power of two.  This emphatically includes the zeroeth power of two.

llvm-svn: 20429

llvm-svn: 20425

llvm-svn: 20424

double test(double l1_X) {
  return (-l1_X);
}

instead of like this:

double test(double l1_X) {
  return (-0x0p+0 - l1_X);
}

llvm-svn: 20423

llvm-svn: 20422

  ltmp_0_7 = malloc(((unsigned )(&(((signed char (*)[784])/*NULL*/0)[1u]))));

Instead, just emit the literal constant, like this:

  ltmp_0_7 = malloc(784u);

This works around a bug in ICC 8.1 compiling the CBE generated code.  :-(

llvm-svn: 20415

to a "sizeof" expression.

llvm-svn: 20414

llvm-svn: 20413

llvm-svn: 20412

llvm-svn: 20411

llvm-svn: 20410

llvm-svn: 20408

llvm-svn: 20407

Loop Strength Reduction.

llvm-svn: 20399

llvm-svn: 20397

explanation from IRC:

	|sabre|	I think it's an order of evaluation thing
	|sabre|	for me, the RHS of the assignment is evaluated first
	|sabre|	getTypeDescription checks to see if ConcreteTypeDescription[Ty] contains anything
	|sabre|	since it doesn't, it computes and returns the value
	|sabre|	this gets put into the map.
	|sabre|	For you, the LHS is evaluated first.
	|sabre|	Map[Ty] (aka ConcreteTypeDescriptions[Ty]) inserts an empty string into the map, returning a reference
	|sabre|	getTypeDesc then sees the empty string in the map
	|sabre|	and returns it
	|sabre|	bork :)

llvm-svn: 20394

llvm-svn: 20393

llvm-svn: 20386

llvm-svn: 20385

Patch idea contributed by Vladimir Merzliakov.

llvm-svn: 20384

  * Loop invariant code does not dominate the loop header, but rather
    the end of the loop preheader.

  * The base for a reduced GEP isn't a constant unless all of its
    operands (preceding the induction variable) are constant.

  * Allow induction variable elimination for the simple case after all.

Also made changes recommended by Chris for properly deleting
instructions.

llvm-svn: 20383

llvm-svn: 20382

llvm-svn: 20381

llvm-svn: 20380

llvm-svn: 20379

Justin Wick!

llvm-svn: 20378

llvm-svn: 20377

llvm-svn: 20376

llvm-svn: 20375

llvm-svn: 20374

llvm-svn: 20373

llvm-svn: 20372

llvm-svn: 20371

ensure that -L paths don't contain both bytecode and native libraries.
This patch contributed by Adam Treat.

llvm-svn: 20370

llvm-svn: 20369

llvm-svn: 20368

for reasons explained in the comments, I also deactivated this code as it needs
more thought.

llvm-svn: 20367

llvm-svn: 20360

llvm-svn: 20358

llvm-svn: 20357