[PATCH,FORTRAN 00/29] Move towards stringpool, part 1

[Bernhard Reutner-Fischer]

Hi,

The fortran frontend still uses stack-based handling of (symbol) names
with fixed-sized buffers. Furthermore these buffers often are too small
when dealing with F2003 identifiers which can be up to, including 63
bytes long.

Other frontends use the stringpool since many years.
This janitorial series is a first step towards using the stringpool in
the frontend.
Consequently this allows us to use pointer-comparison to see if two
given "names" are identical instead of doing lots and lots of string
comparisons.


Part 1 switches most of the fortran FE. An eventual part 2 would
continue to switch the few remaining stack-based identifier
manipulations to use the stringpool. My initial plan was to also see if
switching gfc_symtree from treap to a hash_map would bring us any
measurable benefit, but that, too, is left for an eventual part 2.

Bootstrapped and regtested on x86_64-foo-linux.

I'd appreciate if someone could double check for regressions on other
setups. Git branch:
https://gcc.gnu.org/git/?p=gcc.git;a=log;h=refs/heads/aldot/fortran-fe-stringpool

Ok for trunk?

Bernhard Reutner-Fischer (29):
  gdbinit: break on gfc_internal_error
  Use stringpool for gfc_match_defined_op_name()
  Use stringpool for gfc_get_name
  Use stringpool for gfc_match_generic_spec
  Use stringpool for gfc_match("%n")
  Use stringpool for association_list
  Use stringpool for some gfc_code2string return values
  Add uop/name helpers
  Use stringpool for modules
  Do not copy name for check_function_name
  Do pointer comparison instead of strcmp
  Use stringpool for remaining names
  Use stringpool for intrinsics and common
  Fix write_omp_udr for user-operator REDUCTIONs
  Use stringpool for iso_c_binding module names
  Do pointer comparison in iso_c_binding_module
  Use stringpool for iso_fortran_env
  Use stringpool for charkind
  Use stringpool and unified uppercase handling for types
  Use stringpool in class et al
  Use stringpool for module tbp
  Use stringpool in class and procedure-pointer result
  Use stringpool for module binding_label
  Use stringpool for intrinsic functions
  Use stringpool on loading module symbols
  Use stringpool for mangled common names
  Use stringpool for OMP clause reduction code
  Free type-bound procedure structs
  PR87103: Remove max symbol length check from gfc_new_symbol

 gcc/fortran/check.c           |   2 +-
 gcc/fortran/class.c           |  96 +++++------
 gcc/fortran/decl.c            | 265 ++++++++++++++---------------
 gcc/fortran/expr.c            |   4 +-
 gcc/fortran/frontend-passes.c |  16 +-
 gcc/fortran/gfortran.h        |  18 +-
 gcc/fortran/interface.c       | 109 ++++++------
 gcc/fortran/intrinsic.c       |  11 +-
 gcc/fortran/io.c              |  10 +-
 gcc/fortran/iresolve.c        |  35 ++--
 gcc/fortran/match.c           | 143 ++++++++--------
 gcc/fortran/match.h           |   9 +-
 gcc/fortran/matchexp.c        |  22 ++-
 gcc/fortran/misc.c            |   2 +-
 gcc/fortran/module.c          | 311 ++++++++++++++--------------------
 gcc/fortran/openmp.c          | 120 +++++++------
 gcc/fortran/parse.c           |  23 ++-
 gcc/fortran/primary.c         |  58 ++++---
 gcc/fortran/resolve.c         |  81 +++++----
 gcc/fortran/symbol.c          |  58 ++++---
 gcc/fortran/trans-array.c     |   4 +-
 gcc/fortran/trans-common.c    |  10 +-
 gcc/fortran/trans-decl.c      |  38 ++---
 gcc/fortran/trans-expr.c      |  11 +-
 gcc/fortran/trans-openmp.c    |   1 +
 gcc/fortran/trans-types.c     |  20 +--
 gcc/fortran/trans.c           |   6 +-
 gcc/gdbinit.in                |   1 +
 28 files changed, 719 insertions(+), 765 deletions(-)

-- 
2.19.0.rc1