# Tests for compatibility between llvm-cov and gcov. These work by
# comparing llvm-cov against reference outputs generated by gcov 4.2.

# Test fails on Windows where internal shell is used due to path separator
# mismatches.
REQUIRES: shell

RUN: rm -rf %t
RUN: mkdir %t
RUN: cd %t
RUN: cp %p/Inputs/test* .

# Basic behaviour with no flags
RUN: llvm-cov gcov test.c | diff -u test_no_options.output -
RUN: diff -aub test_no_options.cpp.gcov test.cpp.gcov
RUN: diff -aub test_no_options.h.gcov test.h.gcov

# Same, but specifying the object directory
RUN: mkdir -p %t/objdir
RUN: cp test.gcno test.gcda %t/objdir
RUN: llvm-cov gcov -o objdir test.c | diff -u test_no_options.output -
RUN: diff -aub test_objdir.cpp.gcov test.cpp.gcov
RUN: diff -aub test_objdir.h.gcov test.h.gcov

# Specifying an object file
RUN: llvm-cov gcov -o objdir/test.o test.c | diff -u test_no_options.output -
RUN: diff -aub test_objdir.cpp.gcov test.cpp.gcov
RUN: diff -aub test_objdir.h.gcov test.h.gcov

# Specifying an object file that could be ambiguous with a directory
RUN: llvm-cov gcov -o objdir/test test.c | diff -u test_no_options.output -
RUN: diff -aub test_objdir.cpp.gcov test.cpp.gcov
RUN: diff -aub test_objdir.h.gcov test.h.gcov

# With gcov output disabled
RUN: llvm-cov gcov -n test.c | diff -u test_no_output.output -

# Missing source files. This test is fragile, as it depends on being
# run before we copy some sources into place in the next test.
RUN: llvm-cov gcov test_paths.cpp 2>/dev/null | diff -u test_missing.output -
RUN: diff -aub test_missing.cpp.gcov test.cpp.gcov
RUN: diff -aub test_missing.h.gcov test.h.gcov

# Preserve paths. This mangles the output filenames.
RUN: mkdir -p %t/srcdir/nested_dir
RUN: cp test.cpp test.h %t/srcdir
RUN: llvm-cov gcov -p test_paths.cpp | diff -u test_preserve_paths.output -
RUN: diff -aub test_paths.cpp.gcov srcdir#nested_dir#^#test.cpp.gcov
RUN: diff -aub test_paths.h.gcov srcdir#nested_dir#^#test.h.gcov

# Don't preserve paths. Same results as preserve paths, but no mangling.
RUN: llvm-cov gcov test_paths.cpp | diff -u test_no_preserve_paths.output -
RUN: diff -aub test_paths.cpp.gcov test.cpp.gcov
RUN: diff -aub test_paths.h.gcov test.h.gcov

# Long file names.
RUN: llvm-cov gcov -l test_paths.cpp | diff -u test_long_file_names.output -
RUN: diff -aub test_paths.cpp.gcov test_paths.cpp##test.cpp.gcov
RUN: diff -aub test_paths.h.gcov test_paths.cpp##test.h.gcov

# Long file names and preserve paths.
RUN: llvm-cov gcov -lp -gcno test_paths.gcno -gcda test_paths.gcda srcdir/../test_paths.cpp | diff -u test_long_paths.output -
RUN: diff -aub test_paths.cpp.gcov srcdir#^#test_paths.cpp##srcdir#nested_dir#^#test.cpp.gcov
RUN: diff -aub test_paths.h.gcov srcdir#^#test_paths.cpp##srcdir#nested_dir#^#test.h.gcov

# Function summaries. This changes stdout, but not the gcov files.
RUN: llvm-cov gcov test.c -f | diff -u test_-f.output -
RUN: diff -aub test_no_options.cpp.gcov test.cpp.gcov
RUN: diff -aub test_no_options.h.gcov test.h.gcov

# All blocks. This doesn't affect stdout, only the gcov files.
RUN: llvm-cov gcov test.c -a | diff -u test_no_options.output -
RUN: diff -aub test_-a.cpp.gcov test.cpp.gcov
RUN: diff -aub test_-a.h.gcov test.h.gcov

# Branch probabilities.
RUN: llvm-cov gcov test.c -a -b | diff -u test_-b.output -
RUN: diff -aub test_-a_-b.cpp.gcov test.cpp.gcov
RUN: diff -aub test_-a_-b.h.gcov test.h.gcov

# Function summaries including branch probabilities.

# FIXME: We don't correctly handle calls when -b and -f are used
# together, so our output differs from gcov. Remove the 'not' from
# this test once this is fixed.
RUN: llvm-cov gcov test.c -a -b -f | not diff -u test_-b_-f.output - >/dev/null
RUN: diff -aub test_-a_-b.cpp.gcov test.cpp.gcov
RUN: diff -aub test_-a_-b.h.gcov test.h.gcov

# Summarize unconditional branches too.
RUN: llvm-cov gcov test.c -a -b -u | diff -u test_-b.output -
RUN: diff -aub test_-a_-b_-u.cpp.gcov test.cpp.gcov
RUN: diff -aub test_-a_-b_-u.h.gcov test.h.gcov

# Absolute counts for branches.
RUN: llvm-cov gcov test.c -a -b -c -u | diff -u test_-b.output -
RUN: diff -aub test_-a_-b_-c_-u.cpp.gcov test.cpp.gcov
RUN: diff -aub test_-a_-b_-c_-u.h.gcov test.h.gcov

# Missing gcda file just gives 0 counts.
RUN: llvm-cov gcov test.c -gcda=no_such_gcda_file | diff -u test_no_gcda.output -
RUN: diff -aub test_no_gcda.cpp.gcov test.cpp.gcov
RUN: diff -aub test_no_gcda.h.gcov test.h.gcov

# Invalid gcno file.
RUN: llvm-cov gcov test.c -gcno=test_read_fail.gcno

# Bad file checksum on gcda.
RUN: llvm-cov gcov test.c -gcda=test_file_checksum_fail.gcda

# Bad function checksum on gcda
RUN: llvm-cov gcov test.c -gcda=test_func_checksum_fail.gcda

# Has arcs from exit blocks
RUN: llvm-cov gcov test_exit_block_arcs.c 2>&1 | FileCheck %s -check-prefix=EXIT_BLOCK_ARCS
EXIT_BLOCK_ARCS: (main) has arcs from exit block.

XFAIL: powerpc64-, s390x, mips-, mips64-, sparc