on any current target and aren't optimized in DAGCombiner. Instead
of using intermediate nodes, expand the operations, choosing between
simple loads/stores, target-specific code, and library calls,
immediately.

Previously, the code to emit optimized code for these operations
was only used at initial SelectionDAG construction time; now it is
used at all times. This fixes some cases where rep;movs was being
used for small copies where simple loads/stores would be better.

This also cleans up code that checks for alignments less than 4;
let the targets make that decision instead of doing it in
target-independent code. This allows x86 to use rep;movs in
low-alignment cases.

Also, this fixes a bug that resulted in the use of rep;stos for
memsets of 0 with non-constant memory size when the alignment was
at least 4. It's better to use the library in this case, which
can be significantly faster when the size is large.

This also preserves more SourceValue information when memory
intrinsics are lowered into simple loads/stores.

llvm-svn: 49572

8-byte-aligned data.

llvm-svn: 49571

Moved IdDeclInfo class to anonymous namespace.
Replaced array with a std::vector.

llvm-svn: 49570

llvm-svn: 49569

llvm-svn: 49568

llvm-svn: 49567

llvm-svn: 49566

llvm-svn: 49565

Still need some boilerplate in BugReporter to report bugs at the end
of a function (not associated with a particular statement).

llvm-svn: 49564

change the state (and thus the GREndPathNodeBuilder automatically contructs a
node).

llvm-svn: 49563

evaluating transfer functions at the end-of-path.

llvm-svn: 49561

llvm-svn: 49558

llvm-svn: 49556

GRSimpleVals::EvalCal(), and don't change reference counts.

Remove "getDoNothingSummary()", as a NULL summary does the same thing.

Added temporary hack for the "Get" rule for objects that return a pointer type:
treat them as non-owned CF objects.

Added test case to detect the release of a non-owned object.

llvm-svn: 49555

llvm-svn: 49553

llvm-svn: 49552

llvm-svn: 49551

llvm-svn: 49550

llvm-svn: 49548

llvm-svn: 49547

llvm-svn: 49544

llvm-svn: 49543

Use of implicit_def is not part of live interval. Create empty intervals for the uses when the live interval is being spilled.

llvm-svn: 49542

llvm-svn: 49540

llvm-svn: 49539

llvm-svn: 49538

llvm-svn: 49535

llvm-svn: 49532

llvm-svn: 49530

cannot be build with GNAT GPL 2006, only with
GNAT GPL 2005.

llvm-svn: 49529

llvm-svn: 49524

llvm-svn: 49521

shadowing, instead of threading it through the AST.  This patch contributed
by Argiris Kirtzidis!

llvm-svn: 49520

file is specified, print a happy little error message.

llvm-svn: 49518

llvm-svn: 49517

of calls and less aggressive with non-readnone calls.

llvm-svn: 49516

llvm-svn: 49514

llvm-svn: 49513

llvm-svn: 49512

use-after-release errors.  Added test case.

llvm-svn: 49509