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Jonathan Brouwer 13f0399a57
Rollup merge of #151259 - bonega:fix-is-ascii-avx512, r=folkertdev 
Fix is_ascii performance regression on AVX-512 CPUs when compiling with -C target-cpu=native

## Summary

This PR fixes a severe performance regression in `slice::is_ascii` on AVX-512 CPUs when compiling with `-C target-cpu=native`.

On affected systems, the current implementation achieves only ~3 GB/s for large inputs, compared to ~60–70 GB/s previously (≈20–24× regression). This PR restores the original performance characteristics.

This change is intended as a **temporary workaround** for upstream LLVM poor codegen. Once the underlying LLVM issue is fixed and Rust is able to consume that fix, this workaround should be reverted.

  ## Problem

  When `is_ascii` is compiled with AVX-512 enabled, LLVM's auto-vectorization generates ~31 `kshiftrd` instructions to extract mask bits one-by-one, instead of using the efficient `pmovmskb`
  instruction. This causes a **~22x performance regression**.

  Because `is_ascii` is marked `#[inline]`, it gets inlined and recompiled with the user's target settings, affecting anyone using `-C target-cpu=native` on AVX-512 CPUs.

## Root cause (upstream)

The underlying issue appears to be an LLVM vectorizer/backend bug affecting certain AVX-512 patterns.

An upstream issue has been filed by @folkertdev  to track the root cause: llvm/llvm-project#176906

Until this is resolved in LLVM and picked up by rustc, this PR avoids triggering the problematic codegen pattern.

  ## Solution

  Replace the counting loop with explicit SSE2 intrinsics (`_mm_movemask_epi8`) that force `pmovmskb` codegen regardless of CPU features.

  ## Godbolt Links (Rust 1.92)

  | Pattern | Target | Link | Result |
  |---------|--------|------|--------|
  | Counting loop (old) | Default SSE2 | https://godbolt.org/z/sE86xz4fY | `pmovmskb` |
  | Counting loop (old) | AVX-512 (znver4) | https://godbolt.org/z/b3jvMhGd3 | 31x `kshiftrd` (broken) |
  | SSE2 intrinsics (fix) | Default SSE2 | https://godbolt.org/z/hMeGfeaPv | `pmovmskb` |
  | SSE2 intrinsics (fix) | AVX-512 (znver4) | https://godbolt.org/z/Tdvdqjohn | `vpmovmskb` (fixed) |

  ## Benchmark Results

  **CPU:** AMD Ryzen 5 7500F (Zen 4 with AVX-512)

  ### Default Target (SSE2) — Mixed

  | Size | Before | After | Change |
  |------|--------|-------|--------|
  | 4 B | 1.8 GB/s | 2.0 GB/s | **+11%** |
  | 8 B | 3.2 GB/s | 5.8 GB/s | **+81%** |
  | 16 B | 5.3 GB/s | 8.5 GB/s | **+60%** |
  | 32 B | 17.7 GB/s | 15.8 GB/s | -11% |
  | 64 B | 28.6 GB/s | 25.1 GB/s | -12% |
  | 256 B | 51.5 GB/s | 48.6 GB/s | ~same |
  | 1 KB | 64.9 GB/s | 60.7 GB/s | ~same |
  | 4 KB+ | ~68-70 GB/s | ~68-72 GB/s | ~same |

  ### Native Target (AVX-512) — Up to 24x Faster

  | Size | Before | After | Speedup |
  |------|--------|-------|---------|
  | 4 B | 1.2 GB/s | 2.0 GB/s | **1.7x** |
  | 8 B | 1.6 GB/s | 5.0 GB/s | **3.3x** |
  | 16 B | ~7 GB/s | ~7 GB/s | ~same |
  | 32 B | 2.9 GB/s | 14.2 GB/s | **4.9x** |
  | 64 B | 2.9 GB/s | 23.2 GB/s | **8x** |
  | 256 B | 2.9 GB/s | 47.2 GB/s | **16x** |
  | 1 KB | 2.8 GB/s | 60.0 GB/s | **21x** |
  | 4 KB+ | 2.9 GB/s | ~68-70 GB/s | **23-24x** |

  ### Summary

  - **SSE2 (default):** Small inputs (4-16 B) 11-81% faster; 32-64 B ~11% slower; large inputs unchanged
  - **AVX-512 (native):** 21-24x faster for inputs ≥1 KB, peak ~70 GB/s (was ~3 GB/s)

  Note: this is the pure ascii path, but the story is similar for the others.
  See linked bench project.

  ## Test Plan

  - [x] Assembly test (`slice-is-ascii-avx512.rs`) verifies no `kshiftrd` with AVX-512
  - [x] Existing codegen test updated to `loongarch64`-only (auto-vectorization still used there)
  - [x] Fuzz testing confirms old/new implementations produce identical results (~53M iterations)
  - [x] Benchmarks confirm performance improvement
  - [x] Tidy checks pass

  ## Reproduction / Test Projects

  Standalone validation tools: https://github.com/bonega/is-ascii-fix-validation

  - `bench/` - Criterion benchmarks for SSE2 vs AVX-512 comparison
  - `fuzz/` - Compares old/new implementations with libfuzzer

  ## Related Issues
  - issue opened by @folkertdev llvm/llvm-project#176906
  - Regression introduced in https://github.com/rust-lang/rust/pull/130733
2026-01-24 08:18:05 +01:00
..
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 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 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 Replace uses of 'CHECK: br' and 'CHECK-NOT: br' with 'br {{.*}}'. 2025-11-21 13:04:48 -06:00
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 Rollup merge of #150288 - offload-bench-fix, r=ZuseZ4 2026-01-20 18:00:08 +11:00
hint Rename tests/codegen into tests/codegen-llvm 2025-07-22 14:28:48 +02:00
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 Remove the explicit branch hint from const_panic 2025-12-29 10:30:02 -05:00
issues fix: add CHECK directives to ret comments and be more pervasive with directive contents 2026-01-03 12:50:38 +10:30
lib-optimizations Revert "avoid phi node for pointers flowing into Vec appends #130998" 2026-01-15 09:37:16 +08:00
loongarch-abi llvm: Tolerate dead_on_return attribute changes 2026-01-21 23:39:03 +00:00
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 sess: default to v0 symbol mangling 2025-11-19 11:55:09 +00:00
scalable-vectors codegen: implement repr(scalable) 2025-12-16 11:00:12 +00:00
simd stabilize s390x_target_feature_vector 2025-11-06 12:49:48 +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
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 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 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 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
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 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 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 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-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 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-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 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 Fix dso_local for external statics with linkage 2025-12-29 19:26:34 +00:00
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 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 llvm: Tolerate dead_on_return attribute changes 2026-01-21 23:39:03 +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-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-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-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-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 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
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 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
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 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_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-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
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
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 Stabilize unchecked_neg and unchecked_shifts 2025-11-19 13:19:22 +04:00
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-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 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 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