[llvm-dev] make check error for remove-global-vars.ll

raghesh via llvm-dev llvm-dev at lists.llvm.org
Wed Aug 21 01:12:40 PDT 2019

Hi All,

The 'make check -j' command fails occasionally for the testcase
which is added in a recent commit.

We suspect this is because of a race condition occurring due to the
simultaneous read of the file reduce.ll by FileCheck (when make check -j is
used), which is generated by llvm-reduce. The file reduce.ll is both
consumed by the testcases remove-global-vars.ll and remove-funcs.ll, which when
executed in parallel, one of them might read the wrong reduce.ll generated
by the other.

Could someone confirm this indeed is the case?

Raghesh Aloor
Sr. Software Engineer
AMD India Pvt. Ltd.
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