rust/tests/codegen
bors 06a53ddc0b Auto merge of #113758 - cjgillot:move-dse, r=JakobDegen,oli-obk
Turn copy into moves during DSE.

Dead store elimination computes whether removing a direct store to an unborrowed place is allowed.
Where removing a store is allowed, writing `uninit` is too.

This means that we can use this pass to transform `copy` operands into `move` operands. This is only interesting in call terminators, so we only handle those.

Special care is taken for the `use_both(_1, _1)` case:
- moving the second argument is ok, as `_1` is not live after the call;
- moving the first argument is not, as the second argument reads `_1`.

Fixes #75993
Fixes https://github.com/rust-lang/rust/issues/108068

r? `@RalfJung`
cc `@JakobDegen`
2023-07-20 15:05:39 +00:00
..
auxiliary
avr Always name the return place. 2023-07-08 15:38:40 +02:00
dllimports
instrument-xray
intrinsics Always name the return place. 2023-07-08 15:38:40 +02:00
issues cg_llvm: use index-based loop in write_operand_repeatedly 2023-06-11 00:04:53 -04:00
loongarch-abi tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
non-terminate
remap_path_prefix
riscv-abi Always name the return place. 2023-07-08 15:38:40 +02:00
simd-intrinsic Always name the return place. 2023-07-08 15:38:40 +02:00
src-hash-algorithm
unwind-abis codegen: add needs-unwind to tests that require it 2023-05-23 16:54:35 +02:00
aarch64-struct-align-128.rs aarch64-linux: properly handle 128bit aligned aggregates 2023-07-10 19:19:40 -04:00
abi-efiapi.rs
abi-main-signature-16bit-c-int.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
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 add align attr to addr-of-mutate test 2023-07-10 19:19:36 -04:00
adjustments.rs
align-byval-vector.rs implement vector-containing aggregate alignment for x86 darwin 2023-07-10 19:19:36 -04:00
align-byval.rs i686-windows: make requested alignment > 4 special case apply transitively 2023-07-14 17:48:13 -04:00
align-enum.rs
align-fn.rs
align-offset.rs assume the runtime range of align_offset 2023-05-05 04:22:51 -07:00
align-struct.rs
alloc-optimisation.rs Prevent insta-stable no alloc shim support 2023-05-11 14:35:09 +00:00
array-clone.rs
array-codegen.rs Always name the return place. 2023-07-08 15:38:40 +02:00
array-equality.rs
array-map.rs update array-map test for removed alloca 2023-07-10 19:19:35 -04:00
ascii-char.rs Add the basic ascii::Char type 2023-05-03 22:09:33 -07:00
asm-clobber_abi.rs
asm-clobbers.rs
asm-may_unwind.rs
asm-multiple-options.rs
asm-options.rs
asm-powerpc-clobbers.rs
asm-sanitize-llvm.rs
asm-target-clobbers.rs
async-fn-debug-awaitee-field.rs
async-fn-debug-msvc.rs
async-fn-debug.rs
atomic-operations.rs
autovectorize-f32x4.rs Test from_fn autovectorizes 2023-05-30 20:45:40 -07:00
binary-search-index-no-bound-check.rs Stop checking for the absense of something that doesn't exist 2023-05-12 21:59:26 -07:00
bool-cmp.rs
box-maybe-uninit-llvm14.rs codegen: allow the dso_local attribute 2023-05-23 16:54:33 +02:00
box-maybe-uninit.rs codegen: do not require the uwtables attribute 2023-05-23 16:54:34 +02:00
bpf-alu32.rs
branch-protection.rs
c-variadic-copy.rs
c-variadic-opt.rs
c-variadic.rs
call-llvm-intrinsics.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
call-metadata.rs codegen: allow extra attributes to functions when panic=abort 2023-05-23 16:54:30 +02:00
catch-unwind.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
cdylib-external-inline-fns.rs
cf-protection.rs
cfguard-checks.rs
cfguard-disabled.rs
cfguard-nochecks.rs
cfguard-non-msvc.rs
codemodels.rs
coercions.rs
cold-call-declare-and-call.rs
comparison-operators-2-tuple.rs
comparison-operators-newtype.rs
const_scalar_pair.rs Explain the reason for why a test exists 2023-05-31 14:07:16 +00:00
consts.rs Always name the return place. 2023-07-08 15:38:40 +02:00
dealloc-no-unwind.rs
debug-alignment.rs
debug-column-msvc.rs
debug-column.rs codegen: allow extra attributes to functions when panic=abort 2023-05-23 16:54:30 +02:00
debug-compile-unit-path.rs
debug-limited.rs
debug-line-directives-only.rs
debug-line-tables-only.rs
debug-linkage-name.rs
debug-vtable.rs Fix test 2023-05-11 14:35:10 +00:00
debuginfo-constant-locals.rs
debuginfo-generic-closure-env-names.rs
deduced-param-attrs.rs
default-requires-uwtable.rs
drop-in-place-noalias.rs drop-in-place-noalias test: needs -O to ensure attributes are added on nopt builders 2023-05-22 20:20:45 -04:00
drop.rs codegen: add needs-unwind to tests that require it 2023-05-23 16:54:35 +02:00
dst-vtable-align-nonzero.rs
dst-vtable-size-range.rs
enable-lto-unit-splitting.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
enum-bounds-check-derived-idx.rs
enum-bounds-check-issue-13926.rs
enum-bounds-check-issue-82871.rs
enum-bounds-check.rs
enum-debug-clike.rs
enum-debug-niche-2.rs Fix codegen tests 2023-06-10 08:31:06 +00:00
enum-debug-niche.rs
enum-debug-tagged.rs
enum-discriminant-value.rs
enum-match.rs Always name the return place. 2023-07-08 15:38:40 +02:00
enum-u128.rs Add test 2023-06-10 16:58:51 +00:00
export-no-mangle.rs
external-no-mangle-fns.rs
external-no-mangle-statics.rs codegen: allow the dso_local attribute 2023-05-23 16:54:33 +02:00
fastcall-inreg.rs
fatptr.rs
fewer-names.rs Always name the return place. 2023-07-08 15:38:40 +02:00
ffi-const.rs
ffi-out-of-bounds-loads.rs
ffi-pure.rs
ffi-returns-twice.rs
float_math.rs
fn-impl-trait-self.rs
foo.s
force-frame-pointers.rs
force-no-unwind-tables.rs
force-unwind-tables.rs
frame-pointer.rs
function-arguments-noopt.rs rustc_target: Add alignment to indirectly-passed by-value types, correcting the 2023-07-10 19:19:30 -04:00
function-arguments.rs rustc_target: Add alignment to indirectly-passed by-value types, correcting the 2023-07-10 19:19:30 -04:00
gdb_debug_script_load.rs
generator-debug-msvc.rs
generator-debug.rs
generic-debug.rs
global_asm_include.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
global_asm_x2.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
global_asm.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
i686-macosx-deployment-target.rs
i686-no-macosx-deployment-target.rs
inherit_overflow.rs
inline-always-works-always.rs
inline-debuginfo.rs
inline-function-args-debug-info.rs
inline-hint.rs
instrument-coverage.rs
instrument-mcount.rs
integer-cmp.rs
integer-overflow.rs
internalize-closures.rs
intrinsic-no-unnamed-attr.rs
iter-repeat-n-trivial-drop.rs Make test order-independent. 2023-07-19 09:59:35 +00:00
layout-size-checks.rs
lifetime_start_end.rs
link_section.rs codegen: allow the dso_local attribute 2023-05-23 16:54:33 +02:00
link-dead-code.rs
loads.rs
local-generics-in-exe-internalized.rs
lto-removes-invokes.rs
mainsubprogram.rs
mainsubprogramstart.rs
match-optimized.rs Always name the return place. 2023-07-08 15:38:40 +02:00
match-optimizes-away.rs
match-unoptimized.rs
mem-replace-big-type.rs Always name the return place. 2023-07-08 15:38:40 +02:00
mem-replace-simple-type.rs Always name the return place. 2023-07-08 15:38:40 +02:00
merge-functions.rs
mir_zst_stores.rs
mir-inlined-line-numbers.rs codegen: allow extra attributes to functions when panic=abort 2023-05-23 16:54:30 +02:00
move-operands.rs Enable MIR opts for test. 2023-07-19 09:59:12 +00:00
naked-functions.rs
naked-nocoverage.rs update codegent test to be independent of panic strategy 2023-06-14 12:52:02 +02:00
naked-noinline.rs codegen: allow the dso_local attribute 2023-05-23 16:54:33 +02:00
no_builtins-at-crate.rs Add the no-builtins attribute to functions when no_builtins is applied at the crate level. 2023-07-18 22:15:47 +08:00
no-assumes-on-casts.rs
no-dllimport-w-cross-lang-lto.rs
no-jump-tables.rs
no-plt.rs
noalias-box-off.rs make noalias-box-off filecheck more precise 2023-05-20 19:41:28 -04:00
noalias-box.rs
noalias-flag.rs
noalias-refcell.rs
noalias-rwlockreadguard.rs
noalias-unpin.rs
noreturn-uninhabited.rs
noreturnflag.rs
nounwind.rs
nrvo.rs Disable nrvo mir opt 2023-05-08 03:55:41 -07:00
optimize-attr-1.rs
option-as-slice.rs
option-nonzero-eq.rs Also assume wrap-around discriminants in as MIR building 2023-05-18 10:28:36 -07:00
packed.rs
panic-abort-windows.rs
panic-in-drop-abort.rs
panic-unwind-default-uwtable.rs
personality_lifetimes.rs codegen: add needs-unwind to tests that require it 2023-05-23 16:54:35 +02:00
pgo-counter-bias.rs
pgo-instrumentation.rs
pic-relocation-model.rs
pie-relocation-model.rs
ptr-read-metadata.rs codegen: allow the dso_local attribute 2023-05-23 16:54:33 +02:00
README.md
refs.rs
repeat-trusted-len.rs Always name the return place. 2023-07-08 15:38:40 +02:00
repr-transparent-aggregates-1.rs test-various: run codegen and assembly tests 2023-07-02 02:22:22 +02:00
repr-transparent-aggregates-2.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
repr-transparent-aggregates-3.rs
repr-transparent-sysv64.rs
repr-transparent.rs tests: Add tests for LoongArch64 2023-04-30 00:06:26 +08:00
sanitizer_memtag_attr_check.rs
sanitizer_scs_attr_check.rs
sanitizer-cfi-add-canonical-jump-tables-flag.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-add-enable-split-lto-unit-flag.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-checks-attr-no-sanitize.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-checks.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-metadata-attr-cfi-encoding.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-metadata-id-itanium-cxx-abi.rs Fix a codegen test 2023-06-22 15:36:46 +00:00
sanitizer-cfi-emit-type-metadata-itanium-cxx-abi-generalized.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-metadata-itanium-cxx-abi-normalized-generalized.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-metadata-itanium-cxx-abi-normalized.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-metadata-itanium-cxx-abi.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-emit-type-metadata-trait-objects.rs CFI: Fix encode_region: unexpected ReEarlyBound(0, 'a) 2023-05-23 16:44:03 +00:00
sanitizer-cfi-generalize-pointers.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-cfi-normalize-integers.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kasan-emits-instrumentation.rs
sanitizer-kcfi-add-kcfi-flag.rs
sanitizer-kcfi-emit-kcfi-operand-bundle-attr-no-sanitize.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi-generalized.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi-normalized-generalized.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi-normalized.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kcfi-emit-kcfi-operand-bundle.rs Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sanitizer-kcfi-emit-type-metadata-trait-objects.rs CFI: Fix encode_region: unexpected ReEarlyBound(0, 'a) 2023-05-23 16:44:03 +00:00
sanitizer-memory-track-orgins.rs
sanitizer-no-sanitize-inlining.rs
sanitizer-no-sanitize.rs
sanitizer-recover.rs
sanitizer-safestack-attr-check.rs Add SafeStack support to rustc 2023-05-26 15:18:54 -04:00
scalar-pair-bool.rs
set-discriminant-invalid.rs
simd_arith_offset.rs Always name the return place. 2023-07-08 15:38:40 +02:00
simd-wide-sum.rs Reenable all cases of simd-wide-sum 2023-07-11 20:21:32 -07:00
slice_as_from_ptr_range.rs
slice-as_chunks.rs
slice-indexing.rs
slice-init.rs Fortify codegen test. 2023-07-10 16:01:18 +00:00
slice-iter-fold.rs add codegen test for slice::Iter::fold 2023-06-12 23:47:08 +02:00
slice-iter-len-eq-zero.rs Always name the return place. 2023-07-08 15:38:40 +02:00
slice-iter-nonnull.rs Remove useless assumes from slice::iter(_mut) 2023-05-12 17:34:55 -07:00
slice-position-bounds-check.rs
slice-ref-equality.rs Perform reference propagation earlier. 2023-07-10 16:01:18 +00:00
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 Add cross-language LLVM CFI support to the Rust compiler 2023-05-03 22:41:29 +00:00
sse42-implies-crc32.rs
stack-probes-call.rs
stack-probes-inline.rs
stack-protector.rs tests: be even more permissive on attributes in one test 2023-06-23 09:48:00 -04:00
static-relocation-model-msvc.rs
staticlib-external-inline-fns.rs
stores.rs
swap-large-types.rs
swap-simd-types.rs Use load-store instead of memcpy for short integer arrays 2023-06-04 00:51:49 -07:00
swap-small-types.rs Use load-store instead of memcpy for short integer arrays 2023-06-04 00:51:49 -07:00
target-cpu-on-functions.rs
target-feature-overrides.rs
thread-local.rs
tied-features-strength.rs Create a structure to define the features from to_llvm_features. 2023-05-22 14:46:40 +01:00
to_vec.rs
transmute-optimized.rs
transmute-scalar.rs Always name the return place. 2023-07-08 15:38:40 +02:00
try_identity.rs
try_question_mark_nop.rs
tune-cpu-on-functions.rs
tuple-layout-opt.rs codegen: allow the dso_local attribute 2023-05-23 16:54:33 +02:00
unchecked_shifts.rs [libs] Simplify unchecked_{shl,shr} 2023-06-16 16:03:19 -07:00
unchecked-float-casts.rs
uninit-consts.rs Always name the return place. 2023-07-08 15:38:40 +02:00
union-abi.rs Always name the return place. 2023-07-08 15:38:40 +02:00
unpadded-simd.rs
unwind-and-panic-abort.rs
unwind-extern-exports.rs codegen: add needs-unwind to tests that require it 2023-05-23 16:54:35 +02:00
unwind-extern-imports.rs codegen: add needs-unwind to tests that require it 2023-05-23 16:54:35 +02:00
used_with_arg.rs
var-names.rs Always name the return place. 2023-07-08 15:38:40 +02:00
vec-as-ptr.rs
vec-calloc-llvm14.rs
vec-calloc.rs
vec-in-place.rs
vec-iter-collect-len.rs
vec-optimizes-away.rs Prevent insta-stable no alloc shim support 2023-05-11 14:35:09 +00:00
vec-shrink-panik.rs use indexed loop instead of ptr bumping 2023-06-14 22:22:41 +02:00
vecdeque_no_panic.rs
virtual-function-elimination-32bit.rs
virtual-function-elimination.rs
wasm_casts_trapping.rs
wasm_exceptions.rs add codegen-test: wasm-exceptions 2023-07-01 20:24:15 +02:00
x86_64-macosx-deployment-target.rs
x86_64-no-macosx-deployment-target.rs
zip.rs
zst-offset.rs

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