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Author SHA1 Message Date
Alex Lorenz 1193b5e272 Coverage: add HasCodeBefore flag to a mapping region. 
This flag will be used by the coverage tool to help 
compute the execution counts for each line in a source file.

Differential Revision: http://reviews.llvm.org/D4746

llvm-svn: 214740
 2014-08-04 18:00:51 +00:00
Alex Lorenz b2ebf2a08b coverage: remove empty mapping regions 
This patch removes the empty coverage mapping regions.
Those regions were produced by clang's old mapping region generation 
algorithm, but the new algorithm doesn't generate them.

llvm-svn: 213981
 2014-07-25 22:22:24 +00:00
Alex Lorenz a20a5d50ba Add code coverage mapping data, reader, and writer. 
This patch implements the data structures, the reader and
the writers for the new code coverage mapping system. 
The new code coverage mapping system uses the instrumentation
based profiling to provide code coverage analysis.

llvm-svn: 213910
 2014-07-24 23:57:54 +00:00