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bors c2c6f74fd2 Auto merge of #152864 - TKanX:bugfix/123183-array-cast-abi-noundef, r=RalfJung 
perf(codegen): Restore `noundef` On `PassMode::Cast` Args In Rust ABI



### Summary:

#### Problem:

Small aggregate arguments passed via `PassMode::Cast` in the Rust ABI (e.g. `[u32; 2]` cast to `i64`) are missing `noundef` in the emitted LLVM IR, even when the type contains no uninit bytes:

```rust
#[no_mangle]
pub fn f(v: [u32; 2]) -> u32 { v[0] }
```

```llvm
; expected: define i32 @f(i64 noundef %0)
; actual:   define i32 @f(i64 %0)           ← noundef missing
```

This blocks LLVM from applying optimizations that require value-defined semantics on function arguments.

#### Root Cause:

`adjust_for_rust_abi` calls `arg.cast_to(Reg::Integer)`, which internally creates a `CastTarget` with `ArgAttributes::new()` — always empty. Any validity attribute that was present before the cast is silently dropped.

This affects all `PassMode::Cast` arguments and return values in the Rust ABI: plain arrays, newtype wrappers, and any `BackendRepr::Memory` type small enough to fit in a register.

A prior attempt (rust-lang/rust#127210) used `Ty`/`repr` attributes to detect padding.

#### Solution:

After `adjust_for_rust_abi`, iterate all `PassMode::Cast` args and the return value. For each, call `layout_is_noundef` on the original layout; if it returns `true`, set `NoUndef` on the `CastTarget`'s `attrs`.

`layout_is_noundef` uses only the computed layout — `BackendRepr`, `FieldsShape`, `Variants`, `Scalar::is_uninit_valid()` — and never touches `Ty` or repr attributes. **Anything it cannot prove returns `false`.**

Covered cases:
- `Scalar` / `ScalarPair` (both halves initialized, fields contiguous)
- `FieldsShape::Array` (element type recursively uninit-free)
- `FieldsShape::Arbitrary` with `Variants::Single` (fields cover `0..size` with no gaps, each recursively uninit-free) — handles newtype wrappers, multi-field structs, single-variant enums, `repr(transparent)`, `repr(C)` wrappers

Conservatively excluded with FIXMEs:
- Multi-variant enums (per-variant padding analysis needed)
- Foreign-ABI casts (cast target may exceed layout size, needs a size guard)

### Changes:

- `compiler/rustc_ty_utils/src/abi.rs`: add restoration loop after `adjust_for_rust_abi`; add `layout_is_noundef` and `fields_cover_layout`.
- `tests/codegen-llvm/abi-noundef-cast.rs`: new FileCheck test covering arrays, newtype wrappers (`repr(Rust)`, `repr(transparent)`, `repr(C)`), multi-field structs, single-variant enums, return values, and negative cases (`MaybeUninit`, struct with trailing padding).
- `tests/codegen-llvm/debuginfo-dse.rs`: update one CHECK pattern — `Aggregate_4xi8` (`struct { i8, i8, i8, i8 }`) now correctly gets `noundef`.

Fixes rust-lang/rust#123183.

r? @RalfJung
2026-03-01 01:50:36 +00:00
..
annotate-moves
Add -Zannotate-moves for profiler visibility of move/copy operations
2025-11-06 15:39:45 -08:00
asm
Restrict spe_acc to PowerPC SPE targets
2025-12-05 08:37:22 -06:00
autodiff
Shorten the autodiff batching test, to make it more reliable
2026-01-23 23:18:52 -08:00
autovec
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
auxiliary
add overflow_checks intrinsic
2025-11-08 10:57:35 -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
c_variadic: use Clone instead of LLVM va_copy
2026-01-20 18:38:50 +01:00
compiletest-self-test
compiletest: rename add-core-stubs to add-minicore
2025-11-02 16:20:06 +01:00
cross-crate-inlining
Don't treat asserts as a call in cross-crate inlining
2025-12-18 19:12:09 -05:00
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
discriminant reads: make semantics independent of module/crate
2026-01-15 19:12:13 +01:00
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
Split ol mapper into more specific to/kernel/from mapper and move init_all_rtls into global ctor
2026-02-07 17:34:39 -08:00
hint
Stabilize core::hint::cold_path
2026-01-26 13:43:06 -06:00
instrument-coverage
Relax test expectation for @__llvm_profile_runtime_user
2026-01-12 11:03:07 +01:00
instrument-xray
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
intrinsics
make rustc_allow_const_fn_unstable an actual rustc_attrs attribute
2026-02-17 20:16:29 +00:00
issues
Revert "Simplify internals of {Rc,Arc}::default"
2026-02-25 13:09:14 -08:00
lib-optimizations
Disable append-elements.rs test with debug assertions
2026-01-30 13:01:22 +01:00
loongarch
LoongArch: Fix direct-access-external-data test
2026-01-20 16:26:15 +08:00
loongarch-abi
Rollup merge of #151405 - heiher:fix-cli, r=Mark-Simulacrum
2026-01-25 16:27:23 +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
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
non-terminate
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
option-niche-unfixed
Avoid should-fail in a codegen-llvm test
2026-01-13 15:21:20 +00:00
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
Adds two new Tier 3 targets - aarch64v8r-unknown-none and aarch64v8r-unknown-none-softfloat.
2026-01-26 12:43:52 +00:00
scalable-vectors
codegen: implement repr(scalable)
2025-12-16 11:00:12 +00:00
simd
add test for simd from array repeat codegen
2026-02-03 22:44:44 +01:00
simd-intrinsic
Add alignment parameter to simd_masked_{load,store}
2025-11-04 02:30:59 +05:30
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
aarch64v8r-softfloat.rs
Adds two new Tier 3 targets - aarch64v8r-unknown-none and aarch64v8r-unknown-none-softfloat.
2026-01-26 12:43:52 +00:00
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-noundef-cast.rs
fix(abi): Restore noundef on PassMode::Cast args in Rust ABI
2026-02-27 12:08:59 -08:00
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_64_sysv.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
addr-of-mutate.rs
llvm: Tolerate dead_on_return attribute changes
2026-01-21 23:39:03 +00:00
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
Turn moves into copies after copy propagation
2025-11-20 19:23:10 +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
tests: adapt align-offset.rs for InstCombine improvements in LLVM 23
2026-02-09 15:53:38 -05:00
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
Avoid passing addrspacecast to lifetime intrinsics
2026-01-20 14:47:04 +01:00
amdgpu-dispatch-ptr.rs
Add amdgpu_dispatch_ptr intrinsic
2026-01-09 10:41:37 +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
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
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
backchain.rs
remove redundant backchain attribute in codegen
2026-02-12 09:58:25 +01:00
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
Move bigint helper tracking issues
2026-02-02 18:45:26 -05:00
binary-heap-peek-mut-pop-no-panic.rs
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
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
Pass alignments through the shim as Alignment (not usize)
2026-02-14 01:39:16 -08:00
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
Fix passing/returning structs with the 64-bit SPARC ABI
2026-02-10 12:39:45 +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
Emit error when using path-segment keyword as cfg pred
2025-11-21 18:48:04 +08:00
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
Replace uses of 'CHECK: br' and 'CHECK-NOT: br' with 'br {{.*}}'.
2025-11-21 13:04:48 -06:00
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
Stabilize unchecked_neg and unchecked_shifts
2025-11-19 13:19:22 +04:00
clone_as_copy.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
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
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
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_scalar_pair.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
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
fix(abi): Restore noundef on PassMode::Cast args in Rust ABI
2026-02-27 12:08:59 -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
Update tests/codegen-llvm/deduced-param-attrs.rs
2025-11-11 12:31:37 +03:00
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
LoongArch: Fix direct-access-external-data test
2026-01-20 16:26:15 +08:00
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
double_panic_wasm.rs
Fix: On wasm targets, call panic_in_cleanup if panic occurs in cleanup
2026-02-24 17:47:27 +01:00
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
Include the Align::MAX limit in the !range metadata for loading alignment from a vtable
2026-02-20 20:22:31 -08:00
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
Emscripten: Turn wasm-eh on by default
2025-12-03 14:34:07 -08:00
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
fromrangeiter-overflow-checks.rs
library: Rename IterRange* to Range*Iter
2025-12-02 16:20:50 -05:00
function-arguments-noopt.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
function-arguments.rs
extend unpin noalias tests to cover mutable references
2026-02-22 15:24:20 +01:00
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-callsite.rs
Fix issue with callsite inline attribute not being applied sometimes.
2025-11-26 13:31:26 +00:00
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
Use repeat_packed when calculating layouts in RawVec
2026-01-21 01:11:12 -08:00
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_section.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
link-dead-code.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
llvm-ident.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
loads.rs
Prepare NonNull for pattern types
2026-02-24 08:33:15 +00:00
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-array.rs
Fix MaybeUninit codegen using GVN
2025-11-23 08:23:49 -05:00
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_zst_stores.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
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_builtins-at-crate.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
no-alloca-inside-if-false.rs
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
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
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
Replace uses of 'CHECK: br' and 'CHECK-NOT: br' with 'br {{.*}}'.
2025-11-21 13:04:48 -06:00
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
overflow-checks.rs
tests: Fix overflow-checks test for RISC-V target
2025-11-12 17:52:14 +08:00
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
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
preserve-none.rs
abi: add a rust-preserve-none calling convention
2026-01-24 19:23:17 +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_to_inclusive.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
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
stabilize s390x_target_feature_vector
2025-11-06 12:49:48 +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_from_ptr_range.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
slice_cse_optimization.rs
add CSE optimization tests for iterating over slice
2026-01-05 05:17:56 +09:00
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
Replace uses of 'CHECK: br' and 'CHECK-NOT: br' with 'br {{.*}}'.
2025-11-21 13:04:48 -06:00
slice-iter-fold.rs
Replace uses of 'CHECK: br' and 'CHECK-NOT: br' with 'br {{.*}}'.
2025-11-21 13:04:48 -06:00
slice-iter-len-eq-zero.rs
Reinstate bonus for unused UbChecks.
2025-12-21 00:58:00 +00:00
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-range-indexing.rs
Optimize SliceIndex::get impl for RangeInclusive
2026-02-10 20:29:45 +00:00
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
slp-vectorization-mul3.rs
Update min-llvm-version: 22
2026-02-02 16:47:09 +05:30
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
some-non-zero-from-atomic-optimization.rs
tests/codegen-llvm/some-non-zero-from-atomic-optimization.rs: New test
2025-12-31 15:22:07 +01:00
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
str-range-indexing.rs
Optimize SliceIndex<str> for RangeInclusive
2026-02-10 23:19:01 +00:00
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
tail-call-u128.rs
test u128 passing on linux and windows
2026-02-27 10:51:55 +01:00
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
Fix: On wasm targets, call panic_in_cleanup if panic occurs in cleanup
2026-02-24 17:47:27 +01:00
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_shifts.rs
Stabilize unchecked_neg and unchecked_shifts
2025-11-19 13:19:22 +04:00
unchecked-float-casts.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
Fix MaybeUninit codegen using GVN
2025-11-23 08:23:49 -05:00
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_pop_push_noop.rs
tests: use max-llvm-major-version instead of ignore-llvm-version
2025-09-26 13:32:03 -04:00
vec-as-ptr.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
vec-calloc.rs
Pass alignments through the shim as Alignment (not usize)
2026-02-14 01:39:16 -08:00
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
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vec-iter.rs
Rename tests/codegen into tests/codegen-llvm
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vec-len-invariant.rs
Rename tests/codegen into tests/codegen-llvm
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vec-optimizes-away.rs
Rename tests/codegen into tests/codegen-llvm
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vec-reserve-extend.rs
Rename tests/codegen into tests/codegen-llvm
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vec-shrink-panik.rs
Rename tests/codegen into tests/codegen-llvm
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vec-with-capacity.rs
Rename tests/codegen into tests/codegen-llvm
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vecdeque_no_panic.rs
Rename tests/codegen into tests/codegen-llvm
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vecdeque_pop_push.rs
tests: use max-llvm-major-version instead of ignore-llvm-version
2025-09-26 13:32:03 -04:00
vecdeque-drain.rs
Replace uses of 'CHECK: br' and 'CHECK-NOT: br' with 'br {{.*}}'.
2025-11-21 13:04:48 -06:00
vecdeque-nonempty-get-no-panic.rs
Rename tests/codegen into tests/codegen-llvm
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virtual-call-attrs-issue-137646.rs
Rename tests/codegen into tests/codegen-llvm
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virtual-function-elimination-32bit.rs
Rename tests/codegen into tests/codegen-llvm
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virtual-function-elimination.rs
Rename tests/codegen into tests/codegen-llvm
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vtable-loads.rs
Rename tests/codegen into tests/codegen-llvm
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vtable-upcast.rs
Rename tests/codegen into tests/codegen-llvm
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wasm_casts_trapping.rs
Rename tests/codegen into tests/codegen-llvm
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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
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zst-offset.rs
Rename tests/codegen into tests/codegen-llvm
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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
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