Rafael Espindola [Fri, 24 Apr 2009 12:40:33 +0000 (12:40 +0000)]
Revert 69952. Causes testsuite failures on linux x86-64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69967
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Chris Lattner [Fri, 24 Apr 2009 06:37:12 +0000 (06:37 +0000)]
fix a typo noticed by duncan
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69962
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Chris Lattner [Fri, 24 Apr 2009 05:30:14 +0000 (05:30 +0000)]
"I got annoyed at the compiler warnings from ConstantInt::get(Ty, -1,
true), and casts make me nervous and are verbose anyway, so here's a
ConstantInt::getSigned(Ty, int64_t) method. Just overloading
ConstantInt::get() to take an int64_t too would cause ambiguous
overload errors."
Patch by Jeffrey Yasskin!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69958
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Nate Begeman [Fri, 24 Apr 2009 03:42:54 +0000 (03:42 +0000)]
PR2957
ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask. A value of -1 represents UNDEF.
In addition to eliminating the creation of illegal BUILD_VECTORS just to
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.
A clean up of x86 shuffle code, and some canonicalizing in DAGCombiner is next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69952
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Dan Gohman [Fri, 24 Apr 2009 02:40:23 +0000 (02:40 +0000)]
Instead of requiring TLI.LowerCallTo to return an ISD::BUILD_PAIR,
use ISD::EXTRACT_ELEMENT. SelectionDAG has a special fast-path for
the cast of an EXTRACT_ELEMENT with a BUILD_PAIR operand, for the
common case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69948
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Sanjiv Gupta [Fri, 24 Apr 2009 02:37:54 +0000 (02:37 +0000)]
Allow i16 type indices to gep.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69946
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Dan Gohman [Thu, 23 Apr 2009 23:13:24 +0000 (23:13 +0000)]
Factor out a bit of code that appears in several places into a
utility function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69937
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Dan Gohman [Thu, 23 Apr 2009 22:50:03 +0000 (22:50 +0000)]
Handle Void types in ComputeValueVTs. This doesn't currently occur,
but this change makes the code more general and easier to adapt for
new purposes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69935
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Dan Gohman [Thu, 23 Apr 2009 22:41:05 +0000 (22:41 +0000)]
Fix spurious indentation in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69934
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David Greene [Thu, 23 Apr 2009 21:27:58 +0000 (21:27 +0000)]
Fix a documentation bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69923
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David Greene [Thu, 23 Apr 2009 21:25:15 +0000 (21:25 +0000)]
Make BinOps typed and require a type specifier for !nameconcat. This
allows binops to be used in typed contexts such as when passing
arguments to classes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69921
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Evan Cheng [Thu, 23 Apr 2009 20:39:31 +0000 (20:39 +0000)]
Update comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69919
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Evan Cheng [Thu, 23 Apr 2009 20:18:13 +0000 (20:18 +0000)]
Fix an obvious type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69918
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Dan Gohman [Thu, 23 Apr 2009 19:39:41 +0000 (19:39 +0000)]
Explicitly pass -tailcallopt=false to these tests so that they
work as intended no matter what the default setting of that
option is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69911
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Dale Johannesen [Thu, 23 Apr 2009 18:04:04 +0000 (18:04 +0000)]
Testcase for 69795.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69901
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Dan Gohman [Thu, 23 Apr 2009 15:22:28 +0000 (15:22 +0000)]
Fix an error in this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69893
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Dan Gohman [Thu, 23 Apr 2009 15:16:49 +0000 (15:16 +0000)]
Change SCEVExpander's expandCodeFor to provide more flexibility
with the persistent insertion point, and change IndVars to make
use of it. This fixes a bug where IndVars was holding on to a
stale insertion point and forcing the SCEVExpander to continue to
use it.
This fixes PR4038.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69892
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Sanjiv Gupta [Thu, 23 Apr 2009 10:34:58 +0000 (10:34 +0000)]
Banksel immediate constant will always immediately follow the GA/ES, so scan an insn from beginnin to find out the banksel operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69883
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Nick Lewycky [Thu, 23 Apr 2009 05:15:08 +0000 (05:15 +0000)]
Simplify trunc(extend(x)) in SCEVs, just for completeness. Also fix some odd
whitespace in the same file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69870
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Owen Anderson [Thu, 23 Apr 2009 04:33:42 +0000 (04:33 +0000)]
Testcase for PR3909.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69868
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Owen Anderson [Thu, 23 Apr 2009 04:30:52 +0000 (04:30 +0000)]
Testcase for PR2639.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69867
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Owen Anderson [Thu, 23 Apr 2009 04:26:42 +0000 (04:26 +0000)]
Testcase for PR2537.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69866
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Owen Anderson [Thu, 23 Apr 2009 04:24:19 +0000 (04:24 +0000)]
Fix typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69865
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Owen Anderson [Thu, 23 Apr 2009 04:21:14 +0000 (04:21 +0000)]
Testcase for PR3085.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69863
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Owen Anderson [Thu, 23 Apr 2009 04:14:03 +0000 (04:14 +0000)]
Add testcase from PR3086.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69862
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Dan Gohman [Thu, 23 Apr 2009 00:57:37 +0000 (00:57 +0000)]
Add support for printing MO_ExternalSymbol operands in
memory operand tuples. This doesn't ever come up in normal
code however.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69848
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Dan Gohman [Thu, 23 Apr 2009 00:28:31 +0000 (00:28 +0000)]
Add more ulimit limits, to catch more kinds of runaway behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69847
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Owen Anderson [Thu, 23 Apr 2009 00:15:26 +0000 (00:15 +0000)]
Use the testcase from PR2791.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69846
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Evan Cheng [Wed, 22 Apr 2009 23:39:28 +0000 (23:39 +0000)]
Make sure both operands have binary instructions have the same type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69844
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Evan Cheng [Wed, 22 Apr 2009 23:09:16 +0000 (23:09 +0000)]
A few more places where the check of use_empty is needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69842
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Evan Cheng [Wed, 22 Apr 2009 22:45:37 +0000 (22:45 +0000)]
Avoid deferencing use_begin() if value does not have a use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69836
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David Greene [Wed, 22 Apr 2009 22:17:51 +0000 (22:17 +0000)]
Allow defm to inherit from multiple multiclasses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69832
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David Greene [Wed, 22 Apr 2009 20:18:10 +0000 (20:18 +0000)]
Implement !nameconcat to concatenate strings and look up the resulting
name in the symbol table, returning an object.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69822
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Duncan Sands [Wed, 22 Apr 2009 18:55:17 +0000 (18:55 +0000)]
Testcase for PR2958.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69818
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Devang Patel [Wed, 22 Apr 2009 18:51:05 +0000 (18:51 +0000)]
Fix cut-n-pasto.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69816
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David Greene [Wed, 22 Apr 2009 16:42:54 +0000 (16:42 +0000)]
Implement multiclass inheritance.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69810
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Dan Gohman [Wed, 22 Apr 2009 16:20:48 +0000 (16:20 +0000)]
Simplify trivial cast-of-cast SCEVs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69809
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Dan Gohman [Wed, 22 Apr 2009 16:11:16 +0000 (16:11 +0000)]
SCEVExpander's InsertCastOfTo knows how to move existing cast
instructions in order to avoid inserting new ones. However, if
the cast instruction is the SCEVExpander's InsertPt, this
causes subsequently emitted instructions to be inserted near
the cast, and not at the location of the original insert point.
Fix this by adjusting the insert point in such cases.
This fixes PR4009.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69808
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Dan Gohman [Wed, 22 Apr 2009 16:05:50 +0000 (16:05 +0000)]
Use BasicBlock::iterator instead of Instruction* for insert points,
to better handle inserting instructions at the end of a block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69807
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Dan Gohman [Wed, 22 Apr 2009 16:00:36 +0000 (16:00 +0000)]
Make SCEVExpanders private methods private, instead of protected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69806
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Dan Gohman [Wed, 22 Apr 2009 15:57:18 +0000 (15:57 +0000)]
Use CloneModule's ValueMap in more places, instead of looking
up functions by name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69805
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Dan Gohman [Wed, 22 Apr 2009 15:55:31 +0000 (15:55 +0000)]
ISD::ADD_PARTS is gone; use ISD::SMUL_LOHI as an example instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69804
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Sanjiv Gupta [Wed, 22 Apr 2009 12:02:36 +0000 (12:02 +0000)]
Make the function begin label start after ther data pointer.
The address of data frame for function can be obtained by subtracting 2 from the function begin label.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69801
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Duncan Sands [Wed, 22 Apr 2009 10:39:51 +0000 (10:39 +0000)]
These tests are x86 specific.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69798
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Owen Anderson [Wed, 22 Apr 2009 08:50:12 +0000 (08:50 +0000)]
Real fix for PR3549, by using caching for predecessor counts in addition to the predecessors themselves. This halves the time
to optimize the testcase, beyond what my previous patch did.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69792
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Owen Anderson [Wed, 22 Apr 2009 08:46:33 +0000 (08:46 +0000)]
Add caching of predecessor counts as well as predecessors themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69791
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Owen Anderson [Wed, 22 Apr 2009 08:09:13 +0000 (08:09 +0000)]
Use PredIteratorCache in LCSSA, which gives a 37% overall speedup on the testcase from PR3549. More improvements to come.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69788
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Owen Anderson [Wed, 22 Apr 2009 07:16:54 +0000 (07:16 +0000)]
Fix for PR3946, in which SmallVector could behave strangely in corner cases.
Patch by Peter Johnson.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69785
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Chris Lattner [Tue, 21 Apr 2009 23:37:18 +0000 (23:37 +0000)]
use predicate instead of hand-rolled loop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69752
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Dan Gohman [Tue, 21 Apr 2009 23:15:49 +0000 (23:15 +0000)]
De-pImpl-ify ScalarEvolution. The pImpl pattern doesn't provide much
practical benefit in the case of ScalarEvolution, and it's otherwise
a nuisance.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69749
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Evan Cheng [Tue, 21 Apr 2009 22:46:52 +0000 (22:46 +0000)]
It has finally happened. Spiller is now using live interval info.
This fixes a very subtle bug. vr defined by an implicit_def is allowed overlap with any register since it doesn't actually modify anything. However, if it's used as a two-address use, its live range can be extended and it can be spilled. The spiller must take care not to emit a reload for the vn number that's defined by the implicit_def. This is both a correctness and performance issue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69743
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Dan Gohman [Tue, 21 Apr 2009 20:18:36 +0000 (20:18 +0000)]
When turning (ashr(shl(x, n), n)) into sext(trunc(x)), the width of the
type to truncate to should be the number of bits of the value that are
preserved, not the number that are clobbered with sign-extension.
This fixes regressions in ldecod.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69704
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Mikhail Glushenkov [Tue, 21 Apr 2009 19:46:10 +0000 (19:46 +0000)]
Support --with-llvmgccdir and friends in llvmc, take 2.
Should now work when building with objdir != srcdir and when llvm-gcc is not
available.
Thanks to Duncan Sands for testing and advice!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69700
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Devang Patel [Tue, 21 Apr 2009 17:21:01 +0000 (17:21 +0000)]
Test case for revision 69683.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69684
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Chris Lattner [Tue, 21 Apr 2009 16:52:12 +0000 (16:52 +0000)]
fix a crash on a pointless but valid zero-length memset, rdar://
6808691
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69680
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Anton Korobeynikov [Tue, 21 Apr 2009 16:04:56 +0000 (16:04 +0000)]
Silence warnings.
Patch by Jay Foad!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69679
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Anton Korobeynikov [Tue, 21 Apr 2009 16:04:41 +0000 (16:04 +0000)]
Drop obsolete reference to __eprintf.
Patch by Jay Foad!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69678
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Anton Korobeynikov [Tue, 21 Apr 2009 16:04:14 +0000 (16:04 +0000)]
'The "or die" is intended to catch the case where nm returned a
non-zero exit status, so nm will already have printed some error
messages.'
Patch by Jay Foad!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69677
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Duncan Sands [Tue, 21 Apr 2009 09:44:39 +0000 (09:44 +0000)]
Get rid of what looks like a copy-and-pasted typo.
Spotted by gcc-4.5.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69673
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Rafael Espindola [Tue, 21 Apr 2009 08:22:09 +0000 (08:22 +0000)]
TLS_addr64 and TLS_addr32 define RDI and EAX. They don't use them.
This fixes PR4002.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69672
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Sanjiv Gupta [Tue, 21 Apr 2009 05:54:51 +0000 (05:54 +0000)]
Handle direct aggregate type arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69665
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Dan Gohman [Tue, 21 Apr 2009 02:26:00 +0000 (02:26 +0000)]
Teach ScalarEvolution how to recognize zext-inreg and sext-inreg,
as they appear in LLVM IR. This isn't particularly interesting
on its own; this is just setting up some infrastructure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69655
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Dan Gohman [Tue, 21 Apr 2009 01:41:18 +0000 (01:41 +0000)]
This FIXME is fixed, now that SCEV understands pointers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69651
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Dan Gohman [Tue, 21 Apr 2009 01:25:57 +0000 (01:25 +0000)]
Factor out a common base class from SCEVTruncateExpr, SCEVZeroExtendExpr,
and SCEVSignExtendExpr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69649
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Dan Gohman [Tue, 21 Apr 2009 01:11:19 +0000 (01:11 +0000)]
Usage getAnalysisToUpdate for TargetData, per PR760.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69645
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Dan Gohman [Tue, 21 Apr 2009 01:07:12 +0000 (01:07 +0000)]
Introduce encapsulation for ScalarEvolution's TargetData object, and refactor
the code to minimize dependencies on TargetData.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69644
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Dan Gohman [Tue, 21 Apr 2009 00:55:22 +0000 (00:55 +0000)]
Move some assertion checks so they can do more complete checking.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69643
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Dan Gohman [Tue, 21 Apr 2009 00:47:46 +0000 (00:47 +0000)]
Convert ScalarEvolution to use raw_ostream instead of OStream.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69640
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Devang Patel [Tue, 21 Apr 2009 00:08:56 +0000 (00:08 +0000)]
Fix Visual Studio 2008 build failure.
Patch by Marius Wachtler
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69637
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Dan Gohman [Mon, 20 Apr 2009 22:54:34 +0000 (22:54 +0000)]
Make X86's copyRegToReg able to handle copies to and from subclasses.
This makes the extra copyRegToReg calls in ScheduleDAGSDNodesEmit.cpp
unnecessary. Derived from a patch by Jakob Stoklund Olesen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69635
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Dan Gohman [Mon, 20 Apr 2009 22:51:43 +0000 (22:51 +0000)]
Simplify this code. getConstant knows how to make
broadcasted vector constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69634
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Evan Cheng [Mon, 20 Apr 2009 22:49:59 +0000 (22:49 +0000)]
No, we are not avoiding -O3, just -fstrict-aliasing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69633
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Dale Johannesen [Mon, 20 Apr 2009 22:19:33 +0000 (22:19 +0000)]
Adjust loop size estimate for full unrolling;
GEP's don't usually become instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69631
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Evan Cheng [Mon, 20 Apr 2009 22:16:40 +0000 (22:16 +0000)]
One Mac OS X, just build with -O3 but without -fstrict-aliasing (which is kinda broken).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69630
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Daniel Dunbar [Mon, 20 Apr 2009 20:50:13 +0000 (20:50 +0000)]
Make Unix.h:MakeErrMsg separate the prefix and errno string, so we get:
clang: error: unable to make temporary file: /etc/cc: can't make
unique filename: Permission denied
instead of
clang: error: unable to make temporary file: /etc/cc: can't make
unique filenamePermission denied
for example.
Also, audited the uses of MakeErrMsg to make the prefix strings
consistent (not end with newline/punctuation/space/": ").
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69626
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Daniel Dunbar [Mon, 20 Apr 2009 20:34:38 +0000 (20:34 +0000)]
Remove unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69624
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Bob Wilson [Mon, 20 Apr 2009 18:36:57 +0000 (18:36 +0000)]
Move duplicated AddLiveIn function from X86 and ARM backends to be a method
in the MachineFunction class, renaming it to addLiveIn for consistency with
the same method in MachineBasicBlock. Thanks for Anton for suggesting this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69615
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Devang Patel [Mon, 20 Apr 2009 18:07:22 +0000 (18:07 +0000)]
Match C backend only if it explicitly requested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69613
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Tanya Lattner [Mon, 20 Apr 2009 17:48:16 +0000 (17:48 +0000)]
Remove clang since its conditionally there already.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69610
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Bob Wilson [Mon, 20 Apr 2009 17:27:09 +0000 (17:27 +0000)]
Revise my previous change 68996 as suggested by Duncan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69607
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Evan Cheng [Mon, 20 Apr 2009 17:23:48 +0000 (17:23 +0000)]
- Remove an arbitrary spill weight tweak that should not have been there.
- Find more reloads from SS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69606
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Sanjiv Gupta [Mon, 20 Apr 2009 16:59:35 +0000 (16:59 +0000)]
Emit the auto variables of a function into a different section than parameters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69605
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Dan Gohman [Mon, 20 Apr 2009 16:26:25 +0000 (16:26 +0000)]
It's not necessary for PrintModulePass to flush the output streams
now that errs() is properly non-buffered.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69602
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Dan Gohman [Mon, 20 Apr 2009 16:19:02 +0000 (16:19 +0000)]
Use .empty() instead of .size().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69599
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Dan Gohman [Mon, 20 Apr 2009 16:10:33 +0000 (16:10 +0000)]
Don't discard an AssemblyAnnotationWriter when writing GlobalValues,
which include Functions, where it can be quite useful to use an
AssemblyAnnotationWriter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69598
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Duncan Sands [Mon, 20 Apr 2009 16:03:21 +0000 (16:03 +0000)]
These bitfields were being miscompiled on some
64 bit platforms when building with optimization.
So replace them by a hand-coded implementation.
This fixes PR3822.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69597
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Dan Gohman [Mon, 20 Apr 2009 15:55:38 +0000 (15:55 +0000)]
Implement operator<<(raw_ostream &OS, const Type &T).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69596
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Evan Cheng [Mon, 20 Apr 2009 08:01:12 +0000 (08:01 +0000)]
Added a linearscan register allocation optimization. When the register allocator spill an interval with multiple uses in the same basic block, it creates a different virtual register for each of the reloads. e.g.
%reg1498<def> = MOV32rm %reg1024, 1, %reg0, 12, %reg0, Mem:LD(4,4) [sunkaddr39 + 0]
%reg1506<def> = MOV32rm %reg1024, 1, %reg0, 8, %reg0, Mem:LD(4,4) [sunkaddr42 + 0]
%reg1486<def> = MOV32rr %reg1506
%reg1486<def> = XOR32rr %reg1486, %reg1498, %EFLAGS<imp-def,dead>
%reg1510<def> = MOV32rm %reg1024, 1, %reg0, 4, %reg0, Mem:LD(4,4) [sunkaddr45 + 0]
=>
%reg1498<def> = MOV32rm %reg2036, 1, %reg0, 12, %reg0, Mem:LD(4,4) [sunkaddr39 + 0]
%reg1506<def> = MOV32rm %reg2037, 1, %reg0, 8, %reg0, Mem:LD(4,4) [sunkaddr42 + 0]
%reg1486<def> = MOV32rr %reg1506
%reg1486<def> = XOR32rr %reg1486, %reg1498, %EFLAGS<imp-def,dead>
%reg1510<def> = MOV32rm %reg2038, 1, %reg0, 4, %reg0, Mem:LD(4,4) [sunkaddr45 + 0]
From linearscan's point of view, each of reg2036, 2037, and 2038 are separate registers, each is "killed" after a single use. The reloaded register is available and it's often clobbered right away. e.g. In thise case reg1498 is allocated EAX while reg2036 is allocated RAX. This means we end up with multiple reloads from the same stack slot in the same basic block.
Now linearscan recognize there are other reloads from same SS in the same BB. So it'll "downgrade" RAX (and its aliases) after reg2036 is allocated until the next reload (reg2037) is done. This greatly increase the likihood reloads from SS are reused.
This speeds up sha1 from OpenSSL by 5.8%. It is also an across the board win for SPEC2000 and 2006.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69585
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Douglas Gregor [Mon, 20 Apr 2009 07:34:17 +0000 (07:34 +0000)]
Make all raw_ostreams support the tell() function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69583
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Sanjiv Gupta [Mon, 20 Apr 2009 06:05:54 +0000 (06:05 +0000)]
Before trying to introduce/eliminate cast/ext/trunc to make indices type as
pointer type, make sure that the pointer size is a valid sequential index type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69574
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Nick Lewycky [Sun, 19 Apr 2009 18:32:03 +0000 (18:32 +0000)]
Use an AssertingVH to detect the case where the Function was deleted but
freeMachineCodeForFunction was never called.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69531
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Nick Lewycky [Sun, 19 Apr 2009 18:20:21 +0000 (18:20 +0000)]
Fix missing text in doxygen documentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69529
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Duncan Sands [Sun, 19 Apr 2009 06:40:30 +0000 (06:40 +0000)]
Now that BUILD_VECTOR operands are allowed to be
bigger than the vector element type, turn checking
of the operand type back on again, appropriately
adjusted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69516
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Duncan Sands [Sun, 19 Apr 2009 06:23:05 +0000 (06:23 +0000)]
Remove the SimpleTy enumerated type field from the MVT
value type union: this field was causing problems for
some compilers on 64 bit systems, presumably because
SimpleTy is 32 bits wide while the other fields are
64 bits wide.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69515
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Mikhail Glushenkov [Sun, 19 Apr 2009 00:22:35 +0000 (00:22 +0000)]
Add some assertions.
Fixes segfaults in some corner cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69494
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Bill Wendling [Sat, 18 Apr 2009 21:45:27 +0000 (21:45 +0000)]
Revert 69474 and 69475. They are causing failures during a bootstrap on Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69478
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Mikhail Glushenkov [Sat, 18 Apr 2009 20:55:55 +0000 (20:55 +0000)]
Reconfigure.
Turns out that doing this by hand is easier than using autoreconf:-).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69475
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Mikhail Glushenkov [Sat, 18 Apr 2009 20:55:28 +0000 (20:55 +0000)]
Add a configure check for llvm-gcc (reapply).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69474
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Chris Lattner [Sat, 18 Apr 2009 20:49:22 +0000 (20:49 +0000)]
testcase for PR3898
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69473
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Chris Lattner [Sat, 18 Apr 2009 20:48:07 +0000 (20:48 +0000)]
Fix PR3898, which manifests as failures on are an Xcore,
patch by Jakob Stoklund Olesen!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69472
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