llvm-svn: 49661

llvm-svn: 49657

llvm-svn: 49652

Matthijs Kooijman

llvm-svn: 49648

llvm-svn: 49646

much simpler than in LegalizeDAG because calls are
not yet expanded into call sequences: that happens
after type legalization has finished.

llvm-svn: 49634

llvm-svn: 49617

llvm-svn: 49616

which is significantly more efficient.

llvm-svn: 49614

in its maps.  Add some sanity checks that catch
this kind of thing.  Hopefully these can be
removed one day (once all problems are fixed!)
but for the moment it seems wise to have them in.

llvm-svn: 49612

llvm-svn: 49611

llvm-svn: 49610

llvm-svn: 49606

the result IRBuilder.  Patch by Dominic Hamon.

llvm-svn: 49604

not # of operands as an input.

llvm-svn: 49599

llvm-svn: 49593

optimized x86-64 (and x86) calls so that they work (... at least for
my test cases).

Should fix the following problems:

Problem 1: When i introduced the optimized handling of arguments for
tail called functions (using a sequence of copyto/copyfrom virtual
registers instead of always lowering to top of the stack) i did not
handle byval arguments correctly e.g they did not work at all :).

Problem 2: On x86-64 after the arguments of the tail called function
are moved to their registers (which include ESI/RSI etc), tail call
optimization performs byval lowering which causes xSI,xDI, xCX
registers to be overwritten. This is handled in this patch by moving
the arguments to virtual registers first and after the byval lowering
the arguments are moved from those virtual registers back to
RSI/RDI/RCX.

llvm-svn: 49584

llvm-svn: 49583

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

llvm-svn: 49569

llvm-svn: 49568

llvm-svn: 49566

llvm-svn: 49548

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: 49538

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

llvm-svn: 49529

llvm-svn: 49524

llvm-svn: 49517

of calls and less aggressive with non-readnone calls.

llvm-svn: 49516

llvm-svn: 49514

llvm-svn: 49513

llvm-svn: 49512

llvm-svn: 49504

llvm-svn: 49502

wrong order.

llvm-svn: 49499

llvm-svn: 49496