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12 Commits

Author SHA1 Message Date
Schrodinger ZHU Yifan
6cfbf8ccce
[libc] add support for function level attributes (#79891) 
See discussion at
https://discourse.llvm.org/t/rfc-support-function-attributes-in-user-interface/76624

Demo macro:
```c++
#if !defined(__LIBC_CONST_ATTR) && defined(__cplusplus) && defined(__GNUC__)
#if __has_attribute(const)
#define __LIBC_CONST_ATTR [[gnu::const]]
#endif
#endif
#if !defined(__LIBC_CONST_ATTR) && defined(__GNUC__)
#if __has_attribute(const)
#define __LIBC_CONST_ATTR __attribute__((const))
#endif
#endif
#if !defined(__LIBC_CONST_ATTR)
#define __LIBC_CONST_ATTR
#endif
```
 2024-02-15 12:20:53 -05:00
lntue
fbf43b0121
[libc] Only declare float128 math functions in the generated math.h if float128 type is supported. (#81010) 2024-02-08 20:13:27 -05:00
Michael Jones
9b8a64b88d [libc] add noexcept to external function headers 
To improve code generation for C++ code that directly includes our
headers, the external function definitions will now be marked noexcept.
This may not be necessary for the internal definitions since we build
with the -fno-exceptions flag.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D141095
 2023-01-06 11:43:43 -08:00
Siva Chandra Reddy
9b8ca3c1f1 [libc] Add global stdout and stderr objects. 
They are added as entrypoint object targets. The header-gen
infrastructure has been extended to enable handling standard required
global objects. The libc-api-test has also been extended to verify the
global object declarations.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D126329
 2022-05-27 05:43:49 +00:00
Siva Chandra Reddy
59eb542f60 [libc] Let header generator generate the type header inclusion boiler plate. 
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D117855
 2022-01-24 23:25:19 +00:00
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
Siva Chandra Reddy
59f17a7d4f [libc][NFC] Move tablegen indexer class into a util library of its own. 
This class is currently used by two tools: HdrGen and PrototypeTestGen.
We will be adding more tools based on this class so it is convenient to
keep it in a util library of its own.
 2020-07-28 16:35:19 -07:00
Paula Toth
1ab092b758 [libc] Expose APIGenerator. 
Summary: This is split off from D79192 and exposes APIGenerator (renames to APIIndexer) for use in generating the integrations tests.

Reviewers: sivachandra

Reviewed By: sivachandra

Subscribers: tschuett, ecnelises, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D80832
 2020-06-01 12:30:35 -07:00
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
d1536673c6 [libc] Add ability to generate enum types/values to HdrGen. 
A target to generate the std C threads.h file has been added. This
utilizes the new feature added in this change.

Reviewers: phosek

Differential Revision: https://reviews.llvm.org/D75379
 2020-02-28 23:27:32 -08:00
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