nested values, so they can change and drop to null, which can
change the hash and cause havok.

It turns out that it isn't a good idea to value number stuff
with metadata operands anyway, so... don't.

llvm-svn: 122758

-fobjc-default-synthesize-properties flag.

llvm-svn: 122757

In the latest episode of "Deserializing bugs caused by accessors" the series reached a thrilling climax when
FunctionDecl::setPure crashed a poor user's code.

Remove the use of this accessor when deserializing, along with several other in the neighborhood. Fixes rdar://8759653.

llvm-svn: 122756

receives a PPCallback.

Patch by Richard Smith.

llvm-svn: 122755

Reapply 122341 to fix PR8199 now that clang changes are in.

llvm-svn: 122754

Support lit fixes for PR8199

Replace "clang++" with "clang\+\+" because we have to escape regexp
special characters now.  This is in preparation for changes to lit to
fix PR8199.  Tests will fail until the lit part gets committed.

llvm-svn: 122753

llvm-svn: 122752

template argument (described by an expression, of course). For
example:

  template<int...> struct int_tuple { };

  template<int ...Values>
  struct square {
    typedef int_tuple<(Values*Values)...> type;
  };

It also lays the foundation for pack expansions in an initializer-list.
  

llvm-svn: 122751

disabling rtti and exceptions where requested. Remove some unnecessary
code too.

llvm-svn: 122750

the benefit of project-based generators (VS, XCode, etc).

llvm-svn: 122749

llvm-svn: 122748

Patch by arrowdodger!

llvm-svn: 122747

InstructionSimplify on instructions that didn't change since the
last time round the loop.

llvm-svn: 122745

don't have access to (e.g., fprintf, which needs the library type
FILE), fail with a warning and forget about the builtin
entirely. Previously, we would actually provide an error, which breaks
autoconf's super-lame checks for fprintf, longjmp, etc. Fixes PR8316.

llvm-svn: 122744

llvm-svn: 122743

capacity on the Visited SmallPtrSet. On 403.gcc, this is about a 4.5% speedup of
CodeGenPrepare time (which itself is 10% of time spent in the backend).

This is progress towards PR8889.

llvm-svn: 122741

improvement in the generated code, and speeds up 'opt -std-compile-opts'
compile time on 176.gcc from 24.84s to 23.2s (about 7%).

This also resolves a specific code quality issue in rdar://7352081 which
was generating poor code for:

int t(int a, int b) {
  if (a & b & 1)
    return a & b;
  return 3;
}

llvm-svn: 122740

The rationale is that after analyzing a function in the SCC, we may want to
modify it in a way that requires us to update its uses (f.e. to replace the
call with a constant) or its users (f.e. to call it with fewer arguments).

llvm-svn: 122739

elimination as well.  This deletes 60 stores in 176.gcc
that largely come from bitfield code.

llvm-svn: 122736

a 28% speedup of MachineCSE time on 403.gcc.

llvm-svn: 122735

in their SCC as they already have with the direct callees.

llvm-svn: 122734

speeding earlycse up by 6%.

llvm-svn: 122733

store->load forwarding.  This allows EarlyCSE to zap 600 more
loads from 176.gcc.

llvm-svn: 122732

by their pointer instead of using MemoryValue to wrap it.

llvm-svn: 122731

llvm-svn: 122730

llvm-svn: 122729

update a callGraph when performing the common operation of splicing the body to
a new function and updating all callers (such as via RAUW).

No users yet, though this is intended for DeadArgumentElimination as part of
PR8887.

llvm-svn: 122728

On 176.gcc, this catches 13090 loads and calls, and increases the
number of simple instructions CSE'd from 29658 to 36208.

llvm-svn: 122727

llvm-svn: 122726

llvm-svn: 122725

llvm-svn: 122724

allocator.  This speeds up early cse by about 20%

llvm-svn: 122723

llvm-svn: 122722

llvm-svn: 122721

llvm-svn: 122720

of instcombine that is currently in the middle of the loop pass pipeline. This
commit only checks in the pass; it will hopefully be enabled by default later.

llvm-svn: 122719

llvm-svn: 122718

Teach it to CSE the rest of the non-side-effecting instructions.

llvm-svn: 122716

Add a testcase.

llvm-svn: 122715

so that Dominators.h is *just* domtree.  Also prune #includes a bit.

llvm-svn: 122714