llvm-svn: 50476

llvm-svn: 50475

llvm-svn: 50474

llvm-svn: 50473

to instcombine.

llvm-svn: 50472

a fine job.

llvm-svn: 50470

llvm-svn: 50469

llvm-svn: 50468

llvm-svn: 50467

llvm-svn: 50466

llvm-svn: 50465

llvm-svn: 50464

llvm-svn: 50463

fixes are target-specific lowering of frame indices, fix constants generated
for the FSMBI instruction, and fixing SPUTargetLowering::computeMaskedBitsFor-
TargetNode().

llvm-svn: 50462

DAG.UpdateNodeOperands() is called before (not after) the call to
TLI.LowerOperation().

llvm-svn: 50461

llvm-svn: 50458

llvm-svn: 50454

llvm-svn: 50453

Patch by Emerson Murhpy-Hill.

llvm-svn: 50452

targets.

llvm-svn: 50451

This removes the failure in null-deref-ps.c (test suite).

llvm-svn: 50449

llvm-svn: 50448

Revert r50441.  The original code was correct.  Add some more comments so that I don't make the same mistake in the future.

llvm-svn: 50446

we were checking for it in the wrong order.  This caused a miscompilation because the
return slot optimization assumes that the call it is dealing with is NOT a memcpy.

llvm-svn: 50444

EvalStore/EvalLoad to handle all loads/stores from symbolic memory, allowing us
to do checks for null dereferences, etc., at any arbitrary load/store (these
were missed checks before). This also resulted in some major cleanups, some
conceptual, and others just in the structure of the code.

This temporarily introduces a regression in the test suite (null-deref-ps.c)
before I add a new LVal type for structure fields.

llvm-svn: 50443

llvm-svn: 50442

of this was suggested by Chris.

llvm-svn: 50441

llvm-svn: 50437

llvm-svn: 50436

llvm-svn: 50433

This fixes the second half of PR2262

llvm-svn: 50430

llvm-svn: 50429

llvm-svn: 50428

llvm-svn: 50426

This removes the existing bottleneck related to the removal of elements from 
the middle of the queue.

Also fixes a subtle bug in ScheduleDAGRRList::CapturePred:
It was updating the state of the SUnit before removing it. As a result, the
comparison operators were working incorrectly and this SUnit could not be removed 
from the queue properly.

Reviewed by Evan and Dan. Approved by Dan.

llvm-svn: 50412

generalizes the previous code to handle the case when the string is not
an immediate to the strlen call (for example, crazy stuff like 
strlen(c ? "foo" : "bart"+1) -> 3).  This implements 
gcc.c-torture/execute/builtins/strlen-2.c.  I will generalize other
cases in simplifylibcalls to use the same routine later.

llvm-svn: 50408

llvm-svn: 50406

stack anymore.

llvm-svn: 50397

llvm-svn: 50396

llvm-svn: 50395