[PATCH v4 00/18] perf clang: Builtin clang and perfhook support

[Wang Nan]

This is version 4 of perf builtin clang and perfhook patch series.

In this patch set:
  1. Cleanup options passed to clang.
  2. Check LLVM version. Fail if llvm version < 3.9.0, and
     warn when it > 3.9.0. More version will be allowed after
     releasing of LLVM 3.9.1 / 4.0.0.
  3. Support dynamic linking LLVM and clang libraries.
  4. Rebase to Arnaldo's newest perf/core.

Wang Nan (18):
  perf build: Check LLVM version in feature check
  perf build: Support dynamic linking clang libraries
  perf clang: Cleanup clang options
  perf clang: Pass full path to builtin clang
  perf clang: Pass CFLAGS to builtin clang
  perf clang jit: Wrap llvm::Module using PerfModule
  perf clang jit: Insignt BPF and JIT functions in a Module
  perf clang jit: add PerfModule::doJIT to JIT perfhook functions
  perf clang jit: Export functions for jitted code
  perf clang jit: Actually JIT and hook in bpf loader
  perf clang jit: Collect the lowest address in maps section as map_base
  perf clang jit: Retrive fd of BPF map from its offset
  perf clang jit: Allow jitted perf hook access BPF maps
  perf clang: Link BPF functions declaration into perf
  perf clang: Declare BPF functions for BPF scripts automatically
  perf clang: Include helpers to BPF scripts
  perf clang builtin: Define hook helpers by default
  perf clang jit: Export getpid() to perf hook

 tools/build/feature/Makefile                  |   8 +-
 tools/build/feature/test-llvm-version.cpp     |  12 +
 tools/build/feature/test-llvm.cpp             |   5 +
 tools/perf/Makefile.config                    |   8 +-
 tools/perf/Makefile.perf                      |  20 +-
 tools/perf/tests/Build                        |   2 +-
 tools/perf/tests/bpf-script-example.c         |  30 ++-
 tools/perf/tests/bpf-script-test-kbuild.c     |   2 +
 tools/perf/tests/bpf-script-test-prologue.c   |   6 +-
 tools/perf/tests/bpf-script-test-relocation.c |  17 +-
 tools/perf/tests/clang.c                      |   4 +
 tools/perf/util/Build                         |   1 +
 tools/perf/util/bpf-loader.c                  |  85 ++++++-
 tools/perf/util/bpf-loader.h                  |  19 ++
 tools/perf/util/c++/Build                     |   2 +
 tools/perf/util/c++/bpf-funcs-str.c           |  49 ++++
 tools/perf/util/c++/bpf-helper-str.c          |  23 ++
 tools/perf/util/c++/clang-bpf-includes.h      |  13 +
 tools/perf/util/c++/clang-c.h                 |  24 +-
 tools/perf/util/c++/clang-test.cpp            |  51 +++-
 tools/perf/util/c++/clang.cpp                 | 335 ++++++++++++++++++++++++--
 tools/perf/util/c++/clang.h                   |  47 +++-
 tools/perf/util/jit-helpers.c                 |  57 +++++
 tools/perf/util/jit-helpers.h                 |  28 +++
 tools/perf/util/llvm-utils.h                  |   9 +-
 25 files changed, 802 insertions(+), 55 deletions(-)
 create mode 100644 tools/build/feature/test-llvm-version.cpp
 create mode 100644 tools/perf/util/c++/bpf-funcs-str.c
 create mode 100644 tools/perf/util/c++/bpf-helper-str.c
 create mode 100644 tools/perf/util/c++/clang-bpf-includes.h
 create mode 100644 tools/perf/util/jit-helpers.c
 create mode 100644 tools/perf/util/jit-helpers.h

Signed-off-by: Wang Nan <wangnan0@xxxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: He Kuang <hekuang@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Joe Stringer <joe@xxxxxxx>
Cc: Zefan Li <lizefan@xxxxxxxxxx>
Cc: pi3orama@xxxxxxx
-- 
2.10.1