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62 Commits

Author SHA1 Message Date
Jim Laskey
1c928ba21a Added allnodes_size for scheduling support. 
llvm-svn: 23567
 2005-09-30 19:27:01 +00:00
Chris Lattner
b68c833b48 Add a new argument to ReplaceAllUsesWith to keep track of nodes deleted by 
this method

llvm-svn: 23254
 2005-09-07 05:36:18 +00:00
Chris Lattner
7862cff120 add a map for nullary ops 
llvm-svn: 23223
 2005-09-02 19:35:42 +00:00
Nate Begeman
be2fa8f86f First pass at the DAG Combiner. It isn't used anywhere yet, but it should 
be mostly functional.  It currently has all folds from SelectionDAG.cpp
that do not involve a condition code.

llvm-svn: 23184
 2005-09-01 00:19:25 +00:00
Chris Lattner
b06ce2e026 Allow physregs to occur in the dag with multiple types. Though I don't like 
this, it is a requirement on PPC, which can have an f32 value in r3 at one
point in a function and a f64 value in r3 at another point.  :(

llvm-svn: 23160
 2005-08-30 22:38:05 +00:00
Chris Lattner
d6753aa388 add some method variants 
llvm-svn: 23142
 2005-08-30 01:56:13 +00:00
Chris Lattner
05f6bb1b68 Add a new API for nate 
llvm-svn: 23132
 2005-08-29 22:00:00 +00:00
Chris Lattner
25b6e62a46 Add a new version of ReplaceAllUsesWith, make the comments more useful. 
llvm-svn: 23086
 2005-08-26 18:35:58 +00:00
Chris Lattner
a31708e6b3 Change ConstantPoolSDNode to actually hold the Constant itself instead of 
putting it into the constant pool.  This allows the isel machinery to
create constants that it will end up deciding are not needed, without them
ending up in the resultant function constant pool.

llvm-svn: 23081
 2005-08-26 17:15:30 +00:00
Chris Lattner
929c00e9e9 Fix a huge annoyance: SelectNodeTo took types before the opcode unlike 
every other SD API.  Fix it to take the opcode before the types.

llvm-svn: 23079
 2005-08-26 16:36:26 +00:00
Chris Lattner
70cc927742 add a method 
llvm-svn: 23049
 2005-08-25 17:24:09 +00:00
Chris Lattner
70cb011425 Add support for TargetConstantPool node 
llvm-svn: 23040
 2005-08-25 05:02:41 +00:00
Chris Lattner
813f6ddaf8 add a new TargetFrameIndex node 
llvm-svn: 23035
 2005-08-25 00:43:01 +00:00
Chris Lattner
22c6c99e5d add a method 
llvm-svn: 23027
 2005-08-24 23:00:29 +00:00
Chris Lattner
79191b194f add two new methods 
llvm-svn: 23024
 2005-08-24 22:43:53 +00:00
Chris Lattner
a51be5a84c add a method 
llvm-svn: 22958
 2005-08-21 22:30:42 +00:00
Chris Lattner
5c82be2ffc ADd a method 
llvm-svn: 22954
 2005-08-21 19:48:53 +00:00
Chris Lattner
d76cf28d13 Add 5-operand version of SelectNodeTo 
llvm-svn: 22950
 2005-08-21 18:49:58 +00:00
Chris Lattner
0c4565bf91 ADd support for TargetGlobalAddress nodes 
llvm-svn: 22939
 2005-08-19 22:31:34 +00:00
Nate Begeman
0966f7d0b9 Add support for target nodes with more than 3 operands, required by ppc 
llvm-svn: 22894
 2005-08-19 00:56:28 +00:00
Nate Begeman
474ec3c02d Add support for target DAG nodes that take 4 operands, such as PowerPC's 
rlwinm.

llvm-svn: 22856
 2005-08-18 07:30:15 +00:00
Chris Lattner
14518a342f add ReplaceAllUsesWith, and a helper to implemented it 
llvm-svn: 22833
 2005-08-17 18:59:17 +00:00
Chris Lattner
3895acdb6a add some helper methods, and a new TargetConstant node, which is not 
subjected to folding.

llvm-svn: 22812
 2005-08-17 00:33:30 +00:00
Chris Lattner
3b7e157005 Eliminate the RegSDNode class, which 3 nodes (CopyFromReg/CopyToReg/ImplicitDef) 
used to tack a register number onto the node.

Instead of doing this, make a new node, RegisterSDNode, which is a leaf
containing a register number.  These three operations just become normal
DAG nodes now, instead of requiring special handling.

Note that with this change, it is no longer correct to make illegal
CopyFromReg/CopyToReg nodes.  The legalizer will not touch them, and this
is bad, so don't do it. :)

llvm-svn: 22806
 2005-08-16 21:55:35 +00:00
Nate Begeman
f6b6378f23 Implement BR_CC and BRTWOWAY_CC. This allows the removal of a rather nasty 
fixme from the PowerPC backend.  Emit slightly better code for legalizing
select_cc.

llvm-svn: 22805
 2005-08-16 19:49:35 +00:00
Chris Lattner
0b9933e14b add some methods for dag->dag isel 
llvm-svn: 22800
 2005-08-16 18:16:24 +00:00
Nate Begeman
021a5b3fe1 Remove an unncessary argument to SimplifySelectCC and add an additional 
assert when creating a select_cc node.

llvm-svn: 22780
 2005-08-13 06:14:17 +00:00
Nate Begeman
4e8f777256 Fix the fabs regression on x86 by abstracting the select_cc optimization 
out into SimplifySelectCC.  This allows both ISD::SELECT and ISD::SELECT_CC
to use the same set of simplifying folds.

llvm-svn: 22779
 2005-08-13 06:00:21 +00:00
Nate Begeman
206e850add Some SELECT_CC cleanups: 
1. move assertions for node creation to getNode()
2. legalize the values returned in ExpandOp immediately
3. Move select_cc optimizations from SELECT's getNode() to SELECT_CC's,
   allowing them to be cleaned up significantly.

This paves the way to pick up additional optimizations on SELECT_CC, such
as sum-of-absolute-differences.

llvm-svn: 22757
 2005-08-11 01:12:20 +00:00
Nate Begeman
eddc9d4856 Add new node, SELECT_CC. This node is for targets that don't natively 
implement SELECT.

llvm-svn: 22755
 2005-08-10 20:51:12 +00:00
Chris Lattner
40937543ee I can't believe I caught this before Misha! :) 
llvm-svn: 22733
 2005-08-09 23:08:53 +00:00
Chris Lattner
0fa4402b59 Eliminate the SetCCSDNode in favor of a CondCodeSDNode class. This pulls the 
CC out of the SetCC operation, making SETCC a standard ternary operation and
CC's a standard DAG leaf.  This will make it possible for other node to use
CC's as operands in the future...

llvm-svn: 22728
 2005-08-09 20:20:18 +00:00
Chris Lattner
6e49696ba6 Change *EXTLOAD to use an VTSDNode operand instead of being an MVTSDNode. 
This is the last MVTSDNode.

This allows us to eliminate a bunch of special case code for handling
MVTSDNodes.

llvm-svn: 22367
 2005-07-10 01:55:33 +00:00
Chris Lattner
a966d80ab8 Move TRUNCSTORE to using a VTSDNode operand instead of being a MVTSDNode. 
Also update some comments that Andrew forgot to update when he changed
loads/stores.

llvm-svn: 22365
 2005-07-10 00:28:25 +00:00
Chris Lattner
c355896290 Introduce a new VTSDNode class with the ultimate goal of eliminating the 
MVTSDNode class.  This class is used to provide an operand to operators
that require an extra type.  We start by converting FP_ROUND_INREG and
SIGN_EXTEND_INREG over to using it.

llvm-svn: 22364
 2005-07-10 00:07:11 +00:00
Chris Lattner
b9ccf966b8 add a new map 
llvm-svn: 22017
 2005-05-14 07:36:02 +00:00
Chris Lattner
1032d777e6 Add a way to construct an arbitrary node, cleanly. 
llvm-svn: 22008
 2005-05-14 06:20:08 +00:00
Chris Lattner
97505aa9ac add TAILCALL node 
llvm-svn: 21956
 2005-05-13 18:40:17 +00:00
Chris Lattner
9aedca57b1 Add READPORT, WRITEPORT, READIO, WRITEIO nodes, wrap long lines 
llvm-svn: 21823
 2005-05-09 20:21:27 +00:00
Andrew Lenharth
8b64bd0fd5 Implement count leading zeros (ctlz), count trailing zeros (cttz), and count 
population (ctpop).  Generic lowering is implemented, however only promotion
is implemented for SelectionDAG at the moment.

More coming soon.

llvm-svn: 21676
 2005-05-03 17:19:30 +00:00
Andrew Lenharth
2a00530fa7 Implement Value* tracking for loads and stores in the selection DAG. This enables one to use alias analysis in the backends. 
(TRUNK)Stores and (EXT|ZEXT|SEXT)Loads have an extra SDOperand which is a SrcValueSDNode which contains the Value*.  Note that if the operation is introduced by the backend, it will still have the operand, but the value* will be null.

llvm-svn: 21599
 2005-04-27 20:10:01 +00:00
Misha Brukman
4ad5efd1a9 Remove trailing whitespace 
llvm-svn: 21409
 2005-04-21 20:39:54 +00:00
Chris Lattner
41aabb9427 Add a new helper method which returns the and that is equivalent to what 
ZERO_EXTEND_INREG was.

llvm-svn: 21264
 2005-04-13 02:37:19 +00:00
Chris Lattner
10f39c27ee Map doubles from integers, not the double itself. 
llvm-svn: 20229
 2005-02-17 20:16:58 +00:00
Chris Lattner
519fcf19c2 Give SelectionDAG a TargetLowering instance instead of TM instance. 
llvm-svn: 19778
 2005-01-23 04:36:06 +00:00
Chris Lattner
7005632b59 Add an accessor for targets that pass args in regs 
llvm-svn: 19702
 2005-01-19 20:19:58 +00:00
Chris Lattner
0697def39d Keep track of the returned value type as well. 
llvm-svn: 19669
 2005-01-18 19:26:18 +00:00
Chris Lattner
818e819e43 Allow setcc operations to have non-bool types. 
llvm-svn: 19655
 2005-01-18 02:51:41 +00:00
Chris Lattner
2f65e8798f Add new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators. 
llvm-svn: 19568
 2005-01-15 06:17:04 +00:00
Chris Lattner
3df2651c81 Change CopyFromReg to take and produce a chain node, allowing it to be used 
with physregs that are not live across the entire block.

llvm-svn: 19560
 2005-01-14 22:37:20 +00:00