Bill Wendling
45432e8339
Add "empty()" method to sys::Path and remove unnecessary whitespace.
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Patch by Mikhail Glushenkov!
llvm-svn: 49803
2008-04-16 18:27:02 +00:00
Roman Levenstein
728d59166f
Ongoing work on improving the instruction selection infrastructure:
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Rename SDOperandImpl back to SDOperand.
Introduce the SDUse class that represents a use of the SDNode referred by
an SDOperand. Now it is more similar to Use/Value classes.
Patch is approved by Dan Gohman.
llvm-svn: 49795
2008-04-16 16:15:27 +00:00
Gabor Greif
32b4942a0a
merge of r49785 (from branches/ggreif/use-diet): pass V to dyn_cast by const reference, this avoids copy-constructing and destructing all the time. especially important if these constructors are not accessible
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llvm-svn: 49787
2008-04-16 11:43:47 +00:00
Evan Cheng
6d05ce493b
Rewrite LiveVariable liveness computation. The new implementation is much simplified. It eliminated the nasty recursive routines and removed the partial def / use bookkeeping. There is also potential for performance improvement by replacing the conservative handling of partial physical register definitions. The code is currently disabled until live interval analysis is taught of the name scheme.
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This patch also fixed a couple of nasty corner cases.
llvm-svn: 49784
2008-04-16 09:46:40 +00:00
Owen Anderson
030428b435
Major repairs to the post-dominators implementation. Patch from Florian Brandner!
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llvm-svn: 49768
2008-04-16 04:21:16 +00:00
Chris Lattner
3d52eb61ca
fix off by one error.
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llvm-svn: 49766
2008-04-16 04:10:37 +00:00
Chris Lattner
f24665de72
give smallstring some methods to do 'itoa'.
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llvm-svn: 49765
2008-04-16 04:05:02 +00:00
Dale Johannesen
f45cadf9d2
Make 64-to-32 bit truncations explicit (prevent warnings).
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All values here fit in 32 bits.
llvm-svn: 49736
2008-04-15 18:44:59 +00:00
Nicolas Geoffray
7e0110f724
Change Divided flag to Split, as suggested by Evan
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llvm-svn: 49715
2008-04-15 08:08:50 +00:00
Evan Cheng
cff9295e43
Sort sub-registers and super-registers lists according to super-sub register relations. e.g. X86::RAX sub-register list is EAX, AX, AL, AH (order of last two are not guaranteed).
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llvm-svn: 49714
2008-04-15 07:56:03 +00:00
Dan Gohman
3b99b3c807
Treat EntryToken nodes as "passive" so that they aren't added to the
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ScheduleDAG; they don't correspond to any actual instructions so they
don't need to be scheduled.
This fixes a bug where the EntryToken was being scheduled multiple
times in some cases, though it ended up not causing any trouble because
EntryToken doesn't expand into anything. With this fixed the schedulers
reliably schedule the expected number of units, so we can check this
with an assertion.
This requires a tweak to test/CodeGen/X86/loop-hoist.ll because it
ends up getting scheduled differently in a trivial way, though it was
enough to fool the prcontext+grep that the test does.
llvm-svn: 49701
2008-04-15 01:22:18 +00:00
Dan Gohman
dfa422fe9e
In -view-sunit-dags, display "special" chain dependencies as cyan
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instead of blue to distinguish them from regular dependencies.
llvm-svn: 49696
2008-04-14 23:15:07 +00:00
Dan Gohman
14dce3e51c
Teach AliasSetTracker about VAArgInst.
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llvm-svn: 49674
2008-04-14 18:34:50 +00:00
Dan Gohman
8d46278998
Fix const-correctness issues with the SrcValue handling in the
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memory intrinsic expansion code.
llvm-svn: 49666
2008-04-14 17:55:48 +00:00
Dale Johannesen
edcba1161f
Reverse sense of unwind-tables option. This means
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stack tracebacks on Darwin x86-64 won't work by default;
nevertheless, everybody but me thinks this is a good idea.
llvm-svn: 49663
2008-04-14 17:54:17 +00:00
Dan Gohman
237a69b49c
Clean up some comments.
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llvm-svn: 49661
2008-04-14 17:45:20 +00:00
Chris Lattner
f63bdaf0b5
add a new CallGraphNode::removeCallEdgeFor method, tidy some comments.
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llvm-svn: 49617
2008-04-13 19:41:25 +00:00
Chris Lattner
f5e5f92891
Add support for equality comparison of CallSite's.
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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
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llvm-svn: 49611
2008-04-13 13:40:22 +00:00
Duncan Sands
c5f548f784
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
Dan Gohman
15edbf989f
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
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.
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llvm-svn: 49542
2008-04-11 17:53:36 +00:00
Chris Lattner
01e31663c8
improvements for IntrusiveRefCntPtr, patch by Mikhail Glushenkov
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llvm-svn: 49538
2008-04-11 16:42:06 +00:00
Evan Cheng
52208a738f
Allow registers defined by implicit_def to be clobbered.
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llvm-svn: 49512
2008-04-10 23:47:53 +00:00
Dan Gohman
aa52f1c5b0
Fix a typo in a comment.
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llvm-svn: 49502
2008-04-10 22:27:06 +00:00
Dan Gohman
b3a511b236
Make isVectorClearMaskLegal's operand list const.
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llvm-svn: 49446
2008-04-09 20:09:42 +00:00
Dan Gohman
b05ea92f80
Fix some minor errors in comments.
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llvm-svn: 49445
2008-04-09 20:08:06 +00:00
Dan Gohman
0586403622
Add const qualifiers.
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llvm-svn: 49443
2008-04-09 18:31:41 +00:00
Dan Gohman
f03c4d87c0
Update comments to use 2.0 syntax type names.
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llvm-svn: 49442
2008-04-09 18:24:25 +00:00
Chris Lattner
02cc33d0ad
ConstantFP::get should be static.
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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
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GVN and into its own pass.
llvm-svn: 49419
2008-04-09 08:23:16 +00:00
Evan Cheng
94983505c5
Unbreak teh build.
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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,
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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.
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llvm-svn: 49410
2008-04-09 00:03:58 +00:00
Devang Patel
f08f0a6de6
Add CreateGetResult()
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llvm-svn: 49398
2008-04-08 20:41:22 +00:00
Devang Patel
dd9f2ea01f
Add multiple value return instruction constructor.
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llvm-svn: 49374
2008-04-08 07:30:13 +00:00
Duncan Sands
f86399a00f
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
Dale Johannesen
ec0fe04044
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
Ted Kremenek
be2279d470
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
Ted Kremenek
82b7e8d306
Added method Path::getDirname().
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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
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deserializer.
llvm-svn: 49350
2008-04-07 21:36:46 +00:00
Dan Gohman
d7301ea935
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
Owen Anderson
4ad5a5201c
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
Roman Levenstein
b40d332929
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
Owen Anderson
93ab00f1d9
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
Gabor Greif
6c6b8a57f3
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
Evan Cheng
9045e3dd2f
Forgot this.
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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
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is not needed.
llvm-svn: 49210
2008-04-04 08:28:13 +00:00
Chris Lattner
0891662a49
Make ExecutionEngine::updateGlobalMapping return the old mapping.
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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
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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