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Auto merge of #105582 - saethlin:instcombine-assert-inhabited, r=cjgillot

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InstCombine away intrinsic validity assertions

This optimization (currently) fires 246 times on the standard library. It seems to fire hardly at all on the big crates in the benchmark suite. Interesting.
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bors 2023-01-26 03:10:52 +00:00
commit 885bf62887
12 changed files with 276 additions and 16 deletions
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8
compiler/rustc_middle/src/query/mod.rs
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@ -2116,12 +2116,12 @@ rustc_queries! {
separate_provide_extern
}
query permits_uninit_init(key: TyAndLayout<'tcx>) -> bool {
desc { "checking to see if `{}` permits being left uninit", key.ty }
query permits_uninit_init(key: ty::ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool {
desc { "checking to see if `{}` permits being left uninit", key.value.ty }
}
query permits_zero_init(key: TyAndLayout<'tcx>) -> bool {
desc { "checking to see if `{}` permits being left zeroed", key.ty }
query permits_zero_init(key: ty::ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool {
desc { "checking to see if `{}` permits being left zeroed", key.value.ty }
}
query compare_impl_const(