We now support "Linux" and "Stroustrup" brace breaking styles, which
gets us one step closer to support formatting WebKit, KDE & Linux code.

Linux brace breaking style:
namespace a
{
class A
{
  void f()
  {
    if (x) {
      f();
    } else {
      g();
    }
  }
}
}

Stroustrup brace breaking style:
namespace a {
class A {
  void f()
  {
    if (x) {
      f();
    } else {
      g();
    }
  }
}
}

llvm-svn: 181700

Thanks to Kim Gräsman for help!

llvm-svn: 181699

llvm-svn: 181698

Original patch by Abdoulaye Walsimou Gaye.

llvm-svn: 181697

return values are bitcasts.

The chain had previously been being clobbered with the entry node to
the dag, which sometimes caused other code in the function to be
erroneously deleted when tailcall optimization kicked in.

<rdar://problem/13827621>

llvm-svn: 181696

llvm-svn: 181695

Add a new constructor with ConstString (and not only const char *). Hopefully fixes the build of lldb

llvm-svn: 181694

This is required for kernel linux kernel style formatting.

llvm-svn: 181693

Fake parentheses (i.e. emulated parentheses used to correctly handle
binary expressions) used to prevent the optimization implemented in
r180264.

llvm-svn: 181692

This is required for various styles that are for example based on
8-indent.

llvm-svn: 181690

read in asserts.

llvm-svn: 181689

This seems to be the vastly more common case. If we find enough
examples to the contrary, we can make it smarter.

Before: #define MACRO void f(int * a)
After:  #define MACRO void f(int *a)
llvm-svn: 181687

llvm-svn: 181685

llvm-svn: 181684

llvm-svn: 181683

llvm-svn: 181682

llvm-svn: 181681

It was just a less powerful and more confusing version of
MCCFIInstruction. A side effect is that, since MCCFIInstruction uses
dwarf register numbers, calls to getDwarfRegNum are pushed out, which
should allow further simplifications.

I left the MachineModuleInfo::addFrameMove interface unchanged since
this patch was already fairly big.

llvm-svn: 181680

llvm-svn: 181679

llvm-svn: 181678

This patch renames getLinkage to getLinkageInternal. Only code that
needs to handle UniqueExternalLinkage specially should call this.

Linkage, as defined in the c++ standard, is provided by
getFormalLinkage. It maps UniqueExternalLinkage to ExternalLinkage.

Most places in the compiler actually want isExternallyVisible, which
handles UniqueExternalLinkage as internal.

llvm-svn: 181677

optimizations -- in particular, globalopt will remove calls to ::operator
new(size_t) that did not come from new-expressions.

llvm-svn: 181676

type returns a lambda defined within itself. The computation of linkage for the
function looked at the linkage of the lambda, and vice versa.

This is solved by not checking whether an 'auto' in a function return type
deduces to a type with unique external linkage. We don't need this check,
because the type deduced for 'auto' doesn't affect whether two
otherwise-identical declarations would name different functions, so we don't
need to give an ostensibly external-linkage function internal linkage for this
reason. (We also don't need unique-external linkage in C++11 onwards at all,
but that's not implemented yet.)

llvm-svn: 181675

The external user does not have to be in lane #0. We have to save the lane for each scalar so that we know which vector lane to extract.

llvm-svn: 181674

SLPVectorizer: Clear the map that maps between scalars to vectors after each round of vectorization.
Testcase in the next commit.

llvm-svn: 181673

llvm-svn: 181672

inefficient; we perform a linear scan of switch labels to find the one matching
the condition, and then walk the body looking for that label. Both parts should
be straightforward to optimize.

llvm-svn: 181671

completes the implementation of N3638.

llvm-svn: 181669

There are two transforms in visitUrem that conflict with each other.

*) One, if a divisor is a power of two, subtracts one from the divisor
   and turns it into a bitwise-and.
*) The other unwraps both operands if they are surrounded by zext
   instructions.

Flipping the order allows the subtraction to go beneath the sign
extension.

llvm-svn: 181668

Use the widest induction type encountered for the cannonical induction variable.

We used to turn the following loop into an empty loop because we used i8 as
induction variable type and truncated 1024 to 0 as trip count.

int a[1024];
void fail() {
  int reverse_induction = 1023;
  unsigned char forward_induction = 0;
  while ((reverse_induction) >= 0) {
    forward_induction++;
    a[reverse_induction] = forward_induction;
    --reverse_induction;
  }
}

radar://13862901

llvm-svn: 181667

No functionality change intended.

llvm-svn: 181666

No functionality change intended.

llvm-svn: 181665

(review feedback on r181632 from Dmitri)

llvm-svn: 181664

llvm-svn: 181663

Adding attributes to a uniqued set has become expensive, don't do it more often
than necessary. No functionality change.

llvm-svn: 181662

Use isKnownToBeAPowerOfTwo in visitUrem so that we may more aggressively
fold away urem instructions.

llvm-svn: 181661

llvm-svn: 181660

we loaded from PCH, if we're building another PCH, create an update record to
patch the return type of the earlier declaration.

llvm-svn: 181659

names when specifying the DynamicLoaderDarwinKernel.

ProcessGDBRemote wasn't setting the dyld string any more; remove
the remaining code tracking the dyld plugin name altogether from
that process plugin.

llvm-svn: 181658

To add a frame now there is a dedicated addFrameMove which also takes
care of constructing the move itself.

llvm-svn: 181657