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Using ThinLTO because it's a good compromise between performance and
compilation speed.
Activating it for both profile generation and profile usage, doing it
only for profile usage leads to a lot of mismatch, aka
function control flow change detected (hash mismatch)
which leads to profile information not beoing used.
This requires using the whole llvm toolchain (lld, llvm-ar, llvm-ranlib)
from the same revision.
This is disabled on Windows where it causes link error on the LLVM
Plugin system.
Differential Revision: https://phabricator.services.mozilla.com/D162371
7 lines
145 B
JSON
7 lines
145 B
JSON
{
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"stages": "3",
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"pgo": true,
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"ranlib": "{MOZ_FETCHES_DIR}/clang/bin/llvm-ranlib",
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"ar": "{MOZ_FETCHES_DIR}/clang/bin/llvm-ar"
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}
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