rust/codegen at 974bc455ee2d623ecda20e86ceed5907a47630e0 - rust

History

bors dfa88b328f Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin Implement intrinsics with fallback bodies fixes #93145 (though we can port many more intrinsics) cc #63585 The way this works is that the backend logic for generating custom code for intrinsics has been made fallible. The only failure path is "this intrinsic is unknown". The `Instance` (that was `InstanceDef::Intrinsic`) then gets converted to `InstanceDef::Item`, which represents the fallback body. A regular function call to that body is then codegenned. This is currently implemented for * codegen_ssa (so llvm and gcc) * codegen_cranelift other backends will need to adjust, but they can just keep doing what they were doing if they prefer (though adding new intrinsics to the compiler will then require them to implement them, instead of getting the fallback body). cc `@scottmcm` `@WaffleLapkin` ### todo * [ ] miri support * [x] default intrinsic name to name of function instead of requiring it to be specified in attribute * [x] make sure that the bodies are always available (must be collected for metadata)		2024-02-16 09:53:01 +00:00
..
auxiliary
avr
cffi	Remove `ffi_returns_twice` feature	2024-01-30 22:09:09 +00:00
cross-crate-inlining
debug-accessibility	Adapt debug-accessibility tests for msvc-style enums	2023-12-15 11:45:03 +00:00
dllimports
enum
instrument-xray
intrinsics	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
issues	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
lib-optimizations
loongarch-abi
macos
naked-fn
non-terminate
remap_path_prefix
repr
riscv-abi
sanitizer	CFI: Add char to CFI integer normalization	2023-12-07 11:28:16 -08:00
simd	Update std::simd usage and test outputs	2023-11-26 09:02:25 -05:00
simd-intrinsic	Fix alignment passed down to LLVM for simd_masked_load	2023-12-12 13:11:59 +01:00
src-hash-algorithm
unwind-abis
aarch64-struct-align-128.rs
abi-efiapi.rs
abi-main-signature-16bit-c-int.rs
abi-main-signature-32bit-c-int.rs	llvm: Allow `noundef` in codegen tests	2024-01-02 18:02:17 +00:00
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	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
align-enum.rs
align-fn.rs
align-offset.rs
align-struct.rs	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
alloc-optimisation.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
array-clone.rs
array-codegen.rs
array-equality.rs
array-map.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
array-optimized.rs
ascii-char.rs	update test for new LLVM 18 codegen	2023-11-28 12:10:59 +00:00
asm-clobber_abi.rs
asm-clobbers.rs
asm-may_unwind.rs
asm-maybe-uninit.rs
asm-multiple-options.rs
asm-options.rs
asm-powerpc-clobbers.rs
asm-sanitize-llvm.rs
asm-target-clobbers.rs
async-closure-debug.rs	Build DebugInfo for coroutine-closure	2024-02-09 16:01:29 +00:00
async-fn-debug-awaitee-field.rs
async-fn-debug-msvc.rs
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
codemodels.rs
coercions.rs
cold-call-declare-and-call.rs
comparison-operators-2-tuple.rs	Remove an unneeded helper from the tuple library code	2023-11-25 22:25:00 -08:00
comparison-operators-newtype.rs
const_scalar_pair.rs
consts.rs
coroutine-debug-msvc.rs
coroutine-debug.rs
dealloc-no-unwind.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
debug-alignment.rs
debug-column-msvc.rs
debug-column.rs
debug-compile-unit-path.rs
debug-fndef-size.rs
debug-limited.rs
debug-line-directives-only.rs
debug-line-tables-only.rs
debug-linkage-name.rs
debug-vtable.rs
debuginfo-constant-locals.rs
debuginfo-generic-closure-env-names.rs
debuginfo-inline-callsite-location.rs	Split out `option::unwrap_failed` like we have `result::unwrap_failed`	2024-01-14 12:45:01 -08:00
deduced-param-attrs.rs
default-hidden-visibility.rs	Add unstable `-Zdefault-hidden-visibility` cmdline flag for `rustc`.	2023-12-13 21:14:23 +00:00
default-requires-uwtable.rs
direct-access-external-data.rs	Add unstable `-Z direct-access-external-data` cmdline flag for `rustc`	2024-01-16 19:15:06 +08:00
drop-in-place-noalias.rs
drop.rs
dst-vtable-align-nonzero.rs
dst-vtable-size-range.rs
ehcontguard_disabled.rs
ehcontguard_enabled.rs	convert ehcont-guard to an unstable option	2023-11-21 14:24:23 -08:00
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	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
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	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
function-arguments.rs	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
function-return.rs	Add `-Zfunction-return={keep,thunk-extern}` option	2023-11-30 20:21:31 +01:00
gdb_debug_script_load.rs
generic-debug.rs
global_asm_include.rs
global_asm_x2.rs
global_asm.rs
i128-x86-align.rs	Directly use volatile_load intrinsic	2024-01-19 10:52:01 +01:00
infallible-unwrap-in-opt-z.rs	adapt test for v0 symbol mangling	2024-01-24 14:57:21 +00:00
inherit_overflow.rs	Replace legacy ConstProp by GVN.	2023-12-24 20:08:57 +00:00
inline-always-works-always.rs
inline-debuginfo.rs
inline-function-args-debug-info.rs
inline-hint.rs
instrument-coverage-off.rs
instrument-coverage.rs
instrument-mcount.rs
integer-cmp.rs
integer-overflow.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
internalize-closures.rs
intrinsic-no-unnamed-attr.rs
is_val_statically_known.rs	Support safe intrinsics with fallback bodies	2024-02-12 17:55:36 +00:00
issue-97217.rs
iter-repeat-n-trivial-drop.rs	tests: LLVM 18 infers an extra noalias here	2024-02-13 10:33:40 +01:00
layout-size-checks.rs
lifetime_start_end.rs
link_section.rs
link-dead-code.rs
llvm_module_flags.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	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
match-unoptimized.rs
maybeuninit-rvo.rs	Add codegen test for RVO on MaybeUninit	2024-01-03 21:18:07 +01:00
mem-replace-big-type.rs
mem-replace-simple-type.rs
merge-functions.rs
method-declaration.rs
mir_zst_stores.rs
mir-inlined-line-numbers.rs
move-before-nocapture-ref-arg.rs
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
overaligned-constant.rs	tests: fix overaligned-constant to not over-specify getelementptr instr	2023-12-21 15:53:28 -05:00
packed.rs
panic-abort-windows.rs
panic-in-drop-abort.rs
panic-unwind-default-uwtable.rs
personality_lifetimes.rs	Make test compatible with 32-bit as well	2024-01-05 11:45:57 +01:00
pgo-counter-bias.rs
pgo-instrumentation.rs
pic-relocation-model.rs
pie-relocation-model.rs
ptr-arithmetic.rs
ptr-read-metadata.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
README.md
refs.rs	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
repeat-trusted-len.rs
scalar-pair-bool.rs	Separate immediate and in-memory ScalarPair representation	2023-12-15 17:42:05 +01:00
set-discriminant-invalid.rs
slice_as_from_ptr_range.rs
slice-as_chunks.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
slice-indexing.rs
slice-init.rs
slice-iter-fold.rs
slice-iter-len-eq-zero.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
slice-iter-nonnull.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
slice-position-bounds-check.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
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	llvm: Allow `noundef` in codegen tests	2024-01-02 18:02:17 +00:00
split-lto-unit.rs
sroa-fragment-debuginfo.rs
sse42-implies-crc32.rs
stack-probes-inline.rs	Enable stack probes on aarch64 for LLVM 18	2023-12-07 17:17:00 -08:00
stack-protector.rs
static-relocation-model-msvc.rs
staticlib-external-inline-fns.rs
stores.rs
swap-large-types.rs
swap-small-types.rs	Tweak the threshold for chunked swapping	2024-01-19 23:00:34 -08:00
target-cpu-on-functions.rs
target-feature-inline-closure.rs
target-feature-overrides.rs
thin-lto.rs	Add thinlto support to codegen, assembly and coverage tests	2023-11-30 18:48:03 +08:00
thread-local.rs
tied-features-strength.rs
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
tuple-layout-opt.rs
unchecked_shifts.rs
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
unwind-landingpad-inline.rs
used_with_arg.rs
var-names.rs
vec_pop_push_noop.rs	update codegen tests	2024-01-22 15:46:32 +01:00
vec-as-ptr.rs
vec-calloc.rs
vec-in-place.rs
vec-iter-collect-len.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
vec-iter.rs	mark vec::IntoIter pointers as `!nonnull`	2024-01-07 03:44:04 +01:00
vec-optimizes-away.rs	Remove uses of no-system-llvm	2024-01-23 10:31:07 +01:00
vec-reserve-extend.rs	update codegen tests	2024-01-22 15:46:32 +01:00
vec-shrink-panik.rs
vecdeque_no_panic.rs
vecdeque-nonempty-get-no-panic.rs
virtual-function-elimination-32bit.rs
virtual-function-elimination.rs
wasm_casts_trapping.rs
wasm_exceptions.rs
zip.rs
zst-offset.rs	Address review comments	2024-01-02 15:03:14 +01:00

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