- 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

llvm-svn: 43390

llvm-svn: 43387

Code gen static initializer.

llvm-svn: 43386

llvm-svn: 43385

llvm-svn: 43384

llvm-svn: 43383

llvm-svn: 43382

registers in case, when FP pointer was eliminated. This should fixes misc. random
EH-related crahses, when stuff is compiled with -fomit-frame-pointer.
Thanks Duncan for nailing this bug!

llvm-svn: 43381

want them later (mips32/64).

llvm-svn: 43380

llvm-svn: 43379

improved wording in source files.

llvm-svn: 43377

Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free.
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb

llvm-svn: 43375

llvm-svn: 43374

pointers that employ unused bits in a pointer to store extra data.

llvm-svn: 43373

Silenced VC++ warning.

llvm-svn: 43372

llvm-svn: 43371

llvm-svn: 43370

llvm-svn: 43369

llvm-svn: 43368

stride may be rewritten using the stride of the compare instruction.

llvm-svn: 43367

llvm-svn: 43366

llvm-svn: 43365

llvm-svn: 43364

llvm-svn: 43363

llvm-svn: 43362

llvm-svn: 43361

Changed the entire rewrite of metadata to write to std::string
object instead of stdout.

llvm-svn: 43360