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Create undef reference to profile hook symbol

Authored by davidxl on Oct 26 2015, 10:15 PM.

Description

Create undef reference to profile hook symbol

Create undef reference to profile hook symbol when
PGO instrumentation is turned on. This allows
LLVM to omit emission of hook variable use method
for every single module instrumented.

llvm-svn: 251385

Details

Committed
davidxlOct 26 2015, 10:15 PM
Parents
rGb61e14e5962a: Be more conservative about diagnosing "incorrect" uses of __weak: allow them to…
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