for debugging and exception handling.

llvm-svn: 33550

llvm-svn: 33549

unconditional branch following it. Simply invert the condition and swap
destinations if the conditional branch can reach the destination of the
unconditional branch:
beq L1
b   L2
=>
bne L2
b   L1

llvm-svn: 33548

llvm-svn: 33543

llvm-svn: 33542

llvm-svn: 33537

is unnecessary when we are fixing up a conditional branch since we will be
adding a unconditional branch to the destination of the original branch.

llvm-svn: 33517

llvm-svn: 33515

llvm-svn: 33512

llvm-svn: 33510

llvm-svn: 33509

llvm-svn: 33502

llvm-svn: 33501

llvm-svn: 33497

llvm-svn: 33496

llvm-svn: 33484

llvm-svn: 33474

llvm-svn: 33472

  instructions into one (e.g. tLDRrr, tLDRri -> tLDR).
- Thumb ldrsb and ldrsh only have the [reg, reg] address format. If the
  address is not an add, materialize a 0 immediate into a register and use
  it as the offset field.

llvm-svn: 33470

llvm-svn: 33465

PEI is now responsible for adding MaxCallFrameSize to frame size and align the stack. Each target can further adjust the frame size if necessary.

llvm-svn: 33460

llvm-svn: 33455

requires 4-bytes alignment.

llvm-svn: 33448

llvm-svn: 33440

llvm-svn: 33433

llvm-svn: 33401

llvm-svn: 33390

llvm-svn: 33389

llvm-svn: 33368

llvm-svn: 33366

the .zerofill directive emission to not be darwin-specific.

llvm-svn: 33365

llvm-svn: 33364

llvm-svn: 33363

delimits the boundaries of jump tables.  This lets the linker's dead code
stripping optimization do a better job.

llvm-svn: 33362

llvm-svn: 33359

llvm-svn: 33353

llvm-svn: 33142

llvm-svn: 33141

llvm-svn: 32870

llvm-svn: 32823