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2260 Commits

Author SHA1 Message Date
Chris Lattner
e6302b3565 add emitter support for integer constants and simple physreg references. 
llvm-svn: 96663
 2010-02-19 07:49:56 +00:00
Chris Lattner
80491f4c52 fix this to work more determinstically, patch by Thomas Veith! 
llvm-svn: 96661
 2010-02-19 07:02:20 +00:00
Chris Lattner
28cc2f3f44 I confused myself, temporaries will be recorded right along with other inputs. 
llvm-svn: 96639
 2010-02-19 00:33:13 +00:00
Chris Lattner
fc0b27563f introduce a new ResultVal and start keeping track of temporary values. 
llvm-svn: 96636
 2010-02-19 00:27:40 +00:00
Chris Lattner
4cfdecc52b add support for referencing registers and immediates, 
building the tree to represent them but not emitting 
table entries for them yet.

llvm-svn: 96617
 2010-02-18 22:03:03 +00:00
Chris Lattner
5bc53ac6f5 start sketching out the structure of code for result emission generation. 
Nothing real here yet.

llvm-svn: 96575
 2010-02-18 06:47:49 +00:00
Chris Lattner
76506b3749 rename the child field to 'next'. This is not a parent/child 
relationship, this is a linear list relationship.

llvm-svn: 96561
 2010-02-18 02:53:41 +00:00
Chris Lattner
955650be1f eliminate the MatcherNodeWithChild class, give the 'child' 
field to MatcherNode.

llvm-svn: 96560
 2010-02-18 02:49:24 +00:00
Chris Lattner
025ca7158a fit in 80 cols 
llvm-svn: 96541
 2010-02-18 00:23:27 +00:00
Chris Lattner
a1f12685c7 redisable this to save people a small amount of build time. 
llvm-svn: 96497
 2010-02-17 19:19:50 +00:00
Chris Lattner
2ec1f1a54a move isOnlyReachableByFallthrough out of MachineBasicBlock into AsmPrinter, 
and add a sparc implementation that knows about delay slots.  Patch by
Nathan Keynes!

llvm-svn: 96492
 2010-02-17 18:52:56 +00:00
Chris Lattner
b8c69426ef reduce nesting. 
llvm-svn: 96466
 2010-02-17 06:53:36 +00:00
Chris Lattner
143e2b6181 improve comments, the matcher is now feature complete, on to codegen. 
llvm-svn: 96464
 2010-02-17 06:47:35 +00:00
Chris Lattner
955ce23e27 sink special case "cannotyetselect" for intrinsics out of the 
tblgen splatted code into the implementation.

llvm-svn: 96460
 2010-02-17 06:28:22 +00:00
Chris Lattner
8f3afbc621 Emulate the current isel's "IsChainCompatible" logic for now. 
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
 2010-02-17 06:23:39 +00:00
Chris Lattner
15eb8504cd properly record chain inputs to complex patterns, 
resolving a fixme.

llvm-svn: 96457
 2010-02-17 06:08:25 +00:00
Chris Lattner
abb5e906a7 simplify IsChainCompatible codegen, add comments. no 
functionality change.

llvm-svn: 96453
 2010-02-17 05:35:28 +00:00
Chris Lattner
44d2031ca8 Prep work to handle input chains of matched patterns and checking for 
'ischaincompatible' when a pattern has more than one input chain.  Need
to do some commenting and cleanup now that I understand how this works.

llvm-svn: 96443
 2010-02-17 02:16:19 +00:00
Chris Lattner
ac9295346b record input chains. 
llvm-svn: 96437
 2010-02-17 01:34:15 +00:00
Chris Lattner
a6df2a60e5 prefix captured value names with $ so they look like 
variables.  Use the fancy OpNo variable instead of i,
which has the right index including chains.

llvm-svn: 96436
 2010-02-17 01:27:29 +00:00
Chris Lattner
ab430d225c improve comments on OPC_Record to say what we're recording a node. 
llvm-svn: 96433
 2010-02-17 01:03:09 +00:00
Chris Lattner
fdd452441a improve comments in generated matcher a bit. 
llvm-svn: 96422
 2010-02-17 00:39:26 +00:00
Chris Lattner
1f818d2e25 make the new isel generator plop out a CheckComplexPattern function 
for evaluating complex patterns.  Some cleanup has to happen before
this can be used though.

llvm-svn: 96419
 2010-02-17 00:31:50 +00:00
Chris Lattner
ebf80812e3 fix inverted condition. 
llvm-svn: 96416
 2010-02-17 00:11:30 +00:00
Chris Lattner
3499eaaac1 complex patterns don't get 'record' nodes, they implicitly 
record all their results.

llvm-svn: 96412
 2010-02-16 23:16:25 +00:00
Chris Lattner
c89e98d63b clean up some code, eliminate NodeIsComplexPattern, which 
does the same thing as getComplexPatternInfo.

llvm-svn: 96411
 2010-02-16 23:13:59 +00:00
Chris Lattner
617c3a5c69 fix indentation 
llvm-svn: 96409
 2010-02-16 22:38:31 +00:00
Chris Lattner
0d35c68d5c fix rdar://7653908, a crash on a case where we would fold a load 
into a roundss intrinsic, producing a cyclic dag.  The root cause
of this is badness handling ComplexPattern nodes in the old dagisel
that I noticed through inspection.  Eliminate a copy of the of the
code that handled ComplexPatterns by making EmitChildMatchCode call
into EmitMatchCode.

llvm-svn: 96408
 2010-02-16 22:35:06 +00:00
Chris Lattner
cafd2c75a1 simplify this code. In the new world order there is no 
need to scan the entire subtree of the pattern anymore.

llvm-svn: 96369
 2010-02-16 19:19:58 +00:00
Chris Lattner
ebcd505b14 convert the new matcher to check intermediate nodes for a single 
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
 2010-02-16 19:15:55 +00:00
Chris Lattner
eba9f75b00 change dag isel emitter to only call 'IsProfitableToFold' on nodes 
with chains.  On interior nodes that lead up to them, we just directly
check that there is a single use.  This generates slightly more
efficient code.

llvm-svn: 96366
 2010-02-16 19:03:34 +00:00
Chris Lattner
2507e6b51f mark all the generated node predicates 'const'. 
llvm-svn: 96337
 2010-02-16 07:26:36 +00:00
Chris Lattner
a9550b6d27 generate code for node and pattern predicates. Note that this won't 
build if enabled, it will fail with constness issues. I'll resolve 
these next.

llvm-svn: 96336
 2010-02-16 07:21:10 +00:00
Chris Lattner
5a026d7367 refactor some code into a local class. 
llvm-svn: 96334
 2010-02-16 06:52:01 +00:00
Chris Lattner
eb72054cb3 remove now dead code and fixme. 
llvm-svn: 96333
 2010-02-16 06:15:00 +00:00
Chris Lattner
5901090df8 remove dead code. This is never generated for any targets in mainline. 
llvm-svn: 96332
 2010-02-16 06:14:22 +00:00
Chris Lattner
104828612b add support for the new isel matcher to generate 
(isprofitable|islegal)tofold checks.

llvm-svn: 96331
 2010-02-16 06:10:58 +00:00
Evan Cheng
b5fe25544c Split SelectionDAGISel::IsLegalAndProfitableToFold to 
IsLegalToFold and IsProfitableToFold. The generic version of the later simply checks whether the folding candidate has a single use.

This allows the target isel routines more flexibility in deciding whether folding makes sense. The specific case we are interested in is folding constant pool loads with multiple uses.

llvm-svn: 96255
 2010-02-15 19:41:07 +00:00
Chris Lattner
bc3bc62709 Check in the first big step of rewriting DAGISelEmitter to 
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
 2010-02-15 08:04:42 +00:00
Mikhail Glushenkov
47bcd93456 Revert r96130 ("Forward parameter options as '-option=param'"). 
This behaviour must be configurable.

llvm-svn: 96210
 2010-02-15 03:17:06 +00:00
Chris Lattner
3d4086208b constize 
llvm-svn: 96199
 2010-02-14 22:33:49 +00:00
Chris Lattner
4a7b56d74e clean up a bunch of code, move some random predicates 
on TreePatternNode to be methods on TreePatternNode.

llvm-svn: 96197
 2010-02-14 22:22:58 +00:00
Chris Lattner
8d7e9178d4 remove the DisablePatternForFastISel predicate, which is a check 
that predated -fast-isel which attempted to speed up the dag pattern
matchers at -O0.  Since fast-isel is around, this is basically 
obsolete and removing it shrinks the generated dag isels.

llvm-svn: 96188
 2010-02-14 21:11:53 +00:00
Chris Lattner
1a9a2e116d add an insertion operator. 
llvm-svn: 96187
 2010-02-14 21:10:33 +00:00
Chris Lattner
216edab8dd tidy up 
llvm-svn: 96186
 2010-02-14 21:10:15 +00:00
Mikhail Glushenkov
09bf7f44e8 Forward parameter options as '-option=parameter'. 
Some tools do not like the '-option parameter' form. Should this be
configurable?

llvm-svn: 96130
 2010-02-13 22:37:28 +00:00
Chris Lattner
d971210bd9 pull a bunch of huge inline methods in the PatternCodeEmitter 
class out of line.

llvm-svn: 96113
 2010-02-13 20:06:50 +00:00
Sean Callanan
0bc10793b0 Added the rdtscp instruction to the x86 instruction 
tables.

llvm-svn: 96073
 2010-02-13 02:06:11 +00:00
Sean Callanan
9806eade6e Fixed encodings for invlpg, invept, and invvpid. 
llvm-svn: 96065
 2010-02-13 01:48:34 +00:00
Chris Lattner
5b01ab848c remove special cases for vmlaunch, vmresume, vmxoff, and swapgs 
fix swapgs to be spelled right.

llvm-svn: 96058
 2010-02-13 00:41:14 +00:00