b5eb9893f4
interpret: do not force_allocate all return places A while ago I cleaned up our `PlaceTy` a little, but as a side-effect of that, return places had to always be force-allocated. That turns out to cause quite a few extra allocations, and for a project we are doing where we marry Miri with a model checker, that means a lot of extra work -- local variables are just so much easier to reason about than allocations. So, this PR brings back the ability to have the return place be just a local of the caller. To make this work cleanly I had to rework stack pop handling a bit, which also changes the output of Miri in some cases as the span for errors occurring during a particular phase of stack pop changed. With these changes, a no-std binary with a function of functions that just take and return scalar types and that uses no pointers now does not move *any* local variables into memory. :) r? `@oli-obk` |
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| .. | ||
| bootstrap | ||
| build_helper | ||
| ci | ||
| doc | ||
| etc | ||
| gcc@04ce66d8c9 | ||
| librustdoc | ||
| llvm-project@c1118fdbb3 | ||
| rustc-std-workspace | ||
| rustdoc-json-types | ||
| tools | ||
| README.md | ||
| stage0 | ||
| version | ||
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.