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354 Commits

Author SHA1 Message Date
Dale Johannesen
b52093236e Add APFloat interface to ConstantFPSDNode. Change 
over uses in DAGCombiner.  Fix interfaces to work
with APFloats.

llvm-svn: 41407
 2007-08-25 22:10:57 +00:00
Dale Johannesen
5c0b0ec1d6 Use APFloat internally for ConstantFPSDNode. 
llvm-svn: 41372
 2007-08-24 20:59:15 +00:00
Rafael Espindola
b20b9e985a propagate struct size and alignment of byval arguments to the DAG 
llvm-svn: 40986
 2007-08-10 14:44:42 +00:00
Evan Cheng
a06b9cf09f Do not emit copies for physical register output if it's not used. 
llvm-svn: 40722
 2007-08-02 05:29:38 +00:00
Duncan Sands
e8bb2c6d32 Support for trampolines, except for X86 codegen which is 
still under discussion.

llvm-svn: 40549
 2007-07-27 12:58:54 +00:00
Christopher Lamb
73c3cd47cc Add selection DAG nodes for subreg insert/extract. PR1350 
llvm-svn: 40516
 2007-07-26 07:34:40 +00:00
Anton Korobeynikov
5635277c36 Long live the exception handling! 
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.

llvm-svn: 39855
 2007-07-14 14:06:15 +00:00
Evan Cheng
23dc96f640 Move DenseMapKeyInfo<SDOperand> from LegalizeDAG.cpp to SelectionDAGNodes.h 
llvm-svn: 38484
 2007-07-10 06:59:55 +00:00
Dan Gohman
dd89857d45 Fix a comment so that the element numbering match the actual element 
operand numbering.

llvm-svn: 37944
 2007-07-06 13:27:33 +00:00
Rafael Espindola
7b3de98989 Add the byval attribute 
llvm-svn: 37940
 2007-07-06 10:57:03 +00:00
Dan Gohman
c6bdcfa8c0 Add new TargetLowering code to provide the final register type that an 
illegal value type will be transformed to, for code that needs the
register type after all transformations instead of just after the first
transformation.

Factor out the code that uses this information to do copy-from-regs and
copy-to-regs for various purposes into separate functions so that they
are done consistently.

llvm-svn: 37781
 2007-06-28 23:29:44 +00:00
Dan Gohman
354f02e03d Generalize MVT::ValueType and associated functions to be able to represent 
extended vector types. Remove the special SDNode opcodes used for pre-legalize
vector operations, and the special MVT::Vector type used with them. Adjust
lowering and legalize to work with the normal SDNode kinds instead, and to
use the normal MVT functions to work with vector types instead of using the
two special operands that the pre-legalize nodes held.

This allows pre-legalize and post-legalize DAGs, and the code that operates
on them, to be more consistent. Pre-legalize vector operators can be handled
more consistently with scalar operators. And, -view-dag-combine1-dags and
-view-legalize-dags now look prettier for vector code.

llvm-svn: 37719
 2007-06-25 16:23:39 +00:00
Dan Gohman
6415b2548e Introduce new SelectionDAG node opcodes VEXTRACT_SUBVECTOR and 
VCONCAT_VECTORS. Use these for CopyToReg and CopyFromReg legalizing in
the case that the full register is to be split into subvectors instead
of scalars. This replaces uses of VBIT_CONVERT to present values as
vector-of-vector types in order to make whole subvectors accessible via
BUILD_VECTOR and EXTRACT_VECTOR_ELT.

This is in preparation for adding extended ValueType values, where
having vector-of-vector types is undesirable.

llvm-svn: 37569
 2007-06-13 15:12:02 +00:00
Dan Gohman
2c5d31ee81 Minor comment cleanups. 
llvm-svn: 37321
 2007-05-24 14:36:04 +00:00
Dan Gohman
b0fd1c9640 Correct a comment. 
llvm-svn: 37058
 2007-05-15 00:20:13 +00:00
Christopher Lamb
a157874a8a PR400 phase 2. Propagate attributed load/store information through DAGs. 
llvm-svn: 36356
 2007-04-22 23:15:30 +00:00
Lauro Ramos Venancio
3b60b9546e X86 TLS: Implement review feedback. 
llvm-svn: 36318
 2007-04-21 20:56:26 +00:00
Reid Spencer
81070d52da Revert Christopher Lamb's load/store alignment changes. 
llvm-svn: 36309
 2007-04-21 18:36:27 +00:00
Christopher Lamb
b56b6a7ad7 add support for alignment attributes on load/store instructions 
llvm-svn: 36301
 2007-04-21 08:16:25 +00:00
Lauro Ramos Venancio
bc32d90b46 Implement "general dynamic", "initial exec" and "local exec" TLS models for 
X86 32 bits.

llvm-svn: 36283
 2007-04-20 21:38:10 +00:00
Anton Korobeynikov
9bc4b792bf Implemented correct stack probing on mingw/cygwin for dynamic alloca's. 
Also, fixed static case in presence of eax livin. This fixes PR331

PS: Why don't we still have push/pop instructions? :)
llvm-svn: 36195
 2007-04-17 09:20:00 +00:00
Reid Spencer
5ac41f7bc9 For PR1297: 
Intrinsic functions might need to be generated (if they are overloaded) so
returning a const char* is no longer possible. Change getOperationName to
return a std::string instead.

llvm-svn: 35543
 2007-04-01 07:28:37 +00:00
Dan Gohman
42a3f4e16e Add the 'explicit' keyword to several constructors that accept one 
argument that don't appear intended as implicit-conversion operators.

llvm-svn: 35280
 2007-03-23 18:44:11 +00:00
Anton Korobeynikov
85d6c1ebad Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.

llvm-svn: 35008
 2007-03-07 16:25:09 +00:00
Evan Cheng
d4fb00bb6b Add a utility function to test whether a load is unindexed. 
llvm-svn: 35004
 2007-03-07 08:04:41 +00:00
Chris Lattner
295b3d69b1 add a new node 
llvm-svn: 34912
 2007-03-04 20:40:06 +00:00
Jim Laskey
013a72ffd4 Add new instructions for handling data passed into eh landing pad. 
llvm-svn: 34472
 2007-02-21 22:37:22 +00:00
Reid Spencer
e7ff3305d6 For PR1195: 
Change use of "packed" term to "vector" in comments, strings, variable
names, etc.

llvm-svn: 34300
 2007-02-15 03:39:18 +00:00
Lauro Ramos Venancio
0471446487 Add comment about original function argument alignment. 
llvm-svn: 34243
 2007-02-13 17:57:38 +00:00
Chris Lattner
59d7c680b5 Introduce new UnarySDNode/BinarySDNode/TernarySDNode nodes, which coallocate 
their operands with the node itself.  This reduces malloc traffic for operand
lists.  This reduces isel time on kc++ from 2.6164 to 2.5570s, about 2.3%.

llvm-svn: 33878
 2007-02-04 08:35:21 +00:00
Chris Lattner
22db3d9fca Add a new SDNode ctor and InitOperands method. This allows the operands for 
an SDNode to be allocated as part of the node itself, instead of being a
separate new[]'d object.  Switch HandleSDNode, LoadSDNode, and StoreSDNode
to use this mechanism.  This saves one heap allocation and free for each node
of this type that is allocated.  This reduces isel time from 2.7638 to 2.6164s
on kc++, which is a 5.6% speedup.

llvm-svn: 33877
 2007-02-04 08:13:53 +00:00
Chris Lattner
dcdf1edd93 eliminate the SDNode::setValueTypes method. 
llvm-svn: 33876
 2007-02-04 07:37:24 +00:00
Chris Lattner
2b6734a983 eliminate a bunch of duplicate ctors and helper functions. 
llvm-svn: 33875
 2007-02-04 07:28:00 +00:00
Chris Lattner
8bbd45cd6e move MorphNode to out of line and merge setNodeOperands into it. There is 
no behavior or performance change here.

llvm-svn: 33869
 2007-02-04 02:49:29 +00:00
Chris Lattner
ccd1f36346 simplify MorphNodeTo to take a VTList operand. 
llvm-svn: 33868
 2007-02-04 02:41:42 +00:00
Chris Lattner
7e8b8e7a68 eliminate some extraneous methods in SDNode 
llvm-svn: 33867
 2007-02-04 02:32:44 +00:00
Chris Lattner
f3b4a0cc95 Give each selectiondag node class a home for it's vtable and rtti info 
llvm-svn: 33866
 2007-02-04 02:23:32 +00:00
Nate Begeman
dc46021355 Finish off bug 680, allowing targets to custom lower frame and return 
address nodes.

llvm-svn: 33636
 2007-01-29 22:58:52 +00:00
Anton Korobeynikov
611d5e2eda Propagate changes from my local tree. This patch includes: 
1. New parameter attribute called 'inreg'. It has meaning "place this
parameter in registers, if possible". This is some generalization of
gcc's regparm(n) attribute. It's currently used only in X86-32 backend.
2. Completely rewritten CC handling/lowering code inside X86 backend.
Merged stdcall + c CCs and fastcall + fast CC.
3. Dropped CSRET CC. We cannot add struct return variant for each
target-specific CC (e.g. stdcall + csretcc and so on).
4. Instead of CSRET CC introduced 'sret' parameter attribute. Setting in
on first attribute has meaning 'This is hidden pointer to structure
return. Handle it gently'.
5. Fixed small bug in llvm-extract + add new feature to
FunctionExtraction pass, which relinks all internal-linkaged callees
from deleted function to external linkage. This will allow further
linking everything together.

NOTEs: 1. Documentation will be updated soon.
       2. llvm-upgrade should be improved to translate csret => sret.
          Before this, there will be some unexpected test fails.
llvm-svn: 33597
 2007-01-28 13:31:35 +00:00
Jim Laskey
64f4242072 Change the MachineDebugInfo to MachineModuleInfo to better reflect usage 
for debugging and exception handling.

llvm-svn: 33550
 2007-01-26 21:22:28 +00:00
Jim Laskey
23ed7d2625 Make LABEL a builtin opcode. 
llvm-svn: 33537
 2007-01-26 14:34:52 +00:00
Evan Cheng
70700ba459 Typo. 
llvm-svn: 32628
 2006-12-16 06:21:55 +00:00
Evan Cheng
89ee587963 Rename ISD::MemOpAddrMode to ISD::MemIndexedMode 
llvm-svn: 31595
 2006-11-09 17:55:04 +00:00
Evan Cheng
047a33d3e3 Fix comments. 
llvm-svn: 31414
 2006-11-03 07:31:32 +00:00
Evan Cheng
b19289a84d Add isPredecessor to check whether a node is another's predecessor. 
llvm-svn: 31406
 2006-11-03 03:02:18 +00:00
Evan Cheng
7437ed9f30 Added a new SDNode type: BR_JT for jumptable branch. 
llvm-svn: 31292
 2006-10-30 07:59:36 +00:00
Jim Laskey
f5452dfa52 Editorial clean up. 
llvm-svn: 31250
 2006-10-28 01:34:21 +00:00
Jim Laskey
ef56bc9680 Switch over from SelectionNodeCSEMap to FoldingSet. 
llvm-svn: 31240
 2006-10-27 23:46:08 +00:00
Evan Cheng
d2d6b83b83 Indexed load / store changes. 
llvm-svn: 31208
 2006-10-26 21:52:24 +00:00
Evan Cheng
582d22a821 Split PRE_INDEXED to PRE_INC / PRE_DEC and similarly for POST_INDEXED. 
llvm-svn: 31015
 2006-10-17 21:12:56 +00:00
Evan Cheng
fe5bb5dbe6 Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode. 
llvm-svn: 30945
 2006-10-13 21:14:26 +00:00
Evan Cheng
9b31a4d4ed Naming consistency. 
llvm-svn: 30878
 2006-10-11 07:10:22 +00:00
Andrew Lenharth
4b783303e5 Jimptables working again on alpha. 
As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.

llvm-svn: 30873
 2006-10-11 04:29:42 +00:00
Evan Cheng
8090a67f40 Comments; getChain(), getBasePtr(), etc. should return a SDOperand by value. 
llvm-svn: 30850
 2006-10-10 01:44:58 +00:00
Evan Cheng
967d6af1d2 Merging ISD::LOAD and ISD::LOADX. Added LoadSDNode to represent load nodes. 
Chain and address ptr remains as operands. SrcValue, extending mode, extending
VT (or rather loaded VT before extension) are now instance variables of
LoadSDNode.

Introduce load / store addressing modes to represent pre- and post-indexed
load and store. Also added an additional operand offset that is only used in
post-indexed mode (i.e. base ptr += offset after load/store).

Added alignment info (not yet used) and isVolatile fields.

llvm-svn: 30843
 2006-10-09 20:55:20 +00:00
Evan Cheng
494e8e6971 Combine ISD::EXTLOAD, ISD::SEXTLOAD, ISD::ZEXTLOAD into ISD::LOADX. Add an 
extra operand to LOADX to specify the exact value extension type.

llvm-svn: 30714
 2006-10-04 00:56:09 +00:00
Andrew Lenharth
58f5a24f0c Add support for other relocation bases to jump tables, as well as custom asm directives 
llvm-svn: 30593
 2006-09-24 19:45:58 +00:00
Evan Cheng
b25fd42e43 The top bit is used to determine whether it's a MachineConstantPoolValue. 
llvm-svn: 30324
 2006-09-14 07:30:48 +00:00
Evan Cheng
499d77553a Added support for machine specific constantpool values. These are useful for 
representing expressions that can only be resolved at link time, etc.

llvm-svn: 30278
 2006-09-12 21:00:35 +00:00
Chris Lattner
7005757ced Implement new fpowi node 
llvm-svn: 30223
 2006-09-09 05:55:44 +00:00
Evan Cheng
6e08e7035f Eliminate SelectNodeTo() and getTargetNode() variants which take more than 
3 SDOperand operands. They are replaced by versions which take an array
of SDOperand and the number of operands.

llvm-svn: 29905
 2006-08-27 08:08:54 +00:00
Chris Lattner
c1654416d6 Change the use_list to be a smallvector instead of a vector. This reduces 
isel time from 6.79s to 5.53s (22%) on kc++ with a release build on ppc.
Go smallvector! :)

llvm-svn: 29731
 2006-08-16 21:01:10 +00:00
Chris Lattner
cb3adb8225 Start using SDVTList more consistently 
llvm-svn: 29711
 2006-08-15 19:11:05 +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
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
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
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
Chris Lattner
3415e20ae6 Add an out-of-line virtual method for the sdnode class to give it a home. 
llvm-svn: 29192
 2006-07-19 00:00:37 +00:00
Chris Lattner
990b00b325 Add a new sentry node type, allowing assertions to catch trivial 
use-after-deleted errors.

llvm-svn: 28513
 2006-05-27 00:40:15 +00:00
Evan Cheng
f53c4cc192 Change RET node to include signness information of the return values. e.g. 
RET chain, value1, sign1, value2, sign2

llvm-svn: 28509
 2006-05-26 23:09:09 +00:00
Evan Cheng
5d83c6ad6a CALL node change: now containing signness of each argument. 
llvm-svn: 28460
 2006-05-25 00:54:33 +00:00
Chris Lattner
5d949a2ad2 Add a new CALL node. 
llvm-svn: 28337
 2006-05-16 22:52:27 +00:00
Chris Lattner
f88654d468 Add a chain to FORMAL_ARGUMENTS. 
llvm-svn: 28319
 2006-05-16 06:43:59 +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
Reid Spencer
553050adcb Make sure both member variables are initialized in the default constructor 
for SDOperand. This gets rid of numerous warnings in lib/CodeGen and
lib/Target when compiled with GCC 4.0.2

llvm-svn: 27607
 2006-04-12 16:44:15 +00:00
Chris Lattner
bf69078515 new dag node 
llvm-svn: 27596
 2006-04-11 21:30:42 +00:00
Chris Lattner
a4a7e59c52 Add a new VSELECT node. 
llvm-svn: 27541
 2006-04-08 22:16:01 +00:00
Chris Lattner
99a3213376 simplify this method 
llvm-svn: 27338
 2006-04-02 02:28:52 +00:00
Chris Lattner
83ec289ebf Add a new node 
llvm-svn: 27230
 2006-03-28 19:54:11 +00:00
Chris Lattner
a0f80c3c3f Tblgen doesn't like multiple SDNode<> definitions that map to the same 
enum value.  Split them into separate enums.

llvm-svn: 27199
 2006-03-28 00:39:06 +00:00
Evan Cheng
4667bd17cb Change isBuildVectorAllOnesInteger to isBuildVectorAllOnes. Also check for 
floating point cases.

llvm-svn: 27165
 2006-03-27 06:58:47 +00:00
Evan Cheng
ef3b33b847 Add ISD::isBuildVectorAllZeros predicate 
llvm-svn: 27147
 2006-03-26 09:50:58 +00:00
Chris Lattner
91fe1d4b55 Add a predicate 
llvm-svn: 27129
 2006-03-25 22:56:35 +00:00
Chris Lattner
7c4160da23 add a new intrinsic node 
llvm-svn: 27019
 2006-03-24 01:03:55 +00:00
Chris Lattner
d4f04c4b6a Fix comments 
llvm-svn: 26960
 2006-03-22 20:09:04 +00:00
Chris Lattner
b1bc1f88c0 add a new node 
llvm-svn: 26958
 2006-03-22 19:56:46 +00:00
Chris Lattner
9f8cfe5ab4 add some nodes for extractelement 
llvm-svn: 26927
 2006-03-21 20:43:08 +00:00
Chris Lattner
0b7ec34646 add a node 
llvm-svn: 26879
 2006-03-19 23:42:51 +00:00
Chris Lattner
bbbf21b37b improve comments, add a new MVT::getVectorBaseType method. 
llvm-svn: 26855
 2006-03-19 05:26:45 +00:00
Chris Lattner
868679006d Rename ConstantVec -> BUILD_VECTOR and VConstant -> VBUILD_VECTOR. Allow 
*BUILD_VECTOR to take variable inputs.

llvm-svn: 26846
 2006-03-19 00:52:25 +00:00
Chris Lattner
25feee0be9 Update comments. 
llvm-svn: 26839
 2006-03-18 01:43:28 +00:00
Chris Lattner
da6506a1f2 add a couple of enum values 
llvm-svn: 26829
 2006-03-17 19:53:41 +00:00
Nate Begeman
42736d46b2 Remove BRTWOWAY* 
Make the PPC backend not dependent on BRTWOWAY_CC and make the branch
selector smarter about the code it generates, fixing a case in the
readme.

llvm-svn: 26814
 2006-03-17 01:40:33 +00:00
Chris Lattner
9f589d65a1 Add a copysign node 
llvm-svn: 26540
 2006-03-05 05:06:40 +00:00
Evan Cheng
4afe769361 Add more vector NodeTypes: VSDIV, VUDIV, VAND, VOR, and VXOR. 
llvm-svn: 26504
 2006-03-03 07:01:07 +00:00
Evan Cheng
4ddc3b2c54 SDOperand::isOperand should not be a forwarding. It must check *this against N's operands. 
llvm-svn: 26502
 2006-03-03 06:42:32 +00:00
Evan Cheng
183b913508 Added isOperand(N): true if this is an operand of N 
llvm-svn: 26501
 2006-03-03 06:24:54 +00:00
Chris Lattner
999aa36a04 remove the read/write port/io intrinsics. 
llvm-svn: 26479
 2006-03-03 00:19:58 +00:00
Evan Cheng
2cbf9d93d3 - Added VConstant as an abstract version of ConstantVec. 
- All abstrct vector nodes must have # of elements and element type as their
first two operands.

llvm-svn: 26432
 2006-03-01 00:51:13 +00:00
Evan Cheng
026fd6af96 Added an offset field to ConstantPoolSDNode. 
llvm-svn: 26371
 2006-02-25 09:54:52 +00:00
Chris Lattner
ed45ad33b7 Make the LLVM headers "-ansi -pedantic -Wno-long-long" clean. 
Patch by Martin Partel!

llvm-svn: 26313
 2006-02-22 16:23:43 +00:00
Nate Begeman
9c0ab71f4a kill ADD_PARTS & SUB_PARTS and replace them with fancy new ADDC, ADDE, SUBC 
and SUBE nodes that actually expose what's going on and allow for
significant simplifications in the targets.

llvm-svn: 26255
 2006-02-17 05:43:56 +00:00
Chris Lattner
70865ea43f Add a comment: value is log2 
llvm-svn: 26068
 2006-02-09 02:10:15 +00:00
Evan Cheng
d46a7fc65a * Added SDNode::isOnlyUse(). 
* Fix hasNUsesOfValue(), it should be const.

llvm-svn: 25990
 2006-02-05 06:29:23 +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
Chris Lattner
9cb1135f52 remove some methods 
llvm-svn: 25779
 2006-01-29 07:57:11 +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
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
Chris Lattner
6980ff5179 Add new INLINEASM node 
llvm-svn: 25663
 2006-01-26 22:23:45 +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
Chris Lattner
1c40cfd488 add a method 
llvm-svn: 25581
 2006-01-24 05:47:05 +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
Chris Lattner
fac137d4bd add stacksave/stackrestore nodes 
llvm-svn: 25270
 2006-01-13 02:39:42 +00:00
Nate Begeman
cff96008ac Add bswap, rotl, and rotr nodes 
Add dag combiner code to recognize rotl, rotr
Add ppc code to match rotl

Targets should add rotl/rotr patterns if they have them

llvm-svn: 25222
 2006-01-11 21:21:00 +00:00
Jim Laskey
b5b63a11df Grammer correction. 
llvm-svn: 25106
 2006-01-05 01:53:28 +00:00
Jim Laskey
5eddaee9f3 Added initial support for DEBUG_LABEL allowing debug specific labels to be 
inserted in the code.

llvm-svn: 25104
 2006-01-05 01:25:28 +00:00
Jim Laskey
897ad8ddb7 Add unique id to debug location for debug label use (work in progress.) 
llvm-svn: 25096
 2006-01-04 15:04:11 +00:00
Chris Lattner
1d16f29ca7 improve comment: mention vectors 
llvm-svn: 24971
 2005-12-23 00:46:10 +00:00
Chris Lattner
77ebc833c1 add a new node 
llvm-svn: 24969
 2005-12-23 00:15:59 +00:00
Chris Lattner
0b240343df remove a dead node 
llvm-svn: 24966
 2005-12-22 21:16:35 +00:00
Jim Laskey
37957b1ad3 Added source file/line correspondence for dwarf (PowerPC only at this point.) 
llvm-svn: 24748
 2005-12-16 22:45:29 +00:00
Nate Begeman
6c1b8712c5 Teach the SelectionDAG ISel how to turn ConstantPacked values into 
constant nodes with vector types.  Also teach the asm printer how to print
ConstantPacked constant pool entries.  This allows us to generate altivec
code such as the following, which adds a vector constantto a packed float.

LCPI1_0:  <4 x float> < float 0.0e+0, float 0.0e+0, float 0.0e+0, float 1.0e+0 >
        .space  4
        .space  4
        .space  4
        .long   1065353216      ; float 1
        .text
        .align  4
        .globl  _foo
_foo:
        lis r2, ha16(LCPI1_0)
        la r2, lo16(LCPI1_0)(r2)
        li r4, 0
        lvx v0, r4, r2
        lvx v1, r4, r3
        vaddfp v0, v1, v0
        stvx v0, r4, r3
        blr

For the llvm code:

void %foo(<4 x float> * %a) {
entry:
  %tmp1 = load <4 x float> * %a;
  %tmp2 = add <4 x float> %tmp1, < float 0.0, float 0.0, float 0.0, float 1.0 >
  store <4 x float> %tmp2, <4 x float> *%a
  ret void
}

llvm-svn: 24616
 2005-12-06 06:18:55 +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
Chris Lattner
f9ea6dbf66 Add support for a new STRING and LOCATION node for line number support, patch 
contributed by Daniel Berlin, with a few cleanups here and there by me.

llvm-svn: 24512
 2005-11-29 06:15:39 +00:00
Nate Begeman
a90bb6d9b1 Check in code to scalarize arbitrarily wide packed types for some simple 
vector operations (load, add, sub, mul).

This allows us to codegen:
void %foo(<4 x float> * %a) {
entry:
  %tmp1 = load <4 x float> * %a;
  %tmp2 = add <4 x float> %tmp1, %tmp1
  store <4 x float> %tmp2, <4 x float> *%a
  ret void
}

on ppc as:
_foo:
        lfs f0, 12(r3)
        lfs f1, 8(r3)
        lfs f2, 4(r3)
        lfs f3, 0(r3)
        fadds f0, f0, f0
        fadds f1, f1, f1
        fadds f2, f2, f2
        fadds f3, f3, f3
        stfs f0, 12(r3)
        stfs f1, 8(r3)
        stfs f2, 4(r3)
        stfs f3, 0(r3)
        blr

llvm-svn: 24484
 2005-11-22 18:16:00 +00:00
Chris Lattner
f6ae8401db add a new node type 
llvm-svn: 24436
 2005-11-20 22:55:57 +00:00
Nate Begeman
7d513f65ae Teach LLVM how to scalarize packed types. Currently, this only works on 
packed types with an element count of 1, although more generic support is
coming.  This allows LLVM to turn the following code:

void %foo(<1 x float> * %a) {
entry:
  %tmp1 = load <1 x float> * %a;
  %tmp2 = add <1 x float> %tmp1, %tmp1
  store <1 x float> %tmp2, <1 x float> *%a
  ret void
}

Into:

_foo:
        lfs f0, 0(r3)
        fadds f0, f0, f0
        stfs f0, 0(r3)
        blr

llvm-svn: 24416
 2005-11-19 00:36:38 +00:00
Andrew Lenharth
9b036b1bdb added a chain output 
llvm-svn: 24306
 2005-11-11 22:48:54 +00:00
Andrew Lenharth
6600f4a1d0 Add support for a cycle counter intrinsic. As basically all processors have 
this and have it in about the same form, I think this makes sense.
on X86, you do a RDTSC (64bit result, from any ring since the P5MMX)
on Alpha, you do a RDCC
on PPC, there is a sequence which may or may not work depending on how things
are setup by the OS.  Or something like that.  Maybe someone who knows PPC
can add support.  Something about the time base register.
on Sparc, you read %tick, which in some solaris versions (>=8) is readable by
userspace
on IA64 read ar.itc

So I think the ulong is justified since all of those are 64bit.
Support is slighly flaky on old chips (P5 and lower) and sometimes
depends on OS (PPC, Sparc).  But for modern OS/Hardware (aka this decade),
we should be ok.

I am still not sure what to do about lowering.  I can either see a lower to 0, to
gettimeofday (or the target os equivalent), or loudly complaining and refusing to
continue.

I am commiting an Alpha implementation.  I will add the X86 implementation if I
have to (I have use of it in the near future), but if someone who knows that
backend (and the funky multi-register results) better wants to add it, it would
take them a lot less time ;)

TODO: better lowering and legalizing, and support more platforms
llvm-svn: 24299
 2005-11-11 16:45:18 +00:00
Chris Lattner
ce6f7839fe Switch the allnodes list from a vector of pointers to an ilist of nodes. 
This eliminates the vector, allows constant time removal of a node from
a graph, and makes iteration over the all nodes list stable when adding
nodes to the graph.

llvm-svn: 24262
 2005-11-09 23:46:43 +00:00
Chris Lattner
e1cf681dee Change the ValueList array for each node to be shared instead of individually 
allocated.  Further, in the common case where a node has a single value, just
reference an element from a small array.  This is a small compile-time wi.

llvm-svn: 24250
 2005-11-08 23:30:11 +00:00
Chris Lattner
12686ba20f Switch the operandlist/valuelist from being vectors to being just an array. 
This saves 12 bytes from SDNode, but doesn't speed things up substantially
(our graphs apparently already fit within the cache on my g5).  In any case
this reduces memory usage.

llvm-svn: 24248
 2005-11-08 22:06:23 +00:00
Andrew Lenharth
9fad56d2d2 add TargetExternalSymbol 
llvm-svn: 23886
 2005-10-23 03:40:17 +00:00
Chris Lattner
bc5ae03dea add a helper class 
llvm-svn: 23633
 2005-10-05 06:34:34 +00:00
Chris Lattner
9a2fb006e4 Add FP versions of the binary operators, keeping the int and fp worlds seperate. 
llvm-svn: 23506
 2005-09-28 22:29:58 +00:00
Chris Lattner
a0ac88861d Add a new ANY_EXTEND node, which operates like an extension but has undefined 
top bits.

llvm-svn: 23200
 2005-09-02 00:14:40 +00:00
Nate Begeman
f279937fd9 Add AssertSext, AssertZext nodes for targets that pass arguments in 
registers, and the incoming values have already been zero or sign extended
from the appopriate type to the register width.

llvm-svn: 23146
 2005-08-30 02:39:32 +00:00
Chris Lattner
1a17dba9d1 improve comment 
llvm-svn: 23134
 2005-08-29 22:48:32 +00:00
Reid Spencer
71966308fc Fix a typo. 
llvm-svn: 23117
 2005-08-27 19:06:05 +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
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
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
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
Nate Begeman
50efb750b6 Add two new methods isTargetOpcode() which returns true if the node type 
is greater than the range of building selection dag node types, and
getTargetOpcode(), which returns the node opcode less the value of
isd::builtin_op_end, which specifies the end of the builtin types.

llvm-svn: 22844
 2005-08-17 23:44:54 +00:00
Jim Laskey
d761e8859d Move the code dependency for MathExtras.h from SelectionDAGNodes.h. 
Added some class dividers in SelectionDAG.cpp.

llvm-svn: 22841
 2005-08-17 20:08:02 +00:00
Jim Laskey
61e3d7bca5 Culling out use of unions for converting FP to bits and vice versa. 
llvm-svn: 22838
 2005-08-17 19:34:49 +00:00
Chris Lattner
1e93590d9f Make removeUser more efficient, add a matching addUser. 
Fix the setOperands methods I added to update use/def information correctly.

llvm-svn: 22832
 2005-08-17 18:58:38 +00:00
Chris Lattner
dd99fbadb7 make sure to remove a node from the use list of its operands when we replace 
it.

llvm-svn: 22820
 2005-08-17 01:54:00 +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
c93a92c951 allow passing a dag into getOperationName and dump 
llvm-svn: 22803
 2005-08-16 18:32:18 +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
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
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
Jeff Cohen
81980781a1 Eliminate tabs and trailing spaces. 
llvm-svn: 22520
 2005-07-27 05:53:44 +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
3afe2d8d83 add accessors 
llvm-svn: 22007
 2005-05-14 06:19:11 +00:00
Chris Lattner
97505aa9ac add TAILCALL node 
llvm-svn: 21956
 2005-05-13 18:40:17 +00:00
Chris Lattner
094bbfcebb rename the ADJCALLSTACKDOWN/ADJCALLSTACKUP nodes to be CALLSEQ_START/BEGIN. 
llvm-svn: 21915
 2005-05-12 23:24:06 +00:00
Chris Lattner
328273326d new method 
llvm-svn: 21869
 2005-05-11 18:56:45 +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
Chris Lattner
4678a790e6 Add FSQRT, FSIN, FCOS nodes, patch contributed by Morten Ofstad 
llvm-svn: 21605
 2005-04-28 21:44:03 +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
f5fe51581b Remove the ZERO_EXTEND_INREG node which is redundant with AND 
llvm-svn: 21263
 2005-04-13 02:36:41 +00:00
Chris Lattner
b0e6e4b693 Add a new node 
llvm-svn: 21162
 2005-04-09 03:21:50 +00:00
Chris Lattner
6c466448d3 fix this method for 64-bit constants 
llvm-svn: 21158
 2005-04-08 21:31:29 +00:00
Chris Lattner
4201b81130 document these nodes, as they are nonobvious 
llvm-svn: 21108
 2005-04-06 04:21:29 +00:00
Nate Begeman
12af81407b Add MULHU and MULHS nodes for the high part of an (un)signed 32x32=64b 
multiply.

llvm-svn: 21102
 2005-04-05 22:36:56 +00:00
Chris Lattner
e74fa510c9 Add two happy new nodes for FABS and FNEG 
llvm-svn: 21007
 2005-04-02 04:58:28 +00:00
Chris Lattner
92920b74a0 fix a comment 
llvm-svn: 21003
 2005-04-02 03:59:45 +00:00
Chris Lattner
37abadec02 add some new nodes. 
llvm-svn: 21000
 2005-04-02 03:30:33 +00:00
Nate Begeman
4034852ba9 Add ISD::UNDEF node 
Teach the SelectionDAG code how to expand and promote it
Have PPC32 LowerCallTo generate ISD::UNDEF for int arg regs used up by fp
  arguments, but not shadowing their value.  This allows us to do the right
  thing with both fixed and vararg floating point arguments.

llvm-svn: 20988
 2005-04-01 22:34:39 +00:00
Misha Brukman
b5dc9aae6c Fix spelling of `corresponds' 
llvm-svn: 20966
 2005-03-31 21:30:35 +00:00
Andrew Lenharth
7db3834ecf PCMarker support for DAG and Alpha 
llvm-svn: 20965
 2005-03-31 21:24:06 +00:00
Chris Lattner
9ee3bbc844 Keep track of node depth for each node 
llvm-svn: 19732
 2005-01-21 21:39:38 +00:00
Chris Lattner
8e17ad37f2 Eliminate the unimplemented ADDC/SUBB operations, add ADD_PARTS/SUB_PARTS instead. 
llvm-svn: 19713
 2005-01-20 18:50:39 +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
783a9d8893 Add methods 
llvm-svn: 19627
 2005-01-17 02:24:59 +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
Chris Lattner
c73bf62770 Start adding some new operators, give IMPLICIT_DEF a chain operand. 
llvm-svn: 19558
 2005-01-14 22:07:46 +00:00
Chris Lattner
c6f23adb2a Add a method 
llvm-svn: 19538
 2005-01-13 22:58:50 +00:00
Chris Lattner
7a8788c9ac Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode. 
llvm-svn: 19535
 2005-01-13 20:50:02 +00:00
Chris Lattner
000509e7b0 Add a new node type, add comments. 
llvm-svn: 19525
 2005-01-13 17:58:35 +00:00
Chris Lattner
92c07c0dba New method. 
llvm-svn: 19516
 2005-01-12 18:37:33 +00:00
Chris Lattner
f01a5206ea Update comments to indicate CopyFrom/ToReg take physregs as well as vregs. 
llvm-svn: 19514
 2005-01-12 18:11:36 +00:00
Chris Lattner
1b9caa4504 Add MEMSET/MEMCPY/MEMMOVE operations. Fix a really bad bug in the vector 
SDNode ctor.

llvm-svn: 19462
 2005-01-11 05:56:17 +00:00
Chris Lattner
9ed0d66c8a Add a helper method. 
llvm-svn: 19442
 2005-01-10 23:25:04 +00:00
Chris Lattner
a4f7c88eb6 Add support for graph operations, and add a viewGraph method to SelectionDAG. 
llvm-svn: 19440
 2005-01-10 23:05:53 +00:00
Chris Lattner
a58b3f48ef Silence VS warnings. 
llvm-svn: 19384
 2005-01-08 19:52:31 +00:00
Chris Lattner
e4cd40b379 Add operators for FP -> INT conversions and back. 
llvm-svn: 19368
 2005-01-08 08:08:49 +00:00