[PATCH] D114383: [InstrProfiling] Add -runtime-counter-relocation=function mode

Roland McGrath via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Nov 22 10:59:24 PST 2021


mcgrathr created this revision.
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The -runtime-counter-relocation switch is changed from a Boolean to a
three-way switch: none, variable, or function.  The previous
-runtime-counter-relocation=true behavior is now selected with
-runtime-counter-relocation=variable.  In the new ...=function mode,
instead of loading the global variable __llvm_profile_counter_bias,
instrumented code calls the function __llvm_profile_counter_dynamic_bias
with no arguments to return the bias.  This can be a runtime function or
it can be defined in the translation unit to be inlined.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D114383

Files:
  llvm/include/llvm/ProfileData/InstrProf.h
  llvm/include/llvm/ProfileData/InstrProfData.inc
  llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
  llvm/test/Instrumentation/InstrProfiling/runtime-counter-relocation.ll

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