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authorbors <bors@rust-lang.org>2025-01-21 09:45:24 +0000
committerbors <bors@rust-lang.org>2025-01-21 09:45:24 +0000
commita7a6c64a657f68113301c2ffe0745b49a16442d1 (patch)
treee040f9fb970dd0d77b98a2fa299e71df38b37ef7 /compiler/rustc_codegen_gcc/tests/run/abort2.rs
parentebbe63891f1fae21734cb97f2f863b08b1d44bf8 (diff)
parent8f5f5e56a8edbe3a231441f6051fb7dc4ed8e193 (diff)
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Auto merge of #135335 - oli-obk:push-zxwssomxxtnq, r=saethlin
codegen: store ScalarPair via memset when one side is undef and the other side can be memset

Basically since `undef` can be any byte, it can also be the byte(s) that are in the non-undef parts of a value. So we can just treat the `undef` at not being there and only look at the initialized bytes and memset over them

fixes #104290

based on https://github.com/rust-lang/rust/pull/135258
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