9 Commits

Author SHA1 Message Date
Stephen Neuendorffer
6d0174e706
[libc] allow libc-hdrgen to work on windows files (#87292)
The code does some (overly simple?) checks on file syntax. These checks
assume unix line endings and fail on windows. This commit updates the
code to strip extra whitespace, making the checks more robust,
particularly in the presence of windows line endings.

Fixes #86023
2024-04-01 17:04:29 -07:00
Kazu Hirata
b8f89b84bc Use StringRef::{starts,ends}_with (NFC)
This patch replaces uses of StringRef::{starts,ends}with with
StringRef::{starts,ends}_with for consistency with
std::{string,string_view}::{starts,ends}_with in C++20.

I'm planning to deprecate and eventually remove
StringRef::{starts,ends}with.
2023-12-16 15:02:17 -08:00
Joseph Huber
2a65d0388c [libc] Add support for creating wrapper headers for offloading in clang
This is an alternate approach to the patches proposed in D153897 and
D153794. Rather than exporting a single header that can be included on
the GPU in all circumstances, this patch chooses to instead generate a
separate set of headers that only provides the declarations. This can
then be used by external tooling to set up what's on the GPU. This
leaves room for header hacks for offloading languages without needing to
worry about the `libc` implementation.

Currently this generates a set of headers that only contain the
declarations. These will then be installed to a new clang resource
directory called `llvm_libc_wrappers/` which will house the shim code.
We can then automaticlaly include this from `clang` when offloading to
wrap around the headers while specifying what's on the GPU.

Reviewed By: jdoerfert, JonChesterfield

Differential Revision: https://reviews.llvm.org/D154036
2023-07-07 16:02:33 -05:00
Joseph Huber
6ca6cdb23e Revert "[libc] Add support for creating wrapper headers for offloading in clang"
This reverts commit a4a26374aa11d48ac6bf65c78c2aaf8f16414287.

This was causing some problems with the CPU build and CUDA buildbot.
Revert until I can figure out what those issues are and fix them. I
believe it is just some CMake.
2023-07-06 18:26:41 -05:00
Joseph Huber
a4a26374aa [libc] Add support for creating wrapper headers for offloading in clang
This is an alternate approach to the patches proposed in D153897 and
D153794. Rather than exporting a single header that can be included on
the GPU in all circumstances, this patch chooses to instead generate a
separate set of headers that only provides the declarations. This can
then be used by external tooling to set up what's on the GPU. This
leaves room for header hacks for offloading languages without needing to
worry about the `libc` implementation.

Currently this generates a set of headers that only contain the
declarations. These will then be installed to a new clang resource
directory called `llvm_libc_wrappers/` which will house the shim code.
We can then automaticlaly include this from `clang` when offloading to
wrap around the headers while specifying what's on the GPU.

Reviewed By: jdoerfert, JonChesterfield

Differential Revision: https://reviews.llvm.org/D154036
2023-07-06 18:10:49 -05:00
Michael Jones
f6bf2823c4 [libc] Use entrypoints.txt as the single source of list of functions for a platform.
The function listings in api.td are removed. The same lists are now deduced using the information
in entrypoints.txt.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D89267
2020-10-15 20:46:13 +00:00
Paula Toth
66d00feb18 [libc][NFC] Make all top of file comments consistent.
Summary:
Made all header files consistent based of this documentation: https://llvm.org/docs/CodingStandards.html#file-headers.
And did the same for all source files top of file comments.

Reviewers: sivachandra, abrachet

Reviewed By: sivachandra, abrachet

Subscribers: MaskRay, tschuett, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D77533
2020-04-08 10:18:37 -07:00
Siva Chandra Reddy
b9826408e4 [libc] Fix build after 777180a32b61070a10dd330b4f038bf24e916af1.
Implicit conversion from llvm::StringRef to std::string was made
explicit in the above commit.
2020-01-29 13:32:38 -08:00
Siva Chandra Reddy
b47f9eb55d [libc] Add a TableGen based header generator.
Summary:
* The Python header generator has been removed.
* Docs giving a highlevel overview of the header gen scheme have been
  added.

Reviewers: phosek, abrachet

Subscribers: mgorny, MaskRay, tschuett, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D70197
2019-11-22 13:02:24 -08:00