llvm-svn: 34596

llvm-svn: 34595

llvm-svn: 34594

llvm-svn: 34593

This implements CodeGen/X86/fp-stack-ret.ll:test[23]

llvm-svn: 34592

llvm-svn: 34590

section of the file.

llvm-svn: 34589

result value stuff.  This eliminates a bunch of duplicated code and now
GetRetValueLocs is the sole place that decides where a value is returned.

llvm-svn: 34588

llvm-svn: 34587

function.  This function now uses GetRetValueLocs to determine *where*
the result values are located and concerns itself with *how* to pull the
values out.

llvm-svn: 34586

llvm-svn: 34585

test/CodeGen/X86/fp-stack-ret.ll into:

        movl 4(%esp), %eax
        fldl (%eax)
        ret

instead of:

        subl $12, %esp
        movl 16(%esp), %eax
        movsd (%eax), %xmm0
        movsd %xmm0, (%esp)
        fldl (%esp)
        addl $12, %esp
        ret

by eliminating a token factor that blocked a check.

llvm-svn: 34584

registers out from the logic of *how* to return them.

This changes X86-64 to mark EAX live out when returning a 32-bit value,
where before it marked RAX liveout.

llvm-svn: 34582

llvm-svn: 34581

llvm-svn: 34579

llvm-svn: 34578

llvm-svn: 34577

llvm-svn: 34576

Nicolas Geoffray!

llvm-svn: 34574

llvm-svn: 34573

llvm-svn: 34572

llvm-svn: 34571

Handle the single word cases for shiftAmt == BitWidth.

llvm-svn: 34569

llvm-svn: 34568

llvm-svn: 34567

llvm-svn: 34565

llvm-svn: 34564

from README.
When no water available, use end of block if in range.  (More to do here.)

llvm-svn: 34563

llvm-svn: 34562

2. Fix shl when shiftAmount == BitWidth.

llvm-svn: 34560

2. Clean up comments, style, coding standards, etc.
3. Simplify a constructor.

Extended testing revealed some additional bugs in shifting. I'll fix these
tomorrow.

llvm-svn: 34559

llvm-svn: 34556

llvm-svn: 34555

   to be safe.
2. Make internal functions that return a carry/borrow return bool instead
   of uint64_t because the carry/borrow can only be in range [0,1].
3. Assert that the pointers to KnuthDiv are all different so that the
   result and operands can't overlap.
4. Add debug output to KnuthDiv function.
5. Fix a problem with KnuthDiv by separating the b's complement operation
   from the subtraction borrow operation. This fixes a wide range of
   division problems, but alas, not all of them.

llvm-svn: 34554

llvm-svn: 34552

llvm-svn: 34551

llvm-svn: 34549

llvm-svn: 34548

llvm-svn: 34546

solve a crash in -instcombine -debug that was hit while investigating PR1217

llvm-svn: 34544