1 llvm-tli-checker - TargetLibraryInfo vs library checker
2 =======================================================
4 .. program:: llvm-tli-checker
9 :program:`llvm-tli-checker` [*options*] [*library-file...*]
14 :program:`llvm-tli-checker` compares TargetLibraryInfo's opinion of the
15 availability of library functions against the set of functions exported
16 by the specified library files, reporting any disagreements between TLI's
17 opinion and whether the function is actually present. This is primarily
18 useful for vendors to ensure the TLI for their target is correct, and
19 the compiler will not "optimize" some code sequence into a library call
20 that is not actually available.
25 .. code-block:: console
27 $ llvm-tli-checker --triple x86_64-scei-ps4 example.so
28 TLI knows 466 symbols, 235 available for 'x86_64-scei-ps4'
30 Looking for symbols in 'example.so'
31 Found 235 global function symbols in 'example.so'
32 Found a grand total of 235 library symbols
33 << TLI yes SDK no: '_ZdaPv' aka operator delete[](void*)
34 >> TLI no SDK yes: '_ZdaPvj' aka operator delete[](void*, unsigned int)
35 << Total TLI yes SDK no: 1
36 >> Total TLI no SDK yes: 1
37 == Total TLI yes SDK yes: 234
38 FAIL: LLVM TLI doesn't match SDK libraries.
43 .. option:: --dump-tli
45 Print "available"/"not available" for each library function, according to
46 TargetLibraryInfo's information for the specified triple, and exit. This
47 option does not read any input files.
49 .. option:: --help, -h
51 Print a summary of command line options and exit.
53 .. option:: --libdir=<directory>
55 A base directory to prepend to each library file path. This is handy
56 when there are a number of library files all in the same directory, or
57 a list of input filenames are kept in a response file.
59 .. option:: --report=<level>
61 The amount of information to report. <level> can be summary, discrepancy,
62 or full. A summary report gives only the count of matching and mis-matching
63 symbols; discrepancy lists the mis-matching symbols; and full lists all
64 symbols known to TLI, matching or mis-matching. The default is discrepancy.
66 .. option:: --separate
68 Read and report a summary for each library file separately. This can be
69 useful to identify library files that don't contribute anything that TLI
70 knows about. Implies --report=summary (can be overridden).
72 .. option:: --triple=<triple>
74 The triple to use for initializing TargetLibraryInfo.
78 Read command-line options and/or library names from response file `<FILE>`.
83 :program:`llvm-tli-checker` returns 0 even if there are mismatches. It returns a
84 non-zero exit code if there is an unrecognized option, or no input files are