[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)

This is a part of #97655.

Revert "[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration" (#98593)

Reverts llvm/llvm-project#98075

bots are broken

[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98075)

This is a part of #97655.

[libc] Mass replace enclosing namespace (#67032)

This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079

[libc] Enable custom logging in LibcTest

This patch mimics the behavior of Google Test and allow users to log custom messages after all flavors of ASSERT_ / EXPECT_.

Reviewed By: sivachandra, lntue

[libc] Enable custom logging in LibcTest

This patch mimics the behavior of Google Test and allow users to log custom messages after all flavors of ASSERT_ / EXPECT_.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D152630

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Revert D152630 "[libc] Enable custom logging in LibcTest"

Failing buildbot https://lab.llvm.org/buildbot/#/builders/73/builds/49707
This reverts commit 9a7b4c934893d6bc571e1ce8efab2127ae5f4e45.

[libc] Enable custom logging in LibcTest

This patch mimics the behavior of Google Test and allow users to log custom messages after all flavors of ASSERT_ / EXPECT_.

Reviewed By: sivachandra, lntue

[libc] Enable custom logging in LibcTest

This patch mimics the behavior of Google Test and allow users to log custom messages after all flavors of ASSERT_ / EXPECT_.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D152630

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[libc][test] Drastically reduce mem test runtime

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D151450

[libc] Make string tests compatible with the Fuchsia build

Some test code was doing loose conversions caught by compiler
warnings in the Fuchsia build. This included duplicated code
in a few tests

[libc] Make string tests compatible with the Fuchsia build

Some test code was doing loose conversions caught by compiler
warnings in the Fuchsia build. This included duplicated code
in a few tests that was reconsolidated with the existing header
file copy of the same functions.

The MemoryMatcher abstraction presumes gtest-style matcher support,
which is not available in Fuchsia's zxtest library. It's avoided
in favor of simpler memory-comparing assertions.

Reviewed By: abrachet

Differential Revision: https://reviews.llvm.org/D146343

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[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.

This part of the effort to make all test related pieces into the `test`
directory. This helps is excluding test related pieces

[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.

This part of the effort to make all test related pieces into the `test`
directory. This helps is excluding test related pieces in a straight
forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move
the MPFR wrapper and testutils into the 'test' directory.

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[libc] Improve testing of mem functions

This patch extracts the testing logic from `op_tests.cpp` into
`memory_check_utils.h` so we can reuse it for mem* function integration
tests.

This makes test

[libc] Improve testing of mem functions

This patch extracts the testing logic from `op_tests.cpp` into
`memory_check_utils.h` so we can reuse it for mem* function integration
tests.

This makes testing consistent and thorough.
For instance this catches a bug that got unnoticed during submission of
D136595 and D135134. Integration test for memcmp was only testing a
single size.

This also leverages ASAN to make sure that data is not read / written
outside permitted boundaries

Differential Revision: https://reviews.llvm.org/D136865

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[libc][NFC] Use ASSERT instead of EXPECT in tests

Revert "[libc] New version of the mem* framework"

This reverts commit https://reviews.llvm.org/D135134 (b3f1d58a131eb546aaf1ac165c77ccb89c40d758)

That revision appears to have broken Arm memcpy in

Revert "[libc] New version of the mem* framework"

This reverts commit https://reviews.llvm.org/D135134 (b3f1d58a131eb546aaf1ac165c77ccb89c40d758)

That revision appears to have broken Arm memcpy in some subtle
ways. Am communicating with the original author to get a
good reproduction.

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[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.

Codegen can be checked here https://godbolt.org/z/chf1Y6eGM

Differential Revision: https://reviews.llvm.org/D135134

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Revert "[libc] New version of the mem* framework"

This reverts commit 9721687835a7df5da0c9482cf684c11b8ba97f75.

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM pla

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.

Codegen can be checked here https://godbolt.org/z/x19zvE59v

Differential Revision: https://reviews.llvm.org/D135134

show more ...

Revert "[libc] New version of the mem* framework"

This reverts commit 98bf836f3127a346a81da5ae3e27246935298de4.

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM pla

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.

Codegen can be checked here https://godbolt.org/z/x19zvE59v

Differential Revision: https://reviews.llvm.org/D135134

show more ...

Revert "[libc] New version of the mem* framework"

This reverts commit d55f2d8ab076298cfd745c05c1b4dfd5583f8b9e.

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM pla

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.

Codegen can be checked here https://godbolt.org/z/x19zvE59v

Differential Revision: https://reviews.llvm.org/D135134

show more ...

Revert "[libc] New version of the mem* framework"

This reverts commit 4c19439d249256db720e323a446e39d05496732f.

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose.
This patch is not meant to be submitted but gives an

[libc] New version of the mem* framework

This version is more composable and also simpler at the expense of being more explicit and more verbose.
This patch is not meant to be submitted but gives an idea of the change.
Codegen can be checked in https://godbolt.org/z/6z1dEoWbs by removing the "static inline" before individual functions.

Unittests are coming.

Suggested review order:
- utils
- op_base
- op_builtin
- op_generic
- op_x86 / op_aarch64
- *_implementations.h

Differential Revision: https://reviews.llvm.org/D135134

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[NFC][libc] Switch mem* tests from ArrayRef to span

Reland [libc][NFC] Use STL case for array

This is a reland of https://reviews.llvm.org/D130773

Revert "[libc][NFC] Use STL case for array"

This reverts commit 7add0e5fdc5c7cb6f59f60cd436bf161cf9f9eb7.