Author: vedantk
Date: Mon Jun 13 19:42:12 2016
New Revision: 272604
URL: http://llvm.org/viewvc/llvm-project?rev=272604&view=rev
Log:
[docs] Coverage: Document the profile merge pool specifier
Modified:
cfe/trunk/docs/SourceBasedCodeCoverage.rst
Modified: cfe/trunk/docs/SourceBasedCodeCoverage.rst
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/SourceBasedCodeCoverage.rst?rev=272604&r1=272603&r2=272604&view=diff
==============================================================================
--- cfe/trunk/docs/SourceBasedCodeCoverage.rst (original)
+++ cfe/trunk/docs/SourceBasedCodeCoverage.rst Mon Jun 13 19:42:12 2016
@@ -78,6 +78,14 @@ directory structure will be created. Ad
* "%h" expands out to the hostname of the machine running the program.
+* "%Nm" expands out to the instrumented binary's signature. When this pattern
+ is specified, the runtime creates a pool of N raw profiles which are used for
+ on-line profile merging. The runtime takes care of selecting a raw profile
+ from the pool, locking it, and updating it before the program exits. If N is
+ not specified (i.e the pattern is "%m"), it's assumed that ``N = 1``. N must
+ be between 1 and 9. The merge pool specifier can only occur once per filename
+ pattern.
+
.. code-block:: console
# Step 2: Run the program.
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