This removes the last of the linear searches over ranges of std::multimap
iterators, giving a 7% speedup on the doduc.bc input from PR15222.

No functionality change intended.

llvm-svn: 174859

This is another cleanup aimed at eliminating linear searches
in ranges of std::multimap.

No functionality change intended.

llvm-svn: 174858

Profiling suggests that getInstructionTypes is performance-sensitive,
this cleans up some double-casting in that function in favor of
using dyn_cast.

No functionality change intended.

llvm-svn: 174857

By itself, this does not have much of an effect, but only because in the default
configuration the full cycle checks are used only for small problem sizes.
This is part of a general cleanup of uses of iteration over std::multimap
ranges only for the purpose of checking membership.

No functionality change intended.

llvm-svn: 174856

function is successfully handled by fast-isel. That's because function
arguments are *always* handled by SDISel. Introduce FastLowerArguments to
allow each target to provide hook to handle formal argument lowering.

As a proof-of-concept, add ARMFastIsel::FastLowerArguments to handle
functions with 4 or fewer scalar integer (i8, i16, or i32) arguments. It
completely eliminates the need for SDISel for trivial functions.

rdar://13163905

llvm-svn: 174855

llvm-svn: 174854

I have some uncommitted changes to the cast code that catch this sort of thing
at compile-time but I still need to do some other cleanup before I can enable
it.

llvm-svn: 174853

llvm-svn: 174852

support for updating SlotIndexes to MachineBasicBlock::SplitCriticalEdge(). This
calls renumberIndexes() every time; it should be improved to only renumber
locally.

llvm-svn: 174851

both LiveVariables and LiveIntervals.

llvm-svn: 174850

This reads the attribute groups. It currently doesn't do anything with them.

NOTE: In the commit to the bitcode writer, the format *may* change in the near
future. Which means that this code would also change.

llvm-svn: 174849

llvm-svn: 174848

llvm-svn: 174847

llvm-svn: 174846

This is some initial code for emitting the attribute groups into the bitcode.

NOTE: This format *may* change! Do not rely upon the attribute groups' bitcode
not changing.

llvm-svn: 174845

Attribute groups are essentially all AttributeSets which are used by the
program. Enumerate them here.

llvm-svn: 174844

The more general code for formatting ObjC method exprs does this and more,
it's no longer necessary to special-case this. No behavior change.

llvm-svn: 174843

As it turns out, this already works reasonably well.

This example from http://clang.llvm.org/docs/ObjectiveCLiterals.html
NSDictionary *dictionary = @{
    @"name" : NSUserName(),
    @"date" : [NSDate date],
    @"processInfo" : [NSProcessInfo processInfo]
};

is formatted like
NSDictionary *dictionary = @{ @"name" : NSUserName(), @"date" : [NSDate date],
                              @"processInfo" : [NSProcessInfo processInfo] };

There's already a FIXME in NestedStaticInitializers about supporting one
initializer per line, which is really all that's missing here too.

llvm-svn: 174842

(From http://clang.llvm.org/docs/ObjectiveCLiterals.html.)

llvm-svn: 174841

Before:
  @{
  foo:
    bar
  }
  ;

Now:
  @{ foo : bar };

parseBracedList() already does the right thing from an UnwrappedLineParser
perspective, so check for "@{" in all loops that process constructs that can
contain expressions and call parseBracedList() if found.

llvm-svn: 174840

llvm-svn: 174839

Apple's kernel engineers have been expecting this behavior even though
we've never implemented it before, as far as I can tell. In recent months,
clang has gotten better at using vector instructions to optimize memcpy-like
operations, and that has exposed problems when vector/floating-point
instructions are used in kexts that don't support that. This behavior also
matches what Apple's GCC did for PowerPC targets.

llvm-svn: 174838

llvm-svn: 174837

For x86 targets, we've been using the -msoft-float option to control passing
the no-implicit-float option to cc1. Since the -mno-implicit-float option is
now accepted by the driver, this just makes it work for x86 the same as it
does for ARM targets.

llvm-svn: 174836

llvm-svn: 174835

llvm-svn: 174834

llvm-svn: 174833

llvm-svn: 174832

present, it currently verifies them with the MachineVerifier, and this passed
all of the test cases in 'make check' (when accounting for existing verifier
errors). There were some assertion failures in the two-address pass, but they
also happened on code without phis and look like they are caused by different
kill flags from LiveIntervals.

The only part that doesn't work is the critical edge splitting heuristic,
because there isn't currently an efficient way to update LiveIntervals after
splitting an edge. I'll probably start by implementing the slow fallback and
test that it works before tackling the fast path for single-block ranges. The
existing code that updates LiveVariables is fairly slow as it is.

There isn't a command-line option for enabling this; instead, just edit
PHIElimination.cpp to require LiveIntervals.

llvm-svn: 174831

llvm-svn: 174830

make sense anymore.

llvm-svn: 174829

llvm-svn: 174828

llvm-svn: 174827

type char, which can't have TBAA tags.

llvm-svn: 174826

llvm-svn: 174825

llvm-svn: 174824

llvm-svn: 174823

Use this to add a space after "@[" and before "]" for now.

Later, I want to use this to format multi-line array literals nicer, too.

llvm-svn: 174822

the "nonatomic" attribute in property redeclaration
in class extension. Also, improved on diagnostics in
this area while at it. // rdar://13156292

llvm-svn: 174821

llvm-svn: 174817