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[PATCH 0/5] Merger of jit branch (v2)


I'd like to merge the JIT branch into trunk:
  https://gcc.gnu.org/wiki/JIT

This is "v2" since it incorporates fixes for the various issues
identified by Joseph in an earlier submission:
  https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02056.html

I've split up the current diff between trunk and the branch into 5
areas for ease of review (and to allow for early merger of the
supporting work, if it's deemed ready):

patch 1: exposes an entrypoint in libiberty that I need
patch 2: configure and Makefile changes in "gcc"
patch 3: timevar.h: Add an auto_timevar class
patch 4: State cleanups in "gcc"
patch 5: Add the "jit" code itself

[this is a diff of trunk r215958 aka
e012cdc775868e9922f5fef9068a764546876d93 which is from 2014-10-06,
vs jit branch version 75b3ee7acdc6de55354d65bb7d619386463e50a1].

I've successfully bootstrapped and regression-tested the cumulative
result of all of the patches against a control build, building them
both with --enable-host-shared, and with
  --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto
adding ",jit" to the test build (both on x86_64-unknown-linux-gnu;
Fedora 20).

There were no regressions vs the control build, and the patched build
gains a jit.sum, with 4663 passes (and no failures).

OK for trunk?

Overall diffstat follows:

 ChangeLog.jit                                      |   23 +
 MAINTAINERS                                        |    1 +
 contrib/ChangeLog.jit                              |   14 +
 contrib/jit-coverage-report.py                     |   67 +
 gcc/ChangeLog.jit                                  |  323 +
 gcc/Makefile.in                                    |    9 +
 gcc/cgraph.c                                       |   14 +
 gcc/cgraph.h                                       |    6 +
 gcc/cgraphunit.c                                   |   20 +-
 gcc/configure                                      |   54 +-
 gcc/configure.ac                                   |   11 +
 gcc/diagnostic.c                                   |   11 +-
 gcc/doc/install.texi                               |    2 +-
 gcc/dwarf2out.c                                    |   87 +
 gcc/dwarf2out.h                                    |    2 +
 gcc/gcse.c                                         |    9 +
 gcc/gcse.h                                         |    2 +
 gcc/ggc-page.c                                     |    5 +
 gcc/input.c                                        |    2 +-
 gcc/ipa-cp.c                                       |   12 +
 gcc/ipa-pure-const.c                               |  113 +-
 gcc/ipa-reference.c                                |   17 +-
 gcc/ipa-reference.h                                |    1 +
 gcc/java/ChangeLog.jit                             |   14 +
 gcc/jit/ChangeLog                                  |    9 +
 gcc/jit/ChangeLog.jit                              | 3252 ++++++++++
 gcc/jit/Make-lang.in                               |  297 +
 gcc/jit/TODO.rst                                   |  119 +
 gcc/jit/config-lang.in                             |   42 +
 gcc/jit/docs/Makefile                              |  153 +
 gcc/jit/docs/_build/texinfo/Makefile               |   50 +
 gcc/jit/docs/_build/texinfo/factorial.png          |  Bin 0 -> 183838 bytes
 gcc/jit/docs/_build/texinfo/libgccjit.texi         | 6724 ++++++++++++++++++++
 gcc/jit/docs/_build/texinfo/sum-of-squares.png     |  Bin 0 -> 22839 bytes
 gcc/jit/docs/conf.py                               |  258 +
 gcc/jit/docs/examples/install-hello-world.c        |  123 +
 gcc/jit/docs/examples/tut01-square.c               |  107 +
 gcc/jit/docs/examples/tut02-sum-of-squares.c       |  172 +
 gcc/jit/docs/examples/tut03-toyvm/Makefile         |   11 +
 gcc/jit/docs/examples/tut03-toyvm/factorial.toy    |   50 +
 gcc/jit/docs/examples/tut03-toyvm/fibonacci.toy    |   66 +
 gcc/jit/docs/examples/tut03-toyvm/toyvm.c          |  861 +++
 gcc/jit/docs/index.rst                             |   50 +
 gcc/jit/docs/internals/index.rst                   |  157 +
 gcc/jit/docs/intro/factorial.png                   |  Bin 0 -> 183838 bytes
 gcc/jit/docs/intro/index.rst                       |   27 +
 gcc/jit/docs/intro/install.rst                     |  227 +
 gcc/jit/docs/intro/sum-of-squares.png              |  Bin 0 -> 22839 bytes
 gcc/jit/docs/intro/tutorial01.rst                  |  349 +
 gcc/jit/docs/intro/tutorial02.rst                  |  378 ++
 gcc/jit/docs/intro/tutorial03.rst                  | 1108 ++++
 gcc/jit/docs/topics/contexts.rst                   |  315 +
 gcc/jit/docs/topics/expressions.rst                |  524 ++
 gcc/jit/docs/topics/functions.rst                  |  311 +
 gcc/jit/docs/topics/index.rst                      |   30 +
 gcc/jit/docs/topics/locations.rst                  |   69 +
 gcc/jit/docs/topics/objects.rst                    |   86 +
 gcc/jit/docs/topics/results.rst                    |   48 +
 gcc/jit/docs/topics/types.rst                      |  217 +
 gcc/jit/dummy-frontend.c                           |  248 +
 gcc/jit/jit-builtins.c                             |  424 ++
 gcc/jit/jit-builtins.h                             |  114 +
 gcc/jit/jit-common.h                               |  182 +
 gcc/jit/jit-playback.c                             | 2098 ++++++
 gcc/jit/jit-playback.h                             |  564 ++
 gcc/jit/jit-recording.c                            | 3415 ++++++++++
 gcc/jit/jit-recording.h                            | 1593 +++++
 gcc/jit/libgccjit++.h                              | 1574 +++++
 gcc/jit/libgccjit.c                                | 1506 +++++
 gcc/jit/libgccjit.h                                |  977 +++
 gcc/jit/libgccjit.map                              |  100 +
 gcc/jit/libgccjit.pc.in                            |   11 +
 gcc/jit/notes.txt                                  |   84 +
 gcc/main.c                                         |    6 +-
 gcc/params.c                                       |   14 +
 gcc/params.h                                       |    4 +
 gcc/passes.c                                       |    6 +
 gcc/stringpool.c                                   |    5 +
 gcc/testsuite/ChangeLog.jit                        |  601 ++
 gcc/testsuite/jit.dg/all-non-failing-tests.h       |  166 +
 gcc/testsuite/jit.dg/harness.h                     |  242 +
 gcc/testsuite/jit.dg/jit.exp                       |  259 +
 gcc/testsuite/jit.dg/test-accessing-struct.c       |  112 +
 gcc/testsuite/jit.dg/test-accessing-union.c        |   97 +
 gcc/testsuite/jit.dg/test-array-as-pointer.c       |  101 +
 gcc/testsuite/jit.dg/test-arrays.c                 |  165 +
 .../jit.dg/test-calling-external-function.c        |  118 +
 gcc/testsuite/jit.dg/test-calling-function-ptr.c   |  118 +
 gcc/testsuite/jit.dg/test-combination.c            |   67 +
 gcc/testsuite/jit.dg/test-dot-product.c            |  129 +
 gcc/testsuite/jit.dg/test-empty.c                  |   20 +
 .../test-error-accessing-field-in-other-struct.c   |  114 +
 .../jit.dg/test-error-adding-to-terminated-block.c |   48 +
 gcc/testsuite/jit.dg/test-error-array-as-pointer.c |   99 +
 gcc/testsuite/jit.dg/test-error-bad-cast.c         |   63 +
 .../jit.dg/test-error-block-in-wrong-function.c    |   65 +
 ...-error-call-through-ptr-with-mismatching-args.c |   74 +
 ...test-error-call-through-ptr-with-non-function.c |   65 +
 .../test-error-call-through-ptr-with-non-pointer.c |   62 +
 ...t-error-call-through-ptr-with-not-enough-args.c |   70 +
 ...est-error-call-through-ptr-with-too-many-args.c |   87 +
 .../jit.dg/test-error-call-with-mismatching-args.c |   87 +
 .../jit.dg/test-error-call-with-not-enough-args.c  |   87 +
 .../jit.dg/test-error-call-with-too-many-args.c    |   89 +
 .../test-error-dereference-field-of-non-pointer.c  |   95 +
 .../test-error-dereference-read-of-non-pointer.c   |   55 +
 .../jit.dg/test-error-index-not-a-numeric-type.c   |   34 +
 .../test-error-mismatching-types-in-assignment.c   |   61 +
 .../jit.dg/test-error-mismatching-types-in-call.c  |   80 +
 gcc/testsuite/jit.dg/test-error-missing-return.c   |   40 +
 .../jit.dg/test-error-null-passed-to-api.c         |   31 +
 .../test-error-return-within-void-function.c       |   54 +
 .../jit.dg/test-error-unreachable-block.c          |   50 +
 .../jit.dg/test-error-unterminated-block.c         |   42 +
 .../jit.dg/test-error-value-not-a-numeric-type.c   |   29 +
 gcc/testsuite/jit.dg/test-expressions.c            |  896 +++
 gcc/testsuite/jit.dg/test-factorial.c              |  103 +
 gcc/testsuite/jit.dg/test-fibonacci.c              |  136 +
 gcc/testsuite/jit.dg/test-functions.c              |  356 ++
 gcc/testsuite/jit.dg/test-fuzzer.c                 |  462 ++
 gcc/testsuite/jit.dg/test-hello-world.c            |   72 +
 gcc/testsuite/jit.dg/test-linked-list.c            |  141 +
 gcc/testsuite/jit.dg/test-long-names.c             |  112 +
 gcc/testsuite/jit.dg/test-nested-contexts.c        |  641 ++
 gcc/testsuite/jit.dg/test-nested-loops.c           |  179 +
 gcc/testsuite/jit.dg/test-operator-overloading.cc  |  310 +
 gcc/testsuite/jit.dg/test-quadratic.c              |  488 ++
 gcc/testsuite/jit.dg/test-quadratic.cc             |  366 ++
 gcc/testsuite/jit.dg/test-reading-struct.c         |  135 +
 gcc/testsuite/jit.dg/test-string-literal.c         |   52 +
 gcc/testsuite/jit.dg/test-sum-of-squares.c         |  126 +
 gcc/testsuite/jit.dg/test-threads.c                |  252 +
 gcc/testsuite/jit.dg/test-types.c                  |  361 ++
 gcc/testsuite/jit.dg/test-using-global.c           |   73 +
 gcc/testsuite/jit.dg/test-volatile.c               |   66 +
 gcc/timevar.c                                      |    3 +
 gcc/timevar.def                                    |    6 +
 gcc/timevar.h                                      |   24 +
 gcc/toplev.c                                       |   67 +-
 gcc/toplev.h                                       |   19 +-
 include/ChangeLog.jit                              |   11 +
 include/libiberty.h                                |    5 +
 libbacktrace/ChangeLog.jit                         |   14 +
 libcpp/ChangeLog.jit                               |   22 +
 libdecnumber/ChangeLog.jit                         |   22 +
 libiberty/ChangeLog.jit                            |   23 +
 libiberty/choose-temp.c                            |    1 -
 libiberty/functions.texi                           |   13 +-
 libiberty/make-temp-file.c                         |    4 +-
 zlib/ChangeLog.jit                                 |   22 +
 150 files changed, 39206 insertions(+), 87 deletions(-)
 create mode 100644 ChangeLog.jit
 create mode 100644 contrib/ChangeLog.jit
 create mode 100644 contrib/jit-coverage-report.py
 create mode 100644 gcc/ChangeLog.jit
 create mode 100644 gcc/java/ChangeLog.jit
 create mode 100644 gcc/jit/ChangeLog
 create mode 100644 gcc/jit/ChangeLog.jit
 create mode 100644 gcc/jit/Make-lang.in
 create mode 100644 gcc/jit/TODO.rst
 create mode 100644 gcc/jit/config-lang.in
 create mode 100644 gcc/jit/docs/Makefile
 create mode 100644 gcc/jit/docs/_build/texinfo/Makefile
 create mode 100644 gcc/jit/docs/_build/texinfo/factorial.png
 create mode 100644 gcc/jit/docs/_build/texinfo/libgccjit.texi
 create mode 100644 gcc/jit/docs/_build/texinfo/sum-of-squares.png
 create mode 100644 gcc/jit/docs/conf.py
 create mode 100644 gcc/jit/docs/examples/install-hello-world.c
 create mode 100644 gcc/jit/docs/examples/tut01-square.c
 create mode 100644 gcc/jit/docs/examples/tut02-sum-of-squares.c
 create mode 100644 gcc/jit/docs/examples/tut03-toyvm/Makefile
 create mode 100644 gcc/jit/docs/examples/tut03-toyvm/factorial.toy
 create mode 100644 gcc/jit/docs/examples/tut03-toyvm/fibonacci.toy
 create mode 100644 gcc/jit/docs/examples/tut03-toyvm/toyvm.c
 create mode 100644 gcc/jit/docs/index.rst
 create mode 100644 gcc/jit/docs/internals/index.rst
 create mode 100644 gcc/jit/docs/intro/factorial.png
 create mode 100644 gcc/jit/docs/intro/index.rst
 create mode 100644 gcc/jit/docs/intro/install.rst
 create mode 100644 gcc/jit/docs/intro/sum-of-squares.png
 create mode 100644 gcc/jit/docs/intro/tutorial01.rst
 create mode 100644 gcc/jit/docs/intro/tutorial02.rst
 create mode 100644 gcc/jit/docs/intro/tutorial03.rst
 create mode 100644 gcc/jit/docs/topics/contexts.rst
 create mode 100644 gcc/jit/docs/topics/expressions.rst
 create mode 100644 gcc/jit/docs/topics/functions.rst
 create mode 100644 gcc/jit/docs/topics/index.rst
 create mode 100644 gcc/jit/docs/topics/locations.rst
 create mode 100644 gcc/jit/docs/topics/objects.rst
 create mode 100644 gcc/jit/docs/topics/results.rst
 create mode 100644 gcc/jit/docs/topics/types.rst
 create mode 100644 gcc/jit/dummy-frontend.c
 create mode 100644 gcc/jit/jit-builtins.c
 create mode 100644 gcc/jit/jit-builtins.h
 create mode 100644 gcc/jit/jit-common.h
 create mode 100644 gcc/jit/jit-playback.c
 create mode 100644 gcc/jit/jit-playback.h
 create mode 100644 gcc/jit/jit-recording.c
 create mode 100644 gcc/jit/jit-recording.h
 create mode 100644 gcc/jit/libgccjit++.h
 create mode 100644 gcc/jit/libgccjit.c
 create mode 100644 gcc/jit/libgccjit.h
 create mode 100644 gcc/jit/libgccjit.map
 create mode 100644 gcc/jit/libgccjit.pc.in
 create mode 100644 gcc/jit/notes.txt
 create mode 100644 gcc/testsuite/ChangeLog.jit
 create mode 100644 gcc/testsuite/jit.dg/all-non-failing-tests.h
 create mode 100644 gcc/testsuite/jit.dg/harness.h
 create mode 100644 gcc/testsuite/jit.dg/jit.exp
 create mode 100644 gcc/testsuite/jit.dg/test-accessing-struct.c
 create mode 100644 gcc/testsuite/jit.dg/test-accessing-union.c
 create mode 100644 gcc/testsuite/jit.dg/test-array-as-pointer.c
 create mode 100644 gcc/testsuite/jit.dg/test-arrays.c
 create mode 100644 gcc/testsuite/jit.dg/test-calling-external-function.c
 create mode 100644 gcc/testsuite/jit.dg/test-calling-function-ptr.c
 create mode 100644 gcc/testsuite/jit.dg/test-combination.c
 create mode 100644 gcc/testsuite/jit.dg/test-dot-product.c
 create mode 100644 gcc/testsuite/jit.dg/test-empty.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-accessing-field-in-other-struct.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-adding-to-terminated-block.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-array-as-pointer.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-bad-cast.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-block-in-wrong-function.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-through-ptr-with-mismatching-args.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-through-ptr-with-non-function.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-through-ptr-with-non-pointer.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-through-ptr-with-not-enough-args.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-through-ptr-with-too-many-args.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-with-mismatching-args.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-with-not-enough-args.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-call-with-too-many-args.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-dereference-field-of-non-pointer.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-dereference-read-of-non-pointer.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-index-not-a-numeric-type.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-mismatching-types-in-assignment.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-mismatching-types-in-call.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-missing-return.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-null-passed-to-api.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-return-within-void-function.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-unreachable-block.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-unterminated-block.c
 create mode 100644 gcc/testsuite/jit.dg/test-error-value-not-a-numeric-type.c
 create mode 100644 gcc/testsuite/jit.dg/test-expressions.c
 create mode 100644 gcc/testsuite/jit.dg/test-factorial.c
 create mode 100644 gcc/testsuite/jit.dg/test-fibonacci.c
 create mode 100644 gcc/testsuite/jit.dg/test-functions.c
 create mode 100644 gcc/testsuite/jit.dg/test-fuzzer.c
 create mode 100644 gcc/testsuite/jit.dg/test-hello-world.c
 create mode 100644 gcc/testsuite/jit.dg/test-linked-list.c
 create mode 100644 gcc/testsuite/jit.dg/test-long-names.c
 create mode 100644 gcc/testsuite/jit.dg/test-nested-contexts.c
 create mode 100644 gcc/testsuite/jit.dg/test-nested-loops.c
 create mode 100644 gcc/testsuite/jit.dg/test-operator-overloading.cc
 create mode 100644 gcc/testsuite/jit.dg/test-quadratic.c
 create mode 100644 gcc/testsuite/jit.dg/test-quadratic.cc
 create mode 100644 gcc/testsuite/jit.dg/test-reading-struct.c
 create mode 100644 gcc/testsuite/jit.dg/test-string-literal.c
 create mode 100644 gcc/testsuite/jit.dg/test-sum-of-squares.c
 create mode 100644 gcc/testsuite/jit.dg/test-threads.c
 create mode 100644 gcc/testsuite/jit.dg/test-types.c
 create mode 100644 gcc/testsuite/jit.dg/test-using-global.c
 create mode 100644 gcc/testsuite/jit.dg/test-volatile.c
 create mode 100644 include/ChangeLog.jit
 create mode 100644 libbacktrace/ChangeLog.jit
 create mode 100644 libcpp/ChangeLog.jit
 create mode 100644 libdecnumber/ChangeLog.jit
 create mode 100644 libiberty/ChangeLog.jit
 create mode 100644 zlib/ChangeLog.jit

-- 
1.8.5.3


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