The later fails if the token is not an identifier.
 - Replace tabs with spaces.
 - Various other cleanups.

Patch by Nico Weber!

llvm-svn: 45368

llvm-svn: 45367

llvm-svn: 45362

llvm-svn: 45361

llvm-svn: 45360

llvm-svn: 45358

collector algorithms.

llvm-svn: 45357

when copying functions.

llvm-svn: 45356

llvm-svn: 45355

it is only a partial fix.  This change is noise for most programs, but
speeds up Shootout-C++/matrix by 20%, Ptrdist/ks by 24%, smg2000 by 8%,
hexxagon by 9%, bzip2 by 9% (not sure I trust this), ackerman by 13%, etc.

OTOH, it slows down Shootout/fib2 by 40% (I'll update PR1877 with this info).

llvm-svn: 45354

llvm-svn: 45353

llvm-svn: 45352

    define void @f() {
            ...
            call i32 @g()
            ...
    }

    define void @g() {
            ...
    }

The hazards are:

  - @f and @g have GC, but they differ GC. Inlining is invalid. This
    may never occur.
  - @f has no GC, but @g does. g's GC must be propagated to @f.

The other scenarios are safe:

  - @f and @g have the same GC.
  - @f and @g have no GC.
  - @g has no GC.

This patch adds inliner checks for the former two scenarios.

llvm-svn: 45351

function with GC.

This will catch the error when the inliner inlines a function with
GC into a caller with no GC.

llvm-svn: 45350

LangRef.

llvm-svn: 45349

llvm-svn: 45348

llvm-svn: 45347

llvm-svn: 45346

llvm-svn: 45345

When specified, don't split backedges of single-bb loops.
This helps address PR1877

llvm-svn: 45344

llvm-svn: 45343

llvm-svn: 45342

output of nm.

llvm-svn: 45341

llvm-svn: 45340

llvm-svn: 45339

providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45338

llvm-svn: 45337

llvm-svn: 45336

llvm-svn: 45335

llvm-svn: 45334

llvm-svn: 45333

llvm-svn: 45330

llvm-svn: 45329

llvm-svn: 45328

llvm-svn: 45327

llvm-svn: 45326

llvm-svn: 45325

llvm-svn: 45324

legalizer support goes in.

llvm-svn: 45323

llvm-svn: 45322