llvm-svn: 23663

C-X's

llvm-svn: 23662

llvm-svn: 23661

llvm-svn: 23660

implements CodeGen/PowerPC/div-2.ll

llvm-svn: 23659

llvm-svn: 23658

llvm-svn: 23657

llvm-svn: 23656

this out to me

llvm-svn: 23655

classes on PPC.  We were emitting fmr instructions to do fp extensions, which
weren't getting coallesced.  This fixes Regression/CodeGen/PowerPC/fpcopy.ll

llvm-svn: 23654

llvm-svn: 23653

llvm-svn: 23652

llvm-svn: 23651

llvm-svn: 23650

llvm-svn: 23649

llvm-svn: 23648

helps but not enough.

Start pulling cases out of PPC32DAGToDAGISel::Select.  With GCC 4, this function
required 8512 bytes of stack space for each invocation (GCC 3 required less
than 700 bytes).  Pulling this first function out gets us down to 8224.  More
to come :(

llvm-svn: 23647

llvm-svn: 23646

previous copy elisions and we discover we need to reload a register, make
sure to use the regclass of the original register for the reload, not the
class of the current register.  This avoid using 16-bit loads to reload 32-bit
values.

llvm-svn: 23645

llvm-svn: 23644

llvm-svn: 23643

llvm-svn: 23642

llvm-svn: 23641

llvm-svn: 23640

llvm-svn: 23639

  store r12 -> [ss#2]
  R3 = load [ss#1]
  use R3
  R3 = load [ss#2]
  R4 = load [ss#1]

and turn it into this code:

  store R12 -> [ss#2]
  R3 = load [ss#1]
  use R3
  R3 = R12
  R4 = R3    <- oops!

The problem was that promoting R3 = load[ss#2] to a copy missed the fact that
the instruction invalidated R3 at that point.

llvm-svn: 23638

llvm-svn: 23637

with the dag combiner.  This speeds up espresso by 8%, reaching performance
parity with the dag-combiner-disabled llc.

llvm-svn: 23636

llvm-svn: 23635

dead node elim and dag combiner passes where the root is potentially updated.
This fixes a fixme in the dag combiner.

llvm-svn: 23634

llvm-svn: 23633

that testcase still does not pass with the dag combiner.  This is because
not all forms of br* are folded yet.

Also, when we combine a node into another one, delete the node immediately
instead of waiting for the node to potentially come up in the future.

llvm-svn: 23632

the second phase of dag combining

llvm-svn: 23631

llvm-svn: 23630

llvm-svn: 23629

When moving constant entries in 'Map' if the entry is the representative
constant for the abstractypemap, make sure to update it as well.  This
fixes the bcreader failures from last night on several C++ apps.

llvm-svn: 23628

of the python test from 1:00 to 54s.

llvm-svn: 23627

true dynamically.  Finally, pass the Use* that replaceAllUsesWith has into
the method for future use.

llvm-svn: 23626

take the bool.  The bool is always true dynamically.

llvm-svn: 23625

creating the keys and doing comparisons to index into 'Map' takes a lot
of time.  For these large constants, keep an inverse map so that 'remove'
and move operations are much faster.

This speeds up a release build of the bc reader on Eric's nasty python
bytecode file from 1:39 to 1:00s.

llvm-svn: 23624