Simply perform additional report_context() calls after a report()
instead of adding more and more overloaded variations of report(). Also
improve several instances where information was output in an ad-hoc way
probably because no matching report() overload was available.
llvm-svn: 252552
Be honest about using iterator semantics in `SlotIndex::getNextSlot()`
and `SlotIndex::getPrevSlot()`. Instead of calling `getNextNode()` --
which is documented (but fails) to check for the sentinel -- call
`&*++getIterator()`.
This is (surprisingly!) a NFC commit. `ilist_traits<IndexListEntry>`
has an `ilist_half_node<IndexListEntry>` as a sentinel (and no other
fields), and so the layout of `ilist<IndexListEntry>` is:
--
struct ilist<IndexListEntry> {
ilist_half_node<IndexListEntry> Sentinel;
IndexListEntry *Head;
IndexListEntry *getHead() { return Head; }
IndexListEntry *getSentinel() { return cast<...>(&Sentinel); }
};
--
In memory, this happens to look just like:
--
struct ilist<IndexListEntry> {
ilist_node<IndexListEntry> Sentinel;
IndexListEntry *getHead() { return Sentinel.getNext(); }
IndexListEntry *getSentinel() { return cast<...>(&Sentinel); }
};
--
As a result, `ilist_node<IndexListEntry>::getNextNode()` that checks
`getNext()` of the possible sentinel will get a pointer to the head of
the list; it will never detect the sentinel, and will return the
sentinel itself instead of `nullptr` in the special cases.
Since `getNextNode()` and `getPrevNode()` don't work, just be honest
that we're not checking for the end/beginning of the list here. Since
this code works, I guess we must never go past the sentinel.
(It's possible we're just getting lucky, and the new code will get
"lucky" in the same situations. To properly fix that hypothetical bug,
we would need to check the iterator against `end()`/`begin()`.)
llvm-svn: 252538
SCEVUnionPredicate is copied constructed here: lib/Transforms/Scalar/LoopDistribute.cpp:793
and move assigned (which can use the base class's copy ctor just
fine/without extra cost (I'd add it if it weren't for MSVC's issues
meaning = default is insufficient)) here: lib/Transforms/Utils/LoopVersioning.cpp:46
llvm-svn: 252537
This is a prerequisite for further optimisations of these functions,
which will be commited as a separate patch.
Differential Revision: http://reviews.llvm.org/D14219
llvm-svn: 252535
Summary:
This patch does a couple of things:
- Adds a new argument `--shared-mode` which accepts a list of components and prints whether or not the provided components need to be linked statically or shared.
- Fixes `--libnames` when CMake BUILD_SHARED_LIBS is used.
- Fixes `--libnames`, `--libs`, and `--libfiles` for dylib when static components aren't installed.
- Fixes `--libnames`, `--libs`, `--libfiles`, and `--components` to use LLVM_DYLIB_COMPONENTS as the component manifest for dylib linking.
- Uses the host platform's usual convention for filename extensions and such, instead of always defaulting to Unix-izms.
Because I don't own a Mac, I am not able to test the Mac platform dependent stuff locally. If someone would be willing to run a build for me on their machine (unless there's a better option), I'd appreciate it.
Reviewers: jfb, brad.king, whitequark, beanz
Subscribers: beanz, jauhien, llvm-commits
Differential Revision: http://reviews.llvm.org/D13198
llvm-svn: 252532
The motivation for this patch starts with the epic fail example in PR18007:
https://llvm.org/bugs/show_bug.cgi?id=18007
...unfortunately, this patch makes no difference for that case, but it solves some
simpler cases. We'll get there some day. :)
The current 'or' matching code was using computeKnownBits() via
isBaseWithConstantOffset() -> MaskedValueIsZero(), but that's an unnecessarily limited use.
We can do more by copying the logic in ValueTracking's haveNoCommonBitsSet(), so we can
treat the 'or' as if it was an 'add'.
There's a TODO comment here because we should lift the bit-checking logic into a helper
function, so it's not duplicated in DAGCombiner.
An example of the better LEA matching:
leal (%rdi,%rdi), %eax
andl $1, %esi
orl %esi, %eax
Becomes:
andl $1, %esi
leal (%rsi,%rdi,2), %eax
Differential Revision: http://reviews.llvm.org/D13956
llvm-svn: 252515
For some reason we'd never run MachineVerifier on WinEH code, and you
explicitly have to ask for it with llc. I added it to a few test cases
to get some coverage.
Fixes PR25461.
llvm-svn: 252512
This patch makes ASAN for aarch64 use the same shadow offset for all
currently supported VMAs (39 and 42 bits). The shadow offset is the
same for 39-bit (36). Similar to ppc64 port, aarch64 transformation
also requires to use an add instead of 'or' for 42-bit VMA.
llvm-svn: 252495
Summary: Call instructions that are from the same line and same basic block needs to have separate discriminators to distinguish between different callsites.
Reviewers: davidxl, dnovillo, dblaikie
Subscribers: dblaikie, probinson, llvm-commits
Differential Revision: http://reviews.llvm.org/D14464
llvm-svn: 252492
When GlobalOpt splits an internal, global variable with an aggregate type, it
should propagate the externally_initialized flag to the newly created globals.
This makes the pass safe for our downstream use of this flag, while still
allowing some useful optimisations (such as removing dead parts of the split
aggregate) to be performed.
Differential Revision: http://reviews.llvm.org/D13382
llvm-svn: 252490
Implemented as many of Michael's suggestions as were possible:
* clang-format the added code while it is still fresh.
* tried to change Value* to Instruction* in many places in computeMinimumValueSizes - unfortunately there are several places where Constants need to be handled so this wasn't possible.
* Reduce the pass list on loop-vectorization-factors.ll.
* Fix a bug where we were querying MinBWs for I->getOperand(0) but using MinBWs[I].
llvm-svn: 252469
Summary:
LAA currently generates a set of SCEV predicates that must be checked by users.
In the case of Loop Distribute/Loop Load Elimination, no such predicates could have
been emitted, since we don't allow stride versioning. However, in the future there
could be SCEV predicates that will need to be checked.
This change adds support for SCEV predicate versioning in the Loop Distribute, Loop
Load Eliminate and the loop versioning infrastructure.
Reviewers: anemet
Subscribers: mssimpso, sanjoy, llvm-commits
Differential Revision: http://reviews.llvm.org/D14240
llvm-svn: 252467
Summary:
This matches the sum-of-absdiff patterns emitted by the vectoriser using log2 shuffles.
Relies on D14207 to be able to match the `extract_subvector(..., 0)`
Reviewers: t.p.northover, jmolloy
Subscribers: aemerson, llvm-commits, rengolin
Differential Revision: http://reviews.llvm.org/D14208
llvm-svn: 252465
Summary:
Lowering this pattern early to an `EXTRACT_SUBREG` was making it impossible to match larger patterns in tblgen that use `extract_subvector(..., 0)` as part of the their input pattern.
It seems like there will exist somewhere a better way of specifying this pattern over all relevant register value types, but I didn't manage to find it.
Reviewers: t.p.northover, jmolloy
Subscribers: aemerson, llvm-commits, rengolin
Differential Revision: http://reviews.llvm.org/D14207
llvm-svn: 252464
"GCC requires the freestanding environment provide memcpy, memmove, memset
and memcmp": https://gcc.gnu.org/onlinedocs/gcc-5.2.0/gcc/Standards.html
Hence in GNUEABI targets LLVM should not convert 'memops' to their equivalent
'__aeabi_memops'. This convertion violates GCC contract.
The -meabi flag controls whether or not LLVM will modify 'memops' in GNUEABI
targets.
Without -meabi: use the triple default EABI.
With -meabi=default: use the triple default EABI.
With -meabi=gnu: use 'memops'.
With -meabi=4 or -meabi=5: use '__aeabi_memops'.
With -meabi set to an unknown value: same as -meabi=default.
Patch by Vinicius Tinti.
llvm-svn: 252462
We don't currently have any runtime library functions for operations on
f16 values (other than conversions to and from f32 and f64), so we
should always promote it to f32, even if that is not a legal type. In
that case, the f32 values would be softened to f32 library calls.
SoftenFloatRes_FP_EXTEND now needs to check the promoted operand's type,
as it may ne a no-op or require a different library call.
getCopyFromParts and getCopyToParts now need to cope with a
floating-point value stored in a larger integer part, as is the case for
any target that needs to store an f16 value in a 32-bit integer
register.
Differential Revision: http://reviews.llvm.org/D12856
llvm-svn: 252459
Summary: Mimic parseTriple(); and exposes it to LTOModule.cpp
Reviewers: dexonsmith, rafael
Subscribers: llvm-commits
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 252442
