llvm-svn: 241021

llvm-svn: 241020

llvm-svn: 241019

Specifically, remove the dependent library interface and replace the existing
linker option interface with a new one that returns a single list of flags.

Differential Revision: http://reviews.llvm.org/D10820

llvm-svn: 241018

It is meant to be used to record modules @imported by the current
compile unit, so a debugger an import the same modules to replicate this
environment before dropping into the expression evaluator.

DIModule is a sibling to DINamespace and behaves quite similarly.
In addition to the name of the module it also records the module
configuration details that are necessary to uniquely identify the module.
This includes the configuration macros (e.g., -DNDEBUG), the include path
where the module.map file is to be found, and the isysroot.

The idea is that the backend will turn this into a DW_TAG_module.

http://reviews.llvm.org/D9614
rdar://problem/20965932

llvm-svn: 241017

Add all the new `Metadata` codes since LLVM 3.6, and at the same time
follow the precedent set in other blocks by removing the `METADATA_`
prefix from the string output.

llvm-svn: 241016

I'm about to add a whack of missing names for metadata.  Add a macro to
make this easier.

llvm-svn: 241015

This reverts commit a4f5f4da7e164b7ac358a75f2e4254c25718ad4b.
This test fails 100% with gcc4.9.2, revert it first. Will find out why xfail is overruled by xflaky.

llvm-svn: 241014

llvm-svn: 241013

Reapplies r241005 after fixing the build on non-Mac platforms. Original
commit message below.

The hostname can be very unstable when there are many machines on the
network competing for the same name. Using the hardware UUID makes it
less likely to have collisions or to consider files written by the
current host to be owned by a different one at a later time.

rdar://problem/21512307

llvm-svn: 241012

llvm-svn: 241011

This change unifies how LTOModule and the backend obtain linker flags
for globals: via a new TargetLoweringObjectFile member function named
emitLinkerFlagsForGlobal. A new function LTOModule::getLinkerOpts() returns
the list of linker flags as a single concatenated string.

This change affects the C libLTO API: the function lto_module_get_*deplibs now
exposes an empty list, and lto_module_get_*linkeropts exposes a single element
which combines the contents of all observed flags. libLTO should never have
tried to parse the linker flags; it is the linker's job to do so. Because
linkers will need to be able to parse flags in regular object files, it
makes little sense for libLTO to have a redundant mechanism for doing so.

The new API is compatible with the old one. It is valid for a user to specify
multiple linker flags in a single pragma directive like this:

 #pragma comment(linker, "/defaultlib:foo /defaultlib:bar")

The previous implementation would not have exposed
either flag via lto_module_get_*deplibs (as the test in
TargetLoweringObjectFileCOFF::getDepLibFromLinkerOpt was case sensitive)
and would have exposed "/defaultlib:foo /defaultlib:bar" as a single flag via
lto_module_get_*linkeropts. This may have been a bug in the implementation,
but it does give us a chance to fix the interface.

Differential Revision: http://reviews.llvm.org/D10548

llvm-svn: 241010

llvm-svn: 241009

llvm-svn: 241008

Broke non-Mac builds.

This reverts commit r241005.

llvm-svn: 241007

Usually -lpthread is included due to LLVM link options,
but when LLVM threading is disabled, this does not happen.
pthread is still needed however because LLDB uses threading
regardless of whether LLVM is built with threading support or not.

Differential Revision: http://reviews.llvm.org/D5431

llvm-svn: 241006

The hostname can be very unstable when there are many machines on the
network competing for the same name. Using the hardware UUID makes it
less likely to have collisions or to consider files written by the
current host to be owned by a different one at a later time.

rdar://problem/21512307

llvm-svn: 241005

llvm-svn: 241004

When the store sequence being combined actually stores the base register, we
should not mark it as killed until the end.

rdar://21504262

llvm-svn: 241003

This is a new version of http://reviews.llvm.org/D10260.

It turned out that when you specify an integer register in inline asm on
x86 you get the register of the required type size back. That means that
X86TargetLowering::getRegForInlineAsmConstraint() has to accept any of
the integer registers and adapt its size to the given target size which
may be any 8/16/32/64 bit sized type. Surprisingly that means given a
constraint of "{ax}" and a type of MVT::F32 we need to return X86::EAX.

This change makes this face explicit, the previous code seemed like
working by accident because there it never returned an error once a
register was found. On the other hand this rewrite allows to actually
return errors for invalid situations like requesting an integer register
for an i128 type.

Related to rdar://21042280

Differential Revision: http://reviews.llvm.org/D10813

llvm-svn: 241002

its members into the base class.

First, to help motivate this kind of change, understand that in
a self-link, LLD creates 5.5 million defined regular symbol bodies (and
6 million symbol bodies total). A significant portion of its time is
spent allocating the memory for these symbols, and befor ethis patch
the defined regular symbol body objects alone consumed some 420mb of
memory during the self link.

As a consequence, I think it is worth expending considerable effort to
make these objects as memory efficient as possible. This is the first of
several components of that. This change starts with the goal of removing
the virtual functins from SymbolBody so that it can avoid having a vptr
embedded in it when it already contains a "kind" member, and that member
can be much more compact than a vptr.

The primary way of doing this is to sink as much of the logic that we
would have to dispatch for into data in the base class. As part of this,
I made the various flags bits that will pack into a bitfield with the
kind tag. I also sank the Name down to eliminate the dispatch for that,
and used LLVM's RTTI-style dispatch for everything else (most of which
is cold and so doesn't matter terribly if we get minutely worse lowering
than a vtable dispatch).

As I was doing this, I wanted to make the RTTI-dispatch (which would
become much hotter than before) as efficient as possible, so I've
re-organized the tags somewhat. Notably, the common case (regular
defined symbols) is now zero which we can test for faster.

I also needed to rewrite the comparison routine used during resolving
symbols. This proved to be quite complex as the semantics of the
existing one were very subtle due to the back-and-forth virtual dispatch
caused by re-dispatching with reversed operands. I've consolidated it to
a single function and tried to comment it quite a bit more to help
explain what is going on. However, this may need more comments or other
explanations. It at least passes all the regression tests. I'm not
working on Windows, so I can't fully test it.

With all of these changes, the size of a DefinedRegular symbol on
a 64-bit build goes from 80 bytes to 64 bytes, and we save approximately
84mb or 20% of the memory consumed by these symbol bodies during the
link.

The link time appears marginally faster as well, and the profile hotness
of the memory allocation subsystem got a bit better, but there is still
a lot of allocation traffic.

Differential Revision: http://reviews.llvm.org/D10792

llvm-svn: 241001

This uses a single cast and test to get the section for the symbol, and
uses the cast_or_null<> pattern throughout to handle the known type but
unknown non-null-ness.

No functionality changed.

Differential Revision: http://reviews.llvm.org/D10791

llvm-svn: 241000

Set debug location for terminator instruction in loop backedge block
(which is an unconditional jump to loop header). We can't copy debug
location from original backedges, as there can be several of them,
with different debug info locations. So, we follow the approach of
SplitBlockPredecessors, and copy the debug info from first non-PHI
instruction in the header (i.e. destination block).

This is yet another change for PR23837.

llvm-svn: 240999

implicit-null-check-negative.ll had a missing 2>&1.  Fix this, and
remove an incorrect test case that this exposes.

llvm-svn: 240998

llvm-svn: 240997

I doesn't depend on the object anymore.

llvm-svn: 240996

This flattens the entire liveness walk from a recursive mark approach to
a worklist approach. It also sinks the worklist management completely
out of the SectionChunk and into the Writer by exposing the ability to
iterato over children of a chunk and over the symbol bodies of relocated
symbols. I'm not 100% happy with the API names, so suggestions welcome
there.

This allows us to use a single worklist for the entire recursive walk
and would also be a natural place to take advantage of parallelism at
some future point.

With this, we completely inline away the GC walk into the
Writer::markLive function and it makes it very easy to profile what is
slow. Currently, time is being wasted checking whether a Chunk isa
SectionChunk (it essentially always is), finding (or skipping)
a replacement for a symbol, and chasing pointers between symbols and
their chunks. There are a bunch of things we can do to fix this, and its
easier to do them after this change IMO.

This change alone saves 1-2% of the time for my self-link of lld.exe
(which I'm running and benchmarking on Linux ironically).

Perhaps more notably, we'll no longer blow out the stack for large
links. =]

Just as an FYI, at this point, I/O is starting to really dominate the
profile. Well over 10% of the time appears to be inside the kernel doing
page table silliness. I think a decent chunk of this can be nuked as
well, but it's a little odd as cross-linking in this way isn't really
the primary goal here.

Differential Revision: http://reviews.llvm.org/D10790

llvm-svn: 240995

This matches the implementation of the gcc support for the same
feature, including checking the values set up by libgcc at runtime.
The structure looks like this:

  unsigned int __cpu_vendor;
  unsigned int __cpu_type;
  unsigned int __cpu_subtype;
  unsigned int __cpu_features[1];

with a set of enums to match various fields that are field out after
parsing the output of the cpuid instruction.
This also adds a set of errors checking for valid input (and cpu).

compiler-rt support for this and the other builtins in this family
(__builtin_cpu_init and __builtin_cpu_is) are forthcoming.

llvm-svn: 240994

Make sure that SharingPtr.h appears in the LLDB.framework by making it a public header in the LLDB framework target.

This fixes test issues with building lldb/test/api/multithreaded and a few other tests that build against the LLDB.framework in our build directory.

llvm-svn: 240993

On Android L, TSD destructors run 8 times instead of 4.
Back to 4 times on the current master branch (as well as on K).

llvm-svn: 240992

Summary: This patch fixes the cases of sext/zext constant folding in DAG combiner where constans do not fit 64 bits. The fix simply removes un$

Test Plan: New regression test included.

Reviewers: RKSimon

Reviewed By: RKSimon

Subscribers: RKSimon, llvm-commits

Differential Revision: http://reviews.llvm.org/D10607

llvm-svn: 240991

Also simplify duplicated code a bit. No functionality change intended.

llvm-svn: 240990

We failed to see that we should have deferred the creation of a type
which references a type currently under construction because of atomic
sugar.

This fixes PR23985.

llvm-svn: 240989

- Avoid sending the qfThreadInfo, qsThreadInfo packets if we have a stop reply packet with the threads already (save 2 round trip packets)
- Include the qname, qserial and qkind in the JSON info
- Report the qname, qserial and qkind to the thread so it can cache it to avoid many packets on MacOSX and iOS
- Don't clear all discoverable settings when we exec, just the ones we need to saves 1-5 packets for each exec.

llvm-svn: 240988

llvm-svn: 240987

Summary: Adding the flag to C++ source files emits a warning, hence we set the compile flag depending on the file's language.

Reviewers: grosser

Subscribers: Meinersbur, pollydev, llvm-commits

Projects: #polly

Differential Revision: http://reviews.llvm.org/D10809

llvm-svn: 240986

At the suggestion of Chandler Carruth, I've removed the timestamp macro,
_KMP_BUILD_TIME, that cmake currently sets to "No_Timestamp" and replaced it with standard
__DATE__ and __TIME__ macros inside kmp_version.c.

llvm-svn: 240985

llvm-svn: 240984

Reviewers: clayborg

Reviewed By: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D10811

llvm-svn: 240983

method to get a SymbolBody and into the callers, and kill now dead
includes.

This removes the need to have the SymbolBody definition when we're
defining the inline method and makes it a better inline method. That was
the only reason for a lot of header includes here. Removing these and
using forward declarations actually uncovers a bunch of cross-header
dependencies that I've fixed while I'm here, and will allow me to
introduce some *important* inline code into Chunks.h that requires the
definition of ObjectFile.

No functionality changed at this point.

Differential Revision: http://reviews.llvm.org/D10789

llvm-svn: 240982