llvm-svn: 43405

  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: 43384

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: 43369

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

llvm-svn: 43367

llvm-svn: 43364

llvm-svn: 43359

llvm-svn: 43357

llvm-svn: 43356

llvm-svn: 43353

Use NVT rather than looking it up, since we have
it to hand.

llvm-svn: 43341

llvm-svn: 43340

llvm-svn: 43339

and the compaison is against a constant value, try eliminate the stride
by moving the compare instruction to another stride and change its
constant operand accordingly. e.g.

loop:
...
v1 = v1 + 3
v2 = v2 + 1
if (v2 < 10) goto loop
=>
loop:
...
v1 = v1 + 3
if (v1 < 30) goto loop

llvm-svn: 43336

llvm-svn: 43326

for backpatching.

Added Deserialize::ReadVal.

llvm-svn: 43319

llvm-svn: 43314

llvm-svn: 43309

Deserialize.h Serialization.h now includes trait speciailizations for
unsigned long, etc.

llvm-svn: 43307

llvm-svn: 43305

implementing cases related to PR1738.

llvm-svn: 43289

llvm-svn: 43271

memcpy library function instead.

llvm-svn: 43270

llvm-svn: 43267

llvm-svn: 43264

have their own custom memcpy lowering code. This code needs to be factored out
into a target-independent lowering method with hooks to the backend. In the
meantime, just call memcpy if we're trying to copy onto a stack.

llvm-svn: 43262

llvm-svn: 43261

llvm-svn: 43259

llvm-svn: 43256

llvm-svn: 43249

Temporary solution: added a different set of BCTRL_Macho / BCTRL_ELF with right callee-saved defs set for ppc64.

llvm-svn: 43248

llvm-svn: 43234