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Peter Klausler da25f968a9 [flang] Runtime performance improvements to real formatted input 
Profiling a basic internal real input read benchmark shows some
hot spots in the code used to prepare input for decimal-to-binary
conversion, which is of course where the time should be spent.
The library that implements decimal to/from binary conversions has
been optimized, but not the code in the Fortran runtime that calls it,
and there are some obvious light changes worth making here.

Move some member functions from *.cpp files into the class definitions
of Descriptor and IoStatementState to enable inlining and specialization.

Make GetNextInputBytes() the new basic input API within the
runtime, replacing GetCurrentChar() -- which is rewritten in terms of
GetNextInputBytes -- so that input routines can have the
ability to acquire more than one input character at a time
and amortize overhead.

These changes speed up the time to read 1M random reals
using internal I/O from a character array from 1.29s to 0.54s
on my machine, which on par with Intel Fortran and much faster than
GNU Fortran.

Differential Revision: https://reviews.llvm.org/D113697
 		2021-11-12 11:40:02 -08:00
..
CMakeLists.txt [flang] Revert 3 commits pushed by mistake along b7c07ce15f 2021-10-01 09:01:31 +02:00
ISO_Fortran_binding.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
allocatable.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
assign.cpp [flang] Make subscript list argument a nullable pointer 2021-11-08 11:53:13 -08:00
buffer.cpp [flang] Remove *- C++ -* incantation from runtime .cpp files. NFC 2021-09-03 07:17:45 +00:00
buffer.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
character.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
command.cpp [flang] Implement GET_ENVIRONMENT_VARIABLE(VALUE) 2021-11-01 09:19:20 +00:00
complex-reduction.c [flang] Change complex type define in runtime for clang-cl 2021-09-22 06:54:33 +00:00
complex-reduction.h [flang] Change complex type define in runtime for clang-cl 2021-09-22 06:54:33 +00:00
config.h.cmake [flang] Support platforms without strerror_r 2020-03-28 16:46:43 -05:00
connection.cpp [flang] Complete the fix for NAMELIST look-ahead case 2021-11-08 10:01:16 -08:00
connection.h [flang] Complete the fix for NAMELIST look-ahead case 2021-11-08 10:01:16 -08:00
copy.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
copy.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
derived-api.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
derived.cpp [flang][NFC] Document behavior for nonspecified/ambiguous cases 2021-10-11 11:06:07 -07:00
derived.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
descriptor-io.cpp [flang] Fix legitimate warning from latest GCC 2021-07-20 11:40:34 -07:00
descriptor-io.h [flang] Make subscript list argument a nullable pointer 2021-11-08 11:53:13 -08:00
descriptor.cpp [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
dot-product.cpp [flang] Fix DOT_PRODUCT for logical 2021-10-22 15:56:20 -07:00
edit-input.cpp [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
edit-input.h [flang][msvc] Avoid dependence on long double 2020-10-07 15:12:08 -07:00
edit-output.cpp [flang] Fix rounding edge case in F output editing 2021-11-12 11:16:25 -08:00
edit-output.h [flang] Fix rounding edge case in F output editing 2021-11-12 11:16:25 -08:00
environment.cpp [flang] Respect NO_STOP_MESSAGE=1 in runtime 2021-11-12 10:50:36 -08:00
environment.h [flang] Respect NO_STOP_MESSAGE=1 in runtime 2021-11-12 10:50:36 -08:00
extrema.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
file.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
file.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
findloc.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
format-implementation.h [flang] Extension: allow tabs in output format strings 2021-10-22 15:53:29 -07:00
format.cpp [flang] Remove *- C++ -* incantation from runtime .cpp files. NFC 2021-09-03 07:17:45 +00:00
format.h [flang] Support NAMELIST input of short arrays 2021-10-22 13:38:11 -07:00
internal-unit.cpp [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
internal-unit.h [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
io-api.cpp [flang] Emit unformatted headers & footers even with RECL= 2021-10-22 11:07:01 -07:00
io-error.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
io-error.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
io-stmt.cpp [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
io-stmt.h [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
iostat.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
lock.h [flang] More Fortran runtime support for CHARACTER operations 2020-06-17 15:51:48 -07:00
main.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
matmul.cpp [flang] Speed common runtime cases of DOT_PRODUCT & MATMUL 2021-10-22 14:36:13 -07:00
memory.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
misc-intrinsic.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
namelist.cpp [flang] Make subscript list argument a nullable pointer 2021-11-08 11:53:13 -08:00
namelist.h [flang] Support NAMELIST input of short arrays 2021-10-22 13:38:11 -07:00
numeric.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
pointer.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
product.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
random.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
reduction-templates.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
reduction.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
stat.cpp [flang] Implement GET_ENVIRONMENT_VARIABLE(VALUE) 2021-11-01 09:19:20 +00:00
stat.h [flang] Implement GET_ENVIRONMENT_VARIABLE(VALUE) 2021-11-01 09:19:20 +00:00
stop.cpp [flang] Respect NO_STOP_MESSAGE=1 in runtime 2021-11-12 10:50:36 -08:00
sum.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
terminator.cpp [flang] Remove *- C++ -* incantation from runtime .cpp files. NFC 2021-09-03 07:17:45 +00:00
terminator.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
time-intrinsic.cpp [flang] More work on SYSTEM_CLOCK runtime API and implementation 2021-10-12 09:24:24 -07:00
tools.cpp [flang] runtime: Read environment variables directly 2021-10-28 07:49:30 +00:00
tools.h [flang] Speed common runtime cases of DOT_PRODUCT & MATMUL 2021-10-22 14:36:13 -07:00
transformational.cpp [flang] Fix ORDER= argument to RESHAPE 2021-11-12 10:25:00 -08:00
type-code.cpp [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
type-info.cpp [flang] Make subscript list argument a nullable pointer 2021-11-08 11:53:13 -08:00
type-info.h [flang] Make subscript list argument a nullable pointer 2021-11-08 11:53:13 -08:00
unit-map.cpp [flang] Remove *- C++ -* incantation from runtime .cpp files. NFC 2021-09-03 07:17:45 +00:00
unit-map.h [flang] Move runtime API headers to flang/include/flang/Runtime 2021-09-03 11:08:34 -07:00
unit.cpp [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00
unit.h [flang] Runtime performance improvements to real formatted input 2021-11-12 11:40:02 -08:00