Commit Graph

530 Commits

Author SHA1 Message Date
Guillaume Chatelet ad82fe7b28 [libc] Add rep;movsb as an accelerator under x86 2021-10-08 14:31:55 +00:00
Guillaume Chatelet f256c39541 [libc] ifdef guard element architecture implementations 2021-10-08 14:25:26 +00:00
Guillaume Chatelet d01ae990e1 Revert "[libc] Add rep;movsb as an accelerator under x86"
This reverts commit 1c7160300d.
2021-10-08 13:44:37 +00:00
Guillaume Chatelet 1c7160300d [libc] Add rep;movsb as an accelerator under x86 2021-10-08 13:34:59 +00:00
Michael Jones 6f80339b18 [libc][NFC] Add supporting class for atof implementation
This change adds the High Precision Decimal described here:
https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
It will be used for the atof implementation later, but is complete and
tested now.

The code is inspired by the golang implmentation of the HPD class, which
can be found here: https://github.com/golang/go/blob/release-branch.go1.16/src/strconv/decimal.go

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D110454
2021-10-04 21:08:02 +00:00
Guillaume Chatelet adc18ad6ac [libc] move benchmark function registration to a different file 2021-09-30 13:11:33 +00:00
Michael Jones b62d72f3c5 [libc] Add support for 128 bit ints in limits.h
Also, this adds unit tests to check that limits.h complies with the C
standard.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D110643
2021-09-28 23:50:16 +00:00
Siva Chandra Reddy 8379fc4a53 [libc] Add implementations of the C standard condition variable functions.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D108948
2021-09-28 21:18:45 +00:00
Siva Chandra Reddy 5c3c716bb1 [libc] Add FE_DFL_ENV and handle it in fesetenv.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D110611
2021-09-28 18:09:52 +00:00
Michael Jones 43c543aab7 [libc][NFC] Make strchr and strrchr more consistent
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D110581
2021-09-28 17:42:03 +00:00
Siva Chandra Reddy 5eb6b82729 [libc] Add an implementation of qsort.
A fuzzer for qsort has also been added.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D110382
2021-09-24 19:22:45 +00:00
Andre Vieira 8b87c3d573 [libc] Add optimized memset for AArch64
Differential Revision: https://reviews.llvm.org/D107848
2021-09-23 09:19:47 +01:00
Siva Chandra Reddy 32a5007865 [libc] Add an implementation of bsearch.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D110222
2021-09-22 16:37:03 +00:00
Siva Chandra Reddy f5b8f1247c [libc][obvious] Add inttypes.h and stdlib.h as deps to *div functions. 2021-09-20 05:54:32 +00:00
Siva Chandra Reddy 5252aa2981 [libc][obvious] Make *abs and *div functions buildable in default mode. 2021-09-20 05:44:49 +00:00
Siva Chandra Reddy 74670e79b0 [libc] Add implementations of div, ldiv, lldiv and imaxdiv.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D109952
2021-09-20 04:51:42 +00:00
Cheng Wang 3582828748 [libc][Obvious] Some clean work with memmove. 2021-09-14 17:30:37 +08:00
Guillaume Chatelet cc84ce9129 Revert "[libc] Some clean work with memmove."
This reverts commit b659b789c0.
2021-09-13 14:32:08 +00:00
Siva Chandra Reddy 0da5ac1a75 [libc] Add extension functions fedisableexcept, feenableexcept and fegetexcept.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D109613
2021-09-10 18:44:53 +00:00
Cheng Wang 2fc1913505 [libc] Check signs instead of values in memcmp unittests.
The C standard only guarantees the sign of return value. The exact return
value is implementation defined.

Reviewed By: gchatelet

Differential Revision: https://reviews.llvm.org/D109588
2021-09-10 18:35:10 +08:00
Cheng Wang b659b789c0 [libc] Some clean work with memmove.
- Replace `move_byte_forward()` with `memcpy`. In `memcpy` implementation,
it copies bytes forward from beginning to end. Otherwise, `memmove` unit
tests will break.
- Make `memmove` unit tests work.

Reviewed By: gchatelet

Differential Revision: https://reviews.llvm.org/D109316
2021-09-10 16:52:42 +08:00
Siva Chandra Reddy c5cfbe40de [libc] Skip fenv exception tests on aarch64 if HW doesn't support exceptions.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D109538
2021-09-09 20:47:59 +00:00
Guillaume Chatelet 219a1d217d [libc] Fix running benchmarks under msan/asan
asan/msan intercepts `aligned_malloc` and misbehave when the requested
alignment is greater than 512.
b041b613e6/compiler-rt/lib/asan/asan_allocator.cpp (L430-L431)
2021-09-08 14:43:55 +00:00
Siva Chandra Reddy 2bf8be79b1 [libc][NFC] Add fenv and string headers to x86_64 headers list. 2021-09-07 21:06:39 +00:00
Cheng Wang 9b015383f1 [libc][Obvious] Reorder CMakelists alphabetically. 2021-09-05 11:01:05 +08:00
Cheng Wang 7abd8f6c6e [libc][Obvious] Fix typos 2021-09-05 10:54:52 +08:00
Michael Jones 37ce7349f7 [libc] fix strtointeger hex prefix parsing
Fix edge case where "0x" would be considered a complete hexadecimal
number for purposes of str_end. Now the hexadecimal prefix needs a valid
digit after it, else just the 0 will be counted as the number.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D109084
2021-09-03 20:39:15 +00:00
Siva Chandra Reddy 2f4f452f16 [libc] Add a skeleton for C standard condition variable functions.
This patch adds a skeleton as a preparatory step for the next patch which
adds the actual implementations of the condition variable functions.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D108947
2021-09-01 19:41:52 +00:00
Siva Chandra Reddy 0239adac4a [libc] Mark return value of memcpy in strcpy as initialized for msan.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D109045
2021-09-01 19:01:25 +00:00
Michael Jones 7f2ce19d1c [libc][nfc][obvious] fix typos in FPUtil
Fix minor typos in FPUtil comments.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D108952
2021-08-30 22:39:02 +00:00
Siva Chandra Reddy 7a2a765745 [libc] Add mtx_destroy which does nothing.
There is not cleanup to be done for the mutex type so mtx_destroy does
nothing.
2021-08-30 20:43:46 +00:00
Siva Chandra Reddy 3383ec5fdd [libc] Ensure the result of the clone syscall is not on stack in thrd_create.
Also, added a call to munmap on error in thrd_create.
2021-08-30 04:35:40 +00:00
Siva Chandra Reddy f7e572b4f4 [libc][NFC] Add a check to catch mismatch in internal and public mutex types. 2021-08-30 04:08:35 +00:00
Roland McGrath 225eb8a22d [libc][NFC] Fix onre more -Wconversion warning in strtoul test code.
The last change missed one spot.

Differential Revision: https://reviews.llvm.org/D108845
2021-08-27 14:12:39 -07:00
Roland McGrath 4e1a164d7b [libc] Fix various -Wconversion warnings in strto*l test code.
The Fuchsia build compiles the libc and test code with lots
of warnings enabled, including all the integer conversion warnings.
There was some sloppy type usage here that triggered some of those.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D108800
2021-08-27 14:04:00 -07:00
Siva Chandra Reddy 8e284be04f [libc][Obvious] Add header guards for the generated linux syscall header file. 2021-08-27 16:17:53 +00:00
Siva Chandra Reddy 004c7b1da6 [libc][NFC] Move the mutex implementation into a utility class.
This allows others parts of the libc to use the mutex types without
actually pulling in public function implementations.

Along the way, few cleanups have been done, like using a uniform type to
refer the linux futex word.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D108749
2021-08-26 18:49:20 +00:00
Michael Jones 035325275c [libc] add inttypes header
Add inttypes.h to llvm libc. As its first functions strtoimax and
strtoumax are included.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108736
2021-08-26 18:04:21 +00:00
Michael Jones fdee2d768d [libc] Fix too long number in strtoul_test
I think this is the last windows type conversion fix, the rest of the
build seems to be okay.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108659
2021-08-24 20:17:09 +00:00
Michael Jones 6bbfd6a9c1 [libc] Fix type errors on Windows
Fix the errors caused by having some numbers too large for a 32 bit
number in the tests for windows. Also fix the base causing some type
confusion.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108653
2021-08-24 19:42:13 +00:00
Michael Jones 1d02a8bcd3 [libc] fix string conversion tests for windows
There were some copy paste errors as well as some oddities around how
windows handles the difference between long and long long types. This
change fixes those.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108591
2021-08-24 18:06:21 +00:00
Michael Jones eff11176c5 [libc] Enable string to integer conversion functions in the default build
Adds atoi, atol, atoll, strtol, strtoll, strtoul, and strtoull to the
list of entrypoints for Windows and aarch64 linux, as well as moving
them out of the LLVM_LIBC_FULL_BUILD condition for x86_64 linux.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108477
2021-08-23 21:18:14 +00:00
Alfonso Gregory 9cdd4ea06f [libc][NFC] Add explicit casts to ctype functions
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D106902
2021-08-23 18:17:20 +00:00
Siva Chandra Reddy 8e488c3cc0 [libc] Add a multi-waiter mutex test.
A corresponding adjustment to mtx_lock has also been made.
2021-08-23 05:47:30 +00:00
Siva Chandra Reddy ca6b354229 [libc] Add range reduction functions based on Paine and Hanek algorithm.
These functions will be used in a future patch to implement
trigonometric functions. Unit tests have been added but to the
libc-long-running-tests suite. The unit tests long running because we
compare against MPFR computations performed at 1280 bits of precision.

Some cleanups or elimination of repeated patterns can be done as follow
up changes.

Differential Revision: https://reviews.llvm.org/D104817
2021-08-23 05:18:41 +00:00
Siva Chandra Reddy 5e147d3058 [libc] Add a new suite called "libc-long-running-tests".
This suite is helpful is adding long running tests which take a long
time to finish that they can be run on the public builders. They
will probably be run on special builders in future.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D104816
2021-08-21 05:01:28 +00:00
Fangrui Song 40aab0412f [test] Migrate -gcc-toolchain with space separator to --gcc-toolchain=
Space separated driver options are uncommon but Clang traditionally
did not do a good job. --gcc-toolchain= is the preferred form.
2021-08-20 15:24:58 -07:00
Michael Jones 6ce6fa4ad4 [libc] make the scudo integration test run
adds a custom command for libc-scudo-integration-test that makes it run
when it is built.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108409
2021-08-20 17:51:11 +00:00
Guillaume Chatelet 791d88f35f [libc] Align to 32B instead of 16B for optimized memcmp 2021-08-20 13:09:35 +00:00
Guillaume Chatelet b460534ac7 [libc] Add an optimized version for memcmp
Differential Revision: https://reviews.llvm.org/D108406
2021-08-20 06:40:37 +00:00