Commit Graph

6 Commits

Author SHA1 Message Date
Chandler Carruth
7c3769df62 Update more file headers across all of the LLVM projects in the monorepo
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@351648 91177308-0d34-0410-b5e6-96231b3b80d8
2019-01-19 10:56:40 +00:00
Eric Fiselier
33cc965bf6 Fix UB in SIMD tests.
One of the SIMD tests attempted to left shift a value by 42, which
is UB when the left hand side is a 32 bit integer type.

This patch adjusts the test to use the value 4 instead of 42.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@342820 91177308-0d34-0410-b5e6-96231b3b80d8
2018-09-22 20:09:02 +00:00
Tim Shen
379cbeb1a2 [libcxx] fix >> 42 UB in <experimental/simd>
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@338325 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-30 23:05:40 +00:00
Tim Shen
154f393a5c Re-apply "[libcxx] implement <simd> ABI for Clang/GCC vector extension, constructors, copy_from and copy_to."
...with proper guarding #ifdefs for unsupported C++11.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@338318 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-30 22:27:38 +00:00
Tim Shen
b6244cf5af Revert "[libcxx] implement <simd> ABI for Clang/GCC vector extension, constructors, copy_from and copy_to."
This reverts commit r338309.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@338316 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-30 22:21:22 +00:00
Tim Shen
373299533a [libcxx] implement <simd> ABI for Clang/GCC vector extension, constructors, copy_from and copy_to.
Summary:
This patch adds a new macro _LIBCPP_HAS_NO_VECTOR_EXTENSION for detecting
whether a vector extension (\_\_attribute\_\_((vector_size(num_bytes)))) is
available.

On the top of that, this patch implements the following API:
* all constructors
* operator[]
* copy_from
* copy_to

It also defines simd_abi::native to use vector extension, if available.
In GCC and Clang, certain values with vector extension are passed by registers,
instead of memory.

Based on D41148.

Reviewers: mclow.lists, EricWF

Subscribers: cfe-commits, MaskRay, lichray, sanjoy

Differential Revision: https://reviews.llvm.org/D41376

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@338309 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-30 21:23:13 +00:00