Hi all,
This is a small change to ivopts to expand SSA variables enabling ivopts to
correctly work out when an address IV step is set to be a multiple on index
step in the loop header (ie, not constant, not calculated each loop.)
Seems like this might have compile speed costs that need to be cons
Thanks for the pointer Joseph.
This update adds tests to gcc/testsuite/g++.dg/warn/Wformat-gcc_diag-1.C
as this seems to be where similar tests are done (eg, %D for tree).
I couldn't find any tests for the actual output of string slice debug
statements for the other format specifiers so haven't i
Minor update to this patch addressing Jeff Law's feedback.
It turns out I ended up not using the strcmp function, so no edits to other
patches are required. I've left the function in as I have future work that I
plan to use it for.
Regression tested and bootstrapped for aarch64-none-linux-gnu
and
On 17/06/2025 14:37, Jeff Law wrote:
On 6/12/25 10:53 AM, Alfie Richards wrote:
The string_slice inherits from array_slice and is used to refer to a
substring of an array that is memory managed elsewhere without modifying
the underlying array.
For example, this is useful in cases such as
Add logic for the case of two FMV annotated functions with identical
signature other than the return type.
Previously this was ignored, this changes the behavior to emit a diagnostic.
gcc/cp/ChangeLog:
PR c++/119498
* decl.cc (duplicate_decls): Change logic to not always exclude F
Adds an optimisation in FMV to redirect to a specific target if possible.
A call is redirected to a specific target if both:
- the caller can always call the callee version
- and, it is possible to rule out all higher priority versions of the callee
fmv set. That is estabilished either by the ca
This commit introduces support for the target_version attribute in the c
frontend, following the behavior defined in the Arm C Language Extension.
Key changes include:
- During pushdecl, the compiler now checks whether the current symbol is
part of a multiversioned set.
- New versions are add
Adds some aarch64 C fmv diagnostic tests.
This mostly tests C front end code, but has to be target specific at FMV
is requires specifying target extensions.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/mv-and-mvc-error1.c: New test.
* gcc.target/aarch64/mv-and-mvc-error2.c: New
This change refactors FMV handling in the frontend to allows greater
reasoning about versions in shared code.
This is needed for allowing target_clones and target_versions to be used
together in a function set, as there is then two distinct concerns when
encountering two declarations that previous
This patch removes the warning for target_version and target_clones in aarch64
as it is now spec compliant.
gcc/ChangeLog:
* config/aarch64/aarch64.cc (aarch64_process_target_version_attr):
Remove warning.
* config/aarch64/aarch64.opt: Mark -Wno-experimental-fmv-target
Add tests covering many FMV errors for Aarch64, including
redeclaration, and mixing target_clones and target_versions.
gcc/testsuite/ChangeLog:
* g++.target/aarch64/mv-and-mvc-error1.C: New test.
* g++.target/aarch64/mv-and-mvc-error2.C: New test.
* g++.target/aarch64/mv-a
This patch changes the semantics of target_version and target_clones attributes
to match the behavior described in the Arm C Language extension.
The changes to behavior are:
- The scope and signature of an FMV function set is now that of the default
version.
- The FMV resolver is now created at
Adds the target_version and target_clones attributes to diagnostic messages
for target_version semantics.
This is because the target_version/target_clones attributes affect the identity
of the decls, so need to be represented in diagnostics for them.
After this change diagnostics look like:
```
Note: Approved by Jeff Law, waiting on string_slice.
-- >8 --
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get the target_version str
Note: Approved by Jeff Law, waiting on string_slice.
-- >8 --
This is similar to clone_function_name and its siblings but takes an
identifier tree node rather than a function declaration.
This is to be used in conjunction with the identifier node stored in
cgraph_function_version_info::assembler
Add support for a FMV set defined by a combination of target_clones and
target_version definitions.
Additionally, change is_function_default_version to consider a function
declaration annotated with target_clones containing default to be a
default version.
Lastly, add support for the case that a
This patch introduces the TARGET_REJECT_FUNCTION_CLONE_VERSION hook
which is used to determine if a target_clones version string parses.
If true is returned, a warning is emitted and from then on the version
is ignored.
This is as specified in the Arm C Language Extension. The purpose of this
is
This patch is an overhaul of how FMV name mangling works. Previously
mangling logic was duplicated in several places across both target
specific and independent code. This patch changes this such that all
mangling is done in targetm.mangle_decl_assembler_name (including for the
dispatched symbol an
This is a quick refactor of the riscv target processing code
to take a string_slice rather than a decl.
The reason for this is to enable it to work with target_clones
where merging logic requires reasoning about each version string
individually in the front end.
This refactor primarily serves jus
Previously, the `record` argument in maybe_version_function allowed the
call to cgraph_node::record_function_versions to be skipped. However,
this was only skipped when both decls were already marked as versioned,
in which case we trigger the early exit in record_function_versions
instead. Therefo
Note: Approved by Jeff Law, waiting on string_slice.
-- >8 --
gcc/ChangeLog:
* attribs.cc (make_attribute): Change arguments.
* attribs.h (make_attribute): Change arguments.
Approved by Richard Sandiford.
---
gcc/attribs.cc | 16 +---
gcc/attribs.h | 2 +-
2 files
Note: Approved by Jeff Law, waiting on patches that make use of these.
-- >8 --
These are needed to correctly mangle FMV declarations.
gcc/ChangeLog:
* cgraph.h (struct cgraph_node): Add dispatcher_resolver_function and
is_target_clone.
---
gcc/cgraph.h | 10 +-
1 file
The string_slice inherits from array_slice and is used to refer to a
substring of an array that is memory managed elsewhere without modifying
the underlying array.
For example, this is useful in cases such as when needing to refer to a
substring of an attribute in the syntax tree.
Adds some minim
. Approved patches have been noted as
such.
Regression tested and bootstrapped for aarch64-none-linux-gnu
and x86_64-unknown-linux-gnu.
Cross compiled and checked FMV tests for riscv and powerpc.
Kind regards,
Alfie Richards
Change log
==
V6:
- Merged "Add assembler_na
On 04/06/2025 15:59, Jeff Law wrote:
On 5/29/25 6:46 AM, Alfie Richards wrote:
Add the assembler_name member to cgraph_function_version_info to store
the base assembler name of the funciton set, before FMV mangling. This is
Just a typo in the patch description. Should be "function&qu
Hello Segher,
My sincere appologies for this.
I am fairly new to GCC development, and misremembered the rules/process
for minor patches.
Thank you for correcting my mistake, it won't happen again.
Kind regards,
Alfie Richards
On 10/06/2025 21:40, Segher Boessenkool wrote:
On Wed, J
On 5/29/25 6:46 AM, Alfie Richards wrote:
Renames record_function_versions to add_function_version, and make it
explicit that it is adding a single version to the function structure.
Additionally, change the insertion point to always maintain priority
ordering
of the versions.
This allows
On 04/06/2025 15:57, Jeff Law wrote:
On 5/29/25 6:46 AM, Alfie Richards wrote:
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get
Hi,
This fixes the FMV powerpc tests I recently committed, and hopefully makes them
work on a wider range of target configurations.
I plan to commit this on Monday if no one has any objections.
Thanks,
Alfie
--- >8 ---
As discussed on the BZ page, this removes the tests on the symbols in the
r
On 02/06/2025 11:06, Spencer Abson wrote:
This patch introduces expanders for FP<-FP conversions that levarage
partial vector modes. We also extend the INT<-FP and FP<-INT conversions
using the same approach.
The ACLE enables vectorized conversions like the following:
fcvt z0.h, p7/m, z1.s
Mo
This commit introduces support for the target_version attribute in the c
frontend, following the behavior defined in the Arm C Language Extension.
Key changes include:
- During pushdecl, the compiler now checks whether the current symbol is
part of a multiversioned set.
- New versions are add
Add tests covering many FMV errors for Aarch64, including
redeclaration, and mixing target_clones and target_versions.
gcc/testsuite/ChangeLog:
* g++.target/aarch64/mv-and-mvc-error1.C: New test.
* g++.target/aarch64/mv-and-mvc-error2.C: New test.
* g++.target/aarch64/mv-a
This patch removes the warning for target_version and target_clones in aarch64
as it is now spec compliant.
gcc/ChangeLog:
* config/aarch64/aarch64.cc (aarch64_process_target_version_attr):
Remove warning.
* config/aarch64/aarch64.opt: Mark -Wno-experimental-fmv-target
This patch is an overhaul of how FMV name mangling works. Previously
mangling logic was duplicated in several places across both target
specific and independent code. This patch changes this such that all
mangling is done in targetm.mangle_decl_assembler_name (including for the
dispatched symbol an
Add logic for the case of two FMV annotated functions with identical
signature other than the return type.
Previously this was ignored, this changes the behavior to emit a diagnostic.
gcc/cp/ChangeLog:
PR c++/119498
* decl.cc (duplicate_decls): Change logic to not always exclude F
Adds an optimisation in FMV to redirect to a specific target if possible.
A call is redirected to a specific target if both:
- the caller can always call the callee version
- and, it is possible to rule out all higher priority versions of the callee
fmv set. That is estabilished either by the ca
These are needed to correctly mangle FMV declarations.
gcc/ChangeLog:
* cgraph.h (struct cgraph_node): Add dispatcher_resolver_function and
is_target_clone.
---
gcc/cgraph.h | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/gcc/cgraph.h b/gcc/cgraph.h
Adds the target_version and target_clones attributes to diagnostic messages
for target_version semantics.
This is because the target_version/target_clones attributes affect the identity
of the decls, so need to be represented in diagnostics for them.
After this change diagnostics look like:
```
Adds some aarch64 C fmv diagnostic tests.
This mostly tests C front end code, but has to be target specific at FMV
is requires specifying target extensions.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/mv-and-mvc-error1.c: New test.
* gcc.target/aarch64/mv-and-mvc-error2.c: New
Add the assembler_name member to cgraph_function_version_info to store
the base assembler name of the funciton set, before FMV mangling. This is
used in later patches for refactoring FMV mangling.
gcc/ChangeLog:
* cgraph.cc (cgraph_node::insert_new_function_version): Record
assemb
This patch introduces the TARGET_REJECT_FUNCTION_CLONE_VERSION hook
which is used to determine if a target_clones version string parses.
If true is returned, a warning is emitted and from then on the version
is ignored.
This is as specified in the Arm C Language Extension. The purpose of this
is
This change refactors FMV handling in the frontend to allows greater
reasoning about versions in shared code.
This is needed for allowing target_clones and target_versions to be used
together in a function set, as there is then two distinct concerns when
encountering two declarations that previous
Renames record_function_versions to add_function_version, and make it
explicit that it is adding a single version to the function structure.
Additionally, change the insertion point to always maintain priority ordering
of the versions.
This allows for removing logic for moving the default to the
This is similar to clone_function_name and its siblings but takes an
identifier tree node rather than a function declaration.
This is to be used in conjunction with the identifier node stored in
cgraph_function_version_info::assembler_name to mangle FMV functions in
later patches.
gcc/ChangeLog:
Add support for a FMV set defined by a combination of target_clones and
target_version definitions.
Additionally, change is_function_default_version to consider a function
declaration annotated with target_clones containing default to be a
default version.
Lastly, add support for the case that a
This patch changes the semantics of target_version and target_clones attributes
to match the behavior described in the Arm C Language extension.
The changes to behavior are:
- The scope and signature of an FMV function set is now that of the default
version.
- The FMV resolver is now created at
Notably this respects target_version semantics where an unannotated
function can be the default version.
gcc/ChangeLog:
* attribs.cc (is_function_default_version): Add target_version logic.
Approved by Richard Sandiford.
---
gcc/attribs.cc | 27 ---
1 file change
This is a quick refactor of the riscv target processing code
to take a string_slice rather than a decl.
The reason for this is to enable it to work with target_clones
where merging logic requires reasoning about each version string
individually in the front end.
This refactor primarily serves jus
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get the target_version string
from a decl.
gcc/c-family/ChangeLog:
* c-attribs.c
gcc/ChangeLog:
* attribs.cc (make_attribute): Change arguments.
* attribs.h (make_attribute): Change arguments.
Approved by Richard Sandiford.
---
gcc/attribs.cc | 16 +---
gcc/attribs.h | 2 +-
2 files changed, 6 insertions(+), 12 deletions(-)
diff --git a/gcc/att
The string_slice inherits from array_slice and is used to refer to a
substring of an array that is memory managed elsewhere without modifying
the underlying array.
For example, this is useful in cases such as when needing to refer to a
substring of an attribute in the syntax tree.
Adds some minim
Previously, the `record` argument in maybe_version_function allowed the
call to cgraph_node::record_function_versions to be skipped. However,
this was only skipped when both decls were already marked as versioned,
in which case we trigger the early exit in record_function_versions
instead. Therefo
-authored-by: Alfie Richards
---
gcc/testsuite/g++.target/i386/mv-symbols1.C | 68
gcc/testsuite/g++.target/i386/mv-symbols2.C | 56
gcc/testsuite/g++.target/i386/mv-symbols3.C | 44 +
gcc/testsuite/g++.target/i386/mv-symbols4.C | 50
inlining
optimization patch. It proved keeping 3 patch series in sync was more bother
than it was worth.
Kind regards,
Alfie Richards
Change log
==
V5:
- Merged patch series with C support series, and FMV call inlining optimization
- Addressed Jason's feedback and simplified the diagno
.C: New test.
* g++.target/powerpc/mvc-symbols4.C: New test.
Co-authored-by: Alfie Richards
---
.../g++.target/powerpc/mvc-symbols1.C | 47 +++
.../g++.target/powerpc/mvc-symbols2.C | 35 ++
.../g++.target/powerpc/mvc-symbols3.C | 41
These are needed to correctly mangle FMV declarations.
gcc/ChangeLog:
* cgraph.h (struct cgraph_node): Add dispatcher_resolver_function and
is_target_clone.
---
gcc/cgraph.h | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/gcc/cgraph.h b/gcc/cgraph.h
This patch removes the warning for target_version and target_clones
in aarch64 as it is now spec compliant.
gcc/ChangeLog:
* config/aarch64/aarch64.cc (aarch64_process_target_version_attr):
Remove warning.
* config/aarch64/aarch64.opt: Mark -Wno-experimental-fmv-target
Add logic for the case of two FMV annotated functions with identical
signature other than the return type.
Previously this was ignored, this changes the behavior to emit a diagnostic.
gcc/cp/ChangeLog:
PR c++/119498
* decl.cc (duplicate_decls): Change logic to not always exclude F
This patch changes the semantics of target_version and target_clones attributes
to match the behavior described in the Arm C Language extension.
The changes to behavior are:
- The scope and signature of an FMV function set is now that of the default
version.
- The FMV resolver is now created at
This patch is an overhaul of how FMV name mangling works. Previously
mangling logic was duplicated in several places across both target
specific and independent code. This patch changes this such that all
mangling is done in targetm.mangle_decl_assembler_name (including for the
dispatched symbol an
Add tests covering many FMV errors for Aarch64, including
redeclaration, and mixing target_clones and target_versions.
gcc/testsuite/ChangeLog:
* g++.target/aarch64/mv-and-mvc-error1.C: New test.
* g++.target/aarch64/mv-and-mvc-error2.C: New test.
* g++.target/aarch64/mv-a
Add support for a FMV set defined by a combination of target_clones and
target_version definitions.
Additionally, change is_function_default_version to consider a function
declaration annotated with target_clones containing default to be a
default version.
Lastly, add support for the case that a
This is similar to clone_function_name and its siblings but takes an
identifier tree node rather than a function declaration.
This is to be used in conjunction with the identifier node stored in
cgraph_function_version_info::assembler_name to mangle FMV functions in
later patches.
gcc/ChangeLog:
Notably this respects target_version semantics where an unannotated
function can be the default version.
gcc/ChangeLog:
* attribs.cc (is_function_default_version): Add target_version logic.
Approved by Richard Sandiford.
---
gcc/attribs.cc | 27 ---
1 file change
Add the assembler_name member to cgraph_function_version_info to store
the base assembler name of the funciton set, before FMV mangling. This is
used in later patches for refactoring FMV mangling.
gcc/ChangeLog:
* cgraph.cc (cgraph_node::insert_new_function_version): Record
assemb
This change refactors FMV handling in the frontend to allows greater
reasoning about versions in shared code.
This is needed for allowing target_clones and target_versions to be used
together in a function set, as there is then two distinct concerns when
encountering two declarations that previous
This is a quick refactor of the riscv target processing code
to take a string_slice rather than a decl.
The reason for this is to enable it to work with target_clones
where merging logic requires reasoning about each version string
individually in the front end.
This refactor primarily serves jus
gcc/ChangeLog:
* attribs.cc (make_attribute): Change arguments.
* attribs.h (make_attribute): Change arguments.
Approved by Richard Sandiford.
---
gcc/attribs.cc | 16 +---
gcc/attribs.h | 2 +-
2 files changed, 6 insertions(+), 12 deletions(-)
diff --git a/gcc/att
This patch introduces the TARGET_REJECT_FUNCTION_CLONE_VERSION hook
which is used to determine if a target_clones version string parses.
If true is returned, a warning is emitted and from then on the version
is ignored.
This is as specified in the Arm C Language Extension. The purpose of this
is
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get the target_version string
from a decl.
gcc/c-family/ChangeLog:
* c-attribs.c
Renames record_function_versions to add_function_version, and make it
explicit that it is adding a single version to the function structure.
Additionally, change the insertion point to always maintain priority ordering
of the versions.
This allows for removing logic for moving the default to the
-authored-by: Alfie Richards
---
gcc/testsuite/g++.target/i386/mv-symbols1.C | 68
gcc/testsuite/g++.target/i386/mv-symbols2.C | 56
gcc/testsuite/g++.target/i386/mv-symbols3.C | 44 +
gcc/testsuite/g++.target/i386/mv-symbols4.C | 50
.C: New test.
* g++.target/powerpc/mvc-symbols4.C: New test.
Co-authored-by: Alfie Richards
---
.../g++.target/powerpc/mvc-symbols1.C | 47 +++
.../g++.target/powerpc/mvc-symbols2.C | 35 ++
.../g++.target/powerpc/mvc-symbols3.C | 41
Previously, the `record` argument in maybe_version_function allowed the
call to cgraph_node::record_function_versions to be skipped. However,
this was only skipped when both decls were already marked as versioned,
in which case we trigger the early exit in record_function_versions
instead. Therefo
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get the target_version string
from a decl.
gcc/c-family/ChangeLog:
* c-attribs.c
The string_slice inherits from array_slice and is used to refer to a
substring of an array that is memory managed elsewhere without modifying
the underlying array.
For example, this is useful in cases such as when needing to refer to a
substring of an attribute in the syntax tree.
Adds some minim
/pipermail/gcc-patches/2025-February/674973.html
- Initial
Alfie Richards (18):
Add string_slice class.
Remove unnecessary `record` argument from maybe_version_functions.
Update is_function_default_version to work with target_version (Approved).
Refactor record_function_versions.
Change
On 28/05/2025 03:36, Jeff Law wrote:
On 5/27/25 2:36 AM, Alfie Richards wrote:
Hi Jeff,
On 22/05/2025 21:02, Jeff Law wrote:
On 5/22/25 9:05 AM, Alfie Richards wrote:
Hi Jeff,
I sent this patch with my implementation a while ago:
https://gcc.gnu.org/pipermail/gcc-patches/2025-April
Hi Jeff,
On 22/05/2025 21:02, Jeff Law wrote:
On 5/22/25 9:05 AM, Alfie Richards wrote:
Hi Jeff,
I sent this patch with my implementation a while ago:
https://gcc.gnu.org/pipermail/gcc-patches/2025-April/681043.html
There hasn't been any feedback on that patch yet.
These patches are
on as it is a bit stronger, but it
also requires my larger FMV series to be approved first.
Thanks,
Alfie
On 22/05/2025 04:30, Jeff Law wrote:
On 4/14/25 5:34 AM, Yangyu Chen wrote:
On 14 Apr 2025, at 19:06, Alfie Richards wrote:
Hi Yangyu,
This looks great with what we discussed previ
On 20/05/2025 03:28, Jason Merrill wrote:
On 4/15/25 6:31 AM, Alfie Richards wrote:
This change refactors FMV handling in the frontend to allows greater
reasoning about versions in shared code.
Looking at the cp/ changes:
diff --git a/gcc/cp/class.cc b/gcc/cp/class.cc
index c28d9e5b3ab
Hi all,
Ping for this main patch series.
Alfie
On 15/04/2025 11:31, Alfie Richards wrote:
Hi all,
Another update to this series.
This patch changes the version info structure to be sorted by
priority. This allows easier reasoning for optimisations and prevents having to
calculate the
On 06/05/2025 09:36, Yangyu Chen wrote:
On 6 May 2025, at 16:01, Alfie Richards wrote:
Hello,
I like this idea. I have a couple thoughts to add.
On 05/05/2025 09:46, Yangyu Chen wrote:
On 5 May 2025, at 16:34, Kyrylo Tkachov wrote:
On 4 May 2025, at 19:19, Yangyu Chen wrote:
Hi
rch=+v
bar(int, char) |arch=+zba,+zbb
file.C:baz(char) |arch=+zba,+zbb#arch=+v
namespace::qux |arch=+v
```
Thanks,
Alfie Richards
Thanks,
Yangyu Chen
The primary objective of this patch series is to provide a
user-friendly way to specify target_clones attributes without
modifying the sou
Hi all,
Ping for this patch series.
There are a handful of other patches that are dependant on this series
so I am keen to start getting this reviewed.
Kind regards,
Alfie
On 15/04/2025 11:31, Alfie Richards wrote:
Hi all,
Another update to this series.
This patch changes the version
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get the target_version string
from a decl.
gcc/c-family/ChangeLog:
* c-attribs.c
This change refactors FMV handling in the frontend to allows greater
reasoning about versions in shared code.
This is needed for allowing target_clones and target_versions to be used
together in a function set, as there is then two distinct concerns when
encountering two declarations that previous
Add logic for the case of two FMV annotated functions with identical
signature other than the return type.
Previously this was ignored, this changes the behavior to emit a diagnostic.
gcc/cp/ChangeLog:
PR c++/119498
* decl.cc (duplicate_decls): Change logic to not always exclude F
These are needed to correctly mangle FMV declarations.
gcc/ChangeLog:
* cgraph.h (struct cgraph_node): Add dispatcher_resolver_function and
is_target_clone.
---
gcc/cgraph.h | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/gcc/cgraph.h b/gcc/cgraph.h
This patch changes the semantics of target_version and target_clones attributes
to match the behavior described in the Arm C Language extension.
The changes to behavior are:
- The scope and signature of an FMV function set is now that of the default
version.
- The FMV resolver is now created at
This patch introduces the TARGET_REJECT_FUNCTION_CLONE_VERSION hook
which is used to determine if a target_clones version string parses.
If true is returned, a warning is emitted and from then on the version
is ignored.
This is as specified in the Arm C Language Extension. The purpose of this
is
This is a reimplementation of get_target_clone_attr_len,
get_attr_str, and separate_attrs using string_slice and auto_vec to make
memory management and use simpler.
Adds get_target_version helper function to get the target_version string
from a decl.
gcc/c-family/ChangeLog:
* c-attribs.c
Renames record_function_versions to add_function_version, and make it
explicit that it is adding a single version to the function structure.
Additionally, change the insertion point to always maintain priority ordering
of the versions.
This allows for removing logic for moving the default to the
The string_slice inherits from array_slice and is used to refer to a
substring of an array that is memory managed elsewhere without modifying
the underlying array.
For example, this is useful in cases such as when needing to refer to a
substring of an attribute in the syntax tree.
Adds some minim
This patch is an overhaul of how FMV name mangling works. Previously
mangling logic was duplicated in several places across both target
specific and independent code. This patch changes this such that all
mangling is done in targetm.mangle_decl_assembler_name (including for the
dispatched symbol an
This is similar to clone_function_name and its siblings but takes an
identifier tree node rather than a function declaration.
This is to be used in conjunction with the identifier node stored in
cgraph_function_version_info::assembler_name to mangle FMV functions in
later patches.
gcc/ChangeLog:
Add tests covering many FMV errors for Aarch64, including
redeclaration, and mixing target_clones and target_versions.
gcc/testsuite/ChangeLog:
* g++.target/aarch64/mv-and-mvc-error1.C: New test.
* g++.target/aarch64/mv-and-mvc-error2.C: New test.
* g++.target/aarch64/mv-a
This patch removes the warning for target_version and target_clones
in aarch64 as it is now spec compliant.
gcc/ChangeLog:
* config/aarch64/aarch64.cc (aarch64_process_target_version_attr):
Remove warning.
* config/aarch64/aarch64.opt: Mark -Wno-experimental-fmv-target
Previously, the `record` argument in maybe_version_function allowed the
call to cgraph_node::record_function_versions to be skipped. However,
this was only skipped when both decls were already marked as versioned,
in which case we trigger the early exit in record_function_versions
instead. Therefo
Add support for a FMV set defined by a combination of target_clones and
target_version definitions.
Additionally, change is_function_default_version to consider a function
declaration annotated with target_clones containing default to be a
default version.
Lastly, add support for the case that a
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