llvm-svn: 31364

Two-address instructions no longer have to be A := A op C. Now any pair of dest / src operands can be tied together.

llvm-svn: 31363

llvm-svn: 31362

llvm-svn: 31360

llvm-svn: 31359

This fixes http://llvm.org/bugs/show_bug.cgi?id=979

llvm-svn: 31358

llvm-svn: 31356

having SCZeroExtendExpr be equivalent to SCTruncate

llvm-svn: 31355

it inserts an uncond branch where it is less likely to cause a problem.  This
fixes some perf issues on ppc.

llvm-svn: 31354

llvm-svn: 31352

llvm-svn: 31349

llvm-svn: 31348

llvm-svn: 31347

llvm-svn: 31346

result.  This can significantly shrink code and exposes identities more
aggressively.

llvm-svn: 31344

llvm-svn: 31343

llvm-svn: 31342

This triggers thousands of times on multisource.

llvm-svn: 31341

llvm-svn: 31340

llvm-svn: 31339

would fail. E.g. udiv sint X, Y  or sdiv uint X, Y would fail to find a
type match in the switch statement and fail the operation.

llvm-svn: 31338

tail is not an entire block for either of them, pick one, split it, then
merge the common part.

llvm-svn: 31336

llvm-svn: 31335

llvm-svn: 31332

llvm-svn: 31331

_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        blt cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr

instead of:

_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bge cr0, LBB1_1 ;bb72.exitStub
LBB1_4: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bnu cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr

llvm-svn: 31330

llvm-svn: 31328

llvm-svn: 31327

-static mode.  This implements PR882.

llvm-svn: 31326

llvm-svn: 31325

llvm-svn: 31323

llvm-svn: 31322

llvm-svn: 31320

llvm-svn: 31319

llvm-svn: 31318

Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll

llvm-svn: 31317

llvm-svn: 31315

llvm-svn: 31313

llvm-svn: 31312

2. Added partial debug support for mingw\cygwin targets (the same as
   Linux\ELF). Please note, that currently mingw\cygwin uses 'stabs' format
   for storing debug info by default, thus many (runtime) libraries has
   this information included. These formats shouldn't be mixed in one binary
   ('stabs' & 'DWARF'), otherwise binutils tools will be confused.

llvm-svn: 31311