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tests: relax expectations after llvm change 902ddda120a5
LLVM 22 is able to drop assumes that seem to not help further optimizations, which actually seems to dramatically _help_ further optimizations in some of our small test cases.
I'm a little unclear how to fix the last failure, in `tests/codegen-llvm/issues/issue-122600-ptr-discriminant-update.rs`:
```
-; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite, inaccessiblemem: write) uwtable
+; Function Attrs: mustprogress nofree norecurse nosync nounwind nonlazybind willreturn memory(argmem: readwrite, inaccessiblemem: write) uwtable
define void ``@update(ptr`` noundef captures(none) %s) unnamed_addr #0 {
start:
- %_3.sroa.0.0.copyload = load i8, ptr %s, align 1
- %0 = trunc nuw i8 %_3.sroa.0.0.copyload to i1
- %1 = xor i1 %0, true
- tail call void ``@llvm.assume(i1`` %1)
store i8 1, ptr %s, align 1
ret void
}
```
I'm just not conversant enough in LLVM IR to follow the changes here.
``@rustbot`` label llvm-main
r? nikic
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LLVM 22 is able to drop assumes that seem to not help further
optimizations, which actually seems to dramatically _help_ further
optimizations in some of our small test cases.
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This updates tests/codegen-llvm/issues/issue-118306.rs to pass also
after https://github.com/llvm/llvm-project/pull/155415
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Add codegen-llvm regression tests
Most of these regressions deal with elimination of panics and bounds checks that were fixed upstream by LLVM.
closes https://github.com/rust-lang/rust/issues/141497
closes https://github.com/rust-lang/rust/issues/131162
closes https://github.com/rust-lang/rust/issues/129583
closes https://github.com/rust-lang/rust/issues/110971
closes https://github.com/rust-lang/rust/issues/91109
closes https://github.com/rust-lang/rust/issues/80075
closes https://github.com/rust-lang/rust/issues/74917
closes https://github.com/rust-lang/rust/issues/71997
closes https://github.com/rust-lang/rust/issues/71257
closes https://github.com/rust-lang/rust/issues/59352
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Consolidate all the panicking functions in `slice/index.rs` to use a single
`slice_index_fail` function, similar to how it is done in `str/traits.rs`.
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Most of these regressions concern elimination of panics and bounds
checks that were fixed upstream by LLVM.
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Add codegen test for issue 122734
Closes rust-lang/rust#122734
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llvm: Accept new LLVM lifetime format
In llvm/llvm-project#150248 LLVM removed the size parameter from the lifetime format. Tolerate not having that size parameter.
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LLVM removed the size parameter from the lifetime format.
Tolerate not having that size parameter.
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Add codegen test for issue where `valid_index.saturating_sub(X)` produced an
extra bounds check.
This was fixed by the LLVM upgrade.
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