confusion with external linkage types.

llvm-svn: 33663

llvm-svn: 33658

llvm-svn: 33657

llvm-svn: 33656

sp, imm instructions implicitly multiply the offset by 4.

llvm-svn: 33653

llvm-svn: 33652

instructions that use these address modes to instructions that use
t_addrmode_sp.

llvm-svn: 33651

  spilled (if it is not already).
- If LR is spilled, use BL to implement far jumps. LR is not used as a GPR
  in thumb mode so it can be clobbered if it is properly spilled / restored
  in prologue / epilogue.
- If LR is force spilled but no far jump has been emitted, try undo'ing the
  spill by:
  push lr -> delete
  pop pc -> bx lr

llvm-svn: 33650

llvm-svn: 33649

llvm-svn: 33644

llvm-svn: 33639

address nodes.

llvm-svn: 33636

regs.

llvm-svn: 33635

llvm-svn: 33634

llvm-svn: 33633

llvm-svn: 33632

for "inreg" calls

llvm-svn: 33631

llvm-svn: 33630

llvm-svn: 33628

llvm-svn: 33622

llvm-svn: 33619

What compiler are people using that accepts this code?

llvm-svn: 33603

1. New parameter attribute called 'inreg'. It has meaning "place this
parameter in registers, if possible". This is some generalization of
gcc's regparm(n) attribute. It's currently used only in X86-32 backend.
2. Completely rewritten CC handling/lowering code inside X86 backend.
Merged stdcall + c CCs and fastcall + fast CC.
3. Dropped CSRET CC. We cannot add struct return variant for each
target-specific CC (e.g. stdcall + csretcc and so on).
4. Instead of CSRET CC introduced 'sret' parameter attribute. Setting in
on first attribute has meaning 'This is hidden pointer to structure
return. Handle it gently'.
5. Fixed small bug in llvm-extract + add new feature to
FunctionExtraction pass, which relinks all internal-linkaged callees
from deleted function to external linkage. This will allow further
linking everything together.

NOTEs: 1. Documentation will be updated soon.
       2. llvm-upgrade should be improved to translate csret => sret.
          Before this, there will be some unexpected test fails.
llvm-svn: 33597

llvm-svn: 33585

llvm-svn: 33574

llvm-svn: 33571

llvm-svn: 33569

llvm-svn: 33568

llvm-svn: 33562

Now we can compile llvm-gcc on arm-linux-gnueabi!

llvm-svn: 33558

llvm-svn: 33556

scattered relocations.

llvm-svn: 33555

llvm-svn: 33551

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

The Module::setEndianness and Module::setPointerSize methods have been
removed. Instead you can get/set the DataLayout. Adjust thise accordingly.

llvm-svn: 33530