Found by code inspection; I haven't seen this in real-world code.

llvm-svn: 72408

llvm-svn: 72407

llvm-svn: 72406

llvm-svn: 72405

printf operands to long to suppress warnings.

llvm-svn: 72404

low-level alias() method, allowing it to reason more aggressively
about pointers into constant memory.  PR4189

llvm-svn: 72403

or use labels as members of structures for example. Also included a couple of
whitespace fixes.

llvm-svn: 72402

correctly.

llvm-svn: 72401

even on Core2, not just AMD processors which was a surprise to me.

llvm-svn: 72396

llvm-svn: 72395

left out handling for stuff like (S())++ for the moment.

llvm-svn: 72394

argument.  This avoids the argument from being silenced when the argument is
the NULL macro, which is defined in a system header.  This also makes the output
a bit nicer, e.g.:

t.c:8:3: warning: null passed to a callee which requires a non-null argument
  func1(NULL, cp2, i1);
  ^     ~~~~

vs something like:

t.c:8:10: warning: argument is null where non-null is required
  func1(NULL, cp2, i1);
        ^

llvm-svn: 72393

llvm-svn: 72392

llvm-svn: 72391

llvm-svn: 72390

DiagnosticGroups.td, and add it as part of -Wformat (which gets it into -Wall).

llvm-svn: 72389

1. When we accept "#garbage" in asm-with-cpp mode, change the token kind
   of the # to unknown so that the preprocessor won't try to process it as
   a real #.  This fixes a crash on the attached example
2. Fix macro definition extents processing to handle #foo at the end of a
   macro to say the definition ends with the foo, not the #.

This is a follow-on fix to r72283, and rdar://6916026

llvm-svn: 72388

llvm-svn: 72387

llvm-svn: 72386

llvm-svn: 72385

can't just eliminate all global initializers.

llvm-svn: 72378

simplification. It's not clear to me whether this can replace the first of the
linear instruction simplification stages or not, so I left it in.

llvm-svn: 72377

llvm-svn: 72376

in the case where a loop exit value cannot be computed, instead of only in
some cases while using SCEVCouldNotCompute in others. This simplifies
getSCEVAtScope's callers.

llvm-svn: 72375

bit clearer.

llvm-svn: 72374

corresponding integer type is legal.

llvm-svn: 72373

one of the RecursivelyDeleteTriviallyDeadInstructions.
Add a comment explaining why the cache needs to be cleared.

llvm-svn: 72372

Also fix 80 column violation.

llvm-svn: 72371

the RHS.  Fixes assembler-with-cpp issue reported on cfe-dev.

llvm-svn: 72370

leave the original comparison in place if it has other uses, since the
other uses won't be dominated by the new comparison instruction.

llvm-svn: 72369

Use &Ops[0] instead, which is safe since Ops will never be empty here.

llvm-svn: 72368

comparison, use takeName to give the integer comparison a name.

llvm-svn: 72367

sending SCEVUnknowns to expandAddToGEP. This avoids the need for
expandAddToGEP to bend the rules and peek into SCEVUnknown
expressions.

Factor out the code for testing whether a SCEV can be factored by
a constant for use in a GEP index. This allows it to handle
SCEVAddRecExprs, by recursing.

As a result, SCEVExpander can now put more things in GEP indices,
so it emits fewer explicit mul instructions.

llvm-svn: 72366

of low bits of the other operand are preserved in the output.

llvm-svn: 72365

Fix by clearing the rewriter cache before deleting the trivially dead
instructions.
Also make InsertedExpressions use an AssertingVH to catch these
bugs easier.

llvm-svn: 72364

it's late, and I don't have any better ideas at the moment.  Fixes PR4257.

llvm-svn: 72363

can crash during instruction simplification (for example if it creates a
broken module).

llvm-svn: 72362

Sometimes when bugpointing a crash the bugpoint-reduced-simplified.bc reproduces
a totally different bug than the original one ("GV doesn't have initializer").
Although its useful to report that bug too, I need a way to reduce the original
bug, hence I introduced -disable-global-remove.

llvm-svn: 72361

llvm-svn: 72360

all results and all operands are legal, so this change shouldn't affect 
behavior at all.

llvm-svn: 72359