Commit Graph

266 Commits

Author SHA1 Message Date
Guillaume Chatelet 699d17d4d6 [libc] Improve memcpy copy loop
Rewriting loop so the terminating condition does not depend on the loop body

Differential Revision: https://reviews.llvm.org/D91976
2020-11-30 08:24:10 +00:00
Cheng Wang a8beb4ada4 [libc] Fix typo in buildbot README.txt.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D90381
2020-11-27 19:01:21 +08:00
Cheng Wang a513be4900 [libc][Obvious] Fix typo in strnlen_test.cpp. 2020-11-27 15:56:19 +08:00
Guillaume Chatelet d899f9970e Fix case mismatch between definition and declaration 2020-11-25 14:23:31 +00:00
Michael Jones 8a4ee3550b [libc] Make more of the libc unit testing llvm independent
(WIP, hopefully I'll add more to this patch before submitting)

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D91665
2020-11-21 00:27:08 +00:00
Michael Jones 3e18fb3390 [libc] Switch functions to using global headers
This switches all of the files in src/string, src/math, and
test/src/math from using relative paths (e.g. `#include “include/string.h”`)
to global paths (e.g. `#include <string.h>`) to make bringing up those
functions on other platforms, such as fuchsia, easier.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D91394
2020-11-21 00:07:17 +00:00
Siva Chandra Reddy 4766a86cf2 [libc] Combine all math differential fuzzers into one target.
Also added diffing of a few more math functions. Combining the diff check
for all of these functions helps us meet the OSS fuzz bar of a minimum of
100 program edges.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91817
2020-11-20 07:46:15 -08:00
Siva Chandra Reddy 892ed1f150 [libc] Add differential fuzzers for ldexp and remquo.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91763
2020-11-19 08:32:05 -08:00
Siva Chandra Reddy 4d8dede5e5 [libc] Fix the overflow check condition of ldexp.
Targeted tests have been added.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91752
2020-11-18 21:35:48 -08:00
Siva Chandra Reddy d1b921e3bf [libc][NFC][Obvious] Remove few unnecessary pieces from ilogb tests. 2020-11-18 11:26:05 -08:00
Siva Chandra Reddy ad0e764ead [libc][obvious] Fix fdim[f|l] signatures in stdc spec. 2020-11-18 07:39:11 -08:00
Siva Chandra Reddy bb8f2585c6 [libc] Add implementations of ldexp[f|l].
The rounding behavior of NormalFloat to float format has been changed
to round to nearest. Also, a bug in NormalFloat to subnormal number
conversion has been fixed.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91591
2020-11-17 15:05:42 -08:00
Michael Jones a200d6cdf0 [libc] make part of libc's unit test framework independent of llvm
This is mostly changing stringref to std::string, outs() to cout,
and small supporting changes. This will make running unit tests possible
on systems that are only grabbing the libc part of llvm.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D91568
2020-11-17 18:43:15 +00:00
Tue Ly d41280467d [libc] Add implementations of fdim[f|l].
Implementing fdim, fdimf, and fdiml for llvm-libc.

Differential Revision: https://reviews.llvm.org/D90906
2020-11-10 18:48:11 -05:00
Siva Chandra Reddy d50149b42e [libc] Extend WrapperGen to emit aliases.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D90985
2020-11-06 16:12:10 -08:00
Siva Chandra Reddy 573ade4bef [libc][WrapperGen] Replace the C _Noreturn annotation with C++ [[noreturn]].
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D90900
2020-11-06 11:37:48 -08:00
Siva Chandra Reddy 930cf1cb9f [libc] Add implementations of ilogb[f|l].
Depends on D90805.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D90806
2020-11-05 16:27:44 -08:00
Siva Chandra Reddy 0e3532da98 [libc][NFC] Make test macros callable from helper methods of test classes.
This is acheived by making the RunContext a state variable of the test
classes.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D90805
2020-11-05 16:14:24 -08:00
Michael Jones 5c801de13c [libc] Fix WrapperGen seeing no arguments as a void argument.
This corrects WrapperGen generating incorrect wrappers for functions
that take no arguments. Previously it would generate a wrapper with a
single argument of type `void`.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D90800
2020-11-05 19:13:37 +00:00
Siva Chandra Reddy 50c2f2b6f0 [libc][NFC][Obvious] Use the new macro to declare special constants in tests. 2020-11-03 15:44:06 -08:00
Michael Jones 5080840d28 [LIBC][NFC] Rename errno and assert files to match other files with functions
Rename the files containing the `__errno_location` function
to `__errno_location.h/cpp` to match the other files and move
the `llvmlibc_errno` macro to its own file.

Split assert.h into `__assert_fail.h` (contains the function prototype)
and assert.h (contains the assert macro).

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D90653
2020-11-03 21:29:32 +00:00
Siva Chandra Reddy e4be4bcf83 [libc][NFC] Use a convenience macro to declare special floating point constants.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D90262
2020-10-27 16:55:16 -07:00
Michael Jones ba24ba7e9c [libc] Add LLVM libc specific functions to llvm_libc_ext.td.
Also moved most of the common type definitions from libc/spec/stdc.td
to libc/spec/spec.td so that they can be used to list functions in llvm_libc_ext.td.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D89436
2020-10-19 18:21:25 +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
Guillaume Chatelet c400e01c62 [libc][NFC] Add probability distributions for memory function sizes
This patch adds memory function size distributions sampled from different applications running in production.
This will be used to benchmark and compare memory functions implementations.

Differential Revision: https://reviews.llvm.org/D89401
2020-10-15 08:15:58 +00:00
Guillaume Chatelet cba533febc Fix conjuntion of -Werror,-Wsuggest-override with google/benchmark 2020-10-14 15:26:55 +00:00
Paula Toth f60686f35c [libc] Update buildbot worker version to 2.8.4.
Tested locally by connecting to LLVM master. (:
http://lab.llvm.org:8011/#/builders/78/builds/1

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D89069
2020-10-08 13:43:53 -07:00
Anthony Steinhauser ef36e8380a [libc] Using llvm_libc memcpy in mem* benchmarks.
Currently the mem* benchmarks use memcpy from Glibc and memset from LLVM libc.
That's misleading and produces inconsistent results and behaviors.

This change makes Memcpy.cpp consistent with Memset.cpp:
https://github.com/llvm/llvm-project/blob/master/libc/benchmarks/Memset.cpp#L49

Reviewers: sivachandra

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D88271
2020-09-24 22:03:52 -07:00
Tue Ly f55963d501 [libc] Add implementation for hypotf
Truncating the sum of squares, and then use shift-and-add algorithm to compute its square root.
Required MPFR testing infra is updated in https://reviews.llvm.org/D87514

Differential Revision: https://reviews.llvm.org/D87516
2020-09-17 23:28:36 -04:00
Guillaume Chatelet c3fd2a50ba [libc] Remove special case for 8 and 16 bytes
They don't seem to gain much in real apps and its better to favor less branches and smaller code.
2020-09-15 20:48:27 +00:00
Guillaume Chatelet c19fda9aa0 [libc] use stddef instead of string header 2020-09-15 20:12:55 +00:00
Guillaume Chatelet 00ba1a3de7 [libc] remove useless headers 2020-09-15 20:04:12 +00:00
Guillaume Chatelet e328456a9e [libc] Add missing TableGen dependency
Differential Revision: https://reviews.llvm.org/D87689
2020-09-15 14:26:04 +00:00
Guillaume Chatelet 00d6e7116c [libc] Add missing LibcFPTestHelpers library
Differential Revision: https://reviews.llvm.org/D87690
2020-09-15 14:25:34 +00:00
Guillaume Chatelet 85763e0758 [libc] Fix typo in platform_defs.h.inc
Differential Revision: https://reviews.llvm.org/D87687
2020-09-15 14:25:01 +00:00
Tue Ly abf1c82dcc [libc] Extend MPFRMatcher to handle 2-input-1-output and support hypot function.
Differential Revision: https://reviews.llvm.org/D87514
2020-09-14 14:53:46 -04:00
cgyurgyik c92d1aa44b [libc] Decouple string functions.
This revision removes dependencies that exist between different string functions. This allows for the libc user to use a specific function X of this library without also depending on Y and Z.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D87421
2020-09-14 12:22:05 -04:00
Siva Chandra Reddy cb19e8c6d1 [libc][obvious] Include Sqrt.h in SqrtLongDoubleX86.h.
This makes SqrtLongDoubleX86.h includable by itself.
2020-09-10 13:25:54 -07:00
Siva Chandra Reddy 878cb5170d [libc][NFC][obvious] Remove a redudant dep of strcmp implementation. 2020-09-10 12:34:32 -07:00
Siva Chandra Reddy fb542b0b8c [libc][MPFRWrapper] Provide a way to include MPFR header in downstream repos.
Reviewed By: asteinhauser

Differential Revision: https://reviews.llvm.org/D87412
2020-09-09 12:58:58 -07:00
Siva Chandra Reddy ba5b1371ec [libc][NFC] Add spec files as dependencies of integration test. 2020-09-09 10:22:27 -07:00
Siva Chandra Reddy e59d829971 [libc][obvious] Fix strtok_r signature in the spec. 2020-09-09 09:50:17 -07:00
Siva Chandra Reddy 17ac4543d4 [libc][obvious] Use constants of type double in remquo_test. 2020-09-03 22:26:25 -07:00
Siva Chandra Reddy 8514ecb02d [libc] Add implementations of remquo[f|l] and remainder[f|l].
The implementation is not fully standards compliant in the sense that
errno is not set on error, and floating point exceptions are not raised.

Subnormal range and normal range are tested separately in the tests.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86666
2020-09-03 22:00:17 -07:00
Pavel Labath 9cb222e749 [cmake] Make gtest include directories a part of the library interface
This applies the same fix that D84748 did for macro definitions.
Appropriate include path is now automatically set for all libraries
which link against gtest targets, which avoids the need to set
include_directories in various parts of the project.

Differential Revision: https://reviews.llvm.org/D86616
2020-08-27 15:35:57 +02:00
Tue Ly 5078825aa9 [libc] Add implementations for sqrt, sqrtf, and sqrtl.
Differential Revision: https://reviews.llvm.org/D84726
2020-08-26 09:46:18 -04:00
Siva Chandra Reddy fe44992b79 [libc][NFC] For remquo quotient, compare only 3 bits of MPFR and libc results. 2020-08-25 23:42:06 -07:00
Siva Chandra Reddy 1948acb61b [libc][obvious] Add back the accidentally removed MPFRNumber destructor. 2020-08-25 21:57:46 -07:00
Siva Chandra Reddy 3f4674a557 [libc] Extend MPFRMatcher to handle multiple-input-multiple-output functions.
Tests for frexp[f|l] now use the new capability. Not all input-output
combinations have been addressed by this change. Support for newer combinations
can be added in future as needed.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86506
2020-08-25 21:42:49 -07:00
Siva Chandra Reddy 87bf0b0ee9 [libc] Add a class called NormalFloat which represents normalized floats.
This class helps in dealing with normal and subnormal numbers uniformly.
Moreover, since this class has been designed to handle all floating
formats across platforms, it helps implement floating point functions in
a uniform manner.

The implementations of frexp and logb have been switched to use this new
class as it allows us to use just one implementation across all
different floating point formats.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86241
2020-08-20 09:00:35 -07:00