a07136ee2d
Merge LLVMBuilder and FoldingBuilder, calling
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the result IRBuilder. Patch by Dominic Hamon.
llvm-svn: 49604
2008-04-13 06:22:09 +00:00
544ab2c50b
Drop ISD::MEMSET, ISD::MEMMOVE, and ISD::MEMCPY, which are not Legal
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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
499ffa9055
Use of implicit_def is not part of live interval. Create empty intervals for the uses when the live interval is being spilled.
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llvm-svn: 49542
2008-04-11 17:53:36 +00:00
0b596c3f5a
improvements for IntrusiveRefCntPtr, patch by Mikhail Glushenkov
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llvm-svn: 49538
2008-04-11 16:42:06 +00:00
2cb98eb4bb
Allow registers defined by implicit_def to be clobbered.
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llvm-svn: 49512
2008-04-10 23:47:53 +00:00
7603a182cc
Fix a typo in a comment.
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llvm-svn: 49502
2008-04-10 22:27:06 +00:00
33b3300178
Make isVectorClearMaskLegal's operand list const.
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llvm-svn: 49446
2008-04-09 20:09:42 +00:00
44b3005e86
Fix some minor errors in comments.
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llvm-svn: 49445
2008-04-09 20:08:06 +00:00
3049516bd5
Add const qualifiers.
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llvm-svn: 49443
2008-04-09 18:31:41 +00:00
bb0022b810
Update comments to use 2.0 syntax type names.
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llvm-svn: 49442
2008-04-09 18:24:25 +00:00
0704e3acff
ConstantFP::get should be static.
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llvm-svn: 49434
2008-04-09 17:16:28 +00:00
ef9a6fd5c2
Factor a bunch of functionality related to memcpy and memset transforms out of
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GVN and into its own pass.
llvm-svn: 49419
2008-04-09 08:23:16 +00:00
0515472470
Unbreak teh build.
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llvm-svn: 49417
2008-04-09 07:06:01 +00:00
b5b3e3136b
add a version of ConstantFP::get that doesn't take a redundant Type* value,
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start migrating code over to use it.
llvm-svn: 49413
2008-04-09 00:45:01 +00:00
8ca9450885
make ConstantFP::isExactlyValue work for long double as well.
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llvm-svn: 49410
2008-04-09 00:03:58 +00:00
0a14b5b649
Add CreateGetResult()
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llvm-svn: 49398
2008-04-08 20:41:22 +00:00
3d840ded0d
Add multiple value return instruction constructor.
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llvm-svn: 49374
2008-04-08 07:30:13 +00:00
57d3a36386
Convenience method for setting the nounwind
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attribute for a function.
llvm-svn: 49373
2008-04-08 07:23:58 +00:00
344aec2952
Implement new llc flag -disable-required-unwind-tables.
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Corresponds to -fno-unwind-tables (usually default in gcc).
llvm-svn: 49361
2008-04-08 00:10:24 +00:00
a518bb79b1
Make getDirnameSep a static method (not part of Path's interface).
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llvm-svn: 49354
2008-04-07 22:01:32 +00:00
c042bf1db5
Added method Path::getDirname().
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llvm-svn: 49352
2008-04-07 21:53:57 +00:00
3a13067557
Added support for Create() calls that take an argument besides the
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deserializer.
llvm-svn: 49350
2008-04-07 21:36:46 +00:00
3bc3ddd638
Rename MemOperand to MachineMemOperand. This was suggested by
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review feedback from Chris quite a while ago. No functionality
change.
llvm-svn: 49348
2008-04-07 19:35:22 +00:00
ed92b41a39
Add operator= implementations to SparseBitVector, allowing it to be used in GVN. This results
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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
51f532f92d
Re-commit of the r48822, where the infinite looping problem discovered
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by Dan Gohman is fixed.
llvm-svn: 49330
2008-04-07 10:06:32 +00:00
0c1e634cbb
Make GVN more memory efficient, particularly on code that contains a large number of
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allocations, which GVN can't optimize anyways.
llvm-svn: 49329
2008-04-07 09:59:07 +00:00
e9ecc68d8f
API changes for class Use size reduction, wave 1.
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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
c975d7b30d
Forgot this.
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llvm-svn: 49247
2008-04-05 02:17:58 +00:00
4cbca05d4e
If a value is cast to its own type, then the cast
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is not needed.
llvm-svn: 49210
2008-04-04 08:28:13 +00:00
ee1817300a
Make ExecutionEngine::updateGlobalMapping return the old mapping.
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llvm-svn: 49206
2008-04-04 04:47:41 +00:00
73ac2048f9
Add member template version of SerializeTrait<T>::Create that also accepts
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an optional argument for us by T's Create method.
llvm-svn: 49169
2008-04-03 16:44:37 +00:00
6d07b625aa
Special handling of zero-sized live intervals.
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llvm-svn: 49167
2008-04-03 16:40:27 +00:00
20aed56504
- Treat a live range defined by an implicit_def as a zero-sized one.
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- Eliminate an implicit_def when it's being spilled.
llvm-svn: 49166
2008-04-03 16:39:43 +00:00
916802a78e
Start of a series of patches related to implicit_def.
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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
025cea1126
Backing out 48222 temporarily.
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llvm-svn: 49124
2008-04-03 03:13:16 +00:00
586740f401
Iterators folloring a SmallVector erased element are invalidated so
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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
d8616064d8
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.
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llvm-svn: 49105
2008-04-02 18:04:08 +00:00
be3d44c3cb
Remove #include<map> from LiveVariables.h. Not referenced.
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llvm-svn: 49099
2008-04-02 17:23:50 +00:00
21b8bed571
Add new file Support/DataFlow.h.
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It allows Use-Def and Def-Use relations to be treated as graphs.
llvm-svn: 49088
2008-04-02 14:57:52 +00:00
20c9e4cbee
Add new CC lowering rule: provide a list of registers, which can be 'shadowed',
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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
fd967cf3fa
Recommitting EH patch; this should answer most of the
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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
6f2ffdb73f
Change the MemoryBuffer::getFile* methods to take just a pointer to the
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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
18356d8857
MappedFile is dead, remove it.
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llvm-svn: 49035
2008-04-01 06:20:44 +00:00
3089e1d82e
Stub out some sys::Path::MapInFilePages/UnMapFilePages methods.
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llvm-svn: 49030
2008-04-01 06:00:12 +00:00
d4310a27aa
change the archive stuff to use MemoryBuffer instead of mappedfile.
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MemoryBuffer is higher level and more closely matches the model
needed.
llvm-svn: 49029
2008-04-01 04:26:46 +00:00
014dea94b2
prune unneeded #includes
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llvm-svn: 49028
2008-04-01 04:00:45 +00:00
4ac7bb0294
rewrite SourceFile to be in terms of MemoryBuffer, not MappedFile.
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llvm-svn: 49027
2008-04-01 03:59:34 +00:00
64959dcf03
Make MappedFile::map return a const correct pointer, don't leak address space on Unix platforms.
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llvm-svn: 49026
2008-04-01 03:49:38 +00:00
bcfa564759
Remove the MappedFile::charBase member, rename base -> getBase() and
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make getBase() return a const-correct pointer.
llvm-svn: 49025
2008-04-01 03:40:53 +00:00
5a7d4e4f6d
add an accessor.
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llvm-svn: 49023
2008-04-01 03:20:31 +00:00
Duncan Sands