This patch factors out mappings of scalar maths functions to their vector
counterparts from TargetLibraryInfo.cpp to a separate VecFuncs.def file. Such
mappings are currently available for Accelerate framework, and SVML library.
This is in support of the follow-up: https://reviews.llvm.org/D59881
Patch by pjeeva01
Differential revision: https://reviews.llvm.org/D60211
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358001 91177308-0d34-0410-b5e6-96231b3b80d8
The Emscripten OS provides a definition of __EMSCRIPTEN__, and also that it
supports iprintf optimizations.
Also define small_printf optimizations, which is a printf with float support
but not long double (which in wasm can be useful since long doubles are 128
bit and force linking of float128 emulation code). This part is based on
sunfish's https://reviews.llvm.org/D57620 (which can't land yet since
the WASI integration isn't ready yet).
Differential Revision: https://reviews.llvm.org/D60167
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357552 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Right now, when we encounter a string equality check,
e.g. `if (memcmp(a, b, s) == 0)`, we try to expand to a comparison if `s` is a
small compile-time constant, and fall back on calling `memcmp()` else.
This is sub-optimal because memcmp has to compute much more than
equality.
This patch replaces `memcmp(a, b, s) == 0` by `bcmp(a, b, s) == 0` on platforms
that support `bcmp`.
`bcmp` can be made much more efficient than `memcmp` because equality
compare is trivially parallel while lexicographic ordering has a chain
dependency.
Subscribers: fedor.sergeev, jyknight, ckennelly, gchatelet, llvm-commits
Differential Revision: https://reviews.llvm.org/D56593
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@355672 91177308-0d34-0410-b5e6-96231b3b80d8
It seems that the run time for Windows has changed and supports more math
functions than before. Since LLVM requires at least VS2015, I assume that
this is the run time that would be redistributed with programs built with
Clang. Thus, I based this update on the header file `math.h` that
accompanies it.
This patch addresses the PR40541. Unfortunately, I have no access to a
Windows development environment to validate it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353114 91177308-0d34-0410-b5e6-96231b3b80d8
to reflect the new license.
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/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
This changeset is modeled after Intel's submission for SVML. It enables
trigonometry functions vectorization via SLEEF: http://sleef.org/.
* A new vectorization library enum is added to TargetLibraryInfo.h: SLEEF.
* A new option is added to TargetLibraryInfoImpl - ClVectorLibrary: SLEEF.
* A comprehensive test case is included in this changeset.
* In a separate changeset (for clang), a new vectorization library argument is
added to -fveclib: -fveclib=SLEEF.
Trigonometry functions that are vectorized by sleef:
acos
asin
atan
atanh
cos
cosh
exp
exp2
exp10
lgamma
log10
log2
log
sin
sinh
sqrt
tan
tanh
tgamma
Patch by Stefan Teleman
Differential Revision: https://reviews.llvm.org/D53927
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347510 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This is replacement for patch in https://reviews.llvm.org/D49460.
When we fork, the counters are duplicate as they're and so the values are finally wrong when writing gcda for parent and child.
So just before to fork, we flush the counters and so the parent and the child have new counters set to zero.
For exec** functions, we need to flush before the call to have some data.
Reviewers: vsk, davidxl, marco-c
Reviewed By: marco-c
Subscribers: llvm-commits, sylvestre.ledru, marco-c
Differential Revision: https://reviews.llvm.org/D53593
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@346313 91177308-0d34-0410-b5e6-96231b3b80d8
There are quite a few if statements that enumerate all these cases. It gets
even worse in our fork of LLVM where we also have a Triple::cheri (which
is mips64 + CHERI instructions) and we had to update all if statements that
check for Triple::mips64 to also handle Triple::cheri. This patch helps to
reduce our diff to upstream and should also make some checks more readable.
Reviewed By: atanasyan
Differential Revision: https://reviews.llvm.org/D48548
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335493 91177308-0d34-0410-b5e6-96231b3b80d8
These weren't included in D19544 - probably just an oversight.
D40044 made it more likely that we'll have LLVM math intrinsics rather
than libcalls, so this bug was more easily exposed.
As the tests/code show, we already have the complete mappings for pow/exp/log.
I don't have any experience with SVML, so I don't know if anything else is
missing. It's also not clear to me that we should be doing this transform in
IR rather than DAG/isel, but that's a separate issue.
Differential Revision: https://reviews.llvm.org/D47610
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334211 91177308-0d34-0410-b5e6-96231b3b80d8
The existing comment said that the functions were available only
on GNU/Linux (and on certain Android versions), but only checked
T.isGNUEnvironment() which also is true on MinGW (for arch-windows-gnu
triplets), which doesn't have such functions.
Existing checks in the initialize function in TargetLibraryInfo.cpp
also use only T.isOSLinux() to check for glibc features.
This fixes use of stdio on MinGW.
Differential Revision: https://reviews.llvm.org/D47002
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332581 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: If file stream arg is not captured and source is fopen, we could replace IO calls by unlocked IO ("_unlocked" function variants) to gain better speed,
Reviewers: efriedma, RKSimon, spatel, sanjoy, hfinkel, majnemer, lebedev.ri, rja
Reviewed By: rja
Subscribers: rja, srhines, efriedma, lebedev.ri, llvm-commits
Differential Revision: https://reviews.llvm.org/D45736
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332452 91177308-0d34-0410-b5e6-96231b3b80d8
If the sprintf function is static (as on mingw-w64, where many stdio
functions are static inline wrappers), earlier optimization passes
could optimize out the return value altogether, and make it void,
which could break optimizations of this libcall that touch the
return value.
This fixes the issue discussed in PR37408 for the sprintf function.
Differential Revision: https://reviews.llvm.org/D46752
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332106 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: If file stream arg is not captured and source is fopen, we could replace IO calls by unlocked IO ("_unlocked" function variants) to gain better speed,
Reviewers: efriedma, RKSimon, spatel, sanjoy, hfinkel, majnemer
Subscribers: lebedev.ri, llvm-commits
Differential Revision: https://reviews.llvm.org/D45736
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331002 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Clang's __builtin_operator_new/delete was recently taught about the aligned allocation overloads (r328134). This patch makes LLVM aware of them as well.
This allows the compiler to perform certain optimizations including eliding new/delete calls.
Reviewers: rsmith, majnemer, dblaikie, vsk, bkramer
Reviewed By: bkramer
Subscribers: ckennelly, llvm-commits
Differential Revision: https://reviews.llvm.org/D44769
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329218 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Clang's __builtin_operator_new/delete was recently taught about the aligned allocation overloads (r328134). This patch makes LLVM aware of them as well.
This allows the compiler to perform certain optimizations including eliding new/delete calls.
Reviewers: rsmith, majnemer, dblaikie, vsk, bkramer
Reviewed By: bkramer
Subscribers: ckennelly, llvm-commits
Differential Revision: https://reviews.llvm.org/D44769
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329215 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.
To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.
Note: This patch is one of a series of patches to replace *all* std::sort to llvm::sort.
Refer D44363 for a list of all the required patches.
Reviewers: sanjoy, dexonsmith, hfinkel, RKSimon
Reviewed By: dexonsmith
Subscribers: david2050, llvm-commits
Differential Revision: https://reviews.llvm.org/D44944
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@328925 91177308-0d34-0410-b5e6-96231b3b80d8
Since r322087, glibc's finite lib calls are generated when possible.
However, they are not supported on Android. This change also
disables other functions not available on Android.
Differential Revision: http://reviews.llvm.org/D42668
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@323898 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Since r322087, glibc's finite lib calls are generated when possible.
However, glibc is not supported on Android. Therefore this change
enables llvm to finely distinguish between linux and Android for
unsupported library calls. The change also include some regression
tests.
Reviewers: srhines, pirama
Reviewed By: srhines
Subscribers: kongyi, chh, javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D42288
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@323187 91177308-0d34-0410-b5e6-96231b3b80d8
This patch was part of:
https://reviews.llvm.org/D41338
...but we can expose the bug in IR via constant propagation
as shown in the test. Unless the triple includes 'linux', we
should not fold these because the functions don't exist on
other platforms (yet?).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322010 91177308-0d34-0410-b5e6-96231b3b80d8
Usually the frontend communicates the size of wchar_t via metadata and
we can optimize wcslen (and possibly other calls in the future). In
cases without the wchar_size metadata we would previously try to guess
the correct size based on the target triple; however this is fragile to
keep up to date and may miss users manually changing the size via flags.
Better be safe and stop guessing and optimizing if the frontend didn't
communicate the size.
Differential Revision: https://reviews.llvm.org/D38106
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314185 91177308-0d34-0410-b5e6-96231b3b80d8
Refactor the strlen optimization code to work for both strlen and wcslen.
This especially helps with programs in the wild where people pass
L"string"s to const std::wstring& function parameters and the wstring
constructor gets inlined.
This also fixes a lingerind API problem/bug in getConstantStringInfo()
where zeroinitializers would always give you an empty string (without a
length) back regardless of the actual length of the initializer which
did not work well in the TrimAtNul==false causing the PR mentioned
below.
Note that the fixed getConstantStringInfo() needed fixes to SelectionDAG
memcpy lowering and may lead to some cases for out-of-bounds
zeroinitializer accesses not getting optimized anymore. So some code
with UB may produce out of bound memory reads now instead of just
producing zeros.
The refactoring "accidentally" fixes http://llvm.org/PR32124
Differential Revision: https://reviews.llvm.org/D32839
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303461 91177308-0d34-0410-b5e6-96231b3b80d8
This function gives the wrong answer on some non-ELF platforms in some
cases. The function that does the right thing lives in Mangler.h. To try to
discourage people from using this function, give it a different name.
Differential Revision: https://reviews.llvm.org/D33162
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303134 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
The LibFunc::Func enum holds enumerators named for libc functions.
Unfortunately, there are real situations, including libc implementations, where
function names are actually macros (musl uses "#define fopen64 fopen", for
example; any other transitively visible macro would have similar effects).
Strictly speaking, a conforming C++ Standard Library should provide any such
macros as functions instead (via <cstdio>). However, there are some "library"
functions which are not part of the standard, and thus not subject to this
rule (fopen64, for example). So, in order to be both portable and consistent,
the enum should not use the bare function names.
The old enum naming used a namespace LibFunc and an enum Func, with bare
enumerators. This patch changes LibFunc to be an enum with enumerators prefixed
with "LibFFunc_". (Unfortunately, a scoped enum is not sufficient to override
macros.)
There are additional changes required in clang.
Reviewers: rsmith
Subscribers: mehdi_amini, mzolotukhin, nemanjai, llvm-commits
Differential Revision: https://reviews.llvm.org/D28476
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292848 91177308-0d34-0410-b5e6-96231b3b80d8
r292188 confused MSVC because of the combined lack of a default
case and return statement.
Move the unreachable outside of the NumLibFuncs case, to make it
obvious that all cases should be handled.
llvm_unreachable is __declspec(noreturn), so I'm assuming this
does appease MSVC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292246 91177308-0d34-0410-b5e6-96231b3b80d8
This is another step towards unifying all LibFunc prototype checks.
This work started in r267758 (D19469); add the remaining checks.
Also add a unittest that checks each libfunc declared with a known-valid
and known-invalid prototype. New libfuncs added in the future are
required to have prototype checking in place; the known-valid test will
fail otherwise.
Differential Revision: https://reviews.llvm.org/D28030
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292188 91177308-0d34-0410-b5e6-96231b3b80d8
analyses to have a common type which is enforced rather than using
a char object and a `void *` type when used as an identifier.
This has a number of advantages. First, it at least helps some of the
confusion raised in Justin Lebar's code review of why `void *` was being
used everywhere by having a stronger type that connects to documentation
about this.
However, perhaps more importantly, it addresses a serious issue where
the alignment of these pointer-like identifiers was unknown. This made
it hard to use them in pointer-like data structures. We were already
dodging this in dangerous ways to create the "all analyses" entry. In
a subsequent patch I attempted to use these with TinyPtrVector and
things fell apart in a very bad way.
And it isn't just a compile time or type system issue. Worse than that,
the actual alignment of these pointer-like opaque identifiers wasn't
guaranteed to be a useful alignment as they were just characters.
This change introduces a type to use as the "key" object whose address
forms the opaque identifier. This both forces the objects to have proper
alignment, and provides type checking that we get it right everywhere.
It also makes the types somewhat less mysterious than `void *`.
We could go one step further and introduce a truly opaque pointer-like
type to return from the `ID()` static function rather than returning
`AnalysisKey *`, but that didn't seem to be a clear win so this is just
the initial change to get to a reliably typed and aligned object serving
is a key for all the analyses.
Thanks to Richard Smith and Justin Lebar for helping pick plausible
names and avoid making this refactoring many times. =] And thanks to
Sean for the super fast review!
While here, I've tried to move away from the "PassID" nomenclature
entirely as it wasn't really helping and is overloaded with old pass
manager constructs. Now we have IDs for analyses, and key objects whose
address can be used as IDs. Where possible and clear I've shortened this
to just "ID". In a few places I kept "AnalysisID" to make it clear what
was being identified.
Differential Revision: https://reviews.llvm.org/D27031
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287783 91177308-0d34-0410-b5e6-96231b3b80d8
The initialize function has an early return for AMDGPU targets. If taken,
the ShouldExtI32* initialization code will not be executed, resulting in
invalid values in the corresponding fields. Fix this by moving the code
to the top of the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287570 91177308-0d34-0410-b5e6-96231b3b80d8
