Add support for trimming a single kind of character from a StringRef.
This makes the common case of trimming null bytes much neater. It's also
probably a bit speedier too, since it avoids creating a std::bitset in
find_{first,last}_not_of.
llvm-svn: 260925
This patch avoids the initial memset at the cost of making iterators
slightly more complex. This should be beneficial as most SmallPtrSets
hold no or only a few elements, while iterating over them is less
common.
Differential Revision: http://reviews.llvm.org/D16672
llvm-svn: 260913
As support expands to more runtimes, we'll need to
distinguish between more than just HSA and unknown.
This also lets us stop using unknown everywhere.
llvm-svn: 260790
This reverts commit r260458.
It was backported on an internal branch and broke stage2 build. Since
this can lead to weird random crash I'm reverting upstream as well
while investigating.
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 260605
Summary:
Just like the existing find_as() method, the new insert_as() accepts
an extra parameter which is used as a key to find the bucket in the
map.
When creating a Constant, we want to check the map before actually
creating the object. In this case we have to perform two queries to
the map, and this extra parameter can save recomputing the hash value
for the second query.
Reviewers: dexonsmith, chandlerc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D16268
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 260458
These sets do linear searching in small mode; It is not a good idea to
use huge numbers as the small value here, save people from themselves by
adding a static_assert.
Differential Revision: http://reviews.llvm.org/D16706
llvm-svn: 259419
Various bits we want to use the new ABI actually compile with "-arch armv7k
-miphoneos-version-min=9.0". Not ideal, but also not ridiculous given how
slices work.
llvm-svn: 258975
Most of the time we only hit the small case, so it is beneficial to pull
it out of the insert_imp() implementation. This improves compile time
at least for non-LTO builds.
Differential Revision: http://reviews.llvm.org/D16619
llvm-svn: 258908
Summary: Helper so we don't have to enumerate nvptx && nvptx64 everywhere.
Reviewers: echristo
Subscribers: llvm-commits, jhen, tra
Differential Revision: http://reviews.llvm.org/D16494
llvm-svn: 258639
Summary:
The problem here is that an enum class can not be implicitly converted to an
integer. That assumption snuck back into PointerIntPair. This commit fixes the
issue and more importantly adds some unittests to make sure that we do not break
this again.
rdar://23594806
Reviewers: gribozavr
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D16131
llvm-svn: 257574
MSVC seems to have problems looking up Value inside of the template. Not
really sure whether that's a bug there or Clang and GCC being too
permissive.
llvm-svn: 257288
type.
This makes it easy and safe to use a set of flags as one elmenet of
a tagged union with pointers. There is quite a bit of code that has
historically done this by casting arbitrary integers to "pointers" and
assuming that this was safe and reliable. It is neither, and has started
to rear its head by triggering safety asserts in various abstractions
like PointerLikeTypeTraits when the integers chosen are invariably poor
choices for *some* platform and *some* situation. Not to mention the
(hopefully unlikely) prospect of one of these integers actually getting
allocated!
With this, it will be straightforward to build type safe abstractions
like this without being error prone. The abstraction itself is also
remarkably simple thanks to the implicit conversion.
This use case and pattern was also independently created by the folks
working on Swift, and they're going to incrementally add any missing
functionality they find.
Differential Revision: http://reviews.llvm.org/D15844
llvm-svn: 257284
This is a much more general and powerful form of PointerUnion. It
provides a reasonably complete sum type (from type theory) for
pointer-like types. It has several significant advantages over the
existing PointerUnion infrastructure:
1) It allows more than two pointer types to participate without awkward
nesting structures.
2) It directly exposes the tag so that it is convenient to write
switches over the possible members.
3) It can re-use the same type for multiple tag values, something that
has been worked around by either abusing PointerIntPair or defining
nonce types and doing unsafe pointer casting.
4) It supports customization of the PointerLikeTypeTraits used for
specific member types. This means it could (in theory) be used even
with types that are over-aligned on allocation to expose larger
numbers of bits to the tag.
All in all, I think it is at least complimentary to the existing
infrastructure, and a strict improvement for some use cases.
Differential Revision: http://reviews.llvm.org/D15843
llvm-svn: 257282
The new leader is known anyway so we can return it for some micro
optimization in code where it is easy to pass along the result to the
next join().
llvm-svn: 257130
to isolate it in a dependent helper class.
Without doing this, we end up requiring all of the pointer traits the
moment you even define a PointerIntPair. That makes them *incredibly*
hard to use, for example you can't use them at all inside a class for
pointers to that class!
This change sinks all the logic into a helper template class that only
needs to be fully instantiated when *using* the PointerIntPair. We still
get compile-time checking, but it is deferred long enough to make
tradition out-of-line method definitions (or just the normal deferred
method body parsing) sufficient to handle cycling references.
llvm-svn: 256618
Add ARMv8.2-A to TargetParser, so that it can be used by the clang
command-line options and the .arch directive.
Most testing of this will be done in clang, checking that the
command-line options that this enables work.
Differential Revision: http://reviews.llvm.org/D15037
llvm-svn: 254400
This just concatenates the common DWP sections without doing any of the
fancy DWP things like:
1) update str_offsets
2) deduplicating strings
3) merging/creating cu/tu_index
Patches for these will follow shortly.
(also not sure about target triple/object file type for this tool - do I
really need a whole triple just to write an object file that contains
purely static/hardcoded bytes in each section? & I guess I should just
pick it based on the first input, maybe, rather than hardcoding for now
- but we only produce .dwo on ELF platforms with objcopy for now anyway)
llvm-svn: 254355
We use to have an odd difference among MapVector and SetVector. The map
used a DenseMop, but the set used a SmallSet, which in turn uses a
std::set.
I have changed SetVector to use a DenseSet. If you were depending on the
old behaviour you can pass an explicit set type or use SmallSetVector.
The common cases for needing to do it are:
* Optimizing for small sets.
* Sets for types not supported by DenseSet.
llvm-svn: 253439
Useful utility function; this wasn't too hard to do before, but also wasn't
obviously discoverable. Make it explicit. Reviewed offline by Michael
Gottesman.
llvm-svn: 253254
Summary:
Document the differences between the isKnownWindowsMSVC() and isWindowsMSVC() methods on Triple.
Also removed the '\brief' Doxygen annotations - now that 'AUTOBRIEF' is set to on, they are unnecessary.
Subscribers: jfb, tberghammer, danalbert, srhines, dschuff
Differential Revision: http://reviews.llvm.org/D14110
llvm-svn: 253159
