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rust/tests/codegen
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Matthias Krüger 260e07b0cb
Rollup merge of #115626 - clarfonthey:unchecked-math, r=thomcc 
Clean up unchecked_math, separate out unchecked_shifts

Tracking issue: #85122

Changes:

1. Remove `const_inherent_unchecked_arith` flag and make const-stability flags the same as the method feature flags. Given the number of other unsafe const fns already stabilised, it makes sense to just stabilise these in const context when they're stabilised.
2. Move `unchecked_shl` and `unchecked_shr` into a separate `unchecked_shifts` flag, since the semantics for them are unclear and they'll likely be stabilised separately as a result.
3. Add an `unchecked_neg` method exclusively to signed integers, under the `unchecked_neg` flag. This is because it's a new API and probably needs some time to marinate before it's stabilised, and while it *would* make sense to have a similar version for unsigned integers since `checked_neg` also exists for those there is absolutely no case where that would be a good idea, IMQHO.

The longer-term goal here is to prepare the `unchecked_math` methods for an FCP and stabilisation since they've existed for a while, their semantics are clear, and people seem in favour of stabilising them.
2023-11-01 11:29:41 +01:00
..
auxiliary
avr
cffi
dllimports
enum
instrument-xray Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
intrinsics
issues adjust how closure/generator types and rvalues are printed 2023-09-21 22:20:58 +02:00
lib-optimizations restrict test to x86-64 2023-09-02 13:42:58 +02:00
loongarch-abi
macos Raise minimum supported macOS to 10.12 2023-09-23 19:14:25 -05:00
naked-fn
non-terminate
remap_path_prefix
repr add support for rustc_abi(assert_eq) and use it to test some repr(transparent) cases 2023-09-07 09:14:29 +02:00
riscv-abi
sanitizer Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
simd Add a wishlist FIXME 2023-10-06 07:05:09 +00:00
simd-intrinsic
src-hash-algorithm Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
unwind-abis
aarch64-struct-align-128.rs
abi-efiapi.rs
abi-main-signature-16bit-c-int.rs
abi-main-signature-32bit-c-int.rs
abi-repr-ext.rs
abi-sysv64.rs
abi-x86_64_sysv.rs
abi-x86-interrupt.rs
addr-of-mutate.rs
adjustments.rs
align-byval-vector.rs
align-byval.rs
align-enum.rs
align-fn.rs
align-offset.rs
align-struct.rs
alloc-optimisation.rs
array-clone.rs
array-codegen.rs Copy 1-element arrays as scalars, not vectors 2023-10-07 00:10:32 -07:00
array-equality.rs
array-map.rs
array-optimized.rs Copy 1-element arrays as scalars, not vectors 2023-10-07 00:10:32 -07:00
ascii-char.rs
asm-clobber_abi.rs
asm-clobbers.rs
asm-may_unwind.rs
asm-maybe-uninit.rs Allow MaybeUninit in input and output of inline assembly 2023-08-23 21:57:18 +09:00
asm-multiple-options.rs
asm-options.rs
asm-powerpc-clobbers.rs
asm-sanitize-llvm.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
asm-target-clobbers.rs
async-fn-debug-awaitee-field.rs s/generator/coroutine/ 2023-10-20 21:14:01 +00:00
async-fn-debug-msvc.rs s/generator/coroutine/ 2023-10-20 21:14:01 +00:00
async-fn-debug.rs
atomic-operations.rs
autovectorize-f32x4.rs
binary-search-index-no-bound-check.rs
bool-cmp.rs
box-uninit-bytes.rs
bpf-alu32.rs
branch-protection.rs
call-llvm-intrinsics.rs
call-metadata.rs
catch-unwind.rs
cdylib-external-inline-fns.rs
cf-protection.rs
cfguard-checks.rs
cfguard-disabled.rs
cfguard-nochecks.rs
cfguard-non-msvc.rs
char-ascii-branchless.rs Refactor some char, u8 ascii functions to be branchless 2023-10-26 21:48:36 -04:00
codemodels.rs
coercions.rs
cold-call-declare-and-call.rs Use preserve_mostcc for extern "rust-cold" 2023-08-26 17:42:59 -07:00
comparison-operators-2-tuple.rs
comparison-operators-newtype.rs
const_scalar_pair.rs
consts.rs
coroutine-debug-msvc.rs Rename lots of files that had generator in their name 2023-10-20 21:14:02 +00:00
coroutine-debug.rs Rename lots of files that had generator in their name 2023-10-20 21:14:02 +00:00
dealloc-no-unwind.rs
debug-alignment.rs
debug-column-msvc.rs
debug-column.rs
debug-compile-unit-path.rs
debug-fndef-size.rs Ignore MSVC in test. 2023-10-08 16:45:45 +00:00
debug-limited.rs
debug-line-directives-only.rs
debug-line-tables-only.rs
debug-linkage-name.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
debug-vtable.rs
debuginfo-constant-locals.rs
debuginfo-generic-closure-env-names.rs
debuginfo-inline-callsite-location.rs Deduplicate inlined function debug info, but create a new lexical scope to child subsequent scopes and variables from colliding 2023-09-01 14:27:21 -07:00
deduced-param-attrs.rs
default-requires-uwtable.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
drop-in-place-noalias.rs
drop.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
dst-vtable-align-nonzero.rs
dst-vtable-size-range.rs
enable-lto-unit-splitting.rs
export-no-mangle.rs
external-no-mangle-fns.rs
external-no-mangle-statics.rs
fastcall-inreg.rs
fatptr.rs
fewer-names.rs
float_math.rs
fn-impl-trait-self.rs
foo.s
force-frame-pointers.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
force-no-unwind-tables.rs
force-unwind-tables.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
frame-pointer.rs
function-arguments-noopt.rs
function-arguments.rs
gdb_debug_script_load.rs
generic-debug.rs
global_asm_include.rs
global_asm_x2.rs
global_asm.rs
inherit_overflow.rs
inline-always-works-always.rs
inline-debuginfo.rs
inline-function-args-debug-info.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
inline-hint.rs
instrument-coverage-off.rs coverage: Add UI tests for values accepted by -Cinstrument-coverage 2023-10-23 17:41:40 +11:00
instrument-coverage.rs coverage: Add UI tests for values accepted by -Cinstrument-coverage 2023-10-23 17:41:40 +11:00
instrument-mcount.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
integer-cmp.rs
integer-overflow.rs
internalize-closures.rs
intrinsic-no-unnamed-attr.rs
issue-97217.rs Limit to LLVM 17.0.2 to work around WinEH codegen bug 2023-10-02 11:06:38 +02:00
iter-repeat-n-trivial-drop.rs
layout-size-checks.rs
lifetime_start_end.rs
link_section.rs
link-dead-code.rs
llvm-ident.rs
loads.rs
local-generics-in-exe-internalized.rs
lto-removes-invokes.rs
mainsubprogram.rs
mainsubprogramstart.rs
match-optimized.rs
match-optimizes-away.rs
match-unoptimized.rs
mem-replace-big-type.rs
mem-replace-simple-type.rs Stop emitting non-power-of-two vectors in basic LLVM codegen 2023-08-25 20:06:57 -07:00
merge-functions.rs
method-declaration.rs
mir_zst_stores.rs
mir-inlined-line-numbers.rs
move-before-nocapture-ref-arg.rs add codegen test for #107436 2023-08-26 18:14:47 +09:00
move-operands.rs
no_builtins-at-crate.rs
no-assumes-on-casts.rs
no-dllimport-w-cross-lang-lto.rs
no-jump-tables.rs
no-plt.rs
noalias-box-off.rs
noalias-box.rs
noalias-flag.rs
noalias-refcell.rs
noalias-rwlockreadguard.rs
noalias-unpin.rs
noreturn-uninhabited.rs
noreturnflag.rs
nounwind.rs
nrvo.rs
optimize-attr-1.rs
option-as-slice.rs
option-nonzero-eq.rs
packed.rs
panic-abort-windows.rs
panic-in-drop-abort.rs
panic-unwind-default-uwtable.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
personality_lifetimes.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
pgo-counter-bias.rs
pgo-instrumentation.rs
pic-relocation-model.rs
pie-relocation-model.rs
ptr-arithmetic.rs
ptr-read-metadata.rs
README.md
refs.rs
repeat-trusted-len.rs
scalar-pair-bool.rs
set-discriminant-invalid.rs
slice_as_from_ptr_range.rs
slice-as_chunks.rs update tests that are ignored by debug 2023-09-01 04:01:54 +08:00
slice-indexing.rs
slice-init.rs
slice-iter-fold.rs
slice-iter-len-eq-zero.rs
slice-iter-nonnull.rs update tests that are ignored by debug 2023-09-01 04:01:54 +08:00
slice-position-bounds-check.rs
slice-ref-equality.rs
slice-reverse.rs
slice-windows-no-bounds-check.rs
some-abis-do-extend-params-to-32-bits.rs
some-global-nonnull.rs
sparc-struct-abi.rs
split-lto-unit.rs
sroa-fragment-debuginfo.rs Restrict test to x86_64. 2023-08-26 22:55:52 +00:00
sse42-implies-crc32.rs
stack-probes-call.rs
stack-probes-inline.rs
stack-protector.rs
static-relocation-model-msvc.rs
staticlib-external-inline-fns.rs
stores.rs
swap-large-types.rs
swap-small-types.rs Stop emitting non-power-of-two vectors in basic LLVM codegen 2023-08-25 20:06:57 -07:00
target-cpu-on-functions.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
target-feature-inline-closure.rs Don't accidentally detect the commit hash as an fadd instruction 2023-10-10 16:59:49 +11:00
target-feature-overrides.rs
thread-local.rs
tied-features-strength.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
to_vec.rs
trailing_zeros.rs
transmute-optimized.rs
transmute-scalar.rs
try_identity.rs
try_question_mark_nop.rs
tune-cpu-on-functions.rs Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
tuple-layout-opt.rs Remove some wasm/emscripten ignores 2023-08-25 19:48:20 -04:00
unchecked_shifts.rs Clean up unchecked_math, separate out unchecked_shifts 2023-10-13 02:17:08 -04:00
unchecked-float-casts.rs
uninit-consts.rs
union-abi.rs
unwind-and-panic-abort.rs
unwind-extern-exports.rs
unwind-extern-imports.rs
unwind-landingpad-cold.rs Limit to LLVM 17.0.2 to work around WinEH codegen bug 2023-10-02 11:06:38 +02:00
unwind-landingpad-inline.rs Limit to LLVM 17.0.2 to work around WinEH codegen bug 2023-10-02 11:06:38 +02:00
used_with_arg.rs
var-names.rs
vec_pop_push_noop.rs Add invariant to Vec::pop that len < cap if pop successful 2023-10-16 18:49:25 +02:00
vec-as-ptr.rs
vec-calloc.rs
vec-in-place.rs
vec-iter-collect-len.rs
vec-optimizes-away.rs
vec-shrink-panik.rs
vecdeque_no_panic.rs
vecdeque-nonempty-get-no-panic.rs Add test to guard against VecDeque optimization regression 2023-09-21 20:42:21 -07:00
virtual-function-elimination-32bit.rs
virtual-function-elimination.rs
wasm_casts_trapping.rs
wasm_exceptions.rs
zip.rs
zst-offset.rs

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