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

llvm-svn: 22848

llvm-svn: 22847

llvm-svn: 22846

several of the PowerPC opcodes that come in both negated and non-negated
forms.

llvm-svn: 22845

is greater than the range of building selection dag node types, and
getTargetOpcode(), which returns the node opcode less the value of
isd::builtin_op_end, which specifies the end of the builtin types.

llvm-svn: 22844

on 177.mesa

llvm-svn: 22843

llvm-svn: 22842

Added some class dividers in SelectionDAG.cpp.

llvm-svn: 22841

llvm-svn: 22840

llvm-svn: 22839

llvm-svn: 22838

llvm-svn: 22837

incomplete, but it is a start.  It handles basic argument/retval stuff, immediates,
add and sub.

llvm-svn: 22836

llvm-svn: 22835

argument is not specified.

Implement ReplaceAllUsesWith.

llvm-svn: 22834

llvm-svn: 22833

Fix the setOperands methods I added to update use/def information correctly.

llvm-svn: 22832

llvm-svn: 22831

is to avoid the distraction of the union declarations.

llvm-svn: 22830

and some that were preexisting.  All alpha regtests pass now.

llvm-svn: 22829

llvm-svn: 22828

llvm-svn: 22827

Nate noticed in yacr2 (and I know occurs in other places as well).

This is still rough, as the critical edge blocks are not intelligently placed
but is added to get some idea to see if this improves performance.

llvm-svn: 22825