Add option to pass a custom codegen backend from a driver #76474
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FWIW, I had not realized how hard it is to write a stub codegen backend that does nothing, so using this in Miri will be tricky -- this is just the first step. But it seems like a reasonable first step to me anyway. Not sure who would be a good reviewer though... I'll bring this up on Zulip. |
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…li-obk Add option to pass a custom codegen backend from a driver This allows the driver to pass information to the codegen backend. For example the headcrab debugger may in the future want to use cg_clif to JIT code to be injected in the debuggee. This would PR make it possible to tell cg_clif which symbol can be found at which address and to tell it to inject the JITed code into the right process. This PR may also help with rust-lang/miri#1540 by allowing miri to provide a codegen backend that only emits metadata and doesn't perform any codegen. cc @nbaksalyar (headcrab) cc @RalfJung (miri)
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…li-obk Add option to pass a custom codegen backend from a driver This allows the driver to pass information to the codegen backend. For example the headcrab debugger may in the future want to use cg_clif to JIT code to be injected in the debuggee. This would PR make it possible to tell cg_clif which symbol can be found at which address and to tell it to inject the JITed code into the right process. This PR may also help with rust-lang/miri#1540 by allowing miri to provide a codegen backend that only emits metadata and doesn't perform any codegen. cc @nbaksalyar (headcrab) cc @RalfJung (miri)
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Rollup of 7 pull requests Successful merges: - rust-lang#76454 (UI to unit test for those using Cell/RefCell/UnsafeCell) - rust-lang#76474 (Add option to pass a custom codegen backend from a driver) - rust-lang#76711 (diag: improve closure/generic parameter mismatch) - rust-lang#77170 (Remove `#[rustc_allow_const_fn_ptr]` and add `#![feature(const_fn_fn_ptr_basics)]`) - rust-lang#77194 (Add doc alias for iterator fold) - rust-lang#77288 (fix building libstd for Miri on macOS) - rust-lang#77295 (Update unstable-book: Fix ABNF in inline assembly docs) Failed merges: r? `@ghost`
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…li-obk Add option to pass a custom codegen backend from a driver This allows the driver to pass information to the codegen backend. For example the headcrab debugger may in the future want to use cg_clif to JIT code to be injected in the debuggee. This would PR make it possible to tell cg_clif which symbol can be found at which address and to tell it to inject the JITed code into the right process. This PR may also help with rust-lang/miri#1540 by allowing miri to provide a codegen backend that only emits metadata and doesn't perform any codegen. cc @nbaksalyar (headcrab) cc @RalfJung (miri)
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This allows the driver to pass information to the codegen backend. For example the headcrab debugger may in the future want to use cg_clif to JIT code to be injected in the debuggee. This would PR make it possible to tell cg_clif which symbol can be found at which address and to tell it to inject the JITed code into the right process.
This PR may also help with rust-lang/miri#1540 by allowing miri to provide a codegen backend that only emits metadata and doesn't perform any codegen.
cc @nbaksalyar (headcrab)
cc @RalfJung (miri)