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8f223c891e
Until now, when a path in a gcno file included a directory, we would emit our .gcov file in that directory, whereas gcov always emits the file in the current directory. In doing so, this implements gcov's strange name-mangling -p flag, which is needed to avoid clobbering files when two with the same name exist in different directories. The path mangling is a bit ugly and only handles unix-like paths, but it's simple, and it doesn't make any guesses as to how it should behave outside of what gcov documents. If we decide this should be cross platform later, we can consider the compatibility implications then. llvm-svn: 200754
85 lines
3.1 KiB
Plaintext
85 lines
3.1 KiB
Plaintext
# Tests for compatibility between llvm-cov and gcov. These work by
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# comparing llvm-cov against reference outputs generated by gcov 4.2.
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# "cd" and globbing are unsupported in lit internal runner.
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REQUIRES: shell
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RUN: rm -rf %t
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RUN: mkdir %t
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RUN: cd %t
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RUN: cp %p/Inputs/test* .
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# Basic behaviour with no flags
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RUN: llvm-cov test.c | diff -u test_no_options.output -
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RUN: diff -aub test_no_options.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_no_options.h.gcov test.h.gcov
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# Same, but specifying the object directory
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RUN: mkdir -p %t/objdir
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RUN: cp test.gcno test.gcda %t/objdir
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RUN: llvm-cov -o objdir test.c | diff -u test_no_options.output -
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RUN: diff -aub test_objdir.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_objdir.h.gcov test.h.gcov
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# Preserve paths. This mangles the output filenames.
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RUN: mkdir -p %t/srcdir/nested_dir
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RUN: cp test.cpp test.h %t/srcdir
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RUN: llvm-cov -p test_paths.cpp | diff -u test_preserve_paths.output -
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RUN: diff -aub test_paths.cpp.gcov srcdir#nested_dir#^#test.cpp.gcov
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RUN: diff -aub test_paths.h.gcov srcdir#nested_dir#^#test.h.gcov
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# Don't preserve paths. Same results as preserve paths, but no mangling.
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RUN: llvm-cov test_paths.cpp | diff -u test_no_preserve_paths.output -
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RUN: diff -aub test_paths.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_paths.h.gcov test.h.gcov
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# Function summaries. This changes stdout, but not the gcov files.
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RUN: llvm-cov test.c -f | diff -u test_-f.output -
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RUN: diff -aub test_no_options.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_no_options.h.gcov test.h.gcov
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# All blocks. This doesn't affect stdout, only the gcov files.
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RUN: llvm-cov test.c -a | diff -u test_no_options.output -
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RUN: diff -aub test_-a.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_-a.h.gcov test.h.gcov
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# Branch probabilities.
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RUN: llvm-cov test.c -a -b | diff -u test_-b.output -
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RUN: diff -aub test_-a_-b.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_-a_-b.h.gcov test.h.gcov
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# Function summaries including branch probabilities.
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# FIXME: We don't correctly handle calls when -b and -f are used
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# together, so our output differs from gcov. Remove the 'not' from
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# this test once this is fixed.
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RUN: llvm-cov test.c -a -b -f | not diff -u test_-b_-f.output - >/dev/null
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RUN: diff -aub test_-a_-b.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_-a_-b.h.gcov test.h.gcov
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# Summarize unconditional branches too.
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RUN: llvm-cov test.c -a -b -u | diff -u test_-b.output -
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RUN: diff -aub test_-a_-b_-u.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_-a_-b_-u.h.gcov test.h.gcov
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# Absolute counts for branches.
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RUN: llvm-cov test.c -a -b -c -u | diff -u test_-b.output -
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RUN: diff -aub test_-a_-b_-c_-u.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_-a_-b_-c_-u.h.gcov test.h.gcov
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# Missing gcda file just gives 0 counts.
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RUN: llvm-cov test.c -gcda=no_such_gcda_file | diff -u test_no_gcda.output -
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RUN: diff -aub test_no_gcda.cpp.gcov test.cpp.gcov
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RUN: diff -aub test_no_gcda.h.gcov test.h.gcov
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# Invalid gcno file.
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RUN: not llvm-cov test.c -gcno=test_read_fail.gcno
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# Bad file checksum on gcda.
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RUN: not llvm-cov test.c -gcda=test_file_checksum_fail.gcda
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# Bad function checksum on gcda
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RUN: not llvm-cov test.c -gcda=test_func_checksum_fail.gcda
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XFAIL: powerpc64, s390x, mips, sparc
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