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Stuart Cook b618119fa9
Rollup merge of #145974 - pmur:murp/stabilize-zno-jump-tables, r=wesleywiser 
Stabilize -Zno-jump-tables into -Cjump-tables=bool

I propose stabilizing the -Zno-jump-tables option into -Cjump-tables=<bool>.

# `-Zno-jump-tables` stabilization report
## What is the RFC for this feature and what changes have occurred to the user-facing design since the RFC was finalized?
No RFC was created for this option. This was a narrowly scoped option introduced in rust-lang/rust#105812 to support code generation requirements of the x86-64 linux kernel, and eventually other targets as Rust For Linux grows.

The tracking is rust-lang/rust#116592.

##  What behavior are we committing to that has been controversial? Summarize the major arguments pro/con.

The behavior of this flag is well defined, and mimics the existing `-fno-jump-tables` option currently available with LLVM and GCC with some caveats:

* Unlike clang or gcc, this option may be ignored by the code generation backend. Rust can support multiple code-generation backends. For stabilization, only the LLVM backend honors this option.
* The usage of this option will not guarantee a library or binary is free of jump tables. To ensure a jump-table free binary, all crates in the build graph must be compiled with this option. This includes implicitly linked crates such as std or core.
* This option only enforces the crate being compiled is free of jump tables.
* No verification is done to ensure other crates are compiled with this option. Enforcing code generation options are applied across the crate graph is out of scope for this option.

What should the flag name be?
* As introduced, this option was named `-Zno-jump-tables`. However, other major toolchains allow both positive and negative variants of this option to toggle this feature. Renaming the option to `-Cjump-tables=<bool>` makes this option consistent, and if for some reason, expandable to other arguments in the future. Notably, many LLVM targets have a configurable and different thresholds for when to lower into a jump table.

## Are there extensions to this feature that remain unstable? How do we know that we are not accidentally committing to those.
No. This option is used exclusively to gate a very specific class of optimization.

## Summarize the major parts of the implementation and provide links into the code (or to PRs)
* The original PR rust-lang/rust#105812 by ```@ojeda```
* The stabilized CLI option is parsed as a bool:
68bfda9025/compiler/rustc_session/src/options.rs (L2025-L2026)
* This options adds an attribute to each llvm function via:
68bfda9025/compiler/rustc_codegen_llvm/src/attributes.rs (L210-L215)
* Finally, the rustc book is updated with the new option:
68bfda9025/src/doc/rustc/src/codegen-options/index.md (L212-L223)

## Has a call-for-testing period been conducted? If so, what feedback was received?
No. The option has originally created is being used by Rust For Linux to build the x86-64 kernel without issue.

## What outstanding bugs in the issue tracker involve this feature? Are they stabilization-blocking?
There are no outstanding issues.

## Summarize contributors to the feature by name for recognition and assuredness that people involved in the feature agree with stabilization

* ```@ojeda``` implemented this feature in rust-lang/rust#105815 as  `-Zno-jump-tables`.
* ```@tgross35``` created and maintained the tracking issue rust-lang/rust#116592, and provided feedback about the naming of the cli option.

## What FIXMEs are still in the code for that feature and why is it ok to leave them there?
There are none.

## What static checks are done that are needed to prevent undefined behavior?
This option cannot cause undefined behavior. It is a boolean option with well defined behavior in both cases.

## In what way does this feature interact with the reference/specification, and are those edits prepared?
This adds a new cli option to `rustc`. The documentation is updated, and the unstable documentation cleaned up in this PR.

## Does this feature introduce new expressions and can they produce temporaries? What are the lifetimes of those temporaries?
No.

## What other unstable features may be exposed by this feature?
None.

## What is tooling support like for this feature, w.r.t rustdoc, clippy, rust-analzyer, rustfmt, etc.?
No support is required from other rust tooling.

## Open Items

- [x] Are there objections renaming `-Zno-jump-tables` to `-Cjump-tables=<bool>`? The consensus is no.
- [x] Is it desirable to keep `-Zno-jump-tables` for a period of time? The consensus is no.

---

Closes rust-lang/rust#116592
2025-11-04 13:44:48 +11:00
..
asm compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
autodiff solve autodiffv2.rs FIXME and make identical_fnc test more robust 2025-10-05 03:07:51 -04:00
autovec Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
auxiliary initial implementation of the darwin_objc unstable feature 2025-09-13 16:06:22 -07:00
avr compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
bounds-checking Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cffi compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
compiletest-self-test compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
cross-crate-inlining Ignore intrinsic calls in cross-crate-inlining cost model 2025-09-05 20:44:49 -04:00
debug-accessibility Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debuginfo-proc-macro Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
dllimports Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
enum Change int-to-ptr transmute lowering back to inttoptr 2025-10-10 20:14:23 -04:00
ergonomic-clones Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
float Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
gpu_offload fix host code 2025-10-19 09:28:39 -07:00
hint Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
instrument-coverage Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
instrument-xray Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
intrinsics compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
issues Rollup merge of #146732 - durin42:llvm-22-less-assumes, r=nikic 2025-09-27 21:25:57 +02:00
lib-optimizations specialize slice::fill to use memset when possible 2025-10-08 20:14:24 +02:00
loongarch-abi compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
macos compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
meta-filecheck Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
naked-fn compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
non-terminate Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
option-niche-unfixed Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
patchable-function-entry Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
remap_path_prefix Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
repr compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
riscv-abi compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
sanitizer compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
simd Fix tests/codegen-llvm/simd/extract-insert-dyn.rs test failure on riscv64 2025-07-28 11:58:38 +00:00
simd-intrinsic rustc_codegen_llvm: adapt for LLVM 22 change to pass masked intrinsic alignment as an attribute 2025-10-23 17:23:01 -04:00
src-hash-algorithm Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
unwind-abis Skip cleanups on unsupported targets 2025-09-11 16:13:32 -07:00
aarch64-softfloat.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
aarch64-struct-align-128.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
abi-efiapi.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
abi-main-signature-16bit-c-int.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
abi-main-signature-32bit-c-int.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
abi-repr-ext.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
abi-sysv64.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
abi-win64-zst.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
abi-x86-interrupt.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
abi-x86-sse.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
abi-x86_64_sysv.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
addr-of-mutate.rs Deduce captures(none) for a return place and parameters 2025-10-25 22:53:52 +02:00
adjustments.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
align-byval-alignment-mismatch.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
align-byval-vector.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
align-byval.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
align-enum.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
align-fn.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
align-offset.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
align-static.rs allow #[rustc_align_static(N)] on statics 2025-09-09 21:54:54 +02:00
align-struct.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
alloc-optimisation.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
amdgpu-addrspacecast.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
array-clone.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-cmp.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-codegen.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-equality.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-from_fn.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-map.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-optimized.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
array-repeat.rs stabilize array repeat 2025-08-15 16:42:21 +00:00
ascii-char.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
assign-desugar-debuginfo.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
async-closure-debug.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
async-fn-debug-awaitee-field.rs pub async fn implementation coroutine (func::{closure#0}) is monomorphized, when func itself is monomorphized 2025-09-01 13:45:00 +07:00
async-fn-debug-msvc.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
async-fn-debug.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
atomic-operations.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
atomicptr.rs stabilize strict provenance atomic ptr 2025-08-15 16:56:11 +00:00
autovectorize-f32x4.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
become-musttail.rs Implement support for explicit tail calls in the MIR block builders and the LLVM codegen backend. 2025-07-26 01:02:29 +02:00
bigint-helpers.rs Stop using uadd.with.overflow 2025-08-08 21:59:28 -07:00
binary-heap-peek-mut-pop-no-panic.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
binary-search-index-no-bound-check.rs Consolidate panicking functions in slice/index.rs 2025-08-21 11:07:25 +01:00
bool-cmp.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
bounds-check-elision-slice-min.rs Multiple bounds checking elision failures 2025-08-01 18:38:22 +01:00
box-default-debug-copies.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
box-uninit-bytes.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
bpf-abi-indirect-return.rs bpf: return results larger than one register indirectly 2025-10-13 16:52:12 +00:00
bpf-alu32.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
branch-protection.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
c-variadic-lifetime.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
call-llvm-intrinsics.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
call-tmps-lifetime.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
cast-optimized.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cast-target-abi.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
catch-unwind.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cdylib-external-inline-fns.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cf-protection.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
cfguard-checks.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cfguard-disabled.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cfguard-nochecks.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cfguard-non-msvc.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
char-ascii-branchless.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
char-escape-debug-no-bounds-check.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
checked_ilog.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
checked_math.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
clone-shims.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
clone_as_copy.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
codemodels.rs Verify llvm-needs-components are not empty and match the --target value 2025-07-29 11:20:23 -07:00
coercions.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
cold-attribute.rs Add a test for the cold attribute 2025-10-09 20:24:45 -07:00
cold-call-declare-and-call.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
common_prim_int_ptr.rs Change int-to-ptr transmute lowering back to inttoptr 2025-10-10 20:14:23 -04:00
comparison-operators-2-struct.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
comparison-operators-2-tuple.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
comparison-operators-newtype.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
const-array.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
const-vector.rs Fix tests/codegen-llvm/const-vector.rs test failure on riscv64 2025-07-23 11:23:36 +00:00
const_scalar_pair.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
constant-branch.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
consts.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
coroutine-debug-msvc.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
coroutine-debug.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
darwin-no-objc.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
darwin-objc-abi-v1.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
darwin-objc-abi-v2.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
darwin-objc-cross-crate.rs initial implementation of the darwin_objc unstable feature 2025-09-13 16:06:22 -07:00
dead_on_return.rs Set dead_on_return attribute for indirect arguments 2025-08-11 12:39:23 +02:00
dealloc-no-unwind.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-alignment.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-column-msvc.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-column.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-compile-unit-path.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-fndef-size.rs mir-opt: Eliminate dead ref statements 2025-10-02 14:55:50 +08:00
debug-limited.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-line-directives-only.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-line-tables-only.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-linkage-name.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debug-vtable.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debuginfo-constant-locals.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debuginfo-cyclic-structure.rs fix(debuginfo): disable overflow check for 2025-07-27 14:42:07 +03:00
debuginfo-dse.rs debuginfo: Use LocalRef to simplify reference debuginfos 2025-10-03 08:08:22 +08:00
debuginfo-generic-closure-env-names.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
debuginfo-inline-callsite-location.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
deduced-param-attrs.rs Skip parameter attribute deduction for MIR with spread_arg 2025-10-28 23:07:04 +01:00
default-requires-uwtable.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
default-visibility.rs Ignore intrinsic calls in cross-crate-inlining cost model 2025-09-05 20:44:49 -04:00
direct-access-external-data.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
diverging-function-call-debuginfo.rs tests: Test line number in debuginfo for diverging function calls 2025-07-29 18:59:09 +02:00
dont_codegen_private_const_fn_only_used_in_const_eval.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
drop-in-place-noalias.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
drop.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
dst-offset.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
dst-vtable-align-nonzero.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
dst-vtable-size-range.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
ehcontguard_disabled.rs Verify llvm-needs-components are not empty and match the --target value 2025-07-29 11:20:23 -07:00
ehcontguard_enabled.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
emscripten-catch-unwind-js-eh.rs Replace NullOp::SizeOf and NullOp::AlignOf by lang items. 2025-10-23 00:38:28 +00:00
emscripten-catch-unwind-wasm-eh.rs Replace NullOp::SizeOf and NullOp::AlignOf by lang items. 2025-10-23 00:38:28 +00:00
enable-lto-unit-splitting.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
error-provide.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
export-no-mangle.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
external-no-mangle-fns.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
external-no-mangle-statics.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
f128-wasm32-callconv.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
fastcall-inreg.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
fatptr.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
fewer-names.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
fixed-x18.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
float_math.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
fn-impl-trait-self.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
fn-parameters-on-different-lines-debuginfo.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
force-frame-pointers.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
force-no-unwind-tables.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
force-unwind-tables.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
frame-pointer-cli-control.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
frame-pointer.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
function-arguments-noopt.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
function-arguments.rs Auto merge of #148350 - scottmcm:slice-range-attributes, r=JonathanBrouwer,davidtwco 2025-11-03 19:36:42 +00:00
function-return.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
gdb_debug_script_load.rs Revert "Preserve the .debug_gdb_scripts section" 2025-08-06 18:01:07 +00:00
generic-debug.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
gep-index.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
global-allocator-attributes.rs Add attributes for #[global_allocator] functions 2025-09-23 10:21:17 +02:00
gpu-kernel-abi.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
i128-wasm32-callconv.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
i128-x86-align.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
i128-x86-callconv.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
indirect-branch-cs-prefix.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
infallible-unwrap-in-opt-z.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
inherit_overflow.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
inline-always-works-always.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
inline-debuginfo.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
inline-function-args-debug-info.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
inline-hint.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
instrument-mcount.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
int-ptr-int-enum-miscompile.rs Change int-to-ptr transmute lowering back to inttoptr 2025-10-10 20:14:23 -04:00
integer-cmp.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
integer-overflow.rs Consolidate panicking functions in slice/index.rs 2025-08-21 11:07:25 +01:00
internalize-closures.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
intrinsic-no-unnamed-attr.rs Mark float intrinsics with no preconditions as safe 2025-09-21 20:37:51 -04:00
is_val_statically_known.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
issue-97217.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
iter-repeat-n-trivial-drop.rs stabilize array repeat 2025-08-15 16:42:21 +00:00
layout-size-checks.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
lifetime_start_end.rs llvm: Accept new LLVM lifetime format 2025-08-11 22:00:41 +00:00
link-dead-code.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
link_section.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
llvm-ident.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
llvm_module_flags.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
loads.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
local-generics-in-exe-internalized.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
lto-removes-invokes.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
mainsubprogram.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
match-optimized.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
match-optimizes-away.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
match-unoptimized.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
maybeuninit-rvo.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
mem-replace-big-type.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
mem-replace-simple-type.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
merge-functions.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
method-declaration.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
min-function-alignment.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
mir-aggregate-no-alloca.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
mir-inlined-line-numbers.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
mir_zst_stores.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
move-before-nocapture-ref-arg.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
move-operands.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
naked-asan.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
no-alloca-inside-if-false.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
no-assumes-on-casts.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
no-dllimport-w-cross-lang-lto.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
no-jump-tables.rs Stabilize -Zjump-tables=<bool> into -Cjump-table=<bool> 2025-11-03 08:12:16 -06:00
no-plt.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
no-redundant-item-monomorphization.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
no_builtins-at-crate.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-box-off.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-box.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-flag.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-freeze.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-refcell.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-rwlockreadguard.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noalias-unpin.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noreturn-uninhabited.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
noreturnflag.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
nounwind.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
nrvo.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
optimize-attr-1.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
option-as-slice.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
option-niche-eq.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
overaligned-constant.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
packed.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
panic-abort-windows.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
panic-in-drop-abort.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
panic-unwind-default-uwtable.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
pattern_type_symbols.rs Add proper name mangling for pattern types 2025-09-23 10:59:29 +00:00
personality_lifetimes.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
pgo-counter-bias.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
pgo-instrumentation.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
pic-relocation-model.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
pie-relocation-model.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
placement-new.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
powerpc64le-struct-align-128.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
precondition-checks.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
ptr-arithmetic.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
ptr-read-metadata.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
range-attribute.rs Add LLVM range attributes to slice length parameters 2025-10-31 16:12:30 -07:00
range-loop.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
range_to_inclusive.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
read-only-capture-opt.rs Tell LLVM about read-only captures 2025-08-20 19:08:16 +02:00
README.md Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
refs.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
reg-struct-return.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
regparm-inreg.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
repeat-operand-zero-len.rs tests: fix RISC-V failures and adjust transmute-scalar.rs target 2025-08-18 19:37:13 +00:00
repeat-operand-zst-elem.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
repeat-trusted-len.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
retpoline.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
riscv-target-abi.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
rust-abi-arch-specific-adjustment.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
s390x-simd.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
scalar-pair-bool.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
set-discriminant-invalid.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
skip-mono-inside-if-false.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-as_chunks.rs Add LLVM range attributes to slice length parameters 2025-10-31 16:12:30 -07:00
slice-indexing.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-init.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-is-ascii.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-iter-fold.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-iter-len-eq-zero.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-iter-nonnull.rs Add LLVM range attributes to slice length parameters 2025-10-31 16:12:30 -07:00
slice-last-elements-optimization.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
slice-len-math.rs Add LLVM range attributes to slice length parameters 2025-10-31 16:12:30 -07:00
slice-pointer-nonnull-unwrap.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-position-bounds-check.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-ref-equality.rs Add LLVM range attributes to slice length parameters 2025-10-31 16:12:30 -07:00
slice-reverse.rs Consolidate panicking functions in slice/index.rs 2025-08-21 11:07:25 +01:00
slice-split-at.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice-windows-no-bounds-check.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
slice_as_from_ptr_range.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
some-abis-do-extend-params-to-32-bits.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
some-global-nonnull.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
sparc-struct-abi.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
split-lto-unit.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
sroa-fragment-debuginfo.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
sse42-implies-crc32.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
stack-probes-inline.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
stack-protector.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
static-relocation-model-msvc.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
staticlib-external-inline-fns.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
step_by-overflow-checks.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
stores.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
string-push.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
swap-large-types.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
swap-small-types.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
target-cpu-on-functions.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
target-feature-inline-closure.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
target-feature-negative-implication.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
target-feature-overrides.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
terminating-catchpad.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
thread-local.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
tied-features-strength.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
to_vec.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
trailing_zeros.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
transmute-optimized.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
transmute-scalar.rs compiletest: rename add-core-stubs to add-minicore 2025-11-02 16:20:06 +01:00
try_question_mark_nop.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
tune-cpu-on-functions.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
tuple-layout-opt.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
ub-checks.rs Verify llvm-needs-components are not empty and match the --target value 2025-07-29 11:20:23 -07:00
unchecked-float-casts.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
unchecked_shifts.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
uninhabited-transparent-return-abi.rs tests: fix RISC-V failures and adjust transmute-scalar.rs target 2025-08-18 19:37:13 +00:00
uninit-consts.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
uninit-repeat-in-aggregate.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
union-abi.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
union-aggregate.rs Update the minimum external LLVM to 20 2025-09-16 11:49:20 -07:00
unwind-and-panic-abort.rs Skip cleanups on unsupported targets 2025-09-11 16:13:32 -07:00
unwind-extern-exports.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
unwind-extern-imports.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
unwind-landingpad-cold.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
unwind-landingpad-inline.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
used_with_arg.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
var-names.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-as-ptr.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-calloc.rs Pass alloc-variant-zeroed to LLVM 2025-08-20 17:08:46 +01:00
vec-in-place.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-iter-collect-len.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-iter.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-len-invariant.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-optimizes-away.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-reserve-extend.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-shrink-panik.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec-with-capacity.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vec_pop_push_noop.rs tests: use max-llvm-major-version instead of ignore-llvm-version 2025-09-26 13:32:03 -04:00
vecdeque-drain.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vecdeque-nonempty-get-no-panic.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vecdeque_no_panic.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vecdeque_pop_push.rs tests: use max-llvm-major-version instead of ignore-llvm-version 2025-09-26 13:32:03 -04:00
virtual-call-attrs-issue-137646.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
virtual-function-elimination-32bit.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
virtual-function-elimination.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vtable-loads.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
vtable-upcast.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
wasm_casts_trapping.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
wasm_exceptions.rs Move wasm throw intrinsic back to unwind 2025-10-30 15:13:32 +03:00
zip.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
zst-offset.rs Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00

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