[NFC][SpecialCaseList] Add SpecialCaseList Benchmark

[vitalybuka]

At the moment it's focused on "src:" patterns.

[fmayer]

Please specify what this change does exactly? It seems to modify an existing benchmark, but the title makes it sound like it adds a new one

[fmayer]

Please specify what this change does exactly? It seems to modify an existing benchmark, but the title makes it sound like it adds a new one

Nevermind. GitHub showed me the wrong diff when opening this PR from the email.

[llvm-ci]

LLVM Buildbot has detected a new failure on builder openmp-s390x-linux running on systemz-1 while building llvm at step 6 "test-openmp".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/88/builds/17072

Here is the relevant piece of the build log for the reference

Step 6 (test-openmp) failure: 1200 seconds without output running [b'ninja', b'-j 4', b'check-openmp'], attempting to kill
...
PASS: ompd-test :: openmp_examples/example_3.c (452 of 462)
PASS: ompd-test :: openmp_examples/example_4.c (453 of 462)
PASS: ompd-test :: openmp_examples/example_task.c (454 of 462)
PASS: ompd-test :: openmp_examples/example_5.c (455 of 462)
UNSUPPORTED: ompd-test :: openmp_examples/ompd_bt.c (456 of 462)
PASS: ompd-test :: openmp_examples/fibonacci.c (457 of 462)
UNSUPPORTED: ompd-test :: openmp_examples/ompd_parallel.c (458 of 462)
PASS: ompd-test :: openmp_examples/parallel.c (459 of 462)
PASS: ompd-test :: openmp_examples/nested.c (460 of 462)
PASS: ompd-test :: openmp_examples/ompd_icvs.c (461 of 462)
command timed out: 1200 seconds without output running [b'ninja', b'-j 4', b'check-openmp'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1335.357583

[llvm-ci]

LLVM Buildbot has detected a new failure on builder ppc64le-lld-multistage-test running on ppc64le-lld-multistage-test while building llvm at step 12 "build-stage2-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/168/builds/16629

Here is the relevant piece of the build log for the reference

Step 12 (build-stage2-unified-tree) failure: build (failure) (timed out)
...
1439.174 [58/9/6677] Linking CXX executable bin/llvm-split
1439.276 [58/8/6678] Linking CXX executable bin/llc
1439.449 [58/7/6679] Linking CXX executable unittests/Target/TargetMachineCTests
1439.761 [58/6/6680] Linking CXX executable bin/clang-nvlink-wrapper
1439.828 [58/5/6681] Linking CXX executable unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
1440.570 [58/4/6682] Linking CXX executable bin/clang-sycl-linker
1441.320 [58/3/6683] Linking CXX executable bin/llvm-reduce
1443.419 [58/2/6684] Linking CXX executable bin/bugpoint
1466.933 [57/2/6685] Building CXX object tools/bugpoint-passes/CMakeFiles/BugpointPasses.dir/TestPasses.cpp.o
1468.990 [56/2/6686] Linking CXX shared module lib/BugpointPasses.so
command timed out: 1200 seconds without output running [b'ninja'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2669.766344