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121 Commits

Author SHA1 Message Date
Chris Lattner
28369b8d7d Make getNodeValueTypes methods public. 
llvm-svn: 29688
 2006-08-14 23:54:24 +00:00
Chris Lattner
8e8d9a3358 Add a new getNode() method that takes a pointer to an already-intern'd list 
of value-type nodes.  This avoids having to do mallocs for std::vectors of
valuetypes when a node returns more than one type.

llvm-svn: 29685
 2006-08-14 23:31:51 +00:00
Chris Lattner
9ff7eb17e0 remove SelectionDAG::InsertISelMapEntry, it is dead 
llvm-svn: 29677
 2006-08-14 22:24:39 +00:00
Chris Lattner
fe1fd00ce8 Add code to resize the CSEMap hash table. This doesn't speedup codegen of 
kimwitu, but seems like a good idea from a "avoid performance cliffs" standpoint :)

llvm-svn: 29675
 2006-08-14 22:19:25 +00:00
Chris Lattner
a271f8f58c Remove 8 more std::map's. 
llvm-svn: 29631
 2006-08-11 21:55:30 +00:00
Chris Lattner
c3f78d1407 Start moving leaf nodes over to the CSEMap. 
llvm-svn: 29625
 2006-08-11 21:00:46 +00:00
Chris Lattner
3c504c013b eliminate the NullaryOps map, use CSEMap instead. 
llvm-svn: 29621
 2006-08-11 18:38:11 +00:00
Chris Lattner
d154649343 Change one ReplaceAllUsesWith method to take an array of operands to replaceinstead of a vector of operands. 
llvm-svn: 29617
 2006-08-11 17:46:44 +00:00
Chris Lattner
cc742c4155 Remove now-dead method. 
llvm-svn: 29615
 2006-08-11 17:40:26 +00:00
Chris Lattner
587718e305 remove a (now) unused getNode method. 
llvm-svn: 29613
 2006-08-11 17:25:05 +00:00
Chris Lattner
7b1362fa52 Start eliminating temporary vectors used to create DAG nodes. Instead, pass 
in the start of an array and a count of operands where applicable.  In many
cases, the number of operands is known, so this static array can be allocated
on the stack, avoiding the heap.  In many other cases, a SmallVector can be
used, which has the same benefit in the common cases.

I updated a lot of code calling getNode that takes a vector, but ran out of
time.  The rest of the code should be updated, and these methods should be
removed.

We should also do the same thing to eliminate the methods that take a
vector of MVT::ValueTypes.

It would be extra nice to convert the dagiselemitter to avoid creating vectors
for operands when calling getTargetNode.

llvm-svn: 29566
 2006-08-08 02:23:42 +00:00
Chris Lattner
be2fc7b875 Eliminate some malloc traffic by allocating vectors on the stack. Change some 
method that took std::vector<SDOperand> to take a pointer to a first operand
and #operands.

This speeds up isel on kc++ by about 3%.

llvm-svn: 29561
 2006-08-08 01:09:31 +00:00
Chris Lattner
1661ffa2eb Revamp the "CSEMap" datastructure used in the SelectionDAG class. This 
eliminates a bunch of std::map's in the SelectionDAG, replacing them with a
home-grown hashtable.

This is still a work in progress: not all the maps have been moved over and the
hashtable never resizes.  That said, this still speeds up llc 20% on kimwitu++
with -fast -regalloc=local using a release build.

llvm-svn: 29550
 2006-08-07 23:03:03 +00:00
Chris Lattner
154ffd3c8f Make SelectionDAG::RemoveDeadNodes iterative instead of recursive, which 
also make it simpler.

llvm-svn: 29524
 2006-08-04 17:45:20 +00:00
Evan Cheng
7bdbdf9ae7 AssignTopologicalOrder now returns the vector of SDNode* by reference to 
avoid the expensive operation of copying a vector.
It also returns a maximum id by value.

llvm-svn: 29478
 2006-08-02 21:58:44 +00:00
Evan Cheng
e4fdb294ae Added AssignTopologicalOrder() to assign each node an unique id based on their topological order. 
llvm-svn: 29431
 2006-08-01 08:20:41 +00:00
Evan Cheng
3b5f1c6248 Remove InFlightSet hack. No longer needed. 
llvm-svn: 29373
 2006-07-28 00:47:19 +00:00
Evan Cheng
bdb2562804 AssignNodeIds should return unsigned. 
llvm-svn: 29343
 2006-07-27 07:36:47 +00:00
Evan Cheng
a8e15977aa Remove NodeDepth; Add NodeId which is a unique id per node per DAG. It can only be set by SelectionDAG. 
llvm-svn: 29336
 2006-07-27 06:38:21 +00:00
Evan Cheng
90a25bcd6f Ugly hack! Add helper functions InsertInFlightSetEntry and 
RemoveInFlightSetEntry. They are used in place of direct set operators to
reduce instruction selection function stack size.

llvm-svn: 28987
 2006-06-29 23:57:05 +00:00
Nate Begeman
7ed816f900 JumpTable support! What this represents is working asm and jit support for 
x86 and ppc for 100% dense switch statements when relocations are non-PIC.
This support will be extended and enhanced in the coming days to support
PIC, and less dense forms of jump tables.

llvm-svn: 27947
 2006-04-22 18:53:45 +00:00
Evan Cheng
026fd6af96 Added an offset field to ConstantPoolSDNode. 
llvm-svn: 26371
 2006-02-25 09:54:52 +00:00
Chris Lattner
c3c99f3a18 add a new method 
llvm-svn: 26268
 2006-02-17 21:57:00 +00:00
Chris Lattner
2d35c6e90f Add a method 
llvm-svn: 26141
 2006-02-13 08:54:46 +00:00
Evan Cheng
7441e03b0b Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc 
problem where it inline the map insertion call too aggressively. Before this
change it was producing a frame size of 24k for Select_store(), now it's down
to 10k (by calling this method rather than calling the map insertion operator).

llvm-svn: 26094
 2006-02-09 22:11:03 +00:00
Evan Cheng
3486292b7d More changes to reduce frame size. 
Move all getTargetNode() out of SelectionDAG.h into SelectionDAG.cpp. This
prevents them from being inlined.
Change getTargetNode() so they return SDNode * instead of SDOperand to prevent
copying. It should also help compilation speed.

llvm-svn: 26083
 2006-02-09 07:15:23 +00:00
Evan Cheng
f115c17f23 Allow the specification of explicit alignments for constant pool entries. 
llvm-svn: 25855
 2006-01-31 22:23:14 +00:00
Evan Cheng
153b75f154 One more getTargetNode() variant shouldn't hurt... 
llvm-svn: 25816
 2006-01-30 07:47:47 +00:00
Chris Lattner
57b2492ecc Make ConstantFP legalize into TargetConstantFP like other leaf nodes do. Allow 
targets to register custom legalizers for ConstantFP in case there isn't a
fixed list of constants that can be generated.  On some architectures (ia64?)
all fp immediates are legal.

llvm-svn: 25769
 2006-01-29 06:24:40 +00:00
Chris Lattner
513942661a remove the getBR2Way_CC method 
llvm-svn: 25768
 2006-01-29 06:01:13 +00:00
Chris Lattner
9ecc961b8c add another variant 
llvm-svn: 25743
 2006-01-28 10:08:58 +00:00
Chris Lattner
1761a3e6bb Add some methods 
llvm-svn: 25741
 2006-01-28 09:32:01 +00:00
Chris Lattner
c9fb6af71c The 'target-independent' ISD::CALL isn't. Nuke it, making way for Nate's 
future work.

llvm-svn: 25720
 2006-01-28 00:18:27 +00:00
Nate Begeman
c29fac7fce First part of bug 680: 
Remove TLI.LowerVA* and replace it with SDNodes that are lowered the same
way as everything else.

llvm-svn: 25606
 2006-01-25 18:21:52 +00:00
Andrew Lenharth
35efa9c2d9 another couple selects 
llvm-svn: 25551
 2006-01-23 21:51:14 +00:00
Andrew Lenharth
28a8d211f6 another selectto 
llvm-svn: 25548
 2006-01-23 20:59:12 +00:00
Evan Cheng
3a7f44a3b6 Yet another getTargetNode() variant. I promise one of these days I'll fix 
tblgen so this is unnecessary.

llvm-svn: 25380
 2006-01-17 00:32:38 +00:00
Evan Cheng
7a32c047d9 New getNode() variants. 
llvm-svn: 25156
 2006-01-09 18:29:18 +00:00
Jim Laskey
61138e28ff Applied some recommend changes from sabre. The dominate one beginning "let the 
pass manager do it's thing."  Fixes crash when compiling -g files and suppresses
dwarf statements if no debug info is present.

llvm-svn: 25100
 2006-01-04 22:28:25 +00:00
Chris Lattner
0b240343df remove a dead node 
llvm-svn: 24966
 2005-12-22 21:16:35 +00:00
Duraid Madina
a83ab290ec i need to do this to take over the earth 
when I take over the earth, sabre will be happy because i'll stop asking
him silly questions!!!!!!

llvm-svn: 24949
 2005-12-22 07:02:51 +00:00
Chris Lattner
5d042179e6 Add an accessor 
llvm-svn: 24831
 2005-12-18 21:00:53 +00:00
Evan Cheng
be5a63c601 Yet another variant of getTargetNode(). 
llvm-svn: 24758
 2005-12-17 01:44:51 +00:00
Evan Cheng
0b7a482921 Added new getNode and getTargetNode variants for X86 stores. 
llvm-svn: 24653
 2005-12-10 00:37:58 +00:00
Evan Cheng
6610545b7e Added patterns for ADD8rm, etc. These fold load operands. e.g. addb 4(%esp), %al 
llvm-svn: 24648
 2005-12-09 22:48:48 +00:00
Evan Cheng
d11d31e0bd Added support for ComplexPattern. These are patterns that require C++ pattern 
matching code that is not currently auto-generated by tblgen, e.g. X86
addressing mode. Selection routines for complex patterns can return multiple operands, e.g. X86 addressing mode returns 4.

llvm-svn: 24634
 2005-12-08 02:00:36 +00:00
Evan Cheng
9c3508e1ab Teach tblgen to accept register source operands in patterns, e.g. 
def SHL8rCL  : I<0xD2, MRM4r, (ops R8 :$dst, R8 :$src),
                 "shl{b} {%cl, $dst|$dst, %CL}",
                 [(set R8:$dst, (shl R8:$src, CL))]>, Imp<[CL],[]>;

This generates a CopyToReg operand and added its 2nd result to the shl as
a flag operand.

llvm-svn: 24557
 2005-12-01 00:18:45 +00:00
Chris Lattner
7bed501258 Make SelectNodeTo return N 
llvm-svn: 24548
 2005-11-30 22:45:14 +00:00
Evan Cheng
08ab45044b Fixed a bug introduced by my last commit: TargetGlobalValues should key on 
GlobalValue * and index pair. Update getGlobalAddress() for symmetry.

llvm-svn: 24524
 2005-11-30 02:49:21 +00:00
Evan Cheng
025dab1137 Added an index field to GlobalAddressSDNode so it can represent X+12, etc. 
llvm-svn: 24523
 2005-11-30 02:04:11 +00:00