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Summary:
These all had somewhat custom file headers with different text from the
ones I searched for previously, and so I missed them. Thanks to Hal and
Kristina and others who prompted me to fix this, and sorry it took so
long.
Reviewers: hfinkel
Subscribers: mcrosier, javed.absar, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60406
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@357941 91177308-0d34-0410-b5e6-96231b3b80d8
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for MS compatibility. Remove declarations from intrin.h and implementations from lzcntintrin.h
intrin.h had forward declarations for these and lzcntintrin.h had implementations that were only available with -mlzcnt or a -march that supported the lzcnt feature.
For MS compatibility we should always have these builtins available regardless of X86 being the target or the CPU support the lzcnt instruction. The backends should be able to gracefully fallback to something support even if its just shifts and bit ops.
Unfortunately, gcc also implements 2 of the 3 function names here on X86 when lzcnt feature is enabled.
This patch adds builtins for these for MSVC compatibility and drops the forward declarations from intrin.h. To keep the gcc compatibility the two intrinsics that collided have been turned into macros that use the X86 specific builtins with the lzcnt feature check. These macros are only defined when _MSC_VER is not defined. Without them being macros we can get a redefinition error because -ms-extensions doesn't seem to set _MSC_VER but does make the MS builtins available.
Should fix PR40014
Differential Revision: https://reviews.llvm.org/D55677
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@349098 91177308-0d34-0410-b5e6-96231b3b80d8
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flag set to false.
Previously we used a select and the zero_undef=true intrinsic. In -O2 this pattern will get optimized to zero_undef=false. But in -O0 this optimization won't happen. This results in a compare and cmov being wrapped around a tzcnt/lzcnt instruction.
By using the zero_undef=false intrinsic directly without the select, we can improve the -O0 codegen to just an lzcnt/tzcnt instruction.
Differential Revision: https://reviews.llvm.org/D52392
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@343126 91177308-0d34-0410-b5e6-96231b3b80d8
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(1) I added some \see cross-references to a few select intrinsics that are related (and have the same or similar semantics).
(2) pmmintrin.h, smmintrin.h, xmmintrin.h have very few minor formatting changes. They make rendering of our intrinsics documentation better.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@333065 91177308-0d34-0410-b5e6-96231b3b80d8
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This is similar to the LLVM change https://reviews.llvm.org/D46290.
We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.
Patch produced by
for i in $(git grep -l '\@brief'); do perl -pi -e 's/\@brief //g' $i & done
for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done
Differential Revision: https://reviews.llvm.org/D46320
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@331834 91177308-0d34-0410-b5e6-96231b3b80d8
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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 Charles Li.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@287317 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@241065 91177308-0d34-0410-b5e6-96231b3b80d8
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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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@239883 91177308-0d34-0410-b5e6-96231b3b80d8
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This is a precursor to changing them to use the new target attribute
code.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@239882 91177308-0d34-0410-b5e6-96231b3b80d8
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names for these intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221066 91177308-0d34-0410-b5e6-96231b3b80d8
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for 0 before calling __builtin_clz. Without this the optimizers may take advantage of the undefined behavior and produce incorrect results. LLVM itself still needs to be taught to merge the zero check into the llvm.ctlz with defined zero behavior.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221064 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147263 91177308-0d34-0410-b5e6-96231b3b80d8
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