Chris Lattner
61d594690a
Fix a huge performance problem in reassociate by introducing a
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rank map cache for instruction ranks
llvm-svn: 5030
2002-12-15 03:56:00 +00:00
Chris Lattner
18fe81719d
Minor changes:
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* Reword comment to make more clear
* Don't print out BB's after modification made
* Don't delete and new an instruction when we need to move something, just move it.
llvm-svn: 5029
2002-12-15 03:49:50 +00:00
Chris Lattner
be53e88459
Remove dead code
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llvm-svn: 4952
2002-12-07 18:42:13 +00:00
Chris Lattner
6c9d57c590
Fix bug: 2002-12-05-MissedConstProp.ll pointed out by Casey Carter
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llvm-svn: 4935
2002-12-05 22:41:53 +00:00
Chris Lattner
b5027095e5
- Eliminated the deferred symbol table stuff in Module & Function, it really
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wasn't an optimization and it was causing lots of bugs.
llvm-svn: 4779
2002-11-20 18:36:02 +00:00
Chris Lattner
0141841bc4
Fix warning
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llvm-svn: 4649
2002-11-09 00:49:43 +00:00
Chris Lattner
f03f32d2e8
Fix spelling error
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llvm-svn: 4645
2002-11-08 23:18:37 +00:00
Chris Lattner
aaf2fa34a5
Instcombine this away:
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%A = getelementptr [4 x int]* %M, long 0, long 0
%B = getelementptr int* %A, long 2
llvm-svn: 4536
2002-11-04 16:43:32 +00:00
Chris Lattner
ecddf3396f
Add a transformation to turn:
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malloc Ty, C
int
malloc [C x Ty], 1
llvm-svn: 4534
2002-11-04 16:18:53 +00:00
Chris Lattner
b9fa84c1ed
Make sure to _delete_ memory allocated by worklists
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llvm-svn: 4523
2002-11-04 02:54:22 +00:00
Chris Lattner
b913f4e785
Fixes to the reassociate pass to make it respect dominance properties
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Huge thanks go to Casey Carter for writing this fix, reassociate is now
reoperational!
llvm-svn: 4471
2002-10-31 17:12:59 +00:00
Chris Lattner
1ec9725ef8
BreakCriticalEdges should update dominance frontier information as well as
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other dominance stuff. Patch contributed by Casey Carter
llvm-svn: 4457
2002-10-31 02:44:36 +00:00
Misha Brukman
c9c721edf0
Fix spelling of `propagate'.
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llvm-svn: 4423
2002-10-29 23:06:16 +00:00
Chris Lattner
b565d3ac5b
- Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG to
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setPreservesCFG to be less confusing.
llvm-svn: 4255
2002-10-21 20:00:28 +00:00
Chris Lattner
d68e6d1718
- Fix bug: cee/2002-10-07-NoImmediateDominator.ll
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llvm-svn: 4081
2002-10-08 21:53:51 +00:00
Chris Lattner
40df2d9d4c
- Checkin LARGE number of Changes to CEE pass that will make it much more
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powerful, but that are largely disabled. The basic idea here is that it
is trying to forward branches across basic blocks that have PHI nodes in
it, which are crucial to be able to handle cases like whet.ll.
Unfortunately we are not updating SSA correctly, causing sim.c to die, and I
don't have time to fix the regression now, so I must disable the
functionality.
llvm-svn: 4077
2002-10-08 21:34:15 +00:00
Chris Lattner
3cf20c3f14
Expose isCriticalEdge & SplitCriticalEdge methods from crit-edges pass
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llvm-svn: 4075
2002-10-08 21:06:27 +00:00
Chris Lattner
b32252aa71
It is illegal for PHI nodes to have zero values, delete the code to handle them
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llvm-svn: 4071
2002-10-08 17:07:39 +00:00
Chris Lattner
55c7ae3cdc
Fold ashr -1, X into -1
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llvm-svn: 4070
2002-10-08 16:16:40 +00:00
Chris Lattner
7cf9f6f4b1
Updates to work with recent Statistic's changes:
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* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
* Broke constructor to take two const char * arguments instead of one, so
that indendation can be taken care of automatically.
* Sort the list by pass name when printing
* Make sure to print all statistics as a group, instead of randomly when
the statistics dtors are called.
* Updated ProgrammersManual with new semantics.
llvm-svn: 4002
2002-10-01 22:38:41 +00:00
Chris Lattner
61e8de1c61
Fix bug in LICM that caused the previous big win. :(
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llvm-svn: 3980
2002-09-29 22:26:07 +00:00
Chris Lattner
ef0e95bb42
Hoist the contents of Loops in depth first order in the dominator tree,
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rather than in random order. This causes LICM to be DRAMATICALLY more
effective. For example, on bzip2.c, it is able to hoist 302 loads and
2380 total instructions, as opposed to 44/338 before. This obviously
makes other transformations much more powerful as well!
llvm-svn: 3978
2002-09-29 21:46:09 +00:00
Chris Lattner
b731880895
Fix major bugs in dominator set & tree information updating
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llvm-svn: 3975
2002-09-29 21:41:38 +00:00
Chris Lattner
0bbb8f6e06
- Further cleanups of LICM pass, remove extra work from previous implementation
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- Do not clone instructions then insert clone outside of loop. Just move them.
llvm-svn: 3951
2002-09-26 19:40:25 +00:00
Chris Lattner
0c66734ac5
Improve comments, doxygenize more
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llvm-svn: 3950
2002-09-26 16:52:07 +00:00
Chris Lattner
21eb78d59d
Clean up LICM significantly now that it is guaranteed to have loop preheaders
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llvm-svn: 3947
2002-09-26 16:38:03 +00:00
Chris Lattner
9cdbd428b0
Change pass name to something sane
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llvm-svn: 3946
2002-09-26 16:37:37 +00:00
Chris Lattner
fe9fba6f5b
Loop invariant code motion now depends on the LoopPreheader pass. Dead code
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has not yet been removed.
llvm-svn: 3945
2002-09-26 16:19:31 +00:00
Chris Lattner
f9676d651d
- Cleanup break-crit-edges pass by making SplitCriticalEdge a member method.
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- break-crit-edges pass does not invalidate loop-preheader pass.
llvm-svn: 3944
2002-09-26 16:18:51 +00:00
Chris Lattner
e5996b4c88
Checkin new loop-preheader insertion pass.
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llvm-svn: 3942
2002-09-26 16:17:31 +00:00
Chris Lattner
7ab2bba3d3
Change LowerAllocations pass to 'require' TargetData instead of it being
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passed in.
llvm-svn: 3929
2002-09-25 23:47:47 +00:00
Chris Lattner
7fafece8e0
Eliminate extraneous #include
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llvm-svn: 3916
2002-09-24 21:18:40 +00:00
Chris Lattner
25ba5ac7ce
- Do not expose Critical Edge breaking mechanics outside the BCE pass, thus
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removing it from Transforms/Local.h and from Transforms/Utils/*
llvm-svn: 3910
2002-09-24 15:51:56 +00:00
Chris Lattner
1014aae962
Correlated Exprs pass now requires BCE pass instead of doing it manually
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llvm-svn: 3908
2002-09-24 15:43:56 +00:00
Chris Lattner
49588769e0
- Expose passinfo from BreakCriticalEdges pass so that it may be "Required"
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by other passes. Make BCE pass be in anonymous namespace now.
llvm-svn: 3907
2002-09-24 15:43:12 +00:00
Chris Lattner
e62cdff96c
Add new BreakCriticalEdges pass
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llvm-svn: 3903
2002-09-24 00:08:39 +00:00
Chris Lattner
b6c408778a
Optimize away cases like:
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%cast109 = cast uint %cast212 to short ; <short> [#uses=1]
%cast214 = cast short %cast109 to uint ; <uint> [#uses=1]
%cast215 = cast uint %cast214 to short ; <short> [#uses=1]
llvm-svn: 3897
2002-09-23 23:39:43 +00:00
Chris Lattner
2a53929c5d
* Fix bug: CorrelatedExprs/2002-09-23-PHIUpdateBug.ll
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* Make sure "Changed" is updated correctly
llvm-svn: 3891
2002-09-23 20:06:22 +00:00
Chris Lattner
5ccb21f41d
Fix bug: test/Regression/Transforms/InstCombine/2002-09-17-GetElementPtrCrash.ll
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Thanks to Casey for finding it!
llvm-svn: 3783
2002-09-17 21:05:42 +00:00
Vikram S. Adve
4bcec53ed7
Extract most of the transformation into an externally accessible
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function -- DecomposeArrayRef(GetElementPtrInst* GEP) -- that can
be invoked on a single instruction at a time.
llvm-svn: 3755
2002-09-16 16:40:07 +00:00
Misha Brukman
2e598f0092
Function.h is unnecessary when Module.h is included.
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llvm-svn: 3716
2002-09-14 03:04:02 +00:00
Chris Lattner
fb017cb38c
- Change getelementptr instruction to use long indexes instead of uint
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indexes for sequential types.
llvm-svn: 3682
2002-09-11 01:21:33 +00:00
Chris Lattner
5f4b79edaf
Fix the last of the silly bugs I just introduced. :(
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llvm-svn: 3674
2002-09-10 23:46:10 +00:00
Chris Lattner
5143d4a3b3
Add cannonicalization of shl X, 1 -> add X, X
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llvm-svn: 3671
2002-09-10 23:04:09 +00:00
Chris Lattner
37c3a1d80c
Clean up code due to auto-insert constructors
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llvm-svn: 3665
2002-09-10 22:38:47 +00:00
Chris Lattner
da9702a8a1
Simplify code (somtimes dramatically), by using the new "auto-insert" feature
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of instruction constructors.
llvm-svn: 3656
2002-09-10 17:04:02 +00:00
Chris Lattner
7787814c22
* Clean up code a little bit
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* Fix bug: test/Regression/Transforms/IndVarsSimplify/2002-09-09-PointerIndVar.ll
llvm-svn: 3644
2002-09-10 05:24:05 +00:00
Chris Lattner
4f5abce7f6
Hack unneccesary now that shifts of pointers are no longer legal!
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llvm-svn: 3640
2002-09-10 03:50:54 +00:00
Chris Lattner
c1de581f8e
Fix Bug: test/Regression/Transforms/InstCombine/2002-09-08-PointerShiftBug.ll
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llvm-svn: 3626
2002-09-08 21:39:07 +00:00
Chris Lattner
c30029172a
Minor simplification
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llvm-svn: 3619
2002-09-08 18:55:04 +00:00