Add a sentence that says that the type argument can refer to
either the type of a result, or that of an operand.
Review: Eli Friedman.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292584 91177308-0d34-0410-b5e6-96231b3b80d8
Calling reset() on an empty BitVector would call memset with a nullptr
argument which is undefined behaviour.
This should fix the sanitizer bot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292575 91177308-0d34-0410-b5e6-96231b3b80d8
loops in a function.
These are relatively confusing to talk about and compute correctly so it
seems really good to write down their implementation in one place. I've
replaced one place we needed this in the loop PM infrastructure and
I have another place in a pending patch that wants it.
We can't quite use this for the core loop PM walk because there we're
sometimes working on a sub-forest.
I'll add the expected unittests before committing this but wanted to
make sure folks were happy with these names / comments.
Credit goes to Richard Smith for the idea for naming the order where siblings
are in reverse program order but the tree traversal remains preorder.
Differential Revision: https://reviews.llvm.org/D28932
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292569 91177308-0d34-0410-b5e6-96231b3b80d8
Inline spiller can decide to move a spill as early as possible in the basic block.
It will skip phis and label, but we also need to make sure it skips instructions
in the basic block prologue which restore exec mask.
Added isPositionLike callback in TargetInstrInfo to detect instructions which
shall be skipped in addition to common phis, labels etc.
Differential Revision: https://reviews.llvm.org/D27997
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292554 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Fence instructions are currently marked as `ModRef` for all memory locations.
We can improve this for constant memory locations (such as constant globals),
since fence instructions cannot modify these locations.
This helps us to forward constant loads across fences (added test case in GVN).
There were no changes in behaviour for similar test cases in early-cse and licm.
Reviewers: dberlin, sanjoy, reames
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D28914
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292546 91177308-0d34-0410-b5e6-96231b3b80d8
This function can be used to accumulate the set of all read and modified
register in a sequence of instructions.
Use this code in AArch64A57FPLoadBalancing::scavengeRegister() to prove
the concept.
- The AArch64A57LoadBalancing code is using a backwards analysis now
which is irrespective of kill flags. This is the main motivation for
this change.
Differential Revision: http://reviews.llvm.org/D22082
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292543 91177308-0d34-0410-b5e6-96231b3b80d8
This is a set of register units intended to track register liveness, it
is similar in spirit to LivePhysRegs.
You can also think of this as the liveness tracking parts of the
RegisterScavenger factored out into an own class.
This was proposed in http://llvm.org/PR27609
Differential Revision: http://reviews.llvm.org/D21916
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292542 91177308-0d34-0410-b5e6-96231b3b80d8
This was being parsed / serialized ad-hoc inside the code
for a specific PDB stream. But this data structure is used
in multiple ways / places within the PDB format. To be able
to re-use it we need to raise this code out and make it more
generic. In doing so, a number of bugs are fixed in the
original implementation, and support is added for growing
the hash table and deleting items from the hash table,
which had either been omitted or incorrect implemented in
the initial version.
Differential Revision: https://reviews.llvm.org/D28715
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292535 91177308-0d34-0410-b5e6-96231b3b80d8
It describes a region of arbitrary data included in a Mach-O file.
Its initial use is to record extra data in MH_CORE files.
rdar://30001545
rdar://30001731
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292500 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Adds a RegisterBank tablegen class that can be used to declare the register
banks and an associated tablegen pass to generate the necessary code.
Changes since first commit attempt:
* Added missing guards
* Added more missing guards
* Found and fixed a use-after-free bug involving Twine locals
Reviewers: t.p.northover, ab, rovka, qcolombet
Reviewed By: qcolombet
Subscribers: aditya_nandakumar, rengolin, kristof.beyls, vkalintiris, mgorny, dberris, llvm-commits, rovka
Differential Revision: https://reviews.llvm.org/D27338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292478 91177308-0d34-0410-b5e6-96231b3b80d8
Type identifiers are exported by:
- Adding coarse-grained information about how to test the type
identifier to the summary.
- Creating symbols in the object file (aliases and absolute symbols)
containing fine-grained information about the type identifier.
Differential Revision: https://reviews.llvm.org/D28424
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292462 91177308-0d34-0410-b5e6-96231b3b80d8
- Fix doxygen comments: Do not repeat name, remove duplicated doxygen
comment (on declaration + implementation), etc.
- Use more range based for
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292455 91177308-0d34-0410-b5e6-96231b3b80d8
Mostly straightforward changes; we just didn't do the computation before.
One sort of interesting change in LoopUnroll.cpp: we weren't handling
dominance for children of the loop latch correctly, but
foldBlockIntoPredecessor hid the problem for complete unrolling.
Currently punting on loop peeling; made some minor changes to isolate
that problem to LoopUnrollPeel.cpp.
Adds a flag -unroll-verify-domtree; it verifies the domtree immediately
after we finish updating it. This is on by default for +Asserts builds.
Differential Revision: https://reviews.llvm.org/D28073
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292447 91177308-0d34-0410-b5e6-96231b3b80d8
An ELFObjectFile can now create SubtargetFeatures from the available
ARM build attributes, in a similar manner to MIPS. I've moved the
MIPS code into its own function and the ARM handler also has a
separate function.
Differential Revision: https://reviews.llvm.org/D28291
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292403 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Adds a RegisterBank tablegen class that can be used to declare the register
banks and an associated tablegen pass to generate the necessary code.
Changes since last commit:
The new tablegen pass is now correctly guarded by LLVM_BUILD_GLOBAL_ISEL and
this should fix the buildbots however it may not be the whole fix. The previous
buildbot failures suggest there may be a memory bug lurking that I'm unable to
reproduce (including when using asan) or spot in the source. If they re-occur
on this commit then I'll need assistance from the bot owners to track it down.
Reviewers: t.p.northover, ab, rovka, qcolombet
Reviewed By: qcolombet
Subscribers: aditya_nandakumar, rengolin, kristof.beyls, vkalintiris, mgorny, dberris, llvm-commits, rovka
Differential Revision: https://reviews.llvm.org/D27338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292367 91177308-0d34-0410-b5e6-96231b3b80d8
Enable an ELFObjectFile to read the its arm build attributes to
produce a target triple with a specific ARM architecture.
llvm-objdump now uses this functionality to automatically produce
a more accurate target.
Differential Revision: https://reviews.llvm.org/D28769
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292366 91177308-0d34-0410-b5e6-96231b3b80d8
The grow_memory instruction now returns the previous memory size. Add the
return type to the LLVM intrinsic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292322 91177308-0d34-0410-b5e6-96231b3b80d8
Jonas Paulsson
Matthias Braun
Chandler Carruth
Stanislav Mekhanoshin
Anna Thomas
Zachary Turner
Chad Rosier
Easwaran Raman
Kevin Enderby
Daniel Sanders
Peter Collingbourne
Dehao Chen
Eli Friedman
Justin Bogner
Sam Parker
Dan Gohman
Eugene Zelenko