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rust/tests/codegen-llvm
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bors e9acbd99d3 Auto merge of #147827 - saethlin:maybeuninit-codegen2, r=scottmcm 
Fix MaybeUninit codegen using GVN

This is an alternative to https://github.com/rust-lang/rust/pull/142837, based on https://github.com/rust-lang/rust/pull/146355#discussion_r2421651968.

The general approach I took here is to aggressively propagate anything that is entirely uninitialized. GVN generally takes the approach of only synthesizing small types, but we need to generate large consts to fix the codegen issue.

I also added a special case to MIR dumps for this where now an entirely uninit const is printed as `const <uninit>`, because otherwise we end up with extremely verbose dumps of the new consts.

After GVN though, we still end up with a lot of MIR that looks like this:
```
StorageLive(_1);
_1 = const <uninit>;
_2 = &raw mut _1;
```
Which will break tests/codegen-llvm/maybeuninit-rvo.rs with the naive lowering. I think the ideal fix here is to somehow omit these `_1 = const <uninit>` assignments that come directly after a StorageLive, but I'm not sure how to do that. For now at least, ignoring such assignments (even if they don't come right after a StorageLive) in codegen seems to work.

Note that since GVN is based on synthesizing a `ConstValue`  which has a defined layout, this scenario still gets deoptimized by LLVM.
```rust
#![feature(rustc_attrs)]
#![crate_type = "lib"]
use std::mem::MaybeUninit;

#[unsafe(no_mangle)]
pub fn oof() -> [[MaybeUninit<u8>; 8]; 8] {
    #[rustc_no_mir_inline]
    pub fn inner<T: Copy>() -> [[MaybeUninit<T>; 8]; 8] {
        [[MaybeUninit::uninit(); 8]; 8]
    }

    inner()
}
```
This case can be handled correctly if enough inlining has happened, or it could be handled by post-mono GVN. Synthesizing `UnevaluatedConst` or some other special kind of const seems dubious.
2025-11-23 17:09:07 +00:00
..
annotate-moves
Add -Zannotate-moves for profiler visibility of move/copy operations
2025-11-06 15:39:45 -08:00
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
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
stabilize extern_system_varargs
2025-11-09 10:13:38 +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
use fallback impl in LLVM backend
2025-11-06 08:02:10 +01:00
issues
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +00:00
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
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
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
sess: default to v0 symbol mangling
2025-11-19 11:55:09 +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_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
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
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
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
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
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_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
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
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
iterrangefrom-overflow-checks.rs
IterRangeFrom: overflow panic after yielding MAX
2025-11-15 21:29:59 -07:00
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
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_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
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
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_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-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
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_shifts.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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 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
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
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
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
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