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authorbors <bors@rust-lang.org>2024-03-03 22:21:53 +0000
committerbors <bors@rust-lang.org>2024-03-03 22:21:53 +0000
commit70aa0b86c066e721012852a9851fdf8586117823 (patch)
treec0afd2826bff536699dad76abb67b176afc6abd2 /compiler/rustc_codegen_gcc/src/back/write.rs
parent516b6162a2ea8e66678c09e8243ebd83e4b8eeea (diff)
parent401651015d837ebfe55928692a84de37ec8a3a4b (diff)
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Auto merge of #121665 - erikdesjardins:ptradd, r=nikic
Always generate GEP i8 / ptradd for struct offsets

This implements #98615, and goes a bit further to remove `struct_gep` entirely.

Upstream LLVM is in the beginning stages of [migrating to `ptradd`](https://discourse.llvm.org/t/rfc-replacing-getelementptr-with-ptradd/68699). LLVM 19 will [canonicalize](https://github.com/llvm/llvm-project/pull/68882) all constant-offset GEPs to i8, which has roughly the same effect as this change.

Fixes #121719.

Split out from #121577.

r? `@nikic`
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