ruby.git/include/ruby/internal/config.h, branch v3_0_4

Omit checks for C89 standard or later

2020-12-12T08:02:42+00:00

Now we require C99, these features available of course.

* prototypes
* stdarg prototypes
* token pasting
* stringization
* string literal concatenation

Fix a typo [ci skip]

2020-08-29T03:31:05+00:00

HAVE_STMT_AND_DECL_IN_EXPR: not for Sun C++

2020-08-21T02:04:54+00:00

Because we check HAVE_STMT_AND_DECL_IN_EXPR in configure, it is peoven
to work in C.  But C++ situation can be different.  Oracle Developer
Studio is another example of such things.

Enable arm64 optimizations that exist for power/x86 (#3393)

2020-08-13T17:15:54+00:00

* Enable unaligned accesses on arm64

64-bit Arm platforms support unaligned accesses.

Running the string benchmarks this change improves performance
by an average of 1.04x, min .96x, max 1.21x, median 1.01x

* arm64 enable gc optimizations

Similar to x86 and powerpc optimizations.

|       |compare-ruby|built-ruby|
|:------|-----------:|---------:|
|hash1  |       0.225|     0.237|
|       |           -|     1.05x|
|hash2  |       0.110|     0.110|
|       |       1.00x|         -|

* vm_exec.c: improve performance for arm64

|                               |compare-ruby|built-ruby|
|:------------------------------|-----------:|---------:|
|vm_array                       |     26.501M|   27.959M|
|                               |           -|     1.06x|
|vm_attr_ivar                   |     21.606M|   31.429M|
|                               |           -|     1.45x|
|vm_attr_ivar_set               |     21.178M|   26.113M|
|                               |           -|     1.23x|
|vm_backtrace                   |       6.621|     6.668|
|                               |           -|     1.01x|
|vm_bigarray                    |     26.205M|   29.958M|
|                               |           -|     1.14x|
|vm_bighash                     |    504.155k|  479.306k|
|                               |       1.05x|         -|
|vm_block                       |     16.692M|   21.315M|
|                               |           -|     1.28x|
|block_handler_type_iseq        |       5.083|     7.004|
|                               |           -|     1.38x|

sed -i 's|ruby/impl|ruby/internal|'

2020-05-11T00:24:08+00:00

To fix build failures.

mv include/ruby/{impl,internal}

2020-05-11T00:24:08+00:00

Devs do not love "impl".