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Guillaume Gomez 344b6a1668
Rollup merge of #130630 - taiki-e:s390x-clobber-abi, r=Amanieu 
Support clobber_abi and vector/access registers (clobber-only) in s390x inline assembly

This supports `clobber_abi` which is one of the requirements of stabilization mentioned in #93335.

This also supports vector registers (as `vreg`) and access registers (as `areg`) as clobber-only, which need to support clobbering of them to implement clobber_abi.

Refs:
- "1.2.1.1. Register Preservation Rules" section in ELF Application Binary Interface s390x Supplement, Version 1.6.1 (lzsabi_s390x.pdf in https://github.com/IBM/s390x-abi/releases/tag/v1.6.1)
- Register definition in LLVM:
  - Vector registers https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/SystemZ/SystemZRegisterInfo.td#L249
  - Access registers https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/SystemZ/SystemZRegisterInfo.td#L332

I have three questions:
- ~~ELF Application Binary Interface s390x Supplement says that `cc` (condition code, bits 18-19 of PSW) is "Volatile".
  However, we do not have a register class for `cc` and instead mark `cc` as clobbered unless `preserves_flags` is specified (https://github.com/rust-lang/rust/pull/111331).
  Therefore, in the current implementation, if both `preserves_flags` and `clobber_abi` are specified, `cc` is not marked as clobbered. Is this okay? Or even if `preserves_flags` is used, should `cc` be marked as clobbered if `clobber_abi` is used?~~ UPDATE: resolved https://github.com/rust-lang/rust/pull/130630#issuecomment-2367923121
- ~~ELF Application Binary Interface s390x Supplement says that `pm` (program mask, bits 20-23 of PSW) is "Cleared".
  There does not appear to be any registers associated with this in either [LLVM](https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/SystemZ/SystemZRegisterInfo.td) or [GCC](33ccc1314d/gcc/config/s390/s390.h (L407-L431)), so at this point I don't see any way other than to just ignore it. Is this okay as-is?~~ UPDATE: resolved https://github.com/rust-lang/rust/pull/130630#issuecomment-2367923121
- Is "areg" a good name for register class name for access registers? It may be a bit confusing between that and `reg_addr`, which uses the “a” constraint (https://github.com/rust-lang/rust/pull/119431)...

Note:

- GCC seems to [recognize only `a0` and `a1`](33ccc1314d/gcc/config/s390/s390.h (L428-L429)), and using `a[2-15]` [causes errors](https://godbolt.org/z/a46vx8jjn).
  Given that cg_gcc has a similar problem with other architecture (https://github.com/rust-lang/rustc_codegen_gcc/issues/485), I don't feel this is a blocker for this PR, but it is worth mentioning here.
- `vreg` should be able to accept `#[repr(simd)]` types as input if the `vector` target feature added in https://github.com/rust-lang/rust/pull/127506 is enabled, but core_arch has no s390x vector type and both `#[repr(simd)]` and `core::simd` are unstable, so I have not implemented it in this PR. EDIT: And supporting it is probably more complex than doing the equivalent on other architectures... https://github.com/rust-lang/rust/pull/88245#issuecomment-905559591

cc `@uweigand`

r? `@Amanieu`

`@rustbot` label +O-SystemZ
2024-10-01 17:32:07 +02:00
..
auxiliary Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
avr Let InstCombine remove Clone shims inside Clone shims 2024-07-25 15:14:42 -04:00
cffi Add -Zlint-llvm-ir 2024-08-29 18:12:31 +08:00
cross-crate-inlining [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-accessibility [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
dllimports Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
enum Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
float Adjust tests for x86 "Rust" ABI changes 2024-07-12 10:47:56 +01:00
instrument-coverage Disallow setting built-in cfgs via set the command-line 2024-08-07 14:08:34 +02:00
instrument-xray [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
intrinsics Don't codegen expect in opt-level=0 2024-09-04 11:49:00 +00:00
issues Improve autovectorization of to_lowercase / to_uppercase functions 2024-09-23 11:31:29 +02:00
lib-optimizations Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
loongarch-abi Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
macos Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
meta-filecheck Allow tests to specify a //@ filecheck-flags: header 2024-02-23 11:28:06 +11:00
naked-fn add repr to the allowlist for naked functions, and test that it works 2024-08-27 17:17:47 +02:00
non-terminate Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
patchable-function-entry Updated code for changes to RFC, added additional error handling, added 2024-06-25 19:00:02 +02:00
remap_path_prefix [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
repr tests: Move wasm32 to transparent-opaque-ptr.rs test 2024-09-18 12:31:51 -07:00
riscv-abi Let InstCombine remove Clone shims inside Clone shims 2024-07-25 15:14:42 -04:00
sanitizer riscv64imac: allow shadow call stack sanitizer 2024-08-29 21:48:48 +08:00
simd Ban non-array SIMD 2024-09-09 19:39:43 -07:00
simd-intrinsic Ban non-array SIMD 2024-09-09 19:39:43 -07:00
src-hash-algorithm [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
unwind-abis Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
aarch64-struct-align-128.rs Disallow setting built-in cfgs via set the command-line 2024-08-07 14:08:34 +02:00
abi-efiapi.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
abi-main-signature-16bit-c-int.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
abi-main-signature-32bit-c-int.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
abi-repr-ext.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
abi-sysv64.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
abi-x86_64_sysv.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
abi-x86-interrupt.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
addr-of-mutate.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
adjustments.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
align-byval-alignment-mismatch.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
align-byval-vector.rs Ban non-array SIMD 2024-09-09 19:39:43 -07:00
align-byval.rs tests: Remove test for wrong wasm codegen 2024-09-18 12:28:55 -07:00
align-enum.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
align-fn.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
align-offset.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
align-struct.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
alloc-optimisation.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
array-clone.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
array-cmp.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
array-codegen.rs use [N x i8] for alloca types 2024-04-11 21:42:35 -04:00
array-equality.rs Stabilize generic NonZero. 2024-04-22 18:48:47 +02:00
array-from_fn.rs test(std): Add codegen test for array::from_fn optimization 2024-08-10 10:44:24 +08:00
array-map.rs use [N x i8] for alloca types 2024-04-11 21:42:35 -04:00
array-optimized.rs Remove my scalar_copy_backend_type optimization attempt 2024-04-09 08:51:32 -07:00
array-repeat.rs update codegen test for array::repeat 2024-06-19 17:48:05 +02:00
ascii-char.rs codegen tests: Tolerate nuw nsw on trunc 2024-04-11 17:20:08 +00:00
asm-clobber_abi.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
asm-clobbers.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
asm-goto.rs Add tests for asm goto 2024-02-24 19:49:16 +00:00
asm-may_unwind.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
asm-maybe-uninit.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
asm-multiple-options.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
asm-options.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
asm-powerpc-clobbers.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
asm-s390x-clobbers.rs Support clobber_abi and vector/access registers (clobber-only) in s390x inline assembly 2024-09-21 01:51:26 +09:00
asm-sanitize-llvm.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
asm-target-clobbers.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
async-closure-debug.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
async-fn-debug-awaitee-field.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
async-fn-debug-msvc.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
async-fn-debug.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
atomic-operations.rs Reformat use declarations. 2024-07-29 08:26:52 +10:00
atomicptr.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
autovectorize-f32x4.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
binary-search-index-no-bound-check.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
bool-cmp.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
box-uninit-bytes.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
bpf-alu32.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
branch-protection-old-llvm.rs Set branch protection function attributes 2024-07-24 17:13:25 +02:00
branch-protection.rs Set branch protection function attributes 2024-07-24 17:13:25 +02:00
call-llvm-intrinsics.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
call-metadata.rs Add range attribute to scalar function results and arguments 2024-08-11 19:40:44 +02:00
cast-optimized.rs Add range attribute to scalar function results and arguments 2024-08-11 19:40:44 +02:00
cast-target-abi.rs Add -Zlint-llvm-ir 2024-08-29 18:12:31 +08:00
catch-unwind.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
cdylib-external-inline-fns.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
cf-protection.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
cfguard-checks.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
cfguard-disabled.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
cfguard-nochecks.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
cfguard-non-msvc.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
char-ascii-branchless.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
checked_ilog.rs add codegen test 2024-04-23 18:31:57 +02:00
checked_math.rs Also get add nuw from uN::checked_add 2024-06-23 13:29:06 -07:00
clone_as_copy.rs Simplify the canonical clone method to copy 2024-09-14 13:30:35 +08:00
clone-shims.rs Let InstCombine remove Clone shims inside Clone shims 2024-07-25 15:14:42 -04:00
codemodels.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
coercions.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
cold-call-declare-and-call.rs Disallow setting built-in cfgs via set the command-line 2024-08-07 14:08:34 +02:00
common_prim_int_ptr.rs Add range attribute to scalar function results and arguments 2024-08-11 19:40:44 +02:00
comparison-operators-2-tuple.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
comparison-operators-newtype.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
const_scalar_pair.rs Fix tests and bless 2024-04-24 13:12:33 +01:00
const-vector.rs Ban non-array SIMD 2024-09-09 19:39:43 -07:00
constant-branch.rs Compute reachable locals as part of non_ssa_locals 2024-09-21 01:07:00 -04:00
consts.rs Use FileCheck to parameterize codegen tests over hashes 2024-06-04 01:30:51 -07:00
coroutine-debug-msvc.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
coroutine-debug.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
dealloc-no-unwind.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
debug-alignment.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-column-msvc.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-column.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
debug-compile-unit-path.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
debug-fndef-size.rs Adjust dbg.value/dbg.declare checks for LLVM update 2024-05-06 23:15:48 +00:00
debug-limited.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-line-directives-only.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-line-tables-only.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-linkage-name.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debug-vtable.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
debuginfo-constant-locals.rs Adjust dbg.value/dbg.declare checks for LLVM update 2024-05-06 23:15:48 +00:00
debuginfo-generic-closure-env-names.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
debuginfo-inline-callsite-location.rs Rework MIR inlining debuginfo so function parameters show up in debuggers. 2024-08-12 19:20:00 -07:00
deduced-param-attrs.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
default-hidden-visibility.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
default-requires-uwtable.rs Disallow setting built-in cfgs via set the command-line 2024-08-07 14:08:34 +02:00
direct-access-external-data.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
dont_codegen_private_const_fn_only_used_in_const_eval.rs Also support generic constants 2024-06-05 15:40:11 +00:00
drop-in-place-noalias.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
drop.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
dst-offset.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
dst-vtable-align-nonzero.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
dst-vtable-size-range.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
ehcontguard_disabled.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
ehcontguard_enabled.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
emcripten-catch-unwind.rs Let InstCombine remove Clone shims inside Clone shims 2024-07-25 15:14:42 -04:00
enable-lto-unit-splitting.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
error-provide.rs Apply suggestion. 2024-06-16 17:19:25 +08:00
export-no-mangle.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
external-no-mangle-fns.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
external-no-mangle-statics.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
fastcall-inreg.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
fatptr.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
fewer-names.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
fixed-x18.rs Add -Zfixed-x18 2024-05-03 14:32:08 +02:00
float_math.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
fn-impl-trait-self.rs Update test directives for wasm32-wasip1 2024-03-11 09:36:35 -07:00
foo.s Move /src/test to /tests 2023-01-11 09:32:08 +00:00
force-frame-pointers.rs test: ignore force-frame-pointers test on some targets 2024-06-23 00:40:43 -07:00
force-no-unwind-tables.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
force-unwind-tables.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
frame-pointer.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
function-arguments-noopt.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
function-arguments.rs Add range attribute to scalar function results and arguments 2024-08-11 19:40:44 +02:00
function-return.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
gdb_debug_script_load.rs Make more of the test suite run on Mac Catalyst 2024-05-28 12:31:33 +02:00
generic-debug.rs reenable some windows tests 2024-07-14 13:48:29 +03:00
global_asm_include.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
global_asm_x2.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
global_asm.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
i128-x86-align.rs use [N x i8] for alloca types 2024-04-11 21:42:35 -04:00
infallible-unwrap-in-opt-z.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
inherit_overflow.rs Codegen const panic messages as function calls 2024-03-22 09:55:50 -04:00
inline-always-works-always.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
inline-debuginfo.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
inline-function-args-debug-info.rs Rework MIR inlining debuginfo so function parameters show up in debuggers. 2024-08-12 19:20:00 -07:00
inline-hint.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
instrument-mcount.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
integer-cmp.rs llvm 20: adapt integer comparison tests 2024-08-22 13:23:00 +00:00
integer-overflow.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
internalize-closures.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
intrinsic-no-unnamed-attr.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
is_val_statically_known.rs Fix is_val_statically_known for floats 2024-08-17 02:14:23 +01:00
issue-97217.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
iter-repeat-n-trivial-drop.rs Implement UncheckedIterator directly for RepeatN 2024-08-01 21:58:34 -07:00
layout-size-checks.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
lifetime_start_end.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
link_section.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
link-dead-code.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
llvm_module_flags.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
llvm-ident.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
loads.rs Stabilize generic NonZero. 2024-04-22 18:48:47 +02:00
local-generics-in-exe-internalized.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
lto-removes-invokes.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
mainsubprogram.rs reenable some windows tests 2024-07-14 13:48:29 +03:00
mainsubprogramstart.rs reenable some windows tests 2024-07-14 13:48:29 +03:00
match-optimized.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
match-optimizes-away.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
match-unoptimized.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
maybeuninit-rvo.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
mem-replace-big-type.rs ignore/fix layout-sensitive tests 2024-08-31 23:56:45 +02:00
mem-replace-simple-type.rs At debuginfo=0, don't inline debuginfo when inlining 2024-04-18 09:35:35 -07:00
merge-functions.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
method-declaration.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
mir_zst_stores.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
mir-aggregate-no-alloca.rs Unify Rvalue::Aggregate paths in cg_ssa 2024-05-11 21:22:51 -07:00
mir-inlined-line-numbers.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
move-before-nocapture-ref-arg.rs Update the minimum external LLVM to 17 2024-03-17 10:11:04 -07:00
move-operands.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
naked-asan.rs adapt a test for llvm 20 2024-09-09 13:29:47 +00:00
no_builtins-at-crate.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
no-alloca-inside-if-false.rs Compute reachable locals as part of non_ssa_locals 2024-09-21 01:07:00 -04:00
no-assumes-on-casts.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
no-dllimport-w-cross-lang-lto.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
no-jump-tables.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
no-plt.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
no-redundant-item-monomorphization.rs Port issue-7349 to a codegen test 2024-04-04 21:59:08 +01:00
noalias-box-off.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
noalias-box.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
noalias-flag.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
noalias-freeze.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
noalias-refcell.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
noalias-rwlockreadguard.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
noalias-unpin.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
noreturn-uninhabited.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
noreturnflag.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
nounwind.rs reenable some windows tests 2024-07-14 13:48:29 +03:00
nrvo.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
optimize-attr-1.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
option-as-slice.rs Use Option's discriminant as its size hint 2024-07-15 00:34:03 -07:00
option-niche-eq.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
overaligned-constant.rs use [N x i8] for alloca types 2024-04-11 21:42:35 -04:00
packed.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
panic-abort-windows.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
panic-in-drop-abort.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
panic-unwind-default-uwtable.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
pattern_type_symbols.rs Use FileCheck to parameterize codegen tests over hashes 2024-06-04 01:30:51 -07:00
personality_lifetimes.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
pgo-counter-bias.rs Use -Zno-profiler-runtime instead of //@ needs-profiler-support 2024-06-14 13:31:46 +10:00
pgo-instrumentation.rs Use -Zno-profiler-runtime instead of //@ needs-profiler-support 2024-06-14 13:31:46 +10:00
pic-relocation-model.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
pie-relocation-model.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
powerpc64le-struct-align-128.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
precondition-checks.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
ptr-arithmetic.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
ptr-read-metadata.rs adapt a codegen test for llvm 19 2024-04-29 13:03:45 +00:00
range-attribute.rs Add range attribute to scalar function results and arguments 2024-08-11 19:40:44 +02:00
README.md Move /src/test to /tests 2023-01-11 09:32:08 +00:00
refs.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
repeat-trusted-len.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
riscv-target-abi.rs Set target-abi module flag for RISC-V targets 2024-04-09 05:25:51 +02:00
scalar-pair-bool.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
set-discriminant-invalid.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
skip-mono-inside-if-false.rs Avoid lowering code under dead SwitchInt targets 2024-03-12 19:01:04 -04:00
slice_as_from_ptr_range.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
slice-as_chunks.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
slice-indexing.rs Use unchecked_sub in str indexing 2024-04-06 14:09:03 -04:00
slice-init.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
slice-iter-fold.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
slice-iter-len-eq-zero.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
slice-iter-nonnull.rs ignore/fix layout-sensitive tests 2024-08-31 23:56:45 +02:00
slice-pointer-nonnull-unwrap.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
slice-position-bounds-check.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
slice-ref-equality.rs Stabilize generic NonZero. 2024-04-22 18:48:47 +02:00
slice-reverse.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
slice-windows-no-bounds-check.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
some-abis-do-extend-params-to-32-bits.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
some-global-nonnull.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
sparc-struct-abi.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
split-lto-unit.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
sroa-fragment-debuginfo.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
sse42-implies-crc32.rs Fix codegen tests 2024-08-07 00:41:48 -04:00
stack-probes-inline.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
stack-protector.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
static-relocation-model-msvc.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
staticlib-external-inline-fns.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
step_by-overflow-checks.rs Don't emit divide-by-zero panic paths in StepBy::len 2024-04-06 11:37:57 -07:00
stores.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
swap-large-types.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
swap-small-types.rs use [N x i8] for alloca types 2024-04-11 21:42:35 -04:00
target-cpu-on-functions.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
target-feature-inline-closure.rs Add inline comments why we're forcing the target cpu 2024-05-01 16:54:20 -07:00
target-feature-overrides.rs Add implied features to non-target-feature functions 2024-08-07 00:41:48 -04:00
thin-lto.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
thread-local.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
tied-features-strength.rs tests: Update with new aarch64 target features 2024-08-27 12:06:30 +00:00
to_vec.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
trailing_zeros.rs Update the minimum external LLVM to 17 2024-03-17 10:11:04 -07:00
transmute-optimized.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
transmute-scalar.rs Lower transmutes from int to pointer type as gep on null 2024-03-11 18:19:17 -04:00
try_question_mark_nop.rs tests: allow trunc/select instructions to be missing 2024-09-17 08:55:26 -04:00
tune-cpu-on-functions.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
tuple-layout-opt.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
ub-checks.rs Put checks that detect UB under their own flag below debug_assertions 2024-04-06 11:21:47 -04:00
unchecked_shifts.rs codegen tests: Tolerate nuw nsw on trunc 2024-04-11 17:20:08 +00:00
unchecked-float-casts.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
uninit-consts.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
union-abi.rs Ban non-array SIMD 2024-09-09 19:39:43 -07:00
unwind-and-panic-abort.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
unwind-extern-exports.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
unwind-extern-imports.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
unwind-landingpad-cold.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
unwind-landingpad-inline.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
used_with_arg.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
var-names.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
vec_pop_push_noop.rs Fix test. 2024-03-29 15:37:43 -07:00
vec-as-ptr.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
vec-calloc.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
vec-in-place.rs add codegen test for issue 120493 2024-05-20 09:21:09 -05:00
vec-iter-collect-len.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
vec-iter.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
vec-len-invariant.rs Avoid reloading Vec::len across grow_one in push 2024-04-20 21:07:00 -04:00
vec-optimizes-away.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
vec-reserve-extend.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
vec-shrink-panik.rs Update the minimum external LLVM to 17 2024-03-17 10:11:04 -07:00
vec-with-capacity.rs try_with_capacity for Vec, VecDeque, String 2024-03-01 18:24:02 +00:00
vecdeque_no_panic.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
vecdeque_pop_push.rs Add invariant to VecDeque::pop_* that len < cap if pop successful 2024-04-08 12:12:13 +02:00
vecdeque-drain.rs ignore/fix layout-sensitive tests 2024-08-31 23:56:45 +02:00
vecdeque-nonempty-get-no-panic.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
virtual-function-elimination-32bit.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
virtual-function-elimination.rs Use FileCheck to parameterize codegen tests over hashes 2024-06-04 01:30:51 -07:00
vtable-loads.rs Omit non-needs_drop drop_in_place in vtables 2024-05-27 16:26:56 -04:00
vtable-upcast.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
wasm_casts_trapping.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
wasm_exceptions.rs Fix wasm_exceptions test 2024-06-19 21:26:48 +01:00
zip.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
zst-offset.rs Ban non-array SIMD 2024-09-09 19:39:43 -07:00

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