Michael J. Spencer
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b842725c1d
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[ELF] Add profile guided section layout
This adds profile guided layout using the Call-Chain Clustering (C³) heuristic
from https://research.fb.com/wp-content/uploads/2017/01/cgo2017-hfsort-final1.pdf .
RFC: [llvm-dev] [RFC] Profile guided section layout
http://lists.llvm.org/pipermail/llvm-dev/2017-June/114178.html
Pass `--call-graph-ordering-file <file>` to read a call graph profile where each
line has the format:
<from symbol> <to symbol> <call count>
Differential Revision: https://reviews.llvm.org/D36351
llvm-svn: 330234
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2018-04-17 23:30:05 +00:00 |