llvm-svn: 22891

Give a whole bunch of other stuff variable operands, particularly FP.  The
FP stackifier is playing fast and loose with operands here, so we have to
mark them all as variable.  This will have to be fixed before we can dag->dag
the X86 backend.  The solution is for the pre-stackifier and post-stackifier
instructions to all be disjoint.

llvm-svn: 22890

llvm-svn: 22889

llvm-svn: 22888

only take one operand.  The other comes implicitly in through CL.

llvm-svn: 22887

passed.

llvm-svn: 22886

or not it's variable.

llvm-svn: 22885

llvm-svn: 22884

the operand lists of a few other nodes.

llvm-svn: 22883

llvm-svn: 22882

llvm-svn: 22881

llvm-svn: 22880

LLVM is able to merge identical static const globals, GCC isn't, and this caused
some bloat in the generated data.  This has a marginal effect on PPC, shrinking
the implicit sets from 10->4, but shrinks X86 from 179 to 23, a much bigger
reduction.

This should speed up the register allocator as well by reducing the dcache
footprint for this static data.

llvm-svn: 22879

llvm-svn: 22878

llvm-svn: 22877

codegen:

_empty:
.LBB_empty_0:   ;
        blr

but can't do anything more (yet). :)

llvm-svn: 22876

llvm-svn: 22875

llvm-svn: 22874

.td file.

llvm-svn: 22873

2. Get an exact count of 'li ' instructions.

llvm-svn: 22872

llvm-svn: 22871

llvm-svn: 22870

llvm-svn: 22869

llvm-svn: 22868

llvm-svn: 22867

llvm-svn: 22866

as the argument to LIS rather than the result of HA16(constant).

The DAG->DAG ISel was already doing the right thing.

llvm-svn: 22865

Now for int foo() { return -1; } we generate:
_foo:
        li r3, -1
        blr

instead of
_foo:
        lis r2, -1
        ori r3, r2, 65535
        blr

llvm-svn: 22864

llvm-svn: 22863

to make the code follow people's expectations better.

llvm-svn: 22861

llvm-svn: 22858

llvm-svn: 22857

rlwinm.

llvm-svn: 22856

llvm-svn: 22855

llvm-svn: 22854

llvm-svn: 22853

zextload + sign_extend_inreg rather than a sextload.

llvm-svn: 22852

llvm-svn: 22851

llvm-svn: 22850

llvm-svn: 22849