I made some small changes in smmintrin.h and emmintrin.h intrinsics.
- changed some regular comments '//' into doxygen-style comments '///' where necessary
- removed some trailing spaces in doxygen comments.
I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream.
llvm-svn: 298371
The DAZ feature introduces the denormal zero support for x86.
Currently the definitions are located under SSE3 header, however there are some SSE2 targets that support the feature as well.
Differential Revision: https://reviews.llvm.org/D30194
llvm-svn: 296296
Note: The doxygen comments are automatically generated based on Sony's intrinsic
s document.
I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream.
llvm-svn: 295404
Added doxygen comments for the newly added intrinsics in avxintrin.h, namely _mm256_cvtsd_f64, _mm256_cvtsi256_si32 and _mm256_cvtss_f32
Added doxygen comments for the new intrinsics in emmintrin.h, namely _mm_loadu_si64 and _mm_load_sd.
Explicit parameter names were added for _mm_clflush and _mm_setcsr
The rest of the changes are editorial, removing trailing spaces at the end of the lines.
Differential Revision: https://reviews.llvm.org/D28503
llvm-svn: 291876
Improved doxygen comments for the following intrinsics headers: __wmmintrin_pclmul.h, bmiintrin.h, emmintrin.h, f16cintrin.h, immintrin.h, mmintrin.h, pmmintrin.h, tmmintrin.h
Added \n commands to insert a line breaks where necessary, since one long line of documentation is nearly unreadable.
Formatted comments to fit into 80 chars.
In some cases added \a command in front of the parameter names to display them in italics.
llvm-svn: 290561
Tagged instruction names with <c> INSTR_NAME </c> to display them in typewriter font.
In the past, \c command was used, unfortunately it applied to only one word.
<c> .. </c> has the same meaning, but applies to all words in between the tags.
llvm-svn: 289249
I made several changes for consistency with the rest of x86 instrinsics header files. Some of these changes help to render doxygen comments better.
1. avxintrin.h – Moved the opening bracket on a separate line for several
intrinsics (for consistency with the rest of the intrinsics).
2. emmintrin.h - Moved the doxygen comment next to the body of the function;
- Added braces after extern "C" even though there is only
one declaration each time
3. xmmintrin.h - Moved the doxygen comment next to the body of the function;
- Added intrinsic prototypes for a couple of macro definitions
into the doxygen comment;
- Added braces after extern "C" even though there is only one
declaration each time
4. ammintrin.h – Removed extra line between the doxygen comment and the body
of the functions (for consistency with the rest of the files).
Desk reviewed by Paul Robinson.
llvm-svn: 287278
Added doxygen comments to avxintrin.h's intrinsics. As of now, around 75% of the
intrinsics in this file are documented here. The patches for the other 25% will be se
nt out later.
Removed extra spaces in emmitrin.h.
Note: The doxygen comments are automatically generated based on Sony's intrinsics document.
I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream.
llvm-svn: 286336
With this patch, all intrinsics in this file (with an exception of a handful of a recently added ones) will be documented. I will send out a patch for 4 missining intrisics later.
The doxygen comments are automatically generated based on Sony's intrinsics document.
I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream. This patch was internally reviewed by Yunzhong Gao.
llvm-svn: 284934
With this patch, 75% of the intrinsics in this file will be documented now. The patches for the rest of the intrisics in this file will be send out later.
The doxygen comments are automatically generated based on Sony's intrinsics document.
I got an OK from Eric Christopher to commit doxygen comments without prior code review upstream. This patch was internally reviewed by Yunzhong Gao.
llvm-svn: 284754
These will be reused when removing some builtins from avx512vldqintrin.h and this will make the tests for that change show a better number of vector elements.
llvm-svn: 280196
Only around 50% of the intrinsics in this file are documented now. The patches for the rest of the intrisics in this file will be send out later.
The doxygen comments are automatically generated based on Sony's intrinsics docu
ment.
I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream. This patch was internally reviewed by Paul Robinson.
llvm-svn: 276499
D20859 and D20860 attempted to replace the SSE (V)CVTTPS2DQ and VCVTTPD2DQ truncating conversions with generic IR instead.
It turns out that the behaviour of these intrinsics is different enough from generic IR that this will cause problems, INF/NAN/out of range values are guaranteed to result in a 0x80000000 value - which plays havoc with constant folding which converts them to either zero or UNDEF. This is also an issue with the scalar implementations (which were already generic IR and what I was trying to match).
This patch changes both scalar and packed versions back to using x86-specific builtins.
It also deals with the other scalar conversion cases that are runtime rounding mode dependent and can have similar issues with constant folding.
Differential Revision: https://reviews.llvm.org/D22105
llvm-svn: 276102
We can now use __builtin_nontemporal_store instead of target specific builtins for naturally aligned nontemporal stores which avoids the need for handling in CGBuiltin.cpp
The scalar integer nontemporal (unaligned) store builtins will have to wait as __builtin_nontemporal_store currently assumes natural alignment and doesn't accept the 'packed struct' trick that we use for normal unaligned load/stores.
The nontemporal loads require further backend support before we can safely convert them to __builtin_nontemporal_load
Differential Revision: http://reviews.llvm.org/D21272
llvm-svn: 272540
This is really only needed for addition, subtraction, and multiplication, but I did the bitwise ops too for overall consistency. Clang currently doesn't set NSW for signed vector operations so the undefined behavior shouldn't happen today.
llvm-svn: 271778
The 'cvtt' truncation (round to zero) conversions can be safely represented as generic __builtin_convertvector (fptosi) calls instead of x86 intrinsics. We already do this (implicitly) for the scalar equivalents.
Note: I looked at updating _mm_cvttpd_epi32 as well but this still requires a lot more backend work to correctly lower (both for debug and optimized builds).
Differential Revision: http://reviews.llvm.org/D20859
llvm-svn: 271436
According to the gcc headers, intel intrinsics docs and msdn codegen the _mm_store1_pd (and its _mm_store_pd1 equivalent) should use an aligned pointer - the clang headers are the only implementation I can find that assume non-aligned stores (by storing with _mm_storeu_pd).
Additionally, according to the intel intrinsics docs and msdn codegen the _mm_store1_ps (_mm_store_ps1) requires a similarly aligned pointer.
This patch raises the alignment requirements to match the other implementations by calling _mm_store_ps/_mm_store_pd instead.
I've also added the missing _mm_store_pd1 intrinsic (which maps to _mm_store1_pd like _mm_store_ps1 does to _mm_store1_ps).
As a followup I'll update the llvm fast-isel tests to match this codegen.
Differential Revision: http://reviews.llvm.org/D20617
llvm-svn: 271218
As discussed on http://reviews.llvm.org/D20684, move the unsigned integer vector types used for zero extension to make them available for general use.
llvm-svn: 271187
Both the (V)CVTDQ2PD(Y) (i32 to f64) and (V)CVTPS2PD(Y) (f32 to f64) conversion instructions are lossless and can be safely represented as generic __builtin_convertvector calls instead of x86 intrinsics without affecting final codegen.
This patch removes the clang builtins and their use in the sse2/avx headers - a future patch will deal with removing the llvm intrinsics, but that will require a bit more work.
Differential Revision: http://reviews.llvm.org/D20528
llvm-svn: 270499
The doxygen comments are automatically generated based on Sony's intrinsics document.
I got an OK from Eric Christopher to commit doxygen comments without prior code review upstream. This patch was internally reviewed by Paul Robinson.
llvm-svn: 265844
test that our intrinsics behave the same under -fsigned-char and
-funsigned-char.
This further testing uncovered that AVX-2 has a broken cmpgt for 8-bit
elements, and has for a long time. This is fixed in the same way as
SSE4 handles the case.
The other ISA extensions currently work correctly because they use
specific instruction intrinsics. As soon as they are rewritten in terms
of generic IR, they will need to add these special casts. I've added the
necessary testing to catch this however, so we shouldn't have to chase
it down again.
I considered changing the core typedef to be signed, but that seems like
a bad idea. Notably, it would be an ABI break if anyone is reaching into
the innards of the intrinsic headers and passing __v16qi on an API
boundary. I can't be completely confident that this wouldn't happen due
to a macro expanding in a lambda, etc., so it seems much better to leave
it alone. It also matches GCC's behavior exactly.
A fun side note is that for both GCC and Clang, -funsigned-char really
does change the semantics of __v16qi. To observe this, consider:
% cat x.cc
#include <smmintrin.h>
#include <iostream>
int main() {
__v16qi a = { 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
__v16qi b = _mm_set1_epi8(-1);
std::cout << (int)(a / b)[0] << ", " << (int)(a / b)[1] << '\n';
}
% clang++ -o x x.cc && ./x
-1, 1
% clang++ -funsigned-char -o x x.cc && ./x
0, 1
However, while this may be surprising, both Clang and GCC agree.
Differential Revision: http://reviews.llvm.org/D13324
llvm-svn: 249097
This involved removing the conditional inclusion and replacing them
with target attributes matching the original conditional inclusion
and checks. The testcase update removes the macro checks for each
file and replaces them with usage of the __target__ attribute, e.g.:
int __attribute__((__target__(("sse3")))) foo(int a) {
_mm_mwait(0, 0);
return 4;
}
This usage does require the enclosing function have the requisite
__target__ attribute for inlining and code generation - also for
any macro intrinsic uses in the enclosing function. There's no change
for existing uses of the intrinsic headers.
llvm-svn: 239883
Also removed unused builtins.
Original patch by Andrea Di Biagio!
Reviewers: craig.topper, nadav
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D7199
llvm-svn: 228481
This still lower to the same intrinsics as before.
This is preparation for bounds checking the immediate on the avx version of the builtin so we don't pass illegal immediates into the backend. Since SSE uses a smaller size immediate its not possible to bounds check when using a shared builtin. Rather than creating a clang specific builtin for the different immediate, I decided (after consulting with Chandler) that it was better to match gcc.
llvm-svn: 224879
Simon Pilgrim