llvm-svn: 43439

Add a first attempt at dominator information for MBB's.  Use with caution: this has been tested to compile.  It has not yet been confirmed to generate correct analysis.

llvm-svn: 43438

eat the terminating ;.  Fix one place where it did, allowing this
to compile without error:

struct x {
 int a;
 union {
  int b;
  float c;
 };

 int d;
};

This reduces diagnostics on PR1750 from 33 to 27.

llvm-svn: 43437

one bogus error on PR1750.

llvm-svn: 43436

PR1750

llvm-svn: 43435

to parse stuff like:

asm volatile("1:  rex64/fxrstor (%[fx])\n\t"
       "2:\n"
       ".section .fixup,\"ax\"\n"
       "3:  movl $-1,%[err]\n"
       "    jmp  2b\n"
       ".previous\n"
       ".section __ex_table,\"a\"\n"
       "   .align 8\n"
       "   .quad  1b,3b\n"
       ".previous"
       : [err] "=r" (err)
       : [fx] "cdaSDb" (fx), "m" (*fx), "0" (0));

This reduces # diagnostics on PR1750 from 49 to 37.

llvm-svn: 43434

resolving a crash on a .i file in PR1750.  We now generate 49 errors on the
.i file in that bug.

llvm-svn: 43433

typeof(type) and typeof(expr) correctly.  Now provide a single point of
contact (Type::getDesugaredType) for doing the shallow stripping we need.

llvm-svn: 43432

now.  It conflicts with clang's -pedantic flag.

llvm-svn: 43431

b/h/w/k/q inline asm memory modifiers, which are just ignored.  This fixes
PR1748 and CodeGen/X86/2007-10-28-inlineasm-q-modifier.ll

llvm-svn: 43430

llvm-svn: 43429

llvm-svn: 43428

zero-length fields better.

llvm-svn: 43427

can have uses too.  Wouldn't it be nice if invoke didn't exist? :)

llvm-svn: 43426

pointers that were not backpatched (previously checked the wrong invariant).

llvm-svn: 43425

llvm-svn: 43424

llvm-svn: 43423

eager backpatching instead of waithing until all objects have been
deserialized.  This allows us to reduce the memory footprint needed
for backpatching.

llvm-svn: 43422

of offset and the alignment of ptr if these are both powers of
2.  While the ptr alignment is guaranteed to be a power of 2,
there is no reason to think that offset is.  For example, if
offset is 12 (the size of a long double on x86-32 linux) and
the alignment of ptr is 8, then the alignment of ptr+offset
will in general be 4, not 8.  Introduce a function MinAlign,
lifted from gcc, for computing the minimum guaranteed alignment.
I've tried to fix up everywhere under lib/CodeGen/SelectionDAG/.
I also changed some places that weren't wrong (because both values
were a power of 2), as a defensive change against people copying
and pasting the code.
Hopefully someone who cares about alignment will review the rest
of LLVM and fix up the remaining places.  Since I'm on x86 I'm
not very motivated to do this myself...

llvm-svn: 43421

llvm-svn: 43420

llvm-svn: 43419

llvm-svn: 43418

llvm-svn: 43417

llvm-svn: 43414

Fixed bug where default SerializeTrait<>::Materialize would not return the materialized object pointer.

llvm-svn: 43413

llvm-svn: 43412

llvm-svn: 43409

- ChangeCompareStride only reuse stride that is larger than current stride. It
  will let the general reuse mechanism to try to reuse a smaller stride.
- Watch out for multiplication overflow in ChangeCompareStride.
- Replace std::set with SmallPtrSet.

llvm-svn: 43408

llvm-svn: 43407

llvm-svn: 43406

llvm-svn: 43405

Start rewriting ObjC interfaces. As a start, we comment out all the methods. This involved refining how the parser/AST passes/manages SourceLocations for ObjcMethodDecl's. 

llvm-svn: 43404

decl without an @interface decl.

llvm-svn: 43403

llvm-svn: 43402

llvm-svn: 43401

place.

llvm-svn: 43400

  FE.
- Explicitly pass in the alignment of the load & store.
- XFAIL 2007-10-23-UnalignedMemcpy.ll because llc has a bug that crashes on
  unaligned pointers.

llvm-svn: 43398

llvm-svn: 43397

calling member functions of the target type to perform type-specific
serialization.
                         
Added version of ReadPtr that allows passing references to uintptr_t
(useful for smart pointers).

llvm-svn: 43396

Thanks to Steve N. to point out using of offsetof for this.

llvm-svn: 43391