compiletest: inject LLVM_PROFILE_FILE when COMPILETEST_LLVM_PROFILE_DIR is set#155117
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Ayuse wants to merge 1 commit intorust-lang:mainfrom
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compiletest: inject LLVM_PROFILE_FILE when COMPILETEST_LLVM_PROFILE_DIR is set#155117Ayuse wants to merge 1 commit intorust-lang:mainfrom
Ayuse wants to merge 1 commit intorust-lang:mainfrom
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Some changes occurred in src/tools/compiletest cc @jieyouxu |
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When
COMPILETEST_LLVM_PROFILE_DIRis set, compiletest now forwardLLVM_PROFILE_FILEto eachrustcinvocation so it writes a per-process.profrawfile to that directory. The%pin the filename ensures concurrent rustc processes don't collide.This is fully opt-in — normal test runs are unaffected.
Useful for collecting compiler coverage data across the full test suite.
r? @jackh726