llvm-project.git/libc/src/__support/HashTable/generic, branch users/nico/python-2

[libc] avoid type-punning with inactive union member (#116685)

2024-11-18T21:04:41+00:00

[libc] Rename libc/src/__support/endian.h to endian_internal.h (#115950)

2024-11-13T18:28:07+00:00

This prevents a conflict with the Linux system endian.h when built in
overlay mode for CPP files in __support.

This issue appeared in PR #106259.

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

2024-07-12T16:28:41+00:00

This is a part of #97655.

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

2024-07-12T07:12:13+00:00

Reverts llvm/llvm-project#98075

bots are broken

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

2024-07-11T19:35:22+00:00

This is a part of #97655.

[libc] add hashtable fuzzing (#87949)

2024-05-02T19:36:10+00:00

[libc] fix -Wmissing-braces (#77345)

2024-01-08T18:18:36+00:00

Fixes the following errors observed on the aarch64 fullbuild:


/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/src/__support/HashTable/generic/bitmask_impl.inc:116:13:
    error: suggest braces around initialization of subobject
    [-Werror,-Wmissing-braces]
return {static_cast(mask_available().word ^
repeat_byte(0x80))};
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{ }
    In file included from

/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/src/search/hdestroy.cpp:10:

/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/src/__support/HashTable/table.h:336:41:
    error: suggest braces around initialization of subobject
    [-Werror,-Wmissing-braces]
      iterator end() const { return {0, 0, {0}, *this}; }
                                            ^
                                            {}

Link:
https://lab.llvm.org/buildbot/#/builders/223/builds/33868/steps/6/logs/stdio
Link: https://github.com/llvm/llvm-project/pull/74506

[libc] [search] improve hsearch robustness (#73896)

2023-12-05T17:06:48+00:00

Following up the discussion at
https://github.com/llvm/llvm-project/pull/73469#discussion_r1409593911
by @nickdesaulniers.

According to FreeBSD implementation
(https://android.googlesource.com/platform/bionic/+/refs/heads/main/libc/upstream-freebsd/lib/libc/stdlib/hcreate.c),
`hsearch` is able to handle the cases where the global table is not
properly initialized. To do this, FreeBSD actually allows hash table to
be dynamically resized. If the global table is uninitialized at the
first call, the table will be initialized with a minimal size; hence
subsequent insertion will be reasonable as the table grows
automatically.

This patch mimic such behaviors. More precisely, this patch introduces:

1. a full table iterator that scans each element in the table,
2. a resize routine that is automatically triggered whenever the load
factor is reached where it iterates the old table and insert the entries
into a new one,
3. more tests that cover the growth of the table.

[libc] fix HashTable warnings and build problems (#74371)

2023-12-04T22:06:57+00:00

According to https://lab.llvm.org/buildbot/#/builders/163/builds/48002,
the generic build on HashTable fails with two major issues with
`werror`:
1. warnings on `error: suggest braces around initialization of
subobject`.
2. `__support/HashTable` tests are built regardless of its entrypoints`

This PR attempts to fix such issues.

[libc] Fix the GPU build for the hashing support (#73799)

2023-11-29T15:04:36+00:00

Summary:
For reasons unknown to me, this function is undefined only on the GPU
build if you use `uintptr_t` but not `uint64_t` directly. This patch
makes an ifdef to use this directly for the GPU build to fix the bots.