x86 table by 1200 bytes.

llvm-svn: 97053

llvm-svn: 97047

the old one around for comparative purposes: have the
ENABLE_NEW_ISEL #define (which is not enabled on mainline) stop
emitting the old isel at all, yay for build time win.

llvm-svn: 97033

the new isel: fold movechild+record+moveparent into a
single recordchild N node.  This shrinks the X86 table
from 125443 to 117502 bytes.

llvm-svn: 97031

internal nodes with flag results.  Record these with a new 
OPC_MarkFlagResults opcode and use this to update the interior
nodes' flag results properly.  This fixes CodeGen/X86/i256-add.ll
with the new isel.

llvm-svn: 97021

llvm-svn: 96845

VBR encoding for the insanity being perpetrated by the spu backend. 

llvm-svn: 96843

ridiculously ginormous patterns and need more than one byte
of displacement for encodings.  This fixes CellSPU/fdiv.ll.
SPU is still doing something else ridiculous though.

llvm-svn: 96833

has one of the list of acceptable opcodes for a complex 
pattern.  This fixes 4 regtest failures.

llvm-svn: 96814

llvm-svn: 96730

With this, the matcher actually works reasonably well, but
crashes on larger examples in the scheduler.

llvm-svn: 96727

body before the push.

llvm-svn: 96726

of the matched pattern to use the newly created node results.  Onto
the "making it actually work" phase!

llvm-svn: 96724

the point where it is to the 95% feature complete mark, it just
needs result updating to be done (then testing, optimization 
etc).

More specificallly, this adds support for chain and flag handling
on the result nodes, support for sdnodexforms, support for variadic
nodes, memrefs, pinned physreg inputs, and probably lots of other
stuff.

In the old DAGISelEmitter, this deletes the dead code related to
OperatorMap, cleans up a variety of dead stuff handling "implicit
remapping" from things like globaladdr -> targetglobaladdr (which
is no longer used because globaladdr always needs to be legalized),
and some minor formatting fixes.

llvm-svn: 96716

llvm-svn: 96663

building the tree to represent them but not emitting 
table entries for them yet.

llvm-svn: 96617

Nothing real here yet.

llvm-svn: 96575

relationship, this is a linear list relationship.

llvm-svn: 96561

field to MatcherNode.

llvm-svn: 96560

llvm-svn: 96464

I'd like to eventually rip it out, but for now producing the
same selections as the old matcher is more important.

llvm-svn: 96458

llvm-svn: 96433

llvm-svn: 96422

for evaluating complex patterns.  Some cleanup has to happen before
this can be used though.

llvm-svn: 96419

use and only call IsProfitableToFold/IsLegalToFold on the load
being folded, like the old dagiselemitter does.  This 
substantially simplifies the code and improves opportunities for
sharing.

llvm-svn: 96368

build if enabled, it will fail with constness issues. I'll resolve 
these next.

llvm-svn: 96336

llvm-svn: 96334

(isprofitable|islegal)tofold checks.

llvm-svn: 96331

produce a table based matcher instead of gobs of C++ Code.

Though it's not done yet, the shrinkage seems promising,
the table for the X86 ISel is 75K and still has a lot of 
optimization to come (compare to the ~1.5M of .o generated
the old way, much of which will go away).

The code is currently disabled by default (the #if 0 in
DAGISelEmitter.cpp).  When enabled it generates a dead
SelectCode2 function in the DAGISel Header which will
eventually replace SelectCode.

There is still a lot of stuff left to do, which are
documented with a trail of FIXMEs.

llvm-svn: 96215