if (x) {
    code
    ...
  } else {
    code
    ...
  }

Turn it into:

  code
  if (x) {
    ...
  } else {
    ...
  }

This reduces code size and in some common cases allows us to completely
eliminate the conditional.  This turns several if/then/else blocks in loops
into straightline code in 179.art, turning the loops into single basic blocks
(good for modsched even!).

Maybe now brg will leave me alone ;-)

llvm-svn: 18366

Remove extraneous namespacification.  In particular, don't define llvm::llvm::createInternalGlobalMapperPass

llvm-svn: 18365

Corrected a potential grammary issue.

llvm-svn: 18364

llvm-svn: 18363

should fix the stale runtime libraries problem.

llvm-svn: 18361

1. Nothing should happen on "make all". Doc generation is quick, but we
   don't want to do it unless we're installing.
2. Correct a dependency for the *.ps files .. didn't notice this before
   because of cruft in my directory. It failed on a clean build.

llvm-svn: 18359

implementation

llvm-svn: 18358

llvm-svn: 18357

llvm-svn: 18356

SearchForAddressOfSymbol.

llvm-svn: 18355

library into the address space permanently. SearchForAddressOfSymbol looks
in all previously permanently loaded libraries and any currently open
libraries for a symbol, instead of just one library like GetAddressOfSymbol

llvm-svn: 18354

llvm-svn: 18353

more platforms than LLVM supports.

llvm-svn: 18352

changing directory first. Also make sure that we don't attempt to run
config.status if the recheck didn't work.

llvm-svn: 18351

llvm-svn: 18350

llvm-svn: 18349

* Add instructions about upgrading autoconf

llvm-svn: 18348

llvm-svn: 18347

llvm-svn: 18346

llvm-svn: 18345

llvm-svn: 18344

llvm-svn: 18343

our own library so that it is magically hidden and we don't have to depend
on linking with -lltdl option.

llvm-svn: 18342

opened as if it was a dynamic library so its symbols can be searched too.

llvm-svn: 18341

if it was a dynamic library.

llvm-svn: 18340

llvm-svn: 18339

* Document the new "LLVMLIBS=JIT" feature to make building JIT programs
  super easy.

llvm-svn: 18338

llvm-svn: 18337

llvm-svn: 18333

llvm-svn: 18332

llvm-svn: 18331

to Brian and the Sun compiler for pointing out that the obvious works :)

This also enables folding all long comparisons into setcc and branch
instructions: before we could only do == and !=

For example, for:
void test(unsigned long long A, unsigned long long B) {
   if (A < B) foo();
 }

We now generate:

test:
        subl $4, %esp
        movl %esi, (%esp)
        movl 8(%esp), %eax
        movl 12(%esp), %ecx
        movl 16(%esp), %edx
        movl 20(%esp), %esi
        subl %edx, %eax
        sbbl %esi, %ecx
        jae .LBBtest_2  # UnifiedReturnBlock
.LBBtest_1:     # then
        call foo
        movl (%esp), %esi
        addl $4, %esp
        ret
.LBBtest_2:     # UnifiedReturnBlock
        movl (%esp), %esi
        addl $4, %esp
        ret

Instead of:

test:
        subl $12, %esp
        movl %esi, 8(%esp)
        movl %ebx, 4(%esp)
        movl 16(%esp), %eax
        movl 20(%esp), %ecx
        movl 24(%esp), %edx
        movl 28(%esp), %esi
        cmpl %edx, %eax
        setb %al
        cmpl %esi, %ecx
        setb %bl
        cmove %ax, %bx
        testb %bl, %bl
        je .LBBtest_2   # UnifiedReturnBlock
.LBBtest_1:     # then
        call foo
        movl 4(%esp), %ebx
        movl 8(%esp), %esi
        addl $12, %esp
        ret
.LBBtest_2:     # UnifiedReturnBlock
        movl 4(%esp), %ebx
        movl 8(%esp), %esi
        addl $12, %esp
        ret

llvm-svn: 18330

* Get rid of appending -lbz2 and -lz to ExtraLibs now that we don't need
  them any more.
* Fix the dist-check target so that EXTRA_DIST can be defined AFTER the
  include of Makefile.common. This is needed because Makefile.common
  provides variable definitions that may need to be used in computing the
  value of EXTRA_DIST.
* Clean up some "distdir" target output.

llvm-svn: 18329

llvm-svn: 18328

* organize programs we test for properly
* add new programs needed for documentation generation
* Adjust install paths so llvm stuff doesn't muck up /usr/local or /usr if
  $prefix is set to those.

llvm-svn: 18327

* Provide support for ENABLE_DOXYGEN
* New tools that documentation generation requires

llvm-svn: 18326

llvm-svn: 18325

* Implement optional doxygen doc generation
* Implement HTML and doxygen installation

llvm-svn: 18324

llvm-svn: 18323

Reworked branching so we don't handle BAs specially. It just updates the branchTO regardless of what type of branch it is.

llvm-svn: 18322