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: 31361

llvm-svn: 31360

llvm-svn: 31359

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

llvm-svn: 31358

llvm-svn: 31357

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: 31353

llvm-svn: 31352

llvm-svn: 31351

llvm-svn: 31350

llvm-svn: 31349

llvm-svn: 31348

llvm-svn: 31347

llvm-svn: 31346

llvm-svn: 31345

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: 31334

llvm-svn: 31333

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: 31329

llvm-svn: 31328

llvm-svn: 31327

-static mode.  This implements PR882.

llvm-svn: 31326

llvm-svn: 31325

llvm-svn: 31324