llvm-svn: 50164

llvm-svn: 50160

empty ScheduleDAG.

llvm-svn: 50054

This fixes the testsuite failure on ppcf128-4.ll.

llvm-svn: 49994

llvm-svn: 49977

LegalizeTypes.  Correct the load logic so
that it actually works, and also teach it
to handle floating point extending loads.

llvm-svn: 49923

llvm-svn: 49916

rather than having it suck them out of a node.  Add
a bunch of new libcalls, and remove dead softfloat
code (dead, because FloatToInt is used not Expand
in this case).  Note that indexed stores probably
aren't handled properly, likewise for loads.

llvm-svn: 49915

llvm-svn: 49913

llvm-svn: 49911

may fix a build error on Visual Studio.

llvm-svn: 49876

Be more careful with insert_subreg and extract_subreg where either source or destination operand has already been coalesced with another register that's defined by a insert_subreg or extract_subreg.

llvm-svn: 49843

llvm-svn: 49841

llvm-svn: 49839

llvm-svn: 49832

Correlate stubs with functions in JIT: when emitting a stub, the JIT tells the memory manager which function
the stub will resolve.

llvm-svn: 49814

llvm-svn: 49810

Infrastructure for getting the machine code size of a function and an instruction. X86, PowerPC and ARM are implemented

llvm-svn: 49809

llvm-svn: 49807

llvm-svn: 49800

Rename SDOperandImpl back to SDOperand.
Introduce the SDUse class that represents a use of the SDNode referred by
an SDOperand. Now it is more similar to Use/Value classes.

Patch is approved by Dan Gohman.

llvm-svn: 49795

Rewrite LiveVariable liveness computation. The new implementation is much simplified. It eliminated the nasty recursive routines and removed the partial def / use bookkeeping. There is also potential for performance improvement by replacing the conservative handling of partial physical register definitions. The code is currently disabled until live interval analysis is taught of the name scheme.

This patch also fixed a couple of nasty corner cases.

llvm-svn: 49784

llvm-svn: 49783

llvm-svn: 49760

the scheduler has inserted no-ops. This fixes
the 2006-07-03-schedulers.ll regression on ppc32.

llvm-svn: 49747

llvm-svn: 49715

ScheduleDAG; they don't correspond to any actual instructions so they
don't need to be scheduled.

This fixes a bug where the EntryToken was being scheduled multiple
times in some cases, though it ended up not causing any trouble because 
EntryToken doesn't expand into anything. With this fixed the schedulers
reliably schedule the expected number of units, so we can check this
with an assertion.

This requires a tweak to test/CodeGen/X86/loop-hoist.ll because it
ends up getting scheduled differently in a trivial way, though it was
enough to fool the prcontext+grep that the test does.

llvm-svn: 49701

instead of blue to distinguish them from regular dependencies.

llvm-svn: 49696

llvm-svn: 49676

memory intrinsic expansion code.

llvm-svn: 49666

stack tracebacks on Darwin x86-64 won't work by default;
nevertheless, everybody but me thinks this is a good idea.

llvm-svn: 49663

llvm-svn: 49652

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

llvm-svn: 49634

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

the result IRBuilder.  Patch by Dominic Hamon.

llvm-svn: 49604

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

llvm-svn: 49544

llvm-svn: 49543