Update dependency: llvm-backend/src/main/native/llvm-backend #3728
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…de2d5a7ce869723967fe89d4fc
Baltoli
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Oct 18, 2023
rv-jenkins
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Oct 19, 2023
This PR is a hotfix for a [broken](runtimeverification/k#3728) backend update job. When using the new [inlined version of `llvm-kompile`](#814), we were incorrectly using the result of `sys::getDefaultTargetTriple()` as our target for machine code emission, rather than the consistent value selected by running Clang on an empty input file. On newer versions of macOS, this produces warnings like: ``` ld: warning: object file (tmp.1YutNb2k5B.o) was built for newer macOS version (14.0) than being linked (10.12) ``` when running `llvm-kompile`. These warnings were silently absorbed by CI as they are just warnings, but they are a) noisy and b) break the K test suite when grepping for error messages in failed compilations (`kompile ... 2>&1 | grep ...`). The fix is just to use our existing technique for target triple selection in the one place we weren't previously. Additionally, the PR makes two small related changes: * Add conditional compilation guards for some LLVM headers that give deprecation warnings in LLVM 17 * Catch future errors of this kind in the backend CI by ensuring that `llvm-kompile` is silent and doesn't pollute `stderr` with extra output when it runs successfully
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October 19, 2023 10:30
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