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1230dca7423c49ff1897278030d545402ab1537b
third_party_rust_rust/tests/codegen
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Nilstrieb 1230dca742 Put noundef on all scalars that don't allow uninit 
Previously, it was only put on scalars with range validity invariants
like bool, was uninit was obviously invalid for those.

Since then, we have normatively declared all uninit primitives to be
undefined behavior and can therefore put `noundef` on them.

The remaining concern was the `mem::uninitialized` function, which cause
quite a lot of UB in the older parts of the ecosystem. This function now
doesn't return uninit values anymore, making users of it safe from this
change.

The only real sources of UB where people could encounter uninit
primitives are `MaybeUninit::uninit().assume_init()`, which has always
be clear in the docs about being UB and from heap allocations (like
reading from the spare capacity of a vec. This is hopefully rare enough
to not break anything.
2023-01-17 08:14:35 +01:00
..
auxiliary
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
avr
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
dllimports
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
intrinsics
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
non-terminate
Move /src/test to /tests
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remap_path_prefix
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
riscv-abi
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
simd-intrinsic
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
src-hash-algorithm
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
unwind-abis
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
abi-efiapi.rs
Stabilize abi_efiapi feature
2023-01-11 20:42:13 -05:00
abi-main-signature-16bit-c-int.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
abi-main-signature-32bit-c-int.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
abi-repr-ext.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
abi-sysv64.rs
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
abi-x86_64_sysv.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
abi-x86-interrupt.rs
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
adjustments.rs
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
align-enum.rs
Move /src/test to /tests
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align-fn.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
align-struct.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
alloc-optimisation.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
array-clone.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
array-equality.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
asm-clobber_abi.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
asm-clobbers.rs
Move /src/test to /tests
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asm-may_unwind.rs
Move /src/test to /tests
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asm-multiple-options.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
asm-options.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
asm-powerpc-clobbers.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
asm-sanitize-llvm.rs
Move /src/test to /tests
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asm-target-clobbers.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
async-fn-debug-awaitee-field.rs
Move /src/test to /tests
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async-fn-debug-msvc.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
async-fn-debug.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
atomic-operations.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
autovectorize-f32x4.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
binary-search-index-no-bound-check.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
bool-cmp.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
box-maybe-uninit-llvm14.rs
Put noundef on all scalars that don't allow uninit
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box-maybe-uninit.rs
Put noundef on all scalars that don't allow uninit
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bpf-alu32.rs
Move /src/test to /tests
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branch-protection.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
c-variadic-copy.rs
Move /src/test to /tests
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c-variadic-opt.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
c-variadic.rs
Put noundef on all scalars that don't allow uninit
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call-llvm-intrinsics.rs
Put noundef on all scalars that don't allow uninit
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call-metadata.rs
Move /src/test to /tests
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catch-unwind.rs
Move /src/test to /tests
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cdylib-external-inline-fns.rs
Move /src/test to /tests
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cf-protection.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
cfguard-checks.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
cfguard-disabled.rs
Move /src/test to /tests
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cfguard-nochecks.rs
Move /src/test to /tests
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cfguard-non-msvc.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
codemodels.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
coercions.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
cold-call-declare-and-call.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
comparison-operators-newtype.rs
Put noundef on all scalars that don't allow uninit
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consts.rs
Move /src/test to /tests
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dealloc-no-unwind.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
debug-alignment.rs
Move /src/test to /tests
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debug-column-msvc.rs
Move /src/test to /tests
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debug-column.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
debug-compile-unit-path.rs
Move /src/test to /tests
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debug-linkage-name.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
debug-vtable.rs
Move /src/test to /tests
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debuginfo-generic-closure-env-names.rs
Move /src/test to /tests
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deduced-param-attrs.rs
Move /src/test to /tests
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default-requires-uwtable.rs
Move /src/test to /tests
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drop.rs
Move /src/test to /tests
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dst-vtable-align-nonzero.rs
Move /src/test to /tests
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dst-vtable-size-range.rs
Move /src/test to /tests
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enum-bounds-check-derived-idx.rs
Move /src/test to /tests
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enum-bounds-check-issue-13926.rs
Move /src/test to /tests
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enum-bounds-check-issue-82871.rs
Move /src/test to /tests
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enum-bounds-check.rs
Move /src/test to /tests
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enum-debug-clike.rs
Move /src/test to /tests
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enum-debug-niche-2.rs
Move /src/test to /tests
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enum-debug-niche.rs
Move /src/test to /tests
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enum-debug-tagged.rs
Move /src/test to /tests
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enum-discriminant-value.rs
Move /src/test to /tests
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enum-match.rs
Put noundef on all scalars that don't allow uninit
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export-no-mangle.rs
Move /src/test to /tests
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external-no-mangle-fns.rs
Move /src/test to /tests
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external-no-mangle-statics.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
fastcall-inreg.rs
Put noundef on all scalars that don't allow uninit
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fatptr.rs
Move /src/test to /tests
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fewer-names.rs
Put noundef on all scalars that don't allow uninit
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ffi-const.rs
Move /src/test to /tests
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ffi-out-of-bounds-loads.rs
Move /src/test to /tests
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ffi-pure.rs
Move /src/test to /tests
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ffi-returns-twice.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
float_math.rs
Move /src/test to /tests
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fn-impl-trait-self.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
foo.s
Move /src/test to /tests
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force-frame-pointers.rs
Move /src/test to /tests
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force-no-unwind-tables.rs
Move /src/test to /tests
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force-unwind-tables.rs
Move /src/test to /tests
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frame-pointer.rs
Put noundef on all scalars that don't allow uninit
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function-arguments-noopt.rs
Move /src/test to /tests
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function-arguments.rs
Put noundef on all scalars that don't allow uninit
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gdb_debug_script_load.rs
Move /src/test to /tests
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generator-debug-msvc.rs
Move /src/test to /tests
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generator-debug.rs
Move /src/test to /tests
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generic-debug.rs
Move /src/test to /tests
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global_asm_include.rs
Move /src/test to /tests
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global_asm_x2.rs
Move /src/test to /tests
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global_asm.rs
Move /src/test to /tests
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i686-macosx-deployment-target.rs
Move /src/test to /tests
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i686-no-macosx-deployment-target.rs
Move /src/test to /tests
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inline-always-works-always.rs
Move /src/test to /tests
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inline-debuginfo.rs
Move /src/test to /tests
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inline-hint.rs
Move /src/test to /tests
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instrument-coverage.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
instrument-mcount.rs
Move /src/test to /tests
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integer-cmp.rs
Move /src/test to /tests
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integer-overflow.rs
Move /src/test to /tests
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internalize-closures.rs
Move /src/test to /tests
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intrinsic-no-unnamed-attr.rs
Move /src/test to /tests
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issue-13018.rs
Move /src/test to /tests
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issue-15953.rs
Move /src/test to /tests
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issue-27130.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-32031.rs
Put noundef on all scalars that don't allow uninit
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issue-32364.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-34634.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-34947-pow-i32.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-37945.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-44056-macos-tls-align.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-45222.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-45466.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-45964-bounds-check-slice-pos.rs
replace manual ptr arithmetic with ptr_sub
2023-01-15 17:38:05 +01:00
issue-47278.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-47442.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-56267-2.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-56267.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-56927.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-58881.rs
Put noundef on all scalars that don't allow uninit
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issue-59352.rs
Move /src/test to /tests
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issue-69101-bounds-check.rs
Move /src/test to /tests
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issue-73031.rs
Move /src/test to /tests
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issue-73338-effecient-cmp.rs
Move /src/test to /tests
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issue-73396-bounds-check-after-position.rs
Move /src/test to /tests
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issue-73827-bounds-check-index-in-subexpr.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-75525-bounds-checks.rs
Move /src/test to /tests
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issue-75546.rs
Move /src/test to /tests
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issue-75659.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-77812.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-81408-dllimport-thinlto-windows.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-84268.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-85872-multiple-reverse.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-86106.rs
Move /src/test to /tests
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issue-96274.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-96497-slice-size-nowrap.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-98156-const-arg-temp-lifetime.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-98294-get-mut-copy-from-slice-opt.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-103285-ptr-addr-overflow-check.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-103840.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
issue-105386-ub-in-debuginfo.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
iter-repeat-n-trivial-drop.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
layout-size-checks.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
lifetime_start_end.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
link_section.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
link-dead-code.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
loads.rs
Put noundef on all scalars that don't allow uninit
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local-generics-in-exe-internalized.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
lto-removes-invokes.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
mainsubprogram.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
mainsubprogramstart.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
match-optimized.rs
Change src/test to tests in source files, fix tidy and tests
2023-01-11 09:32:13 +00:00
match-optimizes-away.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
match-unoptimized.rs
Change src/test to tests in source files, fix tidy and tests
2023-01-11 09:32:13 +00:00
mem-replace-direct-memcpy.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
merge-functions.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
mir_zst_stores.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
mir-inlined-line-numbers.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
move-operands.rs
Add a regression test for argument copies with DestinationPropagation
2023-01-11 10:27:06 -05:00
naked-functions.rs
Put noundef on all scalars that don't allow uninit
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naked-nocoverage.rs
Move /src/test to /tests
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naked-noinline.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
no-assumes-on-casts.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
no-dllimport-w-cross-lang-lto.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
no-jump-tables.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
no-plt.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noalias-box-off.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noalias-box.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noalias-flag.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noalias-refcell.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noalias-rwlockreadguard.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noalias-unpin.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noreturn-uninhabited.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
noreturnflag.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
nounwind.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
nrvo.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
optimize-attr-1.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
option-nonzero-eq.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
packed.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
panic-abort-windows.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
panic-in-drop-abort.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
panic-unwind-default-uwtable.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
personality_lifetimes.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
pgo-counter-bias.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
pgo-instrumentation.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
pic-relocation-model.rs
Put noundef on all scalars that don't allow uninit
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pie-relocation-model.rs
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
README.md
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
refs.rs
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +01:00
repeat-trusted-len.rs
Move /src/test to /tests
2023-01-11 09:32:08 +00:00
repr-transparent-aggregates-1.rs
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repr-transparent-aggregates-2.rs
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repr-transparent-aggregates-3.rs
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2023-01-11 09:32:08 +00:00
repr-transparent-sysv64.rs
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2023-01-11 09:32:08 +00:00
repr-transparent.rs
Put noundef on all scalars that don't allow uninit
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sanitizer_memtag_attr_check.rs
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2023-01-11 09:32:08 +00:00
sanitizer_scs_attr_check.rs
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2023-01-11 09:32:08 +00:00
sanitizer-cfi-add-canonical-jump-tables-flag.rs
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sanitizer-cfi-emit-type-checks.rs
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sanitizer-cfi-emit-type-metadata-id-itanium-cxx-abi.rs
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sanitizer-cfi-emit-type-metadata-itanium-cxx-abi.rs
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sanitizer-kcfi-add-kcfi-flag.rs
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2023-01-11 09:32:08 +00:00
sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi.rs
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sanitizer-memory-track-orgins.rs
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sanitizer-no-sanitize-inlining.rs
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sanitizer-no-sanitize.rs
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sanitizer-recover.rs
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scalar-pair-bool.rs
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set-discriminant-invalid.rs
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simd_arith_offset.rs
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simd-wide-sum.rs
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slice_as_from_ptr_range.rs
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slice-as_chunks.rs
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slice-init.rs
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slice-iter-len-eq-zero.rs
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slice-position-bounds-check.rs
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slice-ref-equality.rs
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slice-reverse.rs
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slice-windows-no-bounds-check.rs
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2023-01-11 09:32:08 +00:00
some-abis-do-extend-params-to-32-bits.rs
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some-global-nonnull.rs
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2023-01-11 09:32:08 +00:00
sparc-struct-abi.rs
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2023-01-11 09:32:08 +00:00
sse42-implies-crc32.rs
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stack-probes-call.rs
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stack-probes-inline.rs
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stack-protector.rs
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2023-01-11 09:32:08 +00:00
static-relocation-model-msvc.rs
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2023-01-11 09:32:08 +00:00
staticlib-external-inline-fns.rs
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2023-01-11 09:32:08 +00:00
stores.rs
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2023-01-11 09:32:08 +00:00
swap-large-types.rs
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2023-01-11 09:32:08 +00:00
swap-simd-types.rs
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2023-01-11 09:32:08 +00:00
swap-small-types.rs
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2023-01-11 09:32:08 +00:00
target-cpu-on-functions.rs
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2023-01-11 09:32:08 +00:00
target-feature-overrides.rs
Change src/test to tests in source files, fix tidy and tests
2023-01-11 09:32:13 +00:00
thread-local.rs
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2023-01-11 09:32:08 +00:00
to_vec.rs
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2023-01-11 09:32:08 +00:00
transmute-scalar.rs
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2023-01-17 08:14:35 +01:00
try_identity.rs
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2023-01-11 09:32:08 +00:00
try_question_mark_nop.rs
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2023-01-11 09:32:08 +00:00
tune-cpu-on-functions.rs
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2023-01-11 09:32:08 +00:00
tuple-layout-opt.rs
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2023-01-17 08:14:35 +01:00
unchecked_shifts.rs
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unchecked-float-casts.rs
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uninit-consts.rs
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union-abi.rs
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unpadded-simd.rs
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unwind-and-panic-abort.rs
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unwind-extern-exports.rs
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unwind-extern-imports.rs
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used_with_arg.rs
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var-names.rs
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vec-calloc-llvm14.rs
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2023-01-11 09:32:08 +00:00
vec-calloc.rs
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vec-in-place.rs
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vec-iter-collect-len.rs
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2023-01-11 09:32:08 +00:00
vec-optimizes-away.rs
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2023-01-11 09:32:08 +00:00
vec-shrink-panik.rs
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2023-01-11 09:32:08 +00:00
vecdeque_no_panic.rs
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2023-01-11 09:32:08 +00:00
virtual-function-elimination-32bit.rs
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2023-01-11 09:32:08 +00:00
virtual-function-elimination.rs
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2023-01-11 09:32:08 +00:00
wasm_casts_trapping.rs
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2023-01-11 09:32:08 +00:00
x86_64-macosx-deployment-target.rs
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2023-01-11 09:32:08 +00:00
x86_64-no-macosx-deployment-target.rs
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2023-01-11 09:32:08 +00:00
zip.rs
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2023-01-11 09:32:08 +00:00
zst-offset.rs
Put noundef on all scalars that don't allow uninit
2023-01-17 08:14:35 +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
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