Add a dummy codegen backend #146596
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Add a dummy codegen backend #146596
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This allows building a rustc capable of running the frontend without any backend present. While this may not seem all that useful, it allows running the frontend of rustc to report errors or running miri to interpret a program without any backend present. This is useful when you are trying to say run miri in the browser as upstream LLVM can't be compiled for wasm yet. Or to run rustc itself in miri like I did a while ago and caught some UB.
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This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed. Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers. |
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Add a dummy codegen backend This allows building a rustc capable of running the frontend without any backend present. While this may not seem all that useful, it allows running the frontend of rustc to report errors or running miri to interpret a program without any backend present. This is useful when you are trying to say run miri in the browser as upstream LLVM can't be compiled for wasm yet. Or to run rustc itself in miri like I did a while ago and caught some UB.
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Rollup of 4 pull requests Successful merges: - #146518 (Improve the documentation around `ZERO_AR_DATE`) - #146596 (Add a dummy codegen backend) - #146617 (Don’t suggest foreign `doc(hidden)` types in "the following other types implement trait" diagnostics) - #146635 (cg_llvm: Stop using `as_c_char_ptr` for coverage-related bindings) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 6 pull requests Successful merges: - #143069 (Add fast-path for accessing the current thread id) - #146518 (Improve the documentation around `ZERO_AR_DATE`) - #146596 (Add a dummy codegen backend) - #146617 (Don’t suggest foreign `doc(hidden)` types in "the following other types implement trait" diagnostics) - #146635 (cg_llvm: Stop using `as_c_char_ptr` for coverage-related bindings) - #147184 (Fix the bevy implied bounds hack for the next solver) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 6 pull requests Successful merges: - #143069 (Add fast-path for accessing the current thread id) - #146518 (Improve the documentation around `ZERO_AR_DATE`) - #146596 (Add a dummy codegen backend) - #146617 (Don’t suggest foreign `doc(hidden)` types in "the following other types implement trait" diagnostics) - #146635 (cg_llvm: Stop using `as_c_char_ptr` for coverage-related bindings) - #147184 (Fix the bevy implied bounds hack for the next solver) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of #146596 - bjorn3:dummy_backend, r=SparrowLii Add a dummy codegen backend This allows building a rustc capable of running the frontend without any backend present. While this may not seem all that useful, it allows running the frontend of rustc to report errors or running miri to interpret a program without any backend present. This is useful when you are trying to say run miri in the browser as upstream LLVM can't be compiled for wasm yet. Or to run rustc itself in miri like I did a while ago and caught some UB.
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This allows building a rustc capable of running the frontend without any backend present. While this may not seem all that useful, it allows running the frontend of rustc to report errors or running miri to interpret a program without any backend present. This is useful when you are trying to say run miri in the browser as upstream LLVM can't be compiled for wasm yet. Or to run rustc itself in miri like I did a while ago and caught some UB.