26 Commits

Author SHA1 Message Date
Tue Ly
d680258170 [libc] Implement a high-precision floating point class.
Implement a high-precision floating point class using UInt<> as its
mantissa.  This will be used in accurate pass for double precision math
functions.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D136799
2022-12-14 00:37:14 -05:00
Michael Jones
7a129f0756 [libc] add scanf parser and core utilities
This is the first piece of scanf. It's very similar in design to printf,
and so much of the code is copied from that. There were potential issues
with conflicting macros so I've also renamed the "ASSERT_FORMAT_EQ"
macro for printf to "ASSERT_PFORMAT_EQ".

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D136288
2022-10-28 10:52:51 -07:00
Michael Jones
9ac66f0650 [libc][cmake] split fputil into individual targets
The libc.src.__support.FPUtil.fputil target encompassed many unrelated
files, and provided a lot of hidden dependencies. This patch splits out
all of these files into component parts and cleans up the cmake files
that used them. It does not touch any source files for simplicity, but
there may be changes made to them in future patches.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D132980
2022-08-31 10:44:52 -07:00
Guillaume Chatelet
9d239b37f7 [NFC][libc] Move Uint implementation to parent directory
Differential Revision: https://reviews.llvm.org/D132638
2022-08-25 12:42:06 +00:00
Michael Jones
096463d08e [libc] move printf to use StringViews
The FormatSection and the writer functions both previously took a char*
and a length to represent a string. Now they use the StringView class to
represent that more succinctly. This change also required fixing
everywhere these were used, so it touches a lot of files.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D131994
2022-08-24 10:28:31 -07:00
Guillaume Chatelet
22bc0fde55 [NFC][libc] Switch mem* tests from ArrayRef to span 2022-08-22 09:58:35 +00:00
Michael Jones
e0e7fa36d3 [libc] enable s(n)printf without fullbuild
To use the FILE data structure, LLVM-libc must be in fullbuild mode
since it expects its own implementation. This means that (f)printf can't
be used without fullbuild, but s(n)printf only uses strings. This patch
adjusts the CMake to allow for this.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D131913
2022-08-15 13:45:34 -07:00
Siva Chandra Reddy
300f8da8e8 [libc] Add Uint128 type as a fallback when __uint128_t is not available.
Also, the unused specializations of __int128_t have been removed.

Differential Revision: https://reviews.llvm.org/D128304
2022-06-24 16:03:35 +00:00
Michael Jones
ef6614e4a2 [libc] Fix PrintfMatcher Cmake Rule
The PrintfMatcher depends on printf which is in stdio. Stdio is
currently fullbuild only, but the matcher wasn't, causing failing builds
when fullbuild was off. This patch adds the fullbuild condition to the
PrintfMatcher cmake.

Differential Revision: https://reviews.llvm.org/D124304
2022-04-22 14:40:21 -07:00
Michael Jones
ff1374785f [libc] Add Printf FormatSection Matcher
This patch changes the printf parser tests to use a more robust matcher.
This allows for better debugging of parsing issues. This does not affect
the actual printf code at all, only the tests.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D124130
2022-04-22 14:21:39 -07:00
Michael Jones
bf0ded805a [libc][NFC] split standalone_cpp into single headers
Previously, the entire support/CPP folder was in one header library,
which meant that a lot of headers were included where they shouldn't be.
This patch splits each header into its own target, as well as adjusting
each place they were included to only include what is used.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D121237
2022-03-08 11:56:08 -08:00
Guillaume Chatelet
83f9b13d8c [libc] Optimized version of memmove
This implementation relies on storing data in registers for sizes up to 128B.
Then depending on whether `dst` is less (resp. greater) than `src` we move data forward (resp. backward) by chunks of 32B.
We first make sure one of the pointers is aligned to increase performance on large move sizes.

Differential Revision: https://reviews.llvm.org/D114637
2022-02-08 11:55:09 +00:00
Siva Chandra Reddy
6c3f53c7ba [libc][NFC] Move test related pieces from FPUtil to util/UnitTest.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D112673
2021-10-29 15:37:30 +00:00
Siva Chandra Reddy
f362aea42d [libc][NFC] Move utils/CPP to src/__support/CPP.
The idea is to move all pieces related to the actual libc sources to the
"src" directory. This allows downstream users to ship and build just the
"src" directory.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D112653
2021-10-28 15:50:00 +00:00
Guillaume Chatelet
47afd43eaa [libc] fix LibcUnitTestMain when building with shared libraries 2021-07-26 08:43:45 +00:00
Caitlyn Cano
fa7a9ef178 [libc] Add option to run specific tests
This addition reads command line input to run specific single tests
within a larger call to run all the tests for a particular function.
When the user adds a second argument to the command line, the code skips
all the tests that don't match the user's specified binary. If the user
doesn't specify a test correctly and/or no tests are run, a failure
message prints.

Reviewed By: sivachandra, aeubanks

Differential Revision: https://reviews.llvm.org/D105843
2021-07-23 16:08:13 +00:00
Siva Chandra Reddy
f4c8fd12d5 [libc][NFC] Use add_library instead of add_llvm_library for a few libraries.
These libraries do not depend on LLVM libraries anymore so they do not
have to be added using add_llvm_library.
2021-06-08 23:15:24 +00:00
Michael Jones
4cfccd5133 [libc][NFC] add macro for fuchsia to switch test backend to zxtest
This moves utils/UnitTest/Test.[h/cpp] to LibcTest.[h/cpp] and adds a
new Test.h that acts as a switcher so that Fuchsia can use the zxtest
backend for running our tests as part of their build.

FuchsiaTest.h is for including fuchsia's zxtest library and anything
else needed to make the tests work under fuchsia (currently just
undefining the isascii macro for the test).

Downstream users, please fix your build instead of reverting.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D94625
2021-01-13 21:28:02 +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
Siva Chandra Reddy
acca2980a3 [libc][obvious] Move ErrnoSetterMatcher to test/ErrnoSetterMetcher.h. 2020-07-28 11:05:52 -07:00
Siva Chandra Reddy
e4767a6f14 [libc] Add fully-qualified target names.
Only targets setup by the special LLVM libc rules now have fully
qualified names. The naming style is similar to fully qualified names in
Python.

Reviewers: abrachet, PaulkaToast, phosek

Differential Revision: https://reviews.llvm.org/D77340
2020-04-10 18:01:52 -07:00
Alex Brachet
1962bc1dfb [libc] [UnitTest] Add Matchers
Summary: This patch adds gtest-like matchers and `EXPECT|ASSERT_THAT` macros. It also adds matchers `Succeeds` and `Fails` and has examples using these in test/src/signal/sigaddset_test.cpp.

Reviewers: sivachandra, gchatelet, PaulkaToast

Reviewed By: sivachandra, PaulkaToast

Subscribers: mgorny, MaskRay, tschuett, libc-commits

Differential Revision: https://reviews.llvm.org/D75487
2020-03-05 18:36:11 -05:00
Alex Brachet
805f5836d1 [libc] Fix build when -DBUILD_SHARED_LIBS=On
Reviewers: gchatelet, sivachandra

Reviewed By: gchatelet, sivachandra

Subscribers: libc-commits, mgorny, MaskRay, tschuett

Differential Revision: https://reviews.llvm.org/D75136
2020-02-26 12:19:09 -05:00
Siva Chandra Reddy
c6bc10636c [libc] Add a library of standalone C++ utilities.
Some of the existing utils in utils/UnitTest/Test.h have been moved to
this new library.

Reviewers: abrachet, gchatelet

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D73530
2020-01-29 13:44:02 -08:00
Guillaume Chatelet
2c1a142a78 Fix missing dependency in LibcUnitTest
Summary: LibcUnitTest is missing a dependency on LLVMSupport. This prevents building with shared libraries.

Reviewers: sivachandra

Subscribers: mgorny, MaskRay, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D73337
2020-01-27 10:14:39 +01:00
Siva Chandra Reddy
c7453fad06 [libc] Replace the use of gtest with a new light weight unittest framework.
Header files included wrongly using <...> are now included using the
internal path names as the new unittest framework allows us to do so.

Reviewers: phosek, abrachet

Differential Revision: https://reviews.llvm.org/D72743
2020-01-17 16:24:53 -08:00