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Author SHA1 Message Date
Dan Gohman
b0604c0b83 Use iterators instead of indices in a few more places. 
llvm-svn: 111143
 2010-08-16 16:27:53 +00:00
Dan Gohman
64c713c605 Micro-optimize SCEVConstant comparison. 
llvm-svn: 111142
 2010-08-16 16:25:35 +00:00
Dan Gohman
6d808db278 Move SCEVNAryExpr's virtual member functions out of line, and convert 
them to iterators.

llvm-svn: 111140
 2010-08-16 16:21:27 +00:00
Dan Gohman
d55de2457e Use iterators instead of indices in simple cases. 
llvm-svn: 111138
 2010-08-16 16:16:11 +00:00
Dan Gohman
daec40b96d Avoid gratuitous inefficiency in ifndef NDEBUG code. 
llvm-svn: 111137
 2010-08-16 16:13:54 +00:00
Dan Gohman
345dc8add7 Make one getAddExpr call when analyzing a+b+c+d+e+... instead of one 
for each add instruction. Ditto for Mul.

llvm-svn: 111136
 2010-08-16 16:03:49 +00:00
Dan Gohman
fec602e7c5 Delete an unused function. 
llvm-svn: 111135
 2010-08-16 15:57:14 +00:00
Dan Gohman
7900e1ace3 Instead of having CollectSubexpr's categorize operands as interesting or 
uninteresting, just put all the operands on one list and make
GenerateReassociations make the decision about what's interesting.
This is simpler, and it avoids an extra ScalarEvolution::getAddExpr call.

llvm-svn: 111133
 2010-08-16 15:50:00 +00:00
Dan Gohman
38d11cdfe0 Put add operands in ScalarEvolution-canonical order, when convenient. 
This isn't necessary, because ScalarEvolution sorts them anyway,
but it's tidier this way.

llvm-svn: 111132
 2010-08-16 15:39:27 +00:00
Dan Gohman
3921a903bb Specialize FoldingSetTrait<SCEV>, providing implementations of node 
comparison and hash computation which don't require constructing
temporary ID values.

llvm-svn: 111131
 2010-08-16 15:31:45 +00:00
Dan Gohman
06963ff7c4 Add hooks to FoldingSetTrait to allow specializations to provide 
implementations of equality comparison and hash computation. This
can be used to optimize node lookup by avoiding creating lots of
temporary ID values just for hashing and comparison purposes.

llvm-svn: 111130
 2010-08-16 15:30:39 +00:00
Dan Gohman
d4e78e0121 Tidy up whitespace in comments. 
llvm-svn: 111129
 2010-08-16 15:04:39 +00:00
Dan Gohman
d7f6f04d71 Constify FoldingSetNodeIDRef's Data. 
llvm-svn: 111128
 2010-08-16 15:03:24 +00:00
Dan Gohman
4446294688 Reverse the order of GetNodeProfile's arguments, for consistency 
with FoldingSetTrait::Profile.

llvm-svn: 111127
 2010-08-16 14:53:42 +00:00
Dan Gohman
8ba122de76 Fix indentation in example code in a comment. 
llvm-svn: 111125
 2010-08-16 14:45:36 +00:00
Dan Gohman
80b2503100 Avoid #include <ScalarEvolution.h> in LoopSimplify.cpp, which doesn't 
actually use ScalarEvolution.

llvm-svn: 111124
 2010-08-16 14:44:03 +00:00
Dan Gohman
9178d0792f Instead, teach SimplifyCFG to trim non-address-taken blocks from 
indirectbr destination lists.

llvm-svn: 111122
 2010-08-16 14:41:14 +00:00
Dan Gohman
8ed4d1646e Revert r111058, the lint check for indirectbr successors that aren't 
address-taken. This can occur normally, if the code which took the
address got DCEd.

llvm-svn: 111121
 2010-08-16 14:39:19 +00:00
Benjamin Kramer
0224854fdc Test expects SSE, give him SSE. 
llvm-svn: 111115
 2010-08-15 23:32:03 +00:00
Oscar Fuentes
f5fe003dce Updated LLVMLibDeps.cmake 
llvm-svn: 111112
 2010-08-15 22:14:42 +00:00
Oscar Fuentes
68565e313e CMake: Improved COMMENT on a custom command 
llvm-svn: 111111
 2010-08-15 22:14:36 +00:00
Benjamin Kramer
3116e6f58d Restore arch on these test, they fail on arm. 
llvm-svn: 111109
 2010-08-15 20:42:56 +00:00
Dale Johannesen
6e5cf0f5b6 Mark as XFAIL on darwin 8. PR 7886. 
llvm-svn: 111108
 2010-08-15 19:40:29 +00:00
Oscar Fuentes
ee14ce612a Updated the GenLibDeps -> LLVMLibDeps.cmake transformation example. 
llvm-svn: 111104
 2010-08-15 15:08:27 +00:00
Argyrios Kyrtzidis
75b69c1de3 Revert r111082. No warnings for this common pattern. 
llvm-svn: 111102
 2010-08-15 10:27:23 +00:00
Mikhail Glushenkov
de1e03e890 Update tests. 
llvm-svn: 111096
 2010-08-15 07:07:24 +00:00
Mikhail Glushenkov
486898b881 Regenerate. 
llvm-svn: 111095
 2010-08-15 07:07:17 +00:00
Mikhail Glushenkov
10302168ea llvmc: remove dynamic plugins. 
llvm-svn: 111094
 2010-08-15 07:07:12 +00:00
Eric Christopher
1470fe415c Rework how the non-sse2 memory barrier is lowered so that the 
encoding is correct for the built-in assembler.

Based on a patch from Chris.

llvm-svn: 111083
 2010-08-14 21:51:50 +00:00
Argyrios Kyrtzidis
70b248e3ac Add ATTRIBUTE_UNUSED to methods that are not supposed to be used. 
llvm-svn: 111082
 2010-08-14 21:35:10 +00:00
Chris Lattner
8426971169 improve indentation 
llvm-svn: 111073
 2010-08-14 17:26:09 +00:00
Bob Wilson
b1eb015fc8 T2I_rbin_irs rr variant is for disassembly only, so don't provide a pattern. 
llvm-svn: 111068
 2010-08-14 03:18:29 +00:00
Ted Kremenek
8091488511 Update CMake build. 
llvm-svn: 111063
 2010-08-14 01:55:09 +00:00
Dan Gohman
afb3db46d2 LoopSimplify shouldn't split loop backedges that use indirectbr. PR7867. 
llvm-svn: 111061
 2010-08-14 00:43:09 +00:00
Dan Gohman
d04a608a73 Teach SimplifyCFG how to simplify indirectbr instructions. 
- Eliminate redundant successors.
 - Convert an indirectbr with one successor into a direct branch.

Also, generalize SimplifyCFG to be able to be run on a function entry block.
It knows quite a few simplifications which are applicable to the entry
block, and it only needs a few checks to avoid trouble with the entry block.

llvm-svn: 111060
 2010-08-14 00:29:42 +00:00
Jim Grosbach
a4d3174cba Add a local stack object block allocation pass. This is still an 
experimental pass that allocates locals relative to one another before
register allocation and then assigns them to actual stack slots as a block
later in PEI. This will eventually allow targets with limited index offset
range to allocate additional base registers (not just FP and SP) to
more efficiently reference locals, as well as handle situations where
locals cannot be referenced via SP or FP at all (dynamic stack realignment
together with variable sized objects, for example). It's currently
incomplete and almost certainly buggy. Work in progress.

Disabled by default and gated via the -enable-local-stack-alloc command
line option.

rdar://8277890

llvm-svn: 111059
 2010-08-14 00:15:52 +00:00
Dan Gohman
422c164d8d Add a lint check for an indirectbr destination which has not 
had its address taken.

llvm-svn: 111058
 2010-08-13 23:56:28 +00:00
Bob Wilson
92bf5a7425 Add a Thumb2 t2RSBrr instruction for disassembly only. 
This fixes another part of PR7792.

llvm-svn: 111057
 2010-08-13 23:24:25 +00:00
Jakob Stoklund Olesen
44b77ea344 Clean up the Spiller.h interface. 
The earliestStart argument is entirely specific to linear scan allocation, and
can be easily calculated by RegAllocLinearScan.

Replace std::vector with SmallVector.

llvm-svn: 111055
 2010-08-13 22:56:53 +00:00
Bob Wilson
ca672ee828 Temporarily disable tail calls on ARM to work around some linker problems. 
llvm-svn: 111050
 2010-08-13 22:43:33 +00:00
Bob Wilson
0883c6aae3 Move the Thumb2 SSAT and USAT optional shift operator out of the 
instruction opcode.  This fixes part of PR7792.

llvm-svn: 111047
 2010-08-13 21:48:10 +00:00
Dan Gohman
076597a026 Various optimizations. Don't compare two loops' depths 
when they are the same loop. Don't compare two instructions'
loop depths when they are in the same block.

llvm-svn: 111045
 2010-08-13 21:24:58 +00:00
Jakob Stoklund Olesen
70604cb116 Implement splitting inside a single block. 
When a live range is contained a single block, we can split it around
instruction clusters. The current approach is very primitive, splitting before
and after the largest gap between uses.

llvm-svn: 111043
 2010-08-13 21:18:48 +00:00
Dan Gohman
3e7c2a2040 Fix LSR's ExtractImmediate and ExtractSymbol to avoid calling 
ScalarEvolution::getAddExpr, which can be pretty expensive, when nothing
has changed, which is pretty common.

llvm-svn: 111042
 2010-08-13 21:17:19 +00:00
Bruno Cardoso Lopes
1eaa601d84 Add comments to some pattern fragments in x86 
llvm-svn: 111041
 2010-08-13 20:39:01 +00:00
Jim Grosbach
b1e8749e37 tidy up comments 
llvm-svn: 111040
 2010-08-13 20:32:35 +00:00
Dan Gohman
ecb279a1c2 When testing whether one loop contains another, test this directly 
rather than testing whether the loop contains the other's header.

llvm-svn: 111039
 2010-08-13 20:23:25 +00:00
Dan Gohman
02de74d4dc Add a const. 
llvm-svn: 111038
 2010-08-13 20:17:27 +00:00
Dan Gohman
3650d2058f When creating a symmetric SCEV with a constant operand, put 
the constant operand on the left, as that's where ScalarEvolution
will end up canonicalizing to.

llvm-svn: 111037
 2010-08-13 20:17:14 +00:00
Dan Gohman
de171ff360 An add recurrence is loop-invariant in any loop inside of its 
associated loop. This avoids potentially expensive traversals
of the add recurrence's operands.

llvm-svn: 111034
 2010-08-13 20:11:39 +00:00