llvm-svn: 45415

comparisons with a constant.  This allows us to compile isnan to:

_foo:
	fcmpu cr7, f1, f1
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

instead of:

LCPI1_0:					;  float
	.space	4
_foo:
	lis r2, ha16(LCPI1_0)
	lfs f0, lo16(LCPI1_0)(r2)
	fcmpu cr7, f1, f0
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

llvm-svn: 45405

llvm-svn: 45402

llvm-svn: 45400

  x = load p
  store x -> p

llvm-svn: 45398

llvm-svn: 45347

llvm-svn: 45334

legalizer support goes in.

llvm-svn: 45323

llvm-svn: 45322

or after legalize.

llvm-svn: 45321

targets.

llvm-svn: 45320

fixes a bug with indirect calls. (Test case will be included with
ocaml collector patch.)

llvm-svn: 45316

llvm-svn: 45310

Remove critical edge breaking.  It won't be necessary as long as we are very careful when inserting copies.

llvm-svn: 45309

llvm-svn: 45259

llvm-svn: 45253

llvm-svn: 45252

llvm-svn: 45245

llvm-svn: 45198

to know about calls that cannot throw ('nounwind'):
if such a call does throw for some reason then the
personality will terminate the program.  The distinction
between an ordinary call and a nounwind call is that
an ordinary call gets an entry in the exception table
but a nounwind call does not.  This patch sets up the
exception table appropriately.  One oddity is that
I've chosen to bracket nounwind calls with labels (like
invokes) - the other choice would have been to bracket
ordinary calls with labels.  While bracketing
ordinary calls is more natural (because bracketing
by labels would then correspond exactly to getting an
entry in the exception table), I didn't do it because
introducing labels impedes some optimizations and I'm
guessing that ordinary calls occur more often than
nounwind calls.  This fixes the gcc filter2 eh test,
at least at -O0 (the inliner needs some tweaking at
higher optimization levels).

llvm-svn: 45197

llvm-svn: 45186

llvm-svn: 45178

llvm-svn: 45172

llvm-svn: 45167

llvm-svn: 45164

FIX for PR1799: When a load is unfolded from an instruction, check if it is a new node. If not, do not create a new SUnit.

llvm-svn: 45157

llvm-svn: 45151

how to lower them (with no attempt made to be
efficient, since they should only occur for
unoptimized code).

llvm-svn: 45108

Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space.

llvm-svn: 45082

llvm-svn: 45070

llvm-svn: 45069

llvm-svn: 45034

llvm-svn: 45028

llvm-svn: 44987

Remove ugly and horrible code.  It's not necessary for correctness, and can be added back later if it causes code quality issues.

llvm-svn: 44986

Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.

llvm-svn: 44960

SelectionDAG::getConstant, in the same way as vector floating-point
constants. This allows the legalize expansion code for @llvm.ctpop and
friends to be usable with vector types.

llvm-svn: 44954

interfered with other registers.  Seems like that might be a good thing to do. :-)

llvm-svn: 44902

If deleting a reload instruction due to reuse (value is available in register R and reload is targeting R), make sure to invalidate the kill information of the last kill.

llvm-svn: 44894

llvm-svn: 44892