Devang Patel
7c6c55db4d
No need to hardcode SmallVector size.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41228 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-21 16:39:43 +00:00
Devang Patel
b7211a2ce1
Use SmallVector instead of std::vector.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41207 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-21 00:31:24 +00:00
Anton Korobeynikov
96fea337d2
- Use correct header for SCEV inside LoopPass.cpp
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- Move SCEVExpander::expand() out-of-line workarounding possible toolchain bug
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41197 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-20 21:17:26 +00:00
Nick Lewycky
ab3c9b1f95
Simplify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41167 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-18 14:46:55 +00:00
Devang Patel
96bf524b53
When one branch of condition is eliminated then head of the other
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branch is not necessary immediate dominators of merge blcok in all cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41144 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-17 21:59:16 +00:00
Owen Anderson
4d13de4e3b
Cache non-local memory dependence analysis. This is a significant compile
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time performance win in most cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41126 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-16 21:27:05 +00:00
Devang Patel
4d29ddfa06
No need to use iterator to erase basic block.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41074 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 16:53:24 +00:00
Devang Patel
441c5ee6cf
Add methods to erase basic block entry.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41052 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 22:10:29 +00:00
Reid Spencer
276222a5ae
Change casts from old style to new style. This helps document the details
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better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41033 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-12 08:12:35 +00:00
Owen Anderson
9528f11481
Make NonLocal and None const in the right way. :-)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40961 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 04:42:44 +00:00
Owen Anderson
49609a5ddf
Add one more comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40949 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:54:33 +00:00
Owen Anderson
179463c0d4
Cleanup and comment-ize the memdep header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40948 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:53:20 +00:00
Owen Anderson
8cad423d94
Change the None and NonLocal markers in memdep to be const.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40946 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:39:39 +00:00
Chris Lattner
3e089ae0b8
reimplement dfs number computation to be significantly faster. This speeds up
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natural loop canonicalization (which does many cfg xforms) by 4.3x, for
example. This also fixes a bug in postdom dfnumber computation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40920 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 05:51:24 +00:00
Owen Anderson
371d68958f
Get rid of unnecessary #include.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40885 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 00:38:16 +00:00
Owen Anderson
dbbe816757
Clean up a bunch of caching stuff in memdep. This reduces the time to run GVN
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on 403.gcc from ~15s to ~10s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40884 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 00:33:45 +00:00
Chris Lattner
c385ae6ff5
Various random cleanups, add two accessors to DomTreeNode: getDFSNumIn/getDFSNumOut
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40856 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 06:15:43 +00:00
Chris Lattner
e93e311981
Switch the internal "Info" map from an std::map to a DenseMap. This
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speeds up idom by about 45% and postidom by about 33%.
Some extra precautions must be taken not to invalidate densemap iterators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40827 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 00:02:00 +00:00
Chris Lattner
0a5f83c22c
switch the DomTreeNodes and IDoms maps in idom/postidom to a
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DenseMap instead of an std::map. This speeds up postdomtree
by about 25% and domtree by about 23%. It also speeds up clients,
for example, domfrontier by 11%, mem2reg by 4% and ADCE by 6%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40826 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 23:48:07 +00:00
Owen Anderson
9066020993
Make non-local memdep not be recursive, and fix a bug on 403.gcc that this exposed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40692 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-01 22:01:54 +00:00
Dan Gohman
c2bbfc18e9
More explicit keywords.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40673 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-01 15:32:29 +00:00
David Greene
df464195fe
Fix GLIBCXX_DEBUG error owing to dereference of end iterator. There's
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no guarantee that an instruction returned by getDependency exists in
the maps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40647 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 20:01:27 +00:00
Devang Patel
c7e49c08c2
Introduce Simple Analysis interface for loop passes.
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Right now, this interface provides hooks for only to operations, 1) clone basic block 2) delete value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40625 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 08:00:57 +00:00
Owen Anderson
02d6852a1c
Forgot to include this file in my last commit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40496 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 21:30:15 +00:00
Owen Anderson
0cd320362e
Add basic support for performing whole-function RLE.
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Note: This has not yet been thoroughly tested. Use at your own risk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40489 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 19:57:03 +00:00
Owen Anderson
4beedbd006
Add initial support for non-local memory dependence analysis.
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NOTE: This has only been cursorily tested. Expected improvements soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40476 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24 21:52:37 +00:00
Devang Patel
58e0ef1e90
Verify loop info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40062 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 18:02:32 +00:00
Owen Anderson
faac518ce0
Add support for walking up memory def chains, which enables finding many more
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dead stores on 400.perlbench.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39929 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 21:52:50 +00:00
Nick Lewycky
eefdebe002
Handle decrementing loops properly. Fixes PR1533.
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Always pass the constant as the second parameter to HowManyLessThans.
Remove obsolete "isSigned" parameter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39893 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 02:08:00 +00:00
Owen Anderson
5f32320797
Add support for finding the dependencies of call and invoke instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38497 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 17:59:22 +00:00
Owen Anderson
6b278fc786
Fix a bunch of things from Chris' feedback
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38493 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 17:08:11 +00:00
Dan Gohman
9a6ae965d6
Move the APInt form of SCEVUnknown::getIntegerSCEV to SCEVConstant::get, and
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use SCEVConstant::get instead of SCEVUnknown::get when constructing a SCEV
for a ConstantInt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 15:25:17 +00:00
Owen Anderson
78e02f78ce
A first stab at memory dependence analysis. This is an interface on top of
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alias analysis, adding caching and lazy computation of queries. This will
be used in planned improvements to memory access optimizations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37958 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 23:14:35 +00:00
Gabor Greif
a99be51bf5
Here is the bulk of the sanitizing.
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Almost all occurrences of "bytecode" in the sources have been eliminated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37913 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-05 17:07:56 +00:00
Devang Patel
bef204db6f
Remove unused method - getIDomBlock().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37865 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-04 01:11:19 +00:00
Devang Patel
dc42bc3baf
Fix typo in assertion check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37864 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-04 01:05:22 +00:00
Dan Gohman
a6900c7ad9
Add explicit keywords.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37839 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-02 14:53:37 +00:00
Devang Patel
1a957d563f
Add loop info verification mechanism.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37822 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-29 23:13:42 +00:00
Devang Patel
ef6ba18a4c
Remove unnecessary comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37774 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-28 02:11:54 +00:00
Devang Patel
dc3a207e78
Handle the case when block dominates itself.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37773 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-28 02:07:08 +00:00
Devang Patel
1ceda1d63e
Remove ETForest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37765 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-27 20:53:52 +00:00
Devang Patel
0e7f728ad1
Move code to update dominator information after basic block is split
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from LoopSimplify.cpp to Dominator.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37689 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 17:23:45 +00:00
Dan Gohman
5cec4db6ae
Rename ScalarEvolution::deleteInstructionFromRecords to
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deleteValueFromRecords and loosen the types to all it to accept
Value* instead of just Instruction*, since this is what
ScalarEvolution uses internally anyway. This allows more flexibility
for future uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37657 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 14:28:31 +00:00
Dan Gohman
d19534add9
Add a SCEV class and supporting code for sign-extend expressions.
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This created an ambiguity for expandInTy to decide when to use
sign-extension or zero-extension, but it turns out that most of its callers
don't actually need a type conversion, now that LLVM types don't have
explicit signedness. Drop expandInTy in favor of plain expand, and change
the few places that actually need a type conversion to do it themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37591 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 14:38:12 +00:00
Devang Patel
6857e366f5
Protect updateDFSNumbers()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37560 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:30:56 +00:00
Devang Patel
9c7ee6b19f
Make DFS number manipulation methods private.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37553 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 05:49:31 +00:00
Devang Patel
4d42dea253
Break DominatorTree from ETNode.
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Remove unused PostETForest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37551 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:54:38 +00:00
Devang Patel
3726b82a55
Maintain DFS number in DomTreeNode itself.
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This means now ETNodes are not useful anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37546 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:14:41 +00:00
Devang Patel
fe7d4e50b8
Add and use DominatorTreeBase::findNearestCommonDominator().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37545 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-11 23:31:22 +00:00
Devang Patel
b5ef06c509
Fix spelling.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37522 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 17:59:02 +00:00