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237a69b49c
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6597 Commits

Author SHA1 Message Date
Dan Gohman
237a69b49c Clean up some comments. 
llvm-svn: 49661
 2008-04-14 17:45:20 +00:00
Chris Lattner
f63bdaf0b5 add a new CallGraphNode::removeCallEdgeFor method, tidy some comments. 
llvm-svn: 49617
 2008-04-13 19:41:25 +00:00
Chris Lattner
f5e5f92891 Add support for equality comparison of CallSite's. 
llvm-svn: 49616
 2008-04-13 19:40:26 +00:00
Nicolas Geoffray
ad5556e8ba Add a divided flag for the first piece of an argument divided into mulitple parts. Fixes PR1643 
llvm-svn: 49611
 2008-04-13 13:40:22 +00:00
Duncan Sands
c5f548f784 Merge LLVMBuilder and FoldingBuilder, calling 
the result IRBuilder.  Patch by Dominic Hamon.

llvm-svn: 49604
 2008-04-13 06:22:09 +00:00
Dan Gohman
15edbf989f Drop ISD::MEMSET, ISD::MEMMOVE, and ISD::MEMCPY, which are not Legal 
on any current target and aren't optimized in DAGCombiner. Instead
of using intermediate nodes, expand the operations, choosing between
simple loads/stores, target-specific code, and library calls,
immediately.

Previously, the code to emit optimized code for these operations
was only used at initial SelectionDAG construction time; now it is
used at all times. This fixes some cases where rep;movs was being
used for small copies where simple loads/stores would be better.

This also cleans up code that checks for alignments less than 4;
let the targets make that decision instead of doing it in
target-independent code. This allows x86 to use rep;movs in
low-alignment cases.

Also, this fixes a bug that resulted in the use of rep;stos for
memsets of 0 with non-constant memory size when the alignment was
at least 4. It's better to use the library in this case, which
can be significantly faster when the size is large.

This also preserves more SourceValue information when memory
intrinsics are lowered into simple loads/stores.

llvm-svn: 49572
 2008-04-12 04:36:06 +00:00
Evan Cheng
b389b78462 Use of implicit_def is not part of live interval. Create empty intervals for the uses when the live interval is being spilled. 
llvm-svn: 49542
 2008-04-11 17:53:36 +00:00
Chris Lattner
01e31663c8 improvements for IntrusiveRefCntPtr, patch by Mikhail Glushenkov 
llvm-svn: 49538
 2008-04-11 16:42:06 +00:00
Evan Cheng
52208a738f Allow registers defined by implicit_def to be clobbered. 
llvm-svn: 49512
 2008-04-10 23:47:53 +00:00
Dan Gohman
aa52f1c5b0 Fix a typo in a comment. 
llvm-svn: 49502
 2008-04-10 22:27:06 +00:00
Dan Gohman
b3a511b236 Make isVectorClearMaskLegal's operand list const. 
llvm-svn: 49446
 2008-04-09 20:09:42 +00:00
Dan Gohman
b05ea92f80 Fix some minor errors in comments. 
llvm-svn: 49445
 2008-04-09 20:08:06 +00:00
Dan Gohman
0586403622 Add const qualifiers. 
llvm-svn: 49443
 2008-04-09 18:31:41 +00:00
Dan Gohman
f03c4d87c0 Update comments to use 2.0 syntax type names. 
llvm-svn: 49442
 2008-04-09 18:24:25 +00:00
Chris Lattner
02cc33d0ad ConstantFP::get should be static. 
llvm-svn: 49434
 2008-04-09 17:16:28 +00:00
Owen Anderson
ca7e0e21f3 Factor a bunch of functionality related to memcpy and memset transforms out of 
GVN and into its own pass.

llvm-svn: 49419
 2008-04-09 08:23:16 +00:00
Evan Cheng
94983505c5 Unbreak teh build. 
llvm-svn: 49417
 2008-04-09 07:06:01 +00:00
Chris Lattner
9d4d2f566e add a version of ConstantFP::get that doesn't take a redundant Type* value, 
start migrating code over to use it.

llvm-svn: 49413
 2008-04-09 00:45:01 +00:00
Chris Lattner
6e11e1a381 make ConstantFP::isExactlyValue work for long double as well. 
llvm-svn: 49410
 2008-04-09 00:03:58 +00:00
Devang Patel
f08f0a6de6 Add CreateGetResult() 
llvm-svn: 49398
 2008-04-08 20:41:22 +00:00
Devang Patel
dd9f2ea01f Add multiple value return instruction constructor. 
llvm-svn: 49374
 2008-04-08 07:30:13 +00:00
Duncan Sands
f86399a00f Convenience method for setting the nounwind 
attribute for a function.

llvm-svn: 49373
 2008-04-08 07:23:58 +00:00
Dale Johannesen
ec0fe04044 Implement new llc flag -disable-required-unwind-tables. 
Corresponds to -fno-unwind-tables (usually default in gcc).

llvm-svn: 49361
 2008-04-08 00:10:24 +00:00
Ted Kremenek
be2279d470 Make getDirnameSep a static method (not part of Path's interface). 
llvm-svn: 49354
 2008-04-07 22:01:32 +00:00
Ted Kremenek
82b7e8d306 Added method Path::getDirname(). 
llvm-svn: 49352
 2008-04-07 21:53:57 +00:00
Sam Bishop
41916aad58 Added support for Create() calls that take an argument besides the 
deserializer.

llvm-svn: 49350
 2008-04-07 21:36:46 +00:00
Dan Gohman
d7301ea935 Rename MemOperand to MachineMemOperand. This was suggested by 
review feedback from Chris quite a while ago. No functionality
change.

llvm-svn: 49348
 2008-04-07 19:35:22 +00:00
Owen Anderson
4ad5a5201c Add operator= implementations to SparseBitVector, allowing it to be used in GVN. This results 
in both time and memory savings for GVN.  For example, one testcase went from 10.5s to 6s with
this patch.

llvm-svn: 49345
 2008-04-07 17:38:23 +00:00
Roman Levenstein
b40d332929 Re-commit of the r48822, where the infinite looping problem discovered 
by Dan Gohman is fixed.

llvm-svn: 49330
 2008-04-07 10:06:32 +00:00
Owen Anderson
93ab00f1d9 Make GVN more memory efficient, particularly on code that contains a large number of 
allocations, which GVN can't optimize anyways.

llvm-svn: 49329
 2008-04-07 09:59:07 +00:00
Gabor Greif
6c6b8a57f3 API changes for class Use size reduction, wave 1. 
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
 2008-04-06 20:25:17 +00:00
Evan Cheng
9045e3dd2f Forgot this. 
llvm-svn: 49247
 2008-04-05 02:17:58 +00:00
Duncan Sands
9931451472 If a value is cast to its own type, then the cast 
is not needed.

llvm-svn: 49210
 2008-04-04 08:28:13 +00:00
Chris Lattner
0891662a49 Make ExecutionEngine::updateGlobalMapping return the old mapping. 
llvm-svn: 49206
 2008-04-04 04:47:41 +00:00
Ted Kremenek
2184f6cc1d Add member template version of SerializeTrait<T>::Create that also accepts 
an optional argument for us by T's Create method.

llvm-svn: 49169
 2008-04-03 16:44:37 +00:00
Evan Cheng
ff9c1655de Special handling of zero-sized live intervals. 
llvm-svn: 49167
 2008-04-03 16:40:27 +00:00
Evan Cheng
6250bfbd3e - Treat a live range defined by an implicit_def as a zero-sized one. 
- Eliminate an implicit_def when it's being spilled.

llvm-svn: 49166
 2008-04-03 16:39:43 +00:00
Evan Cheng
53c8db51dd Start of a series of patches related to implicit_def. 
There is no point in creating a long live range defined by an implicit_def. Scheduler now duplicates implicit_def instruction for each of its uses. Therefore, if an implicit_def node has multiple uses, it will become a number of very short live ranges, rather than a long one. This will make coalescer's job easier.

llvm-svn: 49164
 2008-04-03 16:36:07 +00:00
Evan Cheng
497c607fae Backing out 48222 temporarily. 
llvm-svn: 49124
 2008-04-03 03:13:16 +00:00
David Greene
0ca05878fe Iterators folloring a SmallVector erased element are invalidated so 
don't access cached iterators from after the erased element.

Re-apply 49056 with SmallVector support.

llvm-svn: 49106
 2008-04-02 18:24:46 +00:00
Evan Cheng
748a0c9215 Now that I am told MachineRegisterInfo also tracks physical register uses / defs, I can do away with the horribleness I introduced a while back. It's impossible to detect if there is any use of a physical register below an instruction (and before any def of the register) with some cheap book keeping. 
llvm-svn: 49105
 2008-04-02 18:04:08 +00:00
Evan Cheng
4e841d67ed Remove #include<map> from LiveVariables.h. Not referenced. 
llvm-svn: 49099
 2008-04-02 17:23:50 +00:00
Torok Edwin
b96b953a5c Add new file Support/DataFlow.h. 
It allows Use-Def and Def-Use relations to be treated as graphs.

llvm-svn: 49088
 2008-04-02 14:57:52 +00:00
Anton Korobeynikov
d3330dfbf6 Add new CC lowering rule: provide a list of registers, which can be 'shadowed', 
when some another register is used for argument passing.
Currently is used on Win64.

llvm-svn: 49079
 2008-04-02 05:23:57 +00:00
Dale Johannesen
79633a914f Recommitting EH patch; this should answer most of the 
review feedback.
-enable-eh is still accepted but doesn't do anything.
EH intrinsics use Dwarf EH if the target supports that,
and are handled by LowerInvoke otherwise.
The separation of the EH table and frame move data is,
I think, logically figured out, but either one still
causes full EH info to be generated (not sure how to
split the metadata correctly).
MachineModuleInfo::needsFrameInfo is no longer used and
is removed.

llvm-svn: 49064
 2008-04-02 00:25:04 +00:00
Chris Lattner
d141d16ed7 Change the MemoryBuffer::getFile* methods to take just a pointer to the 
start of a filename, not a filename+length.  All clients can produce a
null terminated name, and the system api's require null terminated 
strings anyway.

llvm-svn: 49041
 2008-04-01 18:04:03 +00:00
Chris Lattner
4614369b45 MappedFile is dead, remove it. 
llvm-svn: 49035
 2008-04-01 06:20:44 +00:00
Chris Lattner
2e3d2c6ec8 Stub out some sys::Path::MapInFilePages/UnMapFilePages methods. 
llvm-svn: 49030
 2008-04-01 06:00:12 +00:00
Chris Lattner
5ba3ea7b4c change the archive stuff to use MemoryBuffer instead of mappedfile. 
MemoryBuffer is higher level and more closely matches the model
needed.

llvm-svn: 49029
 2008-04-01 04:26:46 +00:00
Chris Lattner
a638713d10 prune unneeded #includes 
llvm-svn: 49028
 2008-04-01 04:00:45 +00:00