Add `minicore` test auxiliary and support `//@ add-core-stubs` directive in ui/assembly/codegen tests#130693

Merged

bors merged 10 commits intorust-lang:masterfrom

jieyouxu:minicore

Oct 31, 2024

Commits on Oct 31, 2024

minicore: add minimal minicore test auxiliary
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bootstrap: pass minicore path when running compiletest step
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compiletest: localize `compile_test_and_save_assembly` to assembly test module
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compiletest: register `--minicore-path` flag and `//@ add-core-stubs` directive
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compiletest: conditionally build and provide `minicore` as extern prelude when requested via `//@ add-core-stubs` directive
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compiletest: stamp `minicore.rs` to rerun tests on changes
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tests/assembly: add `minicore` compiletest self-test
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tests/codegen: add `minicore` compiletest self-test
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tests/ui: add `minicore` compiletest self-test
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tests: use minicore in `tests/ui/abi/compatibility.rs` as an example
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