825298b060
Make the generated code significantly more memory efficient, by using
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SelectNodeTo instead of getTargetNode when possible.
llvm-svn: 23758
2005-10-16 01:41:58 +00:00
6b22d2554a
Implement the last major missing piece in the DAG isel generator: when emitting
...
a pattern match, make sure to emit the (minimal number of) type checks that
verify the pattern matches this specific instruction. This allows FMA32
patterns to not match double expressions for example.
llvm-svn: 23748
2005-10-15 21:34:21 +00:00
c4db8f4163
Now that we have int/fp lattice values, implement the SDTCisOpSmallerThanOp
...
type constraint. This lets tblgen realize that it doesn't need any dynamic
type checks for fextend/fround on PPC (and many other targets), because there
are only two fp types.
llvm-svn: 23730
2005-10-14 06:25:00 +00:00
ecaf56b21a
Fairly serious rework of the typing code to add new int/fp lattice values.
...
Overall, no functionality change yet though.
llvm-svn: 23729
2005-10-14 06:12:03 +00:00
cdf483556f
simplify the code a bit
...
llvm-svn: 23728
2005-10-14 05:08:37 +00:00
4892df38f3
Add basic support for recognizing a new SDTCisOpSmallerThanOp type constraint
...
llvm-svn: 23725
2005-10-14 04:53:53 +00:00
7b0275ba8c
Implement a couple of new (important) features.
...
1. If an operation has to be int or fp and the target only supports one
int or fp type, relize that the op has to have that type.
2. If a target has operations on multiple types, do not emit matching code
for patterns involving those operators, since we do not emit the code to
check for them yet. This prevents PPC from generating FP ops currently.
Also move some code around into more logical places.
llvm-svn: 23724
2005-10-14 04:11:13 +00:00
366fe04301
Teach tablegen to reassociate operators when possible. This allows it to
...
find all of teh pattern matches for EQV from one definition
llvm-svn: 23529
2005-09-29 22:36:54 +00:00
e86824e57a
Teach tblgen to build permutations of instructions, so that the target author
...
doesn't have to specify them manually. It currently handles associativity,
e.g. knowing that (X*Y)+Z also matches X+(Y*Z) and will be extended in
the future.
It is smart enough to not introduce duplicate patterns or patterns that can
never match.
llvm-svn: 23526
2005-09-29 19:28:10 +00:00
492e70f4ec
add support for an associative marker
...
llvm-svn: 23502
2005-09-28 20:58:06 +00:00
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
f74c30c281
collect commutativity information
...
llvm-svn: 23499
2005-09-28 18:28:29 +00:00
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
75b4c5d868
Select Constant nodes to TargetConstant nodes
...
llvm-svn: 23488
2005-09-28 16:58:06 +00:00
d455c36c91
memoize the assert results
...
llvm-svn: 23457
2005-09-26 22:10:24 +00:00
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
d5de8544f8
implement a fixme: only select values once, even if used multiple times.
...
llvm-svn: 23454
2005-09-26 21:53:26 +00:00
23b1d28e69
Fix VC++ build errors.
...
llvm-svn: 23431
2005-09-25 19:04:43 +00:00
cc1d38160d
memoize translations
...
llvm-svn: 23419
2005-09-24 00:50:51 +00:00
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
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
8ffb99b4fe
Fix a fixme by passing around SDOperand's instead of SDNode*'s
...
llvm-svn: 23415
2005-09-23 21:53:45 +00:00
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
323a47970e
emit information about the order patterns are to be matched.
...
llvm-svn: 23413
2005-09-23 20:52:47 +00:00
abb430bad2
start filling in the switch stmt
...
llvm-svn: 23412
2005-09-23 19:36:15 +00:00
7884fffb00
Fix a minor bug, add comments
...
llvm-svn: 23370
2005-09-16 00:29:46 +00:00
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
fedd9a5e1d
put instructions into a map instead of a vector for quick lookup
...
llvm-svn: 23368
2005-09-15 21:57:35 +00:00
f38ce8f756
when parsing instructions remember information about the types taken and
...
returned.
llvm-svn: 23367
2005-09-15 21:51:12 +00:00
a0a986c9ae
Start parsing "Pattern" nodes
...
llvm-svn: 23365
2005-09-15 21:42:00 +00:00
f79ad4cb32
rename a couple of methods, add structure for pattern parsing
...
llvm-svn: 23364
2005-09-15 02:38:02 +00:00
a155256a71
Verify that xform functions only occur in logical places
...
llvm-svn: 23363
2005-09-14 23:05:13 +00:00
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
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
e389c6154e
catch unnamed inputs
...
llvm-svn: 23360
2005-09-14 22:06:36 +00:00
030f876cf2
check that there are no unexpected operands
...
llvm-svn: 23359
2005-09-14 21:59:34 +00:00
3ced3f8b82
force all instruction operands to be named.
...
llvm-svn: 23358
2005-09-14 21:13:50 +00:00
24ae3494f0
fix a broke range check
...
llvm-svn: 23354
2005-09-14 21:04:12 +00:00
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
22e60c99ce
Verify that set destinations occur first in the instruction operand list.
...
llvm-svn: 23351
2005-09-14 18:19:25 +00:00
1c8d6ce015
remove some code that isn't ready for prime time
...
llvm-svn: 23346
2005-09-14 06:03:10 +00:00
3361eab530
Switch to a slightly more structured representation for instructions
...
llvm-svn: 23345
2005-09-14 04:03:16 +00:00
4cfcb544bf
Add some more checking/verification code
...
llvm-svn: 23344
2005-09-14 02:11:12 +00:00
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
bb9b01644e
don't emit the namespace inside the class!
...
llvm-svn: 23341
2005-09-13 22:05:02 +00:00
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
3556d849da
continue xform function parsing
...
llvm-svn: 23338
2005-09-13 21:59:15 +00:00
2617de498d
Start parsing node transformation information
...
llvm-svn: 23337
2005-09-13 21:51:00 +00:00
f365e25a5c
completely eliminate TreePattern::PatternType
...
llvm-svn: 23335
2005-09-13 21:20:49 +00:00
ce2173d098
add an accessor to provide more checking
...
llvm-svn: 23289
2005-09-09 01:15:01 +00:00
Chris Lattner