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# e42021d5 23-Nov-2020 Ben Dunbobbin <[email protected]>

[Clang][-fvisibility-from-dllstorageclass] Set DSO Locality from final visibility

Ensure that the DSO Locality of the globals in the IR is derived from
their final visibility when using -fvisibility

[Clang][-fvisibility-from-dllstorageclass] Set DSO Locality from final visibility

Ensure that the DSO Locality of the globals in the IR is derived from
their final visibility when using -fvisibility-from-dllstorageclass.

To accomplish this we reset the DSO locality of globals (before
setting their visibility from their dllstorageclass) at the end of
IRGen in Clang. This removes any effects that visibility options or
annotations may have had on the DSO locality.

The resulting DSO locality of the globals will be pessimistic
w.r.t. to the normal compiler IRGen.

Differential Revision: https://reviews.llvm.org/D91779

show more ...


# 7ad6010f 03-Nov-2020 Ben Dunbobbin <[email protected]>

Fix - [Clang] Add the ability to map DLL storage class to visibility

415f7ee883 had a silly typo introduced when I inlined some
code into a loop from its own function.

Original commit message:

For

Fix - [Clang] Add the ability to map DLL storage class to visibility

415f7ee883 had a silly typo introduced when I inlined some
code into a loop from its own function.

Original commit message:

For PlayStation we offer source code compatibility with
Microsoft's dllimport/export annotations; however, our file
format is based on ELF.

To support this we translate from DLL storage class to ELF
visibility at the end of codegen in Clang.

Other toolchains have used similar strategies (e.g. see the
documentation for this ARM toolchain:

https://developer.arm.com/documentation/dui0530/i/migrating-from-rvct-v3-1-to-rvct-v4-0/changes-to-symbol-visibility-between-rvct-v3-1-and-rvct-v4-0)

This patch adds the ability to perform this translation. Options
are provided to support customizing the mapping behaviour.

Differential Revision: https://reviews.llvm.org/D89970

show more ...


# ae9231ca 02-Nov-2020 Ben Dunbobbin <[email protected]>

Reland - [Clang] Add the ability to map DLL storage class to visibility

415f7ee883 had LIT test failures on any build where the clang executable
was not called "clang". I have adjusted the LIT CHECK

Reland - [Clang] Add the ability to map DLL storage class to visibility

415f7ee883 had LIT test failures on any build where the clang executable
was not called "clang". I have adjusted the LIT CHECKs to remove the
binary name to fix this.

Original commit message:

For PlayStation we offer source code compatibility with
Microsoft's dllimport/export annotations; however, our file
format is based on ELF.

To support this we translate from DLL storage class to ELF
visibility at the end of codegen in Clang.

Other toolchains have used similar strategies (e.g. see the
documentation for this ARM toolchain:

https://developer.arm.com/documentation/dui0530/i/migrating-from-rvct-v3-1-to-rvct-v4-0/changes-to-symbol-visibility-between-rvct-v3-1-and-rvct-v4-0)

This patch adds the ability to perform this translation. Options
are provided to support customizing the mapping behaviour.

Differential Revision: https://reviews.llvm.org/D89970

show more ...


# 415f7ee8 02-Nov-2020 Ben Dunbobbin <[email protected]>

[Clang] Add the ability to map DLL storage class to visibility

For PlayStation we offer source code compatibility with
Microsoft's dllimport/export annotations; however, our file
format is based on

[Clang] Add the ability to map DLL storage class to visibility

For PlayStation we offer source code compatibility with
Microsoft's dllimport/export annotations; however, our file
format is based on ELF.

To support this we translate from DLL storage class to ELF
visibility at the end of codegen in Clang.

Other toolchains have used similar strategies (e.g. see the
documentation for this ARM toolchain:

https://developer.arm.com/documentation/dui0530/i/migrating-from-rvct-v3-1-to-rvct-v4-0/changes-to-symbol-visibility-between-rvct-v3-1-and-rvct-v4-0)

This patch adds the ability to perform this translation. Options
are provided to support customizing the mapping behaviour.

Differential Revision: https://reviews.llvm.org/D89970

show more ...