rust/codegen at 1daec069fbf562f5ec22c2ab1c6aee3573348858 - rust

mirror of https://github.com/rust-lang/rust.git synced 2025-12-30 17:45:30 +00:00

History

bors 1daec069fb Auto merge of #128004 - folkertdev:naked-fn-asm, r=Amanieu

codegen `#[naked]` functions using global asm

tracking issue: https://github.com/rust-lang/rust/issues/90957

Fixes #124375

This implements the approach suggested in the tracking issue: use the existing global assembly infrastructure to emit the body of `#[naked]` functions. The main advantage is that we now have full control over what gets generated, and are no longer dependent on LLVM not sneakily messing with our output (inlining, adding extra instructions, etc).

I discussed this approach with `@Amanieu` and while I think the general direction is correct, there is probably a bunch of stuff that needs to change or move around here. I'll leave some inline comments on things that I'm not sure about.

Combined with https://github.com/rust-lang/rust/pull/127853, if both accepted, I think that resolves all steps from the tracking issue.

r? `@Amanieu`

2024-12-11 21:51:07 +00:00

asm

Rollup merge of #131551 - taiki-e:ppc-asm-vreg-inout, r=Amanieu

2024-11-30 12:57:32 +08:00

auxiliary

…

avr

Share inline(never) generics across crates

2024-11-28 13:43:05 -05:00

cffi

…

compiletest-self-test

…

cross-crate-inlining

…

debug-accessibility

…

debuginfo-proc-macro

Update tests to use new proc-macro header

2024-11-27 07:18:25 -08:00

dllimports

…

enum

…

float

Always inline functions signatures containing f16 or f128

2024-11-14 16:18:41 -06:00

instrument-coverage

coverage: Adjust a codegen test to ignore the order of covmap/covfun globals

2024-12-11 21:34:48 +11:00

instrument-xray

…

intrinsics

Likely unlikely fix

2024-11-17 21:49:10 +01:00

issues

Adapt codegen tests for NUW inference

2024-12-05 16:08:41 +01:00

lib-optimizations

…

loongarch-abi

…

macos

…

meta-filecheck

…

naked-fn

make naked function generics test stricter

2024-12-10 21:41:05 +01:00

non-terminate

…

patchable-function-entry

…

remap_path_prefix

…

repr

…

riscv-abi

…

sanitizer

Rollup merge of #127483 - BertalanD:no_sanitize-global-var, r=rcvalle

2024-11-23 20:19:51 +08:00

simd

…

simd-intrinsic

…

src-hash-algorithm

…

unwind-abis

…

aarch64-softfloat.rs

Update test expectations to accept LLVM 'initializes' attribute

2024-11-25 15:30:35 +01:00

aarch64-struct-align-128.rs

…

abi-efiapi.rs

…

abi-main-signature-16bit-c-int.rs

…

abi-main-signature-32bit-c-int.rs

…

abi-repr-ext.rs

…

abi-sysv64.rs

…

abi-x86_64_sysv.rs

…

abi-x86-interrupt.rs

…

addr-of-mutate.rs

…

adjustments.rs

…

align-byval-alignment-mismatch.rs

…

align-byval-vector.rs

…

align-byval.rs

…

align-enum.rs

…

align-fn.rs

…

align-offset.rs

…

align-struct.rs

…

alloc-optimisation.rs

…

array-clone.rs

…

array-cmp.rs

…

array-codegen.rs

…

array-equality.rs

…

array-from_fn.rs

…

array-map.rs

…

array-optimized.rs

…

array-repeat.rs

…

ascii-char.rs

…

async-closure-debug.rs

Gate async fn trait bound modifier on async_trait_bounds

2024-12-02 16:50:44 +00:00

async-fn-debug-awaitee-field.rs

…

async-fn-debug-msvc.rs

…

async-fn-debug.rs

…

atomic-operations.rs

…

atomicptr.rs

…

autovectorize-f32x4.rs

…

binary-heap-peek-mut-pop-no-panic.rs

…

binary-search-index-no-bound-check.rs

…

bool-cmp.rs

…

box-uninit-bytes.rs

…

bpf-alu32.rs

…

branch-protection-old-llvm.rs

tests: use max-llvm-major-version instead of ignore-llvm-version range like N - 99

2024-11-14 17:44:54 +08:00

branch-protection.rs

…

call-llvm-intrinsics.rs

…

call-metadata.rs

tests: use max-llvm-major-version instead of ignore-llvm-version range like N - 99

2024-11-14 17:44:54 +08:00

cast-optimized.rs

…

cast-target-abi.rs

…

catch-unwind.rs

…

cdylib-external-inline-fns.rs

…

cf-protection.rs

…

cfguard-checks.rs

…

cfguard-disabled.rs

…

cfguard-nochecks.rs

…

cfguard-non-msvc.rs

…

char-ascii-branchless.rs

…

checked_ilog.rs

…

checked_math.rs

Likely unlikely fix

2024-11-17 21:49:10 +01:00

clone_as_copy.rs

…

clone-shims.rs

…

codemodels.rs

…

coercions.rs

…

cold-call-declare-and-call.rs

…

common_prim_int_ptr.rs

…

comparison-operators-2-tuple.rs

…

comparison-operators-newtype.rs

…

const_scalar_pair.rs

…

const-vector.rs

…

constant-branch.rs

…

consts.rs

…

coroutine-debug-msvc.rs

…

coroutine-debug.rs

…

dealloc-no-unwind.rs

…

debug-alignment.rs

…

debug-column-msvc.rs

…

debug-column.rs

…

debug-compile-unit-path.rs

…

debug-fndef-size.rs

…

debug-limited.rs

…

debug-line-directives-only.rs

…

debug-line-tables-only.rs

…

debug-linkage-name.rs

…

debug-vtable.rs

…

debuginfo-constant-locals.rs

…

debuginfo-generic-closure-env-names.rs

…

debuginfo-inline-callsite-location.rs

…

deduced-param-attrs.rs

…

default-requires-uwtable.rs

…

default-visibility.rs

…

direct-access-external-data.rs

…

dont_codegen_private_const_fn_only_used_in_const_eval.rs

…

drop-in-place-noalias.rs

…

drop.rs

…

dst-offset.rs

…

dst-vtable-align-nonzero.rs

…

dst-vtable-size-range.rs

…

ehcontguard_disabled.rs

…

ehcontguard_enabled.rs

…

emcripten-catch-unwind.rs

Adapt codegen tests for NUW inference

2024-12-05 16:08:41 +01:00

enable-lto-unit-splitting.rs

…

error-provide.rs

…

export-no-mangle.rs

…

external-no-mangle-fns.rs

…

external-no-mangle-statics.rs

…

fastcall-inreg.rs

…

fatptr.rs

…

fewer-names.rs

…

fixed-x18.rs

…

float_math.rs

…

fn-impl-trait-self.rs

…

force-frame-pointers.rs

…

force-no-unwind-tables.rs

…

force-unwind-tables.rs

…

frame-pointer.rs

…

function-arguments-noopt.rs

…

function-arguments.rs

…

function-return.rs

…

gdb_debug_script_load.rs

…

generic-debug.rs

…

i128-x86-align.rs

…

infallible-unwrap-in-opt-z.rs

…

inherit_overflow.rs

…

inline-always-works-always.rs

…

inline-debuginfo.rs

…

inline-function-args-debug-info.rs

…

inline-hint.rs

…

instrument-mcount.rs

…

integer-cmp.rs

tests: use max-llvm-major-version instead of ignore-llvm-version range like N - 99

2024-11-14 17:44:54 +08:00

integer-overflow.rs

…

internalize-closures.rs

…

intrinsic-no-unnamed-attr.rs

…

is_val_statically_known.rs

…

issue-97217.rs

…

iter-repeat-n-trivial-drop.rs

…

layout-size-checks.rs

…

lifetime_start_end.rs

…

link_section.rs

…

link-dead-code.rs

…

llvm_module_flags.rs

…

llvm-ident.rs

…

loads.rs

…

local-generics-in-exe-internalized.rs

…

lto-removes-invokes.rs

…

mainsubprogram.rs

…

mainsubprogramstart.rs

…

match-optimized.rs

…

match-optimizes-away.rs

…

match-unoptimized.rs

…

maybeuninit-rvo.rs

…

mem-replace-big-type.rs

…

mem-replace-simple-type.rs

…

merge-functions.rs

…

method-declaration.rs

…

mir_zst_stores.rs

…

mir-aggregate-no-alloca.rs

…

mir-inlined-line-numbers.rs

…

move-before-nocapture-ref-arg.rs

…

move-operands.rs

…

naked-asan.rs

fix the naked-asan test

2024-12-10 21:41:05 +01:00

no_builtins-at-crate.rs

…

no-alloca-inside-if-false.rs

…

no-assumes-on-casts.rs

…

no-dllimport-w-cross-lang-lto.rs

…

no-jump-tables.rs

…

no-plt.rs

…

no-redundant-item-monomorphization.rs

…

noalias-box-off.rs

…

noalias-box.rs

…

noalias-flag.rs

…

noalias-freeze.rs

…

noalias-refcell.rs

…

noalias-rwlockreadguard.rs

…

noalias-unpin.rs

…

noreturn-uninhabited.rs

…

noreturnflag.rs

…

nounwind.rs

…

nrvo.rs

…

optimize-attr-1.rs

…

option-as-slice.rs

…

option-niche-eq.rs

…

overaligned-constant.rs

…

packed.rs

…

panic-abort-windows.rs

…

panic-in-drop-abort.rs

…

panic-unwind-default-uwtable.rs

…

pattern_type_symbols.rs

Rename core_pattern_type and core_pattern_types lib feature gates to pattern_type_macro

2024-12-04 16:16:24 +00:00

personality_lifetimes.rs

…

pgo-counter-bias.rs

…

pgo-instrumentation.rs

…

pic-relocation-model.rs

…

pie-relocation-model.rs

…

placement-new.rs

…

powerpc64le-struct-align-128.rs

…

precondition-checks.rs

…

ptr-arithmetic.rs

…

ptr-read-metadata.rs

…

range-attribute.rs

…

README.md

…

refs.rs

…

reg-struct-return.rs

rust_for_linux: -Zreg-struct-return commandline flag for X86 (#116973 )

2024-12-02 01:14:40 +07:00

regparm-inreg.rs

…

repeat-trusted-len.rs

…

riscv-target-abi.rs

…

rust-abi-arch-specific-adjustment.rs

…

scalar-pair-bool.rs

…

set-discriminant-invalid.rs

…

skip-mono-inside-if-false.rs

…

slice_as_from_ptr_range.rs

…

slice-as_chunks.rs

…

slice-indexing.rs

…

slice-init.rs

…

slice-iter-fold.rs

…

slice-iter-len-eq-zero.rs

…

slice-iter-nonnull.rs

Adapt codegen tests for NUW inference

2024-12-05 16:08:41 +01:00

slice-pointer-nonnull-unwrap.rs

…

slice-position-bounds-check.rs

…

slice-ref-equality.rs

…

slice-reverse.rs

…

slice-windows-no-bounds-check.rs

…

some-abis-do-extend-params-to-32-bits.rs

…

some-global-nonnull.rs

…

sparc-struct-abi.rs

…

split-lto-unit.rs

…

sroa-fragment-debuginfo.rs

…

sse42-implies-crc32.rs

…

stack-probes-inline.rs

…

stack-protector.rs

…

static-relocation-model-msvc.rs

…

staticlib-external-inline-fns.rs

…

step_by-overflow-checks.rs

…

stores.rs

…

swap-large-types.rs

…

swap-small-types.rs

…

target-cpu-on-functions.rs

…

target-feature-inline-closure.rs

…

target-feature-overrides.rs

…

thread-local.rs

…

tied-features-strength.rs

…

to_vec.rs

…

trailing_zeros.rs

…

transmute-optimized.rs

…

transmute-scalar.rs

…

try_question_mark_nop.rs

…

tune-cpu-on-functions.rs

…

tuple-layout-opt.rs

…

ub-checks.rs

…

unchecked_shifts.rs

…

unchecked-float-casts.rs

…

uninit-consts.rs

…

union-abi.rs

…

unwind-and-panic-abort.rs

…

unwind-extern-exports.rs

…

unwind-extern-imports.rs

…

unwind-landingpad-cold.rs

…

unwind-landingpad-inline.rs

…

used_with_arg.rs

…

var-names.rs

…

vec_pop_push_noop.rs

…

vec-as-ptr.rs

…

vec-calloc.rs

…

vec-in-place.rs

…

vec-iter-collect-len.rs

…

vec-iter.rs

…

vec-len-invariant.rs

…

vec-optimizes-away.rs

…

vec-reserve-extend.rs

…

vec-shrink-panik.rs

…

vec-with-capacity.rs

…

vecdeque_no_panic.rs

…

vecdeque_pop_push.rs

…

vecdeque-drain.rs

…

vecdeque-nonempty-get-no-panic.rs

…

virtual-function-elimination-32bit.rs

…

virtual-function-elimination.rs

…

vtable-loads.rs

…

vtable-upcast.rs

…

wasm_casts_trapping.rs

…

wasm_exceptions.rs

…

zip.rs

…

zst-offset.rs

…

README.md

The files here use the LLVM FileCheck framework, documented at https://llvm.org/docs/CommandGuide/FileCheck.html.

One extension worth noting is the use of revisions as custom prefixes for FileCheck. If your codegen test has different behavior based on the chosen target or different compiler flags that you want to exercise, you can use a revisions annotation, like so:

// revisions: aaa bbb
// [bbb] compile-flags: --flags-for-bbb

After specifying those variations, you can write different expected, or explicitly unexpected output by using <prefix>-SAME: and <prefix>-NOT:, like so:

// CHECK: expected code
// aaa-SAME: emitted-only-for-aaa
// aaa-NOT:                        emitted-only-for-bbb
// bbb-NOT:  emitted-only-for-aaa
// bbb-SAME:                       emitted-only-for-bbb