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Jakub Beránek ff146112f6
Rollup merge of #140774 - workingjubilee:should-force-frame-pointers-favor-the-target-or-cli, r=jieyouxu 
Affirm `-Cforce-frame-pointers=off` does not override

This PR exists to document that we (that is, the compiler reviewer) implicitly made a decision in rust-lang/rust#86652 that defies the expectations of some programmers. Some programmers believe `-Cforce-frame-pointers=false` should obey the programmer in all cases, forcing the compiler to avoid generating frame pointers, even if the target specification would indicate they must be generated. However, many targets rely on frame pointers for fast or sound unwinding.

T-compiler had a weekly triage meeting on 2025-05-22. This topic was put to discussion because some programmers may expect the target-overriding behavior. In that meeting we decided removing frame pointers, at least with regards to the contract of the `-Cforce-frame-pointers` option, is not required, even if `=off` is passed, and that we will not do so if the target would expect them. This follows from the documentation here: https://doc.rust-lang.org/rustc/codegen-options/index.html#force-frame-pointers

We may separately pursue trying to clarify the situation more emphatically in our documentation, or warn when people pass the option when it doesn't do anything.
2025-06-18 18:06:48 +02:00
..
asm Use explicit cpu in some asm and codegen tests. 2025-03-19 19:45:46 +01:00
autodiff Update generic tests 2025-05-21 07:24:43 +00:00
autovec tests: Revise dont-shuffle-bswaps-opt3 per tested arch 2025-06-09 23:15:44 -07:00
auxiliary Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
avr update/bless tests 2025-04-06 21:41:47 +02:00
bounds-checking Simplify the GEP instruction for index 2024-12-15 19:01:45 +08:00
cffi stabilize naked_functions 2025-04-20 11:18:38 +02:00
compiletest-self-test tests/codegen: add minicore compiletest self-test 2024-10-31 18:20:11 +08:00
cross-crate-inlining tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
debug-accessibility Explicitly register MSVC/NONMSVC revisions for some codegen tests 2024-12-19 20:36:51 +08:00
debuginfo-proc-macro Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
dllimports Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
enum Stabilise repr128 2025-05-28 15:14:34 +01:00
ergonomic-clones Add codegen test to be sure we get rid of uneeded clones after monomorphization 2025-04-07 16:53:11 -03:00
float Expose algebraic floating point intrinsics 2025-04-04 16:13:57 -07:00
hint tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
instrument-coverage coverage: Adjust a codegen test to ignore the order of covmap/covfun globals 2024-12-11 21:34:48 +11:00
instrument-xray [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
intrinsics Stabilize select_unpredictable 2025-05-01 13:49:28 +01:00
issues Describe lifetime of call argument temporaries passed indirectly 2025-05-17 09:49:03 +02:00
lib-optimizations tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
loongarch-abi tests: use minicore more 2025-02-24 09:26:54 +00:00
macos tests: use minicore more 2025-02-24 09:26:54 +00:00
meta-filecheck compiletest: don't register MSVC/NONMSVC FileCheck prefixes 2024-12-19 20:36:51 +08:00
naked-fn stabilize naked_functions 2025-04-20 11:18:38 +02:00
non-terminate Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
option-niche-unfixed tests: mark option-niche-eq as fixed on LLVM 21 2025-05-27 11:20:52 -04:00
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 tests: use //@ ignore-auxiliary with backlinked primary test file 2025-04-17 19:45:28 +08:00
repr enable msa feature for mips in codegen tests 2025-04-29 10:20:25 +02:00
riscv-abi Fix RISC-V C function ABI when passing/returning structs containing floats 2025-06-16 10:14:07 +01:00
sanitizer KCFI: Add KCFI arity indicator support 2025-04-05 04:05:04 +00:00
simd x86 (32/64): go back to passing SIMD vectors by-ptr 2025-06-04 08:38:49 +02:00
simd-intrinsic x86 (32/64): go back to passing SIMD vectors by-ptr 2025-06-04 08:38:49 +02:00
src-hash-algorithm [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
unwind-abis tests: {Meta,Pointee}Sized in non-minicore tests 2025-06-16 23:04:33 +00:00
aarch64-softfloat.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
aarch64-struct-align-128.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
abi-efiapi.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
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 tests: use minicore more 2025-02-24 09:26:54 +00:00
abi-sysv64.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
abi-win64-zst.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
abi-x86_64_sysv.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
abi-x86-interrupt.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
abi-x86-sse.rs tests: {Meta,Pointee}Sized in non-minicore tests 2025-06-16 23:04:33 +00:00
addr-of-mutate.rs LLVM changed the nocapture attribute to captures(none) 2025-01-30 11:22:46 +01:00
adjustments.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
align-byval-alignment-mismatch.rs Describe lifetime of call argument temporaries passed indirectly 2025-05-17 09:49:03 +02:00
align-byval-vector.rs use add-core-stubs / minicore for a few more tests 2025-02-16 18:37:50 +01:00
align-byval.rs use add-core-stubs / minicore for a few more tests 2025-02-16 18:37:50 +01:00
align-enum.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
align-fn.rs fix multiple #[repr(align(N))] on functions 2025-04-16 12:16:40 +02:00
align-offset.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
align-struct.rs mitigate MSVC unsoundness by not emitting alignment attributes on win32-msvc targets 2025-04-07 23:30:55 +02:00
alloc-optimisation.rs Change __rust_no_alloc_shim_is_unstable to be a function 2025-06-16 10:54:07 -07:00
amdgpu-addrspacecast.rs Cast allocas to default address space 2025-02-10 21:38:44 +01:00
array-clone.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
array-cmp.rs Extend the chaining logic to slices too 2025-04-12 22:10:17 -07:00
array-codegen.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
array-equality.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
array-repeat.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
ascii-char.rs codegen tests: Tolerate nuw nsw on trunc 2024-04-11 17:20:08 +00:00
assign-desugar-debuginfo.rs Don't produce debug information for compiler-introduced-vars when desugaring assignments. 2025-03-21 17:34:45 -07:00
async-closure-debug.rs replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
async-fn-debug-awaitee-field.rs replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
async-fn-debug-msvc.rs didn't catch this test failure, whoops 2025-04-11 09:57:21 +02:00
async-fn-debug.rs replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
atomic-operations.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
atomicptr.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
autodiffv2.rs passing test for dualv 2025-04-16 17:13:50 -04:00
autovectorize-f32x4.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
bigint-helpers.rs Override disjoint_or in the LLVM backend 2025-01-31 22:29:08 -08:00
binary-heap-peek-mut-pop-no-panic.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
binary-search-index-no-bound-check.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
bool-cmp.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
box-default-debug-copies.rs reduce Box::default stack copies in debug mode 2025-01-26 03:48:27 -05:00
box-uninit-bytes.rs Remove implicit #[no_mangle] for #[rustc_std_internal_symbol] 2025-03-17 14:08:09 +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.rs Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
call-llvm-intrinsics.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
call-tmps-lifetime.rs Describe lifetime of call argument temporaries passed indirectly 2025-05-17 09:49:03 +02:00
cast-optimized.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
cast-target-abi.rs Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
catch-unwind.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 tests: use minicore more 2025-02-24 09:26:54 +00:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
char-escape-debug-no-bounds-check.rs Add test for escape_debug without bounds check. 2025-03-06 21:38:39 +01:00
checked_ilog.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
checked_math.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
clone_as_copy.rs Remove unsound-mir-opts for simplify_aggregate_to_copy 2025-04-03 21:59:43 +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 llvm: Tolerate captures in tests 2025-02-14 18:55:50 +00:00
comparison-operators-2-struct.rs Update some comparison tests now that they pass in LLVM20 2025-02-17 16:36:14 -08:00
comparison-operators-2-tuple.rs Lower BinOp::Cmp to llvm.{s,u}cmp.* intrinsics 2025-03-06 22:29:05 +08:00
comparison-operators-newtype.rs Set signext or zeroext for integer arguments on RISC-V 2024-10-23 04:42:03 +02:00
const_scalar_pair.rs Fix tests and bless 2024-04-24 13:12:33 +01:00
const-array.rs Avoid wrapping constant allocations in packed structs when not necessary 2025-03-28 09:19:57 +00:00
const-vector.rs Rollup merge of #140457 - fneddy:fix_s390x_codegen_const_vector, r=Mark-Simulacrum 2025-05-04 18:11:48 -04:00
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 replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
dealloc-no-unwind.rs Remove implicit #[no_mangle] for #[rustc_std_internal_symbol] 2025-03-17 14:08:09 +00:00
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 Enable more tests on Windows 2025-02-03 10:39:32 -05:00
debug-compile-unit-path.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
debug-fndef-size.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 Avoid wrapping constant allocations in packed structs when not necessary 2025-03-28 09:19:57 +00:00
debuginfo-constant-locals.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
debuginfo-generic-closure-env-names.rs replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
debuginfo-inline-callsite-location.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
deduced-param-attrs.rs Unimplement unsized_locals 2025-06-13 01:16:36 +02:00
default-requires-uwtable.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
default-visibility.rs Use Default visibility for rustc-generated C symbol declarations 2024-10-11 08:43:27 +11:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
drop.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
dst-offset.rs tests: PointeeSized bounds with extern types 2025-06-16 23:04:35 +00:00
dst-vtable-align-nonzero.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
dst-vtable-size-range.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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
emscripten-catch-unwind-js-eh.rs tests: {Meta,Pointee}Sized in non-minicore tests 2025-06-16 23:04:33 +00:00
emscripten-catch-unwind-wasm-eh.rs tests: {Meta,Pointee}Sized in non-minicore tests 2025-06-16 23:04:33 +00:00
enable-lto-unit-splitting.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
error-provide.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -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 Avoid wrapping constant allocations in packed structs when not necessary 2025-03-28 09:19:57 +00:00
f128-wasm32-callconv.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
fastcall-inreg.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
fatptr.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
fewer-names.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
fixed-x18.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
float_math.rs Expose algebraic floating point intrinsics 2025-04-04 16:13:57 -07:00
fn-impl-trait-self.rs Update test directives for wasm32-wasip1 2024-03-11 09:36:35 -07:00
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 Enable more tests on Windows 2025-02-03 10:39:32 -05:00
force-unwind-tables.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
frame-pointer-cli-control.rs tests: remove define so dso_local attr does not disrupt test 2025-06-16 23:21:23 -07:00
frame-pointer.rs aarch64-linux: Default to FramePointer::NonLeaf 2025-05-17 06:42:46 +02:00
function-arguments-noopt.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
function-arguments.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
function-return.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
gdb_debug_script_load.rs remove support for the #[start] attribute 2025-01-21 06:59:15 -07:00
generic-debug.rs reenable some windows tests 2024-07-14 13:48:29 +03:00
gep-index.rs Also use gep inbounds nuw for index projections 2025-02-19 15:15:29 +01:00
gpu-kernel-abi.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
i128-wasm32-callconv.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
i128-x86-align.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
i128-x86-callconv.rs x86_win64 ABI: do not use xmm0 with softfloat ABI 2025-02-19 08:41:19 +01:00
infallible-unwrap-in-opt-z.rs replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
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 replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
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 Lower BinOp::Cmp to llvm.{s,u}cmp.* intrinsics 2025-03-06 22:29:05 +08:00
integer-overflow.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
internalize-closures.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
intrinsic-no-unnamed-attr.rs replace some #[rustc_intrinsic] usage with use of the libcore declarations 2025-04-16 14:48:20 +02:00
is_val_statically_known.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
issue-97217.rs Update the minimum external LLVM to 18 2024-09-18 13:53:31 -07:00
iter-repeat-n-trivial-drop.rs 100% safe implementation of RepeatN 2025-06-13 22:32:15 +02:00
layout-size-checks.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
lifetime_start_end.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
link_section.rs Avoid wrapping constant allocations in packed structs when not necessary 2025-03-28 09:19:57 +00:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
mainsubprogram.rs reenable some windows tests 2024-07-14 13:48:29 +03:00
match-optimized.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
match-optimizes-away.rs Don't alloca just to look at a discriminant 2025-03-12 00:56:43 -07:00
match-unoptimized.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
maybeuninit-rvo.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
mem-replace-big-type.rs We don't need NonNull::as_ptr debuginfo 2024-12-10 01:29:43 -08:00
mem-replace-simple-type.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
merge-functions.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
method-declaration.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
min-function-alignment.rs add -Zmin-function-alignment 2025-01-10 22:53:54 +01:00
mir_zst_stores.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
mir-aggregate-no-alloca.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
mir-inlined-line-numbers.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
move-before-nocapture-ref-arg.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
move-operands.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
naked-asan.rs stabilize naked_functions 2025-04-20 11:18:38 +02:00
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 tests: use minicore more 2025-02-24 09:26:54 +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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
noalias-box.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
noalias-flag.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
noalias-freeze.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
noalias-refcell.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
noalias-rwlockreadguard.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
noalias-unpin.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
optimize-attr-1.rs Implement optimize(none) attribute 2025-01-23 17:19:53 +00:00
option-as-slice.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
option-niche-eq.rs tests: mark option-niche-eq as fixed on LLVM 21 2025-05-27 11:20:52 -04:00
overaligned-constant.rs The embedded bitcode should always be prepared for LTO/ThinLTO 2025-02-23 21:23:36 +08:00
packed.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
panic-abort-windows.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
panic-in-drop-abort.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 Hide the end of ranges in pretty printing if it's also the maximum of the type 2025-03-06 10:50:23 +00:00
personality_lifetimes.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 Apply ABI attributes on return types in rustc_codegen_cranelift 2025-06-12 00:47:01 +01:00
placement-new.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
powerpc64le-struct-align-128.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
precondition-checks.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
ptr-arithmetic.rs Emit getelementptr inbounds nuw for pointer::add() 2025-02-19 11:32:32 +01:00
ptr-read-metadata.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
range_to_inclusive.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
range-attribute.rs Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
range-loop.rs Allow more top-down inlining for single-BB callees 2025-03-12 22:39:43 -07:00
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
reg-struct-return.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
regparm-inreg.rs make abi_unsupported_vector_types a hard error 2025-04-20 11:34:56 +02:00
repeat-trusted-len.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
retpoline.rs tests: Convert two handwritten minicores to add-core-stubs 2025-06-13 18:59:41 -07:00
riscv-target-abi.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
rust-abi-arch-specific-adjustment.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
s390x-simd.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
scalar-pair-bool.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
slice-as_chunks.rs Stabilize slice_as_chunks library feature 2025-04-10 21:07:09 -07:00
slice-indexing.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
slice-init.rs Add a test 2025-03-02 18:53:49 +00:00
slice-is-ascii.rs Use explicit cpu in some asm and codegen tests. 2025-03-19 19:45:46 +01:00
slice-iter-fold.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
slice-iter-len-eq-zero.rs transmute should also assume non-null pointers 2025-02-12 23:01:27 -08:00
slice-iter-nonnull.rs Simplify slice::Iter::next enough that it inlines 2025-02-14 22:24:27 -08:00
slice-last-elements-optimization.rs Add tests for LLVM 20 slice bounds check optimization 2025-03-31 22:38:53 +09:00
slice-pointer-nonnull-unwrap.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
slice-position-bounds-check.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
slice-ref-equality.rs Set both nuw and nsw in slice size calculation 2025-02-13 21:26:48 -08:00
slice-reverse.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
slice-split-at.rs slice: Remove some uses of unsafe in first/last chunk methods 2025-03-30 12:45:04 -04:00
slice-windows-no-bounds-check.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
some-abis-do-extend-params-to-32-bits.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
some-global-nonnull.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
sparc-struct-abi.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
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 tests: use minicore more 2025-02-24 09:26:54 +00:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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 tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
stores.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
string-push.rs Speed up String::push and String::insert 2025-04-09 13:06:10 +03:00
swap-large-types.rs Ensure swap_nonoverlapping is really always untyped 2025-04-09 09:09:37 -07:00
swap-small-types.rs skip tests/codegen/swap-small-types when debug assertions are on 2025-04-09 10:44:49 -07:00
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 Fix target-feature inline test to be less flaky 2025-03-06 19:56:21 +00:00
target-feature-overrides.rs tests: use minicore more 2025-02-24 09:26:54 +00:00
terminating-catchpad.rs tests: {Meta,Pointee}Sized in non-minicore tests 2025-06-16 23:04:33 +00:00
thread-local.rs rustc_codegen_llvm: use threadlocal.address intrinsic to access TLS 2025-05-29 16:07:43 +02:00
tied-features-strength.rs Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
to_vec.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
trailing_zeros.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
transmute-optimized.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
transmute-scalar.rs Emit trunc nuw for unchecked shifts and to_immediate_scalar 2025-02-19 11:36:52 -08:00
try_question_mark_nop.rs replace //@ compile-flags: --edition with //@ edition 2025-04-10 09:56:37 +02:00
tune-cpu-on-functions.rs Run rustfmt on tests/codegen/. 2024-05-31 15:56:43 +10:00
tuple-layout-opt.rs Fix test expectations for 32bit x86 2024-10-19 13:09:21 +00:00
ub-checks.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
unchecked_shifts.rs Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
unchecked-float-casts.rs [AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives 2024-02-22 16:04:04 +00:00
uninhabited-transparent-return-abi.rs tests: fix up new test for nocapture -> capture(none) change 2025-02-25 17:46:05 -05:00
uninit-consts.rs Avoid wrapping constant allocations in packed structs when not necessary 2025-03-28 09:19:57 +00:00
uninit-repeat-in-aggregate.rs Lower to a memset(undef) when Rvalue::Repeat repeats uninit 2025-03-19 23:57:49 -04:00
union-abi.rs Emit trunc nuw for unchecked shifts and to_immediate_scalar 2025-02-19 11:36:52 -08:00
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 Change __rust_no_alloc_shim_is_unstable to be a function 2025-06-16 10:54:07 -07:00
used_with_arg.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
var-names.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec_pop_push_noop.rs Update the minimum external LLVM to 19 2025-04-05 11:44:38 -07:00
vec-as-ptr.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec-calloc.rs Remove implicit #[no_mangle] for #[rustc_std_internal_symbol] 2025-03-17 14:08:09 +00:00
vec-in-place.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec-iter-collect-len.rs Change __rust_no_alloc_shim_is_unstable to be a function 2025-06-16 10:54:07 -07:00
vec-iter.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec-len-invariant.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec-optimizes-away.rs Change __rust_no_alloc_shim_is_unstable to be a function 2025-06-16 10:54:07 -07:00
vec-reserve-extend.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec-shrink-panik.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vec-with-capacity.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vecdeque_no_panic.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vecdeque_pop_push.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vecdeque-drain.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vecdeque-nonempty-get-no-panic.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
virtual-call-attrs-issue-137646.rs Don't infer unwinding of virtual calls based on the function attributes 2025-02-27 12:58:18 +08:00
virtual-function-elimination-32bit.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
virtual-function-elimination.rs Unimplement unsized_locals 2025-06-13 01:16:36 +02:00
vtable-loads.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
vtable-upcast.rs remove feature(trait_upcasting) from tests and bless them 2025-02-06 23:44:23 +01:00
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 tests/codegen/wasm_exceptions 2025-01-28 19:10:26 +03:00
zip.rs tests/codegen: use -Copt-level=3 instead of -O 2025-02-11 13:41:35 -08:00
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