[PATCH] Add a cc1 option called dump-coverage-mapping

[Bob Wilson]

This is OK to commit. The option description is currently:

"Dump the coverage mapping records that will be emitted in a translation unit”

How about changing that to the following?

"Dump the coverage mapping records, for testing”

There are some other “dump” options with similar descriptions, and I think it’s useful to suggest the purpose of the option.

> On Aug 5, 2014, at 4:28 PM, Alex Lorenz <arphaman at gmail.com> wrote:
> 
> Hi bob.wilson, bogner,
> 
> This patch adds a new option called 'dump-coverage-mapping'. It allows us to test coverage mapping generation without relying on llvm-cov.
> 
> http://reviews.llvm.org/D4799
> 
> Files:
>  include/clang/Driver/CC1Options.td
>  include/clang/Frontend/CodeGenOptions.def
>  lib/CodeGen/CodeGenModule.cpp
>  lib/CodeGen/CodeGenPGO.cpp
>  lib/CodeGen/CoverageMappingGen.cpp
>  lib/CodeGen/CoverageMappingGen.h
>  lib/Frontend/CompilerInvocation.cpp
> <D4799.12214.patch>