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Stuart Cook 48d684111e Rollup merge of #144549 - folkertdev:va-arg-arm, r=saethlin 
match clang's `va_arg` assembly on arm targets

tracking issue: https://github.com/rust-lang/rust/issues/44930

For this example

```rust
#![feature(c_variadic)]

#[unsafe(no_mangle)]
unsafe extern "C" fn variadic(a: f64, mut args: ...) -> f64 {
    let b = args.arg::<f64>();
    let c = args.arg::<f64>();

    a + b + c
}
```

We currently generate (via llvm):

```asm
variadic:
    sub     sp, sp, #12
    stmib   sp, {r2, r3}
    vmov    d0, r0, r1
    add     r0, sp, #4
    vldr    d1, [sp, #4]
    add     r0, r0, #15
    bic     r0, r0, #7
    vadd.f64        d0, d0, d1
    add     r1, r0, #8
    str     r1, [sp]
    vldr    d1, [r0]
    vadd.f64        d0, d0, d1
    vmov    r0, r1, d0
    add     sp, sp, #12
    bx      lr
```

LLVM is not doing a good job. In fact, it's well-known that LLVM's implementation of `va_arg` is kind of bad, and we implement it ourselves (based on clang) for many targets already. For arm,  our own `emit_ptr_va_arg` saves 3 instructions.

Next, it turns out it's important for LLVM to explicitly start and end the lifetime of the `va_list`. In https://github.com/rust-lang/rust/pull/146059 I already end the lifetime, but when looking at this again, I noticed that it is important to also start it, see https://godbolt.org/z/EGqvKTTsK: failing to explicitly start the lifetime uses an extra register.

So, the combination of `emit_ptr_va_arg` with starting/ending the lifetime makes rustc emit exactly the instructions that clang generates::

```asm
variadic:
    sub     sp, sp, #12
    stmib   sp, {r2, r3}
    vmov    d16, r0, r1
    vldr    d17, [sp, #4]
    vadd.f64        d16, d16, d17
    vldr    d17, [sp, #12]
    vadd.f64        d16, d16, d17
    vmov    r0, r1, d16
    add     sp, sp, #12
    bx      lr
```

The arguments to `emit_ptr_va_arg` are based on [the clang implementation](https://github.com/llvm/llvm-project/blob/03dc2a41f3d9a500e47b513de5c5008c06860d65/clang/lib/CodeGen/Targets/ARM.cpp#L798-L844).

r? ``@workingjubilee`` (I can re-roll if your queue is too full, but you do seem like the right person here)

try-job: armhf-gnu
2025-09-12 20:02:10 +10:00
..
asm
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
autodiff
Update autodiff tests for the new intrinsics impl
2025-08-14 18:33:43 +00:00
autovec
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
auxiliary
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
avr
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
bounds-checking
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
cffi
stabilize extended_varargs_abi_support
2025-09-02 08:48:12 +02:00
compiletest-self-test
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
tests: fix RISC-V failures and adjust transmute-scalar.rs target
2025-08-18 19:37:13 +00:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
make prefetch intrinsics safe
2025-08-20 00:35:42 +02:00
issues
Adjust issue-118306.rs test after LLVM change
2025-09-02 12:04:04 +02:00
lib-optimizations
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
loongarch-abi
Rollup merge of #145709 - heiher:issue-145692-1, r=jackh726
2025-09-05 01:53:20 -04:00
macos
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
meta-filecheck
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
naked-fn
Verify llvm-needs-components are not empty and match the --target value
2025-07-29 11:20:23 -07:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
riscv-abi
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
sanitizer
-Zsanitize and -Zsanitizer-cfi-normalize-integers flags are now target modifiers with custom consistency check function
2025-08-21 16:08:00 +07:00
simd
Fix tests/codegen-llvm/simd/extract-insert-dyn.rs test failure on riscv64
2025-07-28 11:58:38 +00:00
simd-intrinsic
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
src-hash-algorithm
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
unwind-abis
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
aarch64-softfloat.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
aarch64-struct-align-128.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
abi-efiapi.rs
Verify llvm-needs-components are not empty and match the --target value
2025-07-29 11:20:23 -07:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
abi-sysv64.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
abi-win64-zst.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
abi-x86-interrupt.rs
Enforce correct number of arguments for "x86-interrupt" functions
2025-08-20 18:03:57 +03:00
abi-x86-sse.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
addr-of-mutate.rs
Use captures(address) instead of captures(none) for indirect args
2025-08-26 16:16:23 +02:00
adjustments.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
align-byval-alignment-mismatch.rs
llvm: Accept new LLVM lifetime format
2025-08-11 22:00:41 +00:00
align-byval-vector.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
align-byval.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Add test for addrspacecasting global vars
2025-09-03 08:40:51 +02:00
array-clone.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-cmp.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-codegen.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-equality.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-from_fn.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-map.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-optimized.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
array-repeat.rs
stabilize array repeat
2025-08-15 16:42:21 +00:00
ascii-char.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
assign-desugar-debuginfo.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
async-closure-debug.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
async-fn-debug-awaitee-field.rs
pub async fn implementation coroutine (func::{closure#0}) is monomorphized, when func itself is monomorphized
2025-09-01 13:45:00 +07:00
async-fn-debug-msvc.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
async-fn-debug.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
atomic-operations.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
atomicptr.rs
stabilize strict provenance atomic ptr
2025-08-15 16:56:11 +00:00
autovectorize-f32x4.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
become-musttail.rs
Implement support for explicit tail calls in the MIR block builders and the LLVM codegen backend.
2025-07-26 01:02:29 +02:00
bigint-helpers.rs
Stop using uadd.with.overflow
2025-08-08 21:59:28 -07:00
binary-heap-peek-mut-pop-no-panic.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
binary-search-index-no-bound-check.rs
Consolidate panicking functions in slice/index.rs
2025-08-21 11:07:25 +01:00
bool-cmp.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
bounds-check-elision-slice-min.rs
Multiple bounds checking elision failures
2025-08-01 18:38:22 +01:00
box-default-debug-copies.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
box-uninit-bytes.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
bpf-alu32.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
branch-protection.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
c-variadic-lifetime.rs
explicitly start va_list lifetime
2025-09-03 00:19:18 +02:00
call-llvm-intrinsics.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
call-tmps-lifetime.rs
llvm: Accept new LLVM lifetime format
2025-08-11 22:00:41 +00:00
cast-optimized.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
cast-target-abi.rs
Fix LoongArch C function ABI when passing/returning structs containing floats
2025-08-21 18:00:26 +08:00
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
Verify llvm-needs-components are not empty and match the --target value
2025-07-29 11:20:23 -07:00
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-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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
comparison-operators-2-struct.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
comparison-operators-2-tuple.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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-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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
default-requires-uwtable.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
emscripten-catch-unwind-wasm-eh.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
fastcall-inreg.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
frame-pointer.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
function-arguments-noopt.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
function-arguments.rs
Use captures(address) instead of captures(none) for indirect args
2025-08-26 16:16:23 +02:00
function-return.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
gpu-kernel-abi.rs
Add amdgpu to gpu-kernel test
2025-09-03 08:40:58 +02:00
i128-wasm32-callconv.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
i128-x86-align.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
i128-x86-callconv.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
indirect-branch-cs-prefix.rs
Add -Zindirect-branch-cs-prefix option
2025-08-17 16:51:42 +02:00
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
integer-cmp.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
is_val_statically_known.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
issue-97217.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
iter-repeat-n-trivial-drop.rs
stabilize array repeat
2025-08-15 16:42:21 +00:00
layout-size-checks.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
lifetime_start_end.rs
llvm: Accept new LLVM lifetime format
2025-08-11 22:00:41 +00:00
link_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-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
Enforce correct number of arguments for "x86-interrupt" functions
2025-08-20 18:03:57 +03:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
no-assumes-on-casts.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
no-dllimport-w-cross-lang-lto.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
no-jump-tables.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
overaligned-constant.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
packed.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
panic-abort-windows.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
panic-in-drop-abort.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
panic-unwind-default-uwtable.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
pattern_type_symbols.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
precondition-checks.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
ptr-arithmetic.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
ptr-read-metadata.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
range_to_inclusive.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
range-attribute.rs
Tell LLVM about read-only captures
2025-08-20 19:08:16 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
regparm-inreg.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
riscv-target-abi.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
rust-abi-arch-specific-adjustment.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
s390x-simd.rs
update some s390x codegen tests
2025-08-20 16:35:33 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
slice-last-elements-optimization.rs
Consolidate panicking functions in slice/index.rs
2025-08-21 11:07:25 +01:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
some-global-nonnull.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
sparc-struct-abi.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
target-feature-overrides.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
tests: fix RISC-V failures and adjust transmute-scalar.rs target
2025-08-18 19:37:13 +00:00
try_question_mark_nop.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
uninit-repeat-in-aggregate.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
union-abi.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
union-aggregate.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
unwind-and-panic-abort.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
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
vecdeque_no_panic.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
vecdeque_pop_push.rs
Rename tests/codegen into tests/codegen-llvm
2025-07-22 14:28:48 +02:00
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
Don't special-case llvm.* as nounwind
2025-07-23 02:17:54 +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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