llvm-svn: 30881

llvm-svn: 30878

when the dag combiner simplifies an and mask, notice this and allow those bits
to be missing from the zap mask.

This compiles Alpha/zapnot4.ll into:

        sll $16,3,$0
        zapnot $0,3,$0
        ret $31,($26),1

instead of:

        ldah $0,1($31)
        lda $0,-8($0)
        sll $16,3,$1
        and $1,$0,$0
        ret $31,($26),1

It would be *really* nice to replace the hunk of code in the
AlphaISelDAGToDAG.cpp file that matches (and (srl (x, C), c2) into
(SRL (ZAPNOTi)) with a similar pattern, but I've spent enough time poking
at alpha.  Make andrew will do this.

llvm-svn: 30875

As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.

llvm-svn: 30873

llvm-svn: 30872

llvm-svn: 30867

llvm-svn: 30864

llvm-svn: 30862

llvm-svn: 30859

llvm-svn: 30858

llvm-svn: 30856

llvm-svn: 30854

See comment in CanBeFoldedBy() for detailed explanation.

llvm-svn: 30851

folding first.

llvm-svn: 30848

llvm-svn: 30847

llvm-svn: 30844

llvm-svn: 30835

llvm-svn: 30830

llvm-svn: 30829

llvm-svn: 30828

llvm-svn: 30827

llvm-svn: 30826

a framework for doing it right.  This fixes
CodeGen/X86/2006-10-07-ScalarSSEMiscompile.ll.

Once X86DAGToDAGISel::SelectScalarSSELoad is implemented right, this task
will be done.

llvm-svn: 30817

llvm-svn: 30815

llvm-svn: 30814

llvm-svn: 30813

llvm-svn: 30812

llvm-svn: 30811

Fix a bug where the asmstring for PSUBQrm was wrong.

llvm-svn: 30810

llvm-svn: 30809

llvm-svn: 30808

  PDI_binop_rm -> PDI_binop_rm_int
  PDI_binop_rmi -> PDI_binop_rmi_int

to make it clear that these are for use with intrinsics.

llvm-svn: 30807

llvm-svn: 30806

llvm-svn: 30805

This allows us to use the multiclass for other packs.

llvm-svn: 30804

llvm-svn: 30803

llvm-svn: 30802

llvm-svn: 30801

llvm-svn: 30800

llvm-svn: 30797