Merge "perf(libc): use builtin implementations where possible" into integration

perf(libc): use builtin implementations where possible

When conditions are right, eg a small memcpy of a known size and
alignment, the compiler may know of a sequence that is optimal for the
given c

perf(libc): use builtin implementations where possible

When conditions are right, eg a small memcpy of a known size and
alignment, the compiler may know of a sequence that is optimal for the
given constraints and inline it. If the compiler doesn't find one, it
will emit a call to the generic function (in the libc) which will
implement this in the most generic and unconstrained manner. That
generic function is rarely the most optimal when constraints are known.

So give the compiler a chance to do this. Replace calls to libc
functions that have builtins to the builtin and keep the generic
implementation if it decides to emit a call anyway.

And example of this in action is usage of FEAT_MOPS. When the compiler
is aware of the feature (-march=armv8.8-a) then it will emit the 3 MOPS
instructions instead of calls to our memcpy() and memset()
implementations.

Change-Id: I9860cfada1d941b613ebd4da068e9992c387952e
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>

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Merge "chore: update to use Arm word across TF-A" into integration

chore: update to use Arm word across TF-A

Align entire TF-A to use Arm in copyright header.

Change-Id: Ief9992169efdab61d0da6bd8c5180de7a4bc2244
Signed-off-by: Govindraj Raja <govindraj.raja@arm.co

chore: update to use Arm word across TF-A

Align entire TF-A to use Arm in copyright header.

Change-Id: Ief9992169efdab61d0da6bd8c5180de7a4bc2244
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>

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Merge pull request #1528 from antonio-nino-diaz-arm/an/libc

libc: Cleanup library

libc: Introduce cdefs.h, assert.h and strlen.c

Change-Id: I76091d52571f1950111c4b1670d5fc3883607715
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Merge pull request #1510 from robertovargas-arm/romlib

Add support for moving libraries to ROM

Create a library file for libc

TF Makefile was linking all the objects files generated for the
c library instead of creating a static library that could be
used in the linking stage.

Change-Id: I72

Create a library file for libc

TF Makefile was linking all the objects files generated for the
c library instead of creating a static library that could be
used in the linking stage.

Change-Id: I721daea097e9b13cbb42c9f8eaa2af8fea0799cf
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

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