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2279 Commits

Author SHA1 Message Date
Chris Lattner
df30185383 reject patterns that mention a name in the destination pattern 
but not in the input.  Previously, this would trigger an abort
late in the isel logic.

llvm-svn: 96898
 2010-02-23 06:35:45 +00:00
Chris Lattner
1a749c367d merge some code. 
llvm-svn: 96896
 2010-02-23 06:16:51 +00:00
Chris Lattner
4c22c51356 more tidying up 
llvm-svn: 96891
 2010-02-23 05:59:10 +00:00
Chris Lattner
55115233db reduce indentation by eliminating 'else after return' 
llvm-svn: 96889
 2010-02-23 05:51:07 +00:00
Chris Lattner
49b1b721fc really fix an off-by-one error 
llvm-svn: 96845
 2010-02-23 01:07:39 +00:00
Chris Lattner
68fd68d9ff switch the value# in OPC_CompleteMatch and OPC_EmitNode to use a 
VBR encoding for the insanity being perpetrated by the spu backend. 

llvm-svn: 96843
 2010-02-23 00:59:59 +00:00
Chris Lattner
49ec9f853e add a new Push2 opcode for targets (like cellspu) which have 
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
 2010-02-22 23:55:39 +00:00
Chris Lattner
fbca302fe2 Change ComplexPattern handling to push the node being matched as 
well as the operands produced when the pattern is matched.  This
allows CheckSame to work correctly when matching replicated 
names involving ComplexPatterns.  This fixes a bunch of MSP430 
failures, we're down to 13 failures, two of which are
due to a sched bug.

llvm-svn: 96824
 2010-02-22 23:33:44 +00:00
Chris Lattner
1613c59dbe add a new CheckMultiOpcode opcode for checking that a node 
has one of the list of acceptable opcodes for a complex 
pattern.  This fixes 4 regtest failures.

llvm-svn: 96814
 2010-02-22 22:30:37 +00:00
Chris Lattner
b77c4c6a30 When matching patterns that have a complex pattern as their root, make 
sure to only run the complex pattern on nodes where the target opts in.
This patch only handles targets with one opcode specified so far, but
fixes 16 failures, only 34 left.

llvm-svn: 96813
 2010-02-22 22:18:05 +00:00
Chris Lattner
85fa3173ff fix most of the failures in the x86 suite by handling multiple 
result nodes correctly.  Note that this includes a horrible hack
in DAGISelHeader which cannot be fixed reasonably without 
eliminating (parallel) from input patterns.  That, in turn,
can't be done until we support writing multiple result patterns
for the X86and_flag and related multiple-result nodes.

llvm-svn: 96767
 2010-02-21 23:54:05 +00:00
Chris Lattner
691dcb90a4 Always emit register class id references as i32 like 
DAGISelEmitter does.  This fixes 11 arm failures (8 
left).

llvm-svn: 96757
 2010-02-21 20:53:45 +00:00
Chris Lattner
fc00a4e6b8 Sort the patterns before adding them to the FA so that we get the 
least cost matches.  This gets us from 195 -> 208 passes on the ppc codegen tests.

llvm-svn: 96747
 2010-02-21 19:22:06 +00:00
Chris Lattner
4a9c3615f8 emit table indexes before each row so that it is debuggable. 
llvm-svn: 96730
 2010-02-21 07:16:41 +00:00
Chris Lattner
594803ba50 fix a table size miscomputation, target opcodes are 2 bytes. 
With this, the matcher actually works reasonably well, but
crashes on larger examples in the scheduler.

llvm-svn: 96727
 2010-02-21 06:44:29 +00:00
Chris Lattner
98d6a38236 emit to the right streams, to avoid emitting the push 
body before the push.

llvm-svn: 96726
 2010-02-21 06:30:04 +00:00
Chris Lattner
359c75b60c oops don't turn this on for everyone yet. 
llvm-svn: 96725
 2010-02-21 06:03:56 +00:00
Chris Lattner
0164635dad implement the last known missing feature: updating uses of results 
of the matched pattern to use the newly created node results.  Onto
the "making it actually work" phase!

llvm-svn: 96724
 2010-02-21 06:03:07 +00:00
Chris Lattner
8983077c87 Lots of improvements to the new dagisel emitter. This gets it to 
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
 2010-02-21 03:22:59 +00:00
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