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authorbors <bors@rust-lang.org>2022-03-31 10:33:56 +0000
committerbors <bors@rust-lang.org>2022-03-31 10:33:56 +0000
commitdf20355fa9fa5e9fb89be4e4bfee8a643bb7a23e (patch)
tree0524050d132dafc2ce53626125011a0287ea3699 /compiler/rustc_codegen_gcc
parente730969b0d433d66d4f1c0bbd9ff70050c274ad5 (diff)
parent2799885ed03708eea1ec372339317bd97e5c5601 (diff)
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Auto merge of #95456 - RalfJung:size, r=oli-obk
allow large Size again

This basically reverts most of https://github.com/rust-lang/rust/pull/80042, and instead does the panic in `bits()` with a `#[cold]` function to make sure it does not get inlined.

https://github.com/rust-lang/rust/pull/80042 added a comment about an invariant ("The top 3 bits are ALWAYS zero") that is not actually enforced, and if it were enforced that would be a problem for https://github.com/rust-lang/rust/pull/95388. So I think we should not have that invariant, and I adjusted the code accordingly.

r? `@oli-obk` Cc `@sivadeilra`
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