple(..) => {
// First get the size of all statically known fields.
// Don't use size_of because it also rounds up to alignment, which we
// want to avoid, as the unsized field's alignment could be smaller.
assert!(!layout.ty.is_simd());
let i = layout.fields.count() - 1;
let sized_size = layout.fields.offset(i).bytes();
let unsized_offset_unadjusted = layout.fields.offset(i).bytes();
let unsized_offset_unadjusted =
fx.bcx.ins().iconst(fx.pointer_type, unsized_offset_unadjusted as i64);
let sized_align = layout.align.abi.bytes();
let sized_align = fx.bcx.ins().iconst(fx.pointer_type, sized_align as i64);
// Recurse to get the size of the dynamically sized field (must be
// the last field).
let field_layout = layout.field(fx, i);
let (unsized_size, mut unsized_align) = size_and_align_of_dst(fx, field_layout, info);
let (unsized_size, mut unsized_align) = size_and_align_of(fx, field_layout, info);
// FIXME (#26403, #27023): We should be adding padding
// to `sized_size` (to accommodate the `unsized_align`
// required of the unsized field that follows) before
// summing it with `sized_size`. (Note that since #26403
// is unfixed, we do not yet add the necessary padding
// here. But this is where the add would go.)
// # First compute the dynamic alignment
// Return the sum of sizes and max of aligns.
let size = fx.bcx.ins().iadd_imm(unsized_size, sized_size as i64);
// Packed types ignore the alignment of their fields.
if let ty::Adt(def, _) = layout.ty.kind() {
if def.repr().packed() {
unsized_align = sized_align;
// For packed types, we need to cap the alignment.
if let ty::Adt(def, _) = ty.kind() {
if let Some(packed) = def.repr().pack {
if packed.bytes() == 1 {
// We know this will be capped to 1.
unsized_align = fx.bcx.ins().iconst(fx.pointer_type, 1);
} else {
// We have to dynamically compute `min(unsized_align, packed)`.
let packed = fx.bcx.ins().iconst(fx.pointer_type, packed.bytes() as i64);
let cmp = fx.bcx.ins().icmp(IntCC::UnsignedLessThan, unsized_align, packed);
unsized_align = fx.bcx.ins().select(cmp, unsized_align, packed);
}
}
}
// Choose max of two known alignments (combined value must
// be aligned according to more restrictive of the two).
let cmp = fx.bcx.ins().icmp(IntCC::UnsignedGreaterThan, sized_align, unsized_align);
let align = fx.bcx.ins().select(cmp, sized_align, unsized_align);
let full_align = fx.bcx.ins().select(cmp, sized_align, unsized_align);
// # Then compute the dynamic size
// The full formula for the size would be:
// let unsized_offset_adjusted = unsized_offset_unadjusted.align_to(unsized_align);
// let full_size = (unsized_offset_adjusted + unsized_size).align_to(full_align);
// However, `unsized_size` is a multiple of `unsized_align`.
// Therefore, we can equivalently do the `align_to(unsized_align)` *after* adding `unsized_size`:
// let full_size = (unsized_offset_unadjusted + unsized_size).align_to(unsized_align).align_to(full_align);
// Furthermore, `align >= unsized_align`, and therefore we only need to do:
// let full_size = (unsized_offset_unadjusted + unsized_size).align_to(full_align);
let full_size = fx.bcx.ins().iadd(unsized_offset_unadjusted, unsized_size);
// Issue #27023: must add any necessary padding to `size`
// (to make it a multiple of `align`) before returning it.
@ -255,12 +308,13 @@ pub(crate) fn size_and_align_of_dst<'tcx>(
// emulated via the semi-standard fast bit trick:
//
// `(size + (align-1)) & -align`
let addend = fx.bcx.ins().iadd_imm(align, -1);
let add = fx.bcx.ins().iadd(size, addend);
let neg = fx.bcx.ins().ineg(align);
let size = fx.bcx.ins().band(add, neg);
let addend = fx.bcx.ins().iadd_imm(full_align, -1);
let add = fx.bcx.ins().iadd(full_size, addend);
let neg = fx.bcx.ins().ineg(full_align);
let full_size = fx.bcx.ins().band(add, neg);
(size, align)
(full_size, full_align)
}
_ => bug!("size_and_align_of_dst: {ty} not supported"),
}
}

59
src/value_and_place.rs
View File

@ -20,34 +20,36 @@ fn codegen_field<'tcx>(
(base.offset_i64(fx, i64::try_from(field_offset.bytes()).unwrap()), field_layout)
};
if let Some(extra) = extra {
if field_layout.is_sized() {
return simple(fx);
}
match field_layout.ty.kind() {
ty::Slice(..) | ty::Str | ty::Foreign(..) => simple(fx),
ty::Adt(def, _) if def.repr().packed() => {
assert_eq!(layout.align.abi.bytes(), 1);
simple(fx)
}
_ => {
// We have to align the offset for DST's
let unaligned_offset = field_offset.bytes();
let (_, unsized_align) =
crate::unsize::size_and_align_of_dst(fx, field_layout, extra);
if field_layout.is_sized() {
return simple(fx);
}
match field_layout.ty.kind() {
ty::Slice(..) | ty::Str => simple(fx),
_ => {
let unaligned_offset = field_offset.bytes();
let one = fx.bcx.ins().iconst(fx.pointer_type, 1);
let align_sub_1 = fx.bcx.ins().isub(unsized_align, one);
let and_lhs = fx.bcx.ins().iadd_imm(align_sub_1, unaligned_offset as i64);
let zero = fx.bcx.ins().iconst(fx.pointer_type, 0);
let and_rhs = fx.bcx.ins().isub(zero, unsized_align);
let offset = fx.bcx.ins().band(and_lhs, and_rhs);
// Get the alignment of the field
let (_, mut unsized_align) = crate::unsize::size_and_align_of(fx, field_layout, extra);
(base.offset_value(fx, offset), field_layout)
// For packed types, we need to cap alignment.
if let ty::Adt(def, _) = layout.ty.kind() {
if let Some(packed) = def.repr().pack {
let packed = fx.bcx.ins().iconst(fx.pointer_type, packed.bytes() as i64);
let cmp = fx.bcx.ins().icmp(IntCC::UnsignedLessThan, unsized_align, packed);
unsized_align = fx.bcx.ins().select(cmp, unsized_align, packed);
}
}
// Bump the unaligned offset up to the appropriate alignment
let one = fx.bcx.ins().iconst(fx.pointer_type, 1);
let align_sub_1 = fx.bcx.ins().isub(unsized_align, one);
let and_lhs = fx.bcx.ins().iadd_imm(align_sub_1, unaligned_offset as i64);
let zero = fx.bcx.ins().iconst(fx.pointer_type, 0);
let and_rhs = fx.bcx.ins().isub(zero, unsized_align);
let offset = fx.bcx.ins().band(and_lhs, and_rhs);
(base.offset_value(fx, offset), field_layout)
}
} else {
simple(fx)
}
}
@ -731,13 +733,8 @@ pub(crate) fn place_field(
};
let (field_ptr, field_layout) = codegen_field(fx, base, extra, layout, field);
if field_layout.is_unsized() {
if let ty::Foreign(_) = field_layout.ty.kind() {
assert!(extra.is_none());
CPlace::for_ptr(field_ptr, field_layout)
} else {
CPlace::for_ptr_with_extra(field_ptr, extra.unwrap(), field_layout)
}
if has_ptr_meta(fx.tcx, field_layout.ty) {
CPlace::for_ptr_with_extra(field_ptr, extra.unwrap(), field_layout)
} else {
CPlace::for_ptr(field_ptr, field_layout)
}

9
y.cmd Normal file
View File

@ -0,0 +1,9 @@
@echo off
echo [BUILD] build system >&2
mkdir build 2>nul
rustc build_system/main.rs -o build\y.exe -Cdebuginfo=1 --edition 2021 || goto :error
build\y.exe %* || goto :error
goto :EOF
:error
exit /b

12
y.ps1 Normal file
View File

@ -0,0 +1,12 @@
$ErrorActionPreference = "Stop"
$host.ui.WriteErrorLine("[BUILD] build system")
New-Item -ItemType Directory -Force -Path build | Out-Null
& rustc build_system/main.rs -o build\y.exe -Cdebuginfo=1 --edition 2021
if ($LASTEXITCODE -ne 0) {
exit $LASTEXITCODE
}
& build\y.exe $args
if ($LASTEXITCODE -ne 0) {
exit $LASTEXITCODE
}