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This change will fix the issue from
https://github.com/japaric/svd2rust/pull/130
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This still does not work on 32-bit archs because of an LLVM limitation,
but this is only an optimization, so let's push it on 64-bit only for now.
Fixes #37945
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This PR is an implementation of [RFC 1974] which specifies a new method of
defining a global allocator for a program. This obsoletes the old
`#![allocator]` attribute and also removes support for it.
[RFC 1974]: https://github.com/rust-lang/rfcs/pull/197
The new `#[global_allocator]` attribute solves many issues encountered with the
`#![allocator]` attribute such as composition and restrictions on the crate
graph itself. The compiler now has much more control over the ABI of the
allocator and how it's implemented, allowing much more freedom in terms of how
this feature is implemented.
cc #27389
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Fixes #42893.
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Fixes #40883.
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So ARM had quite a few codegen bugs on LLVM 4.0 which are fixed on LLVM
trunk. This backports 5 of them:
r297871 - ARM: avoid clobbering register in v6 jump-table expansion.
- fixes rust-lang/rust#42248
r294949 - [Thumb-1] TBB generation: spot redefinitions of index
r295816 - [ARM] Fix constant islands pass.
r300870 - [Thumb-1] Fix corner cases for compressed jump tables
r302650 - [IfConversion] Add missing check in
IfConversion/canFallThroughTo
- unblocks rust-lang/rust#39409
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Includes https://github.com/rust-lang/llvm/pull/80
Includes https://github.com/rust-lang/llvm/pull/79
Also adds tests and thus fixes #24194
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This change will allow rust code to have proper support for division
and multiplication using libgcc libcalls.
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The bug was reported by @akovaski here:
https://github.com/rust-embedded/rfcs/issues/20#issuecomment-296482148
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Fixes #40593.
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pick up a fix to LLVM PR29151.
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