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1686 Commits

Author SHA1 Message Date
Dan Gohman
4f288e3298 Add a new method to SDNode/SDOperand named getValueSizeInBits 
that combines getValueType and MVT::getSizeInBits, since this
occurrs frequently.

llvm-svn: 47552
 2008-02-25 19:08:02 +00:00
Evan Cheng
fc540545f1 Correctly determine whether a argument load can be folded into its uses. 
llvm-svn: 47545
 2008-02-25 08:50:41 +00:00
Evan Cheng
676068324b Forgot this. 
llvm-svn: 47510
 2008-02-23 00:46:11 +00:00
Evan Cheng
fa73e0c64e Enable re-materialization of instructions which have virtual register operands if 
the definition of the operand also reaches its uses.

llvm-svn: 47475
 2008-02-22 09:24:50 +00:00
Chris Lattner
7d3c05df5b minor cleanups to LSBaseSDNode. 
llvm-svn: 47469
 2008-02-22 01:54:35 +00:00
Andrew Lenharth
b8f9871711 Better names as per Evan's request 
llvm-svn: 47435
 2008-02-21 16:11:38 +00:00
Andrew Lenharth
db9cd46f5d Atomic op support. If any gcc test uses __sync builtins, it might start failing on archs that haven't implemented them yet 
llvm-svn: 47430
 2008-02-21 06:45:13 +00:00
Anton Korobeynikov
0c5e186924 Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings. 
llvm-svn: 47367
 2008-02-20 11:08:44 +00:00
Bill Wendling
becea18656 Fixed typo. 
llvm-svn: 47365
 2008-02-20 09:14:09 +00:00
Bill Wendling
9a2a1ddf6e More constification of things. More comments added. No functionality 
changes. (Sorry for any formatting changes that creeped in.)

llvm-svn: 47362
 2008-02-20 07:36:31 +00:00
Evan Cheng
bb577266bf - When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type. 
- X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC.

llvm-svn: 47290
 2008-02-18 23:04:32 +00:00
Roman Levenstein
a7d4ae1435 New helper function getMBBFromIndex() that given an index in any instruction of an MBB returns a pointer the MBB. Reviewed by Evan. 
llvm-svn: 47267
 2008-02-18 09:35:30 +00:00
Andrew Lenharth
c178981b85 llvm.memory.barrier, and impl for x86 and alpha 
llvm-svn: 47204
 2008-02-16 01:24:58 +00:00
Dan Gohman
a9386d8501 Rename CountMemOperands to ComputeMemOperandsEnd to reflect what 
it actually does. Simplify CountOperands a little by reusing
ComputeMemOperandsEnd. And reword some comments for both.

llvm-svn: 47198
 2008-02-16 00:36:48 +00:00
Evan Cheng
bb357cd8a6 - Removing the infamous r2rMap_ and rep() method. Now the coalescer will update 
register defs and uses after each successful coalescing.
- Also removed a number of hacks and fixed some subtle kill information bugs.

llvm-svn: 47167
 2008-02-15 18:24:29 +00:00
Dan Gohman
e34f24132b Change MemOperand's size and offset to be 64-bit. 
llvm-svn: 47151
 2008-02-15 01:29:57 +00:00
Nate Begeman
1ef1013b6c Change how FP immediates are handled. 
1) ConstantFP is now expand by default
2) ConstantFP is not turned into TargetConstantFP during Legalize
   if it is legal.

This allows ConstantFP to be handled like Constant, allowing for 
targets that can encode FP immediates as MachineOperands.

As a bonus, fix up Itanium FP constants, which now correctly match,
and match more constants!  Hooray.

llvm-svn: 47121
 2008-02-14 08:57:00 +00:00
Nate Begeman
8352abdd98 Support a new type of MachineOperand, MO_FPImmediate, used for holding 
FP Immediates, crazily enough

llvm-svn: 47117
 2008-02-14 07:39:30 +00:00
Nate Begeman
929fd03fbe Nuke dead comment 
llvm-svn: 47114
 2008-02-14 07:23:11 +00:00
Dan Gohman
99b38405e3 Simplify some logic in ComputeMaskedBits. And change ComputeMaskedBits 
to pass the mask APInt by value, not by reference. 

llvm-svn: 47096
 2008-02-13 22:28:48 +00:00
Nicolas Geoffray
72fa78e195 Enable exception handling int JIT 
llvm-svn: 47079
 2008-02-13 18:39:37 +00:00
Evan Cheng
9c21fd25f0 Simplify. 
llvm-svn: 47059
 2008-02-13 09:18:16 +00:00
Evan Cheng
d4ddda68fa Initial support for copy elimination by commuting its definition MI. 
PR1877.
A3 = op A2 B0<kill>                                                                                                                                                                            
...                                                                                                                                                                                     
B1 = A3      <- this copy                                                                                                                                                                      
...                                                                                                                                                                                          
   = op A3   <- more uses                                                                                                                                                                      
                                                                                                                                                                                                 
==>                                                                                                                                                                                             
                                                                                                                                                                                            
B2 = op B0 A2<kill>                                                                                                                                                                            
...                                                                                                                                                                                          
B1 = B2      <- now an identify copy                                                                                                                                                           
...                                                                                                                                                                                          
   = op B2   <- more uses

This speeds up FreeBench/neural by 29%, Olden/bh by 12%, oopack_v1p8 by 53%.

llvm-svn: 47046
 2008-02-13 03:01:43 +00:00
Evan Cheng
da24989368 - Added removeValNo() to remove all live ranges of a particular value#. 
- removeRange() can now update value# information.

llvm-svn: 47044
 2008-02-13 02:48:26 +00:00
Evan Cheng
95894280dc Added debugging routine dumpUses. 
llvm-svn: 47042
 2008-02-13 02:45:38 +00:00
Dan Gohman
09023887f8 Convert SelectionDAG::ComputeMaskedBits to use APInt instead of uint64_t. 
Add an overload that supports the uint64_t interface for use by clients
that haven't been updated yet.

llvm-svn: 47039
 2008-02-13 00:35:47 +00:00
Dan Gohman
3e4b49b4a6 Add a doxygen comment for SrcValueSDNode, to make its purpose 
clear and to clarify how it differs from MemOperandSDNode.

llvm-svn: 47015
 2008-02-12 18:52:52 +00:00
Dan Gohman
861923ed06 From Chris' review: change MemOperandSDNode's constructor to pass its 
argument by reference, rather than by value. 

llvm-svn: 46960
 2008-02-11 18:56:50 +00:00
Dan Gohman
cabaec582f Rename MRegisterInfo to TargetRegisterInfo. 
llvm-svn: 46930
 2008-02-10 18:45:23 +00:00
Dan Gohman
672d341167 Change ConstantSDNode to store an APInt instead of a uint64_t, and 
begin adding some methods to use it this way.

llvm-svn: 46899
 2008-02-08 22:59:30 +00:00
Dan Gohman
1f255f2db7 Avoid needlessly casting away const qualifiers. 
llvm-svn: 46876
 2008-02-08 03:26:46 +00:00
Dan Gohman
eb7c8e4f6b Follow Chris' suggestion; change the PseudoSourceValue accessors 
to return pointers instead of references, since this is always what
is needed.

llvm-svn: 46857
 2008-02-07 18:41:25 +00:00
Dan Gohman
f00842e086 Re-apply the memory operand changes, with a fix for the static 
initializer problem, a minor tweak to the way the
DAGISelEmitter finds load/store nodes, and a renaming of the
new PseudoSourceValue objects.

llvm-svn: 46827
 2008-02-06 22:27:42 +00:00
Evan Cheng
ca7db1ca34 Unbreak teh build. 
llvm-svn: 46729
 2008-02-05 00:25:13 +00:00
Evan Cheng
352062f5f7 Typo. 
llvm-svn: 46725
 2008-02-04 23:10:38 +00:00
Chris Lattner
6ea106139d Change the 'global modification' APIs in SelectionDAG to take a new 
DAGUpdateListener object pointer instead of just returning a vector 
of deleted nodes.  This makes the interfaces more efficient (no more
allocating a vector [at least a malloc], filling it in, then walking
it) and more clean.  This also allows the client to be notified of
nodes that are *changed* but not deleted.

llvm-svn: 46677
 2008-02-03 06:49:24 +00:00
Evan Cheng
c57ec111f2 SDIsel processes llvm.dbg.declare by recording the variable debug information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc. 
Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes.
For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time.

llvm-svn: 46659
 2008-02-02 04:07:54 +00:00
Evan Cheng
d6222fc11d Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before. 
llvm-svn: 46635
 2008-02-01 09:10:45 +00:00
Evan Cheng
abe3a9ad27 Rename RecordLabel to RecordSourceLine because that's what it is doing. 
llvm-svn: 46628
 2008-02-01 02:05:57 +00:00
Evan Cheng
2a533e6894 Revert 46556 and 46585. Dan please fix the PseudoSourceValue problem and re-commit. 
llvm-svn: 46623
 2008-01-31 21:00:00 +00:00
Evan Cheng
705212577d Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution. 
llvm-svn: 46609
 2008-01-31 09:59:15 +00:00
Dan Gohman
703a070e12 Fix a typo in a comment. 
llvm-svn: 46588
 2008-01-31 00:44:33 +00:00
Dan Gohman
3993809a0c Rename ISD::FLT_ROUNDS to ISD::FLT_ROUNDS_ to avoid conflicting 
with the real FLT_ROUNDS (defined in <float.h>).

llvm-svn: 46587
 2008-01-31 00:41:03 +00:00
Dan Gohman
4326d513ab Create a new class, MemOperand, for describing memory references 
in the backend. Introduce a new SDNode type, MemOperandSDNode, for
holding a MemOperand in the SelectionDAG IR, and add a MemOperand
list to MachineInstr, and code to manage them. Remove the offset
field from SrcValueSDNode; uses of SrcValueSDNode that were using
it are all all using MemOperandSDNode now.

Also, begin updating some getLoad and getStore calls to use the
PseudoSourceValue objects.

Most of this was written by Florian Brander, some
reorganization and updating to TOT by me.

llvm-svn: 46585
 2008-01-31 00:25:39 +00:00
Evan Cheng
07f3cd3242 A semi-gross fix for a debug info issue. When inserting the "function start" label (i.e. first label in the entry block) take care to insert it at the beginning of the block. 
llvm-svn: 46568
 2008-01-30 19:35:32 +00:00
Dan Gohman
dd9be7d05e Add a new PseudoSourceValue class, which will be used to help track 
memory reference information in the backend. Most of this was written by
Florian Brander, cleanup and updating to TOT by me.

llvm-svn: 46556
 2008-01-30 16:35:31 +00:00
Dan Gohman
13d1327796 Factor the addressing mode and the load/store VT out of LoadSDNode 
and StoreSDNode into their common base class LSBaseSDNode. Member
functions getLoadedVT and getStoredVT are replaced with the common
getMemoryVT to simplify code that will handle both loads and stores.

llvm-svn: 46538
 2008-01-30 00:15:11 +00:00
Dan Gohman
c1c27c9fda Fix a typo in a comment. 
llvm-svn: 46507
 2008-01-29 12:06:33 +00:00
Dan Gohman
522401f26e Add explicit keywords. 
llvm-svn: 46506
 2008-01-29 11:36:12 +00:00
Owen Anderson
7ad72080a6 Fixes for BreakCriticalMachineCodeEdge by Fernando. 
llvm-svn: 46419
 2008-01-27 19:51:03 +00:00