[llvm-dev] LLVM development trunk - code coverage - branch coverage missing

[Ravi David via llvm-dev]

Hi Eli , Vedant ,

>> lcov has support for something it calls "branch coverage", but it's buggy; when I tried to generate a report with it enabled, it hung.

Thanks for your reply.

Even I observed the same behavior with Lcov.

Vedant pointed out that "region coverage metric in the coverage summary"  will have some info related to branch coverage.

I am planning to explore it , I will get back with details.

--Ravi


From: Friedman, Eli [mailto:efriedma at codeaurora.org]
Sent: Thursday, August 24, 2017 12:53 PM
To: Ravi David <ravid at cadence.com>; llvm-dev at lists.llvm.org
Cc: Vedant Kumar <vsk at apple.com>
Subject: Re: [llvm-dev] LLVM development trunk - code coverage - branch coverage missing

EXTERNAL MAIL
On 8/23/2017 10:45 AM, Ravi David via llvm-dev wrote:
Hi ,

I could see the LLVM code coverage  info at the below links

http://lab.llvm.org:8080/coverage/coverage-reports/clang/index.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__lab.llvm.org-3A8080_coverage_coverage-2Dreports_clang_index.html&d=DwMD-g&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=w9rElxRZGeoeI21evGmBSS161LhkODfIGd4A80DWDwg&m=RA6NGBJp_7Wnt4YDyFQ14ECnCDnI9U48TEoZa5JdTWY&s=F68Ai9A6BaLmq5nLqFueBvo3fUZbUAlcUN7KM5nRFoY&e=>
http://llvm.org/reports/coverage/<https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_reports_coverage_&d=DwMD-g&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=w9rElxRZGeoeI21evGmBSS161LhkODfIGd4A80DWDwg&m=RA6NGBJp_7Wnt4YDyFQ14ECnCDnI9U48TEoZa5JdTWY&s=Uc_zrubiOOQikDlJjbvEkeV510qf7OG2LukJKDkfxIg&e=>

I am interested in the branch coverage metric.  I could not find the branch coverage related info .


http://llvm.org/reports/coverage/<https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_reports_coverage_&d=DwMD-g&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=w9rElxRZGeoeI21evGmBSS161LhkODfIGd4A80DWDwg&m=RA6NGBJp_7Wnt4YDyFQ14ECnCDnI9U48TEoZa5JdTWY&s=Uc_zrubiOOQikDlJjbvEkeV510qf7OG2LukJKDkfxIg&e=> is generated using lcov (on top of LLVM's gcov emulation, I think?).  lcov has support for something it calls "branch coverage", but it's buggy; when I tried to generate a report with it enabled, it hung.

http://lab.llvm.org:8080/coverage/coverage-reports/clang/index.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__lab.llvm.org-3A8080_coverage_coverage-2Dreports_clang_index.html&d=DwMD-g&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=w9rElxRZGeoeI21evGmBSS161LhkODfIGd4A80DWDwg&m=RA6NGBJp_7Wnt4YDyFQ14ECnCDnI9U48TEoZa5JdTWY&s=F68Ai9A6BaLmq5nLqFueBvo3fUZbUAlcUN7KM5nRFoY&e=> is generated using LLVM source-based code coverage (https://clang.llvm.org/docs/SourceBasedCodeCoverage.html<https://urldefense.proofpoint.com/v2/url?u=https-3A__clang.llvm.org_docs_SourceBasedCodeCoverage.html&d=DwMD-g&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=w9rElxRZGeoeI21evGmBSS161LhkODfIGd4A80DWDwg&m=RA6NGBJp_7Wnt4YDyFQ14ECnCDnI9U48TEoZa5JdTWY&s=rH8lu7sallfzpVngYduSm-LRr5oWE4nLpN-eLKkJXWA&e=>).  Currently, it doesn't have any support for decision coverage.

-Eli


--

Employee of Qualcomm Innovation Center, Inc.

Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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