[Coverage] Apply filtered paths to summary

[beanz]

Summary

The script to generate code coverage reports supports passing filter paths to llvm-cov when generating the HTML reports, but doesn't pass those paths to the summary generation as well. This results in a summary report that doesn't match the HTML report.

This patch addresses the problem by also passing the filter paths to the summary report generation.

[vsk]

Thanks!

llvm/trunk/utils/prepare-code-coverage-artifact.py

for i, binary in enumerate(binaries):
             objects.extend(('-object', binary))
     invocation = [host_llvm_cov, 'show'] + objects + ['-format', 'html',
                   '-instr-profile', profile, '-o', report_dir,
                   '-show-line-counts-or-regions', '-Xdemangler', 'c++filt',
                   '-Xdemangler', '-n'] + restricted_dirs
     subprocess.check_call(invocation)
     with open(os.path.join(report_dir, 'summary.txt'), 'wb') as Summary:
         subprocess.check_call([host_llvm_cov, 'report'] + objects +
-                               ['-instr-profile', profile], stdout=Summary)
+                               ['-instr-profile', profile] + restricted_dirs,
+                               stdout=Summary)
     print('Done!')
 
 def prepare_html_reports(host_llvm_cov, profdata_path, report_dir, binaries,
                          unified_report, restricted_dirs):
     if unified_report:
         prepare_html_report(host_llvm_cov, profdata_path, report_dir, binaries,
                             restricted_dirs)
     else: