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498 Commits

Author SHA1 Message Date
Chris Lattner 8bb25cd68a Emit an error if instructions or patterns are defined but can never match. 
Currently we check that immediate values live on the RHS of commutative
operators.  Defining ORI like this, for example:

def ORI   : DForm_4<24, (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "ori $dst, $src1, $src2",
                    [(set GPRC:$dst, (or immZExt16:$src2, GPRC:$src1))]>;

results in:

tblgen: In ORI: Instruction can never match: Immediate values must be on the RHS of commutative operators!
llvm-svn: 23501
 2005-09-28 19:27:25 +00:00
Chris Lattner f74c30c281 collect commutativity information 
llvm-svn: 23499
 2005-09-28 18:28:29 +00:00
Chris Lattner 3622f15491 Prefer cheaper patterns to more expensive ones. Print the costs to the generated 
file

llvm-svn: 23492
 2005-09-28 17:57:56 +00:00
Chris Lattner 75b4c5d868 Select Constant nodes to TargetConstant nodes 
llvm-svn: 23488
 2005-09-28 16:58:06 +00:00
Chris Lattner d455c36c91 memoize the assert results 
llvm-svn: 23457
 2005-09-26 22:10:24 +00:00
Chris Lattner c9153266c6 Emit the switch stmt cases in alphabetical order instead of pointer order, 
which is not stable.

llvm-svn: 23456
 2005-09-26 21:59:35 +00:00
Chris Lattner d5de8544f8 implement a fixme: only select values once, even if used multiple times. 
llvm-svn: 23454
 2005-09-26 21:53:26 +00:00
Jeff Cohen 23b1d28e69 Fix VC++ build errors. 
llvm-svn: 23431
 2005-09-25 19:04:43 +00:00
Chris Lattner cc1d38160d memoize translations 
llvm-svn: 23419
 2005-09-24 00:50:51 +00:00
Chris Lattner 0afb14cade Teach the DAG isel generator to emit code that creates nodes. 
Fix a few corner cases parsing things like (i32 imm:$foo)

llvm-svn: 23417
 2005-09-24 00:40:24 +00:00
Chris Lattner cd093e868e Emit better code (no more copies for var references), and support DAG patterns 
(e.g. things like rotates).

llvm-svn: 23416
 2005-09-23 23:16:51 +00:00
Chris Lattner 8ffb99b4fe Fix a fixme by passing around SDOperand's instead of SDNode*'s 
llvm-svn: 23415
 2005-09-23 21:53:45 +00:00
Chris Lattner cc8a564cb1 Emit code that matches the incoming DAG pattern and checks predicates. 
This does not check that types match yet, but PPC only has one integer type
;-).

This also doesn't have the code to build the resultant dag.

llvm-svn: 23414
 2005-09-23 21:33:23 +00:00
Chris Lattner 323a47970e emit information about the order patterns are to be matched. 
llvm-svn: 23413
 2005-09-23 20:52:47 +00:00
Chris Lattner abb430bad2 start filling in the switch stmt 
llvm-svn: 23412
 2005-09-23 19:36:15 +00:00
Chris Lattner 7884fffb00 Fix a minor bug, add comments 
llvm-svn: 23370
 2005-09-16 00:29:46 +00:00
Chris Lattner 59e96143a2 teach the type inference code how to infer types for instructions and node 
xforms.  Run type inference on result patterns, so we always have fully typed
results (and to catch errors in .td files).

llvm-svn: 23369
 2005-09-15 22:23:50 +00:00
Chris Lattner fedd9a5e1d put instructions into a map instead of a vector for quick lookup 
llvm-svn: 23368
 2005-09-15 21:57:35 +00:00
Chris Lattner f38ce8f756 when parsing instructions remember information about the types taken and 
returned.

llvm-svn: 23367
 2005-09-15 21:51:12 +00:00
Chris Lattner a0a986c9ae Start parsing "Pattern" nodes 
llvm-svn: 23365
 2005-09-15 21:42:00 +00:00
Chris Lattner f79ad4cb32 rename a couple of methods, add structure for pattern parsing 
llvm-svn: 23364
 2005-09-15 02:38:02 +00:00
Chris Lattner a155256a71 Verify that xform functions only occur in logical places 
llvm-svn: 23363
 2005-09-14 23:05:13 +00:00
Chris Lattner 991c7c973a Promote xform fns to be explicit nodes in result patterns, and clean off 
predicates since they will have already matched at this point.

llvm-svn: 23362
 2005-09-14 23:01:59 +00:00
Chris Lattner bc7aabce12 start building the instruction dest pattern correctly. Change the xform 
functions to preserve the Record for the xform instead of making it into a
function name.

llvm-svn: 23361
 2005-09-14 22:55:26 +00:00
Chris Lattner e389c6154e catch unnamed inputs 
llvm-svn: 23360
 2005-09-14 22:06:36 +00:00
Chris Lattner 030f876cf2 check that there are no unexpected operands 
llvm-svn: 23359
 2005-09-14 21:59:34 +00:00
Chris Lattner 3ced3f8b82 force all instruction operands to be named. 
llvm-svn: 23358
 2005-09-14 21:13:50 +00:00
Chris Lattner 24ae3494f0 fix a broke range check 
llvm-svn: 23354
 2005-09-14 21:04:12 +00:00
Chris Lattner 3ba60bf644 Parse significantly more of the instruction pattern, now collecting and 
verifying information about the operands.

llvm-svn: 23353
 2005-09-14 20:53:42 +00:00
Chris Lattner 22e60c99ce Verify that set destinations occur first in the instruction operand list. 
llvm-svn: 23351
 2005-09-14 18:19:25 +00:00
Chris Lattner 1c8d6ce015 remove some code that isn't ready for prime time 
llvm-svn: 23346
 2005-09-14 06:03:10 +00:00
Chris Lattner 3361eab530 Switch to a slightly more structured representation for instructions 
llvm-svn: 23345
 2005-09-14 04:03:16 +00:00
Chris Lattner 4cfcb544bf Add some more checking/verification code 
llvm-svn: 23344
 2005-09-14 02:11:12 +00:00
Chris Lattner 4c7b604091 start parsing instructions into patterns, start doing many more checks of 
'set's.

llvm-svn: 23343
 2005-09-14 00:09:24 +00:00
Chris Lattner bb9b01644e don't emit the namespace inside the class! 
llvm-svn: 23341
 2005-09-13 22:05:02 +00:00
Chris Lattner 70a7234111 Emit code suitable for emission into the ISel class, allowing us to use/define 
methods.

llvm-svn: 23340
 2005-09-13 22:03:37 +00:00
Chris Lattner 3556d849da continue xform function parsing 
llvm-svn: 23338
 2005-09-13 21:59:15 +00:00
Chris Lattner 2617de498d Start parsing node transformation information 
llvm-svn: 23337
 2005-09-13 21:51:00 +00:00
Chris Lattner f365e25a5c completely eliminate TreePattern::PatternType 
llvm-svn: 23335
 2005-09-13 21:20:49 +00:00
Chris Lattner ce2173d098 add an accessor to provide more checking 
llvm-svn: 23289
 2005-09-09 01:15:01 +00:00
Chris Lattner 7a82c06f34 use new accessors to simplify code. Add checking to make sure top-level instr 
definitions are void

llvm-svn: 23288
 2005-09-09 01:11:44 +00:00
Chris Lattner debd6e95ab Fix incorrect comment 
llvm-svn: 23285
 2005-09-08 23:26:30 +00:00
Chris Lattner d7d31f3b06 Implement a complete type inference system for dag patterns, based on the 
constraints defined in the DAG node definitions in the .td files.  This
allows us to infer (and check!) the types for all nodes in the current
ppc .td file.  For example, instead of:

Inst pattern EQV:       (set GPRC:i32:$rT, (xor (xor GPRC:i32:$rA, GPRC:i32:$rB), (imm)<<Predicate_immAllOnes>>))

we now fully infer:

Inst pattern EQV:       (set:void GPRC:i32:$rT, (xor:i32 (xor:i32 GPRC:i32:$rA, GPRC:i32:$rB), (imm:i32)<<Predicate_immAllOnes>>))

from:  (set GPRC:$rT, (not (xor GPRC:$rA, GPRC:$rB)))
llvm-svn: 23284
 2005-09-08 23:22:48 +00:00
Chris Lattner 1c33104010 Parse information about type constraints on SDNodes 
llvm-svn: 23281
 2005-09-08 21:27:15 +00:00
Chris Lattner a3b89dfcef use node info in the one place we currently use it 
llvm-svn: 23280
 2005-09-08 21:04:46 +00:00
Chris Lattner 35bcd1488a start parsing SDNode info records 
llvm-svn: 23279
 2005-09-08 21:03:01 +00:00
Chris Lattner 399f59f643 Keep names even when inlining. This allows us to realize that ADDI is: 
(set GPRC:i32:$rD, (add GPRC:i32:$rA, (imm)<<Predicate_immSExt16>>:$imm))

not:

(set GPRC:i32:$rD, (add GPRC:i32:$rA, (imm)<<Predicate_immSExt16>>))

(we keep the ":$imm")

llvm-svn: 23269
 2005-09-08 17:45:12 +00:00
Chris Lattner d2a5b366f5 Initial cut of the dag isel generator. This is still very much a work in 
progress.  It correctly parses instructions and pattern fragments and glues
together pattern fragments into instructions.

The only code it generates currently is some boilerplate code for things
like the EntryNode.

llvm-svn: 23261
 2005-09-07 23:44:43 +00:00