7dae8efcf2
Use cached information that has already been computed to make clean() simpler and faster. This is a small speedup on most cases.
...
llvm-svn: 37761
2007-06-27 17:38:29 +00:00
0eb265729a
Fold a lot of code into two cases: binary instructions and ternary instructions.
...
This saves many lines of code duplication. No functionality change.
llvm-svn: 37759
2007-06-27 17:03:03 +00:00
8d438858c8
Fix a bug.
...
llvm-svn: 37751
2007-06-27 09:50:26 +00:00
b6a39fcb21
Add support for performing GVNPRE on the three vector-specific operations.
...
llvm-svn: 37745
2007-06-27 04:10:46 +00:00
5477c54aa0
1. Correct some comments and clean up some dead code.
...
2. When calculating ANTIC_IN, only iterate the changed blocks. For most average
inputs this is a small speedup, but for cases with unusual CFGs, this can be a significant win.
llvm-svn: 37742
2007-06-26 23:29:41 +00:00
ea5c4bd51c
fix Transforms/Inline/2007-06-25-WeakInline.ll by not inlining functions
...
with weak linkage.
llvm-svn: 37723
2007-06-25 21:50:09 +00:00
43ca4b48f1
Use the built-in postorder iterators rather than computing a postorder walk by hand.
...
llvm-svn: 37721
2007-06-25 18:25:31 +00:00
191eb06352
1) Fix an issue with non-deterministic iteration order in phi_translate
...
2) Remove some maximal-set computing code that is no longer used.
3) Use a post-order CFG traversal to compute ANTIC_IN instead of a postdom traversal.
This causes the ANTIC_IN calculation to converge much faster. Thanks to Daniel Berlin for suggesting this.
With this patch, the time to optimize 403.gcc decreased from 17.5s to 7.5s, and Anton's huge
testcase decreased from 62 minutes to 38 seconds.
llvm-svn: 37714
2007-06-25 05:41:12 +00:00
8735f44104
Fix value ranges.
...
llvm-svn: 37713
2007-06-24 20:14:22 +00:00
7fb6da8e4d
Fix a silly mistake that was causing failures.
...
llvm-svn: 37712
2007-06-24 08:42:24 +00:00
0f986fdbfa
Remove tabs.
...
llvm-svn: 37710
2007-06-24 04:40:16 +00:00
26e25d340e
Remove use of ETForest. Also cleaned up issues around unreachable basic
...
blocks, and optimizing within one basic block.
llvm-svn: 37709
2007-06-24 04:36:20 +00:00
49409f6501
Rework topo_sort so eliminate some behavior that scaled terribly. This reduces the time to optimize 403.gcc from 18.2s to 17.5s,
...
and has an even larger effect on larger testcases.
llvm-svn: 37708
2007-06-22 21:31:16 +00:00
21a1131565
Perform fewer set insertions while calculating ANTIC_IN. This reduces the amount of time to optimize 403.gcc from 21.9s to 18.2s.
...
llvm-svn: 37707
2007-06-22 18:27:04 +00:00
92c7b22e1a
Remove some code that I was using for collecting performance information that should not have been committed.
...
llvm-svn: 37706
2007-06-22 17:04:40 +00:00
f6e21871ad
Avoid excessive calls to find_leader when calculating AVAIL_OUT. This reduces the time to optimize 403.gcc from 23.5s to 21.9s.
...
llvm-svn: 37702
2007-06-22 03:14:03 +00:00
d50a29d613
Reserve space in vectors before topologically sorting into them. This improves the time to optimize 403.gcc from 28s to 23.5s.
...
llvm-svn: 37699
2007-06-22 00:43:22 +00:00
28a2d449fa
Make a bunch of optimizations for compile time to GVNPRE, including smarter set unions, deferring blocks rather than computing maximal sets, and smarter use of sets. With these enhancements, the time to optimize 273.perlbmk goes from 5.3s to 2.7s.
...
llvm-svn: 37698
2007-06-22 00:20:30 +00:00
fb032b176b
Significantly improve the documentation of the instcombine divide/compare
...
transformation. Also, keep track of which end of the integer interval overflows
occur on. This fixes Transforms/InstCombine/2007-06-21-DivCompareMiscomp.ll
and rdar://5278853, a miscompilation of perl.
llvm-svn: 37692
2007-06-21 18:11:19 +00:00
2ff912bf33
Change lots of sets from std::set to SmallPtrSet. This reduces the time required to optimize 253.perlbmk from 10.9s to 5.3s.
...
llvm-svn: 37690
2007-06-21 17:57:53 +00:00
d5258a23a5
Move code to update dominator information after basic block is split
...
from LoopSimplify.cpp to Dominator.cpp
llvm-svn: 37689
2007-06-21 17:23:45 +00:00
27876a3ff9
Eliminate a redundant check. This speeds up optimization of 253.perlbmk from 13.5 seconds to 10.9 seconds.
...
llvm-svn: 37683
2007-06-21 01:59:05 +00:00
fd5683ad7a
Comment-ize the functions in GVNPRE.
...
llvm-svn: 37681
2007-06-21 00:19:05 +00:00
3bbec59e8b
refactor a bunch of code out of visitICmpInstWithInstAndIntCst into its own
...
routine.
llvm-svn: 37679
2007-06-20 23:46:26 +00:00
06c1e585c9
Split runOnFunction into many smaller functions. This make it easier to get accurate performance analysis of GVNPRE.
...
llvm-svn: 37678
2007-06-20 22:10:02 +00:00
b0714bb7bb
Make GVNPRE accurate report whether it modified the function or not.
...
llvm-svn: 37673
2007-06-20 18:30:20 +00:00
7b0fb44ca9
Get rid of an unneeded helper function.
...
llvm-svn: 37670
2007-06-20 00:43:33 +00:00
1ad2c10215
Use a DenseMap instead of an std::map for the value numbering. This reduces the time to optimize lencod on a PPC Debug build from ~300s to ~140s.
...
llvm-svn: 37668
2007-06-19 23:23:54 +00:00
2320d430bd
Make dependsOnInvoke much more specific in what it tests, which in turn make it much faster to run. This reduces the time to optimize lencondwith a debug build on PPC from ~450s to ~300s.
...
llvm-svn: 37667
2007-06-19 23:07:16 +00:00
c655839d71
Moved Inliner.h to include/llvm/Transforms/IPO/InlinerPass.h
...
llvm-svn: 37666
2007-06-19 22:31:52 +00:00
ab11b1c702
Inliner pass header file was moved.
...
llvm-svn: 37665
2007-06-19 22:29:50 +00:00
32f53bbd85
Rename ScalarEvolution::deleteInstructionFromRecords to
...
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.
llvm-svn: 37657
2007-06-19 14:28:31 +00:00
1370faf889
Handle constants in phi nodes properly. This fixes test/Transforms/GVNPRE/2007-06-18-ConstantInPhi.ll
...
llvm-svn: 37655
2007-06-19 07:35:36 +00:00
09a33a4f64
silence a bogus warning Duraid ran into.
...
llvm-svn: 37649
2007-06-19 05:43:49 +00:00
91c54950b3
Be careful to erase values from all of the appropriate sets when they're not needed anymore. This fixes a few more memory-related issues.
...
llvm-svn: 37647
2007-06-19 05:37:32 +00:00
b9cbaed623
Remember to clear the maximal sets between functions.
...
Thanks to Nicholas for valgrinding this.
llvm-svn: 37646
2007-06-19 04:32:55 +00:00
b56fba0c5a
Refactor GVNPRE to use a much smart method of uniquing value sets, and centralize a lot of the value numbering information. No functionality change.
...
llvm-svn: 37645
2007-06-19 03:31:41 +00:00
dd998e1913
Cache the results of dependsOnInvoke()
...
llvm-svn: 37622
2007-06-18 04:42:29 +00:00
f1c04e1ddb
Fix indentation.
...
llvm-svn: 37621
2007-06-18 04:31:21 +00:00
b364b413af
Don't perform an expensive check if it's not necessary.
...
llvm-svn: 37620
2007-06-18 04:30:44 +00:00
658f2c4881
Fix test/Transforms/GVNPRE/2007-06-15-InvokeInst.ll by ignoring all instructions that depend on invokes.
...
llvm-svn: 37610
2007-06-16 00:26:54 +00:00
203a035251
Use SCEVConstant::get instead of SCEVUnknown::get to create an
...
integer constant SCEV.
llvm-svn: 37596
2007-06-15 18:00:55 +00:00
acaed06827
Fix test/Transforms/GVNPRE/2007-06-15-Looping.ll
...
llvm-svn: 37595
2007-06-15 17:55:15 +00:00
cb9e09ad57
Add a SCEV class and supporting code for sign-extend expressions.
...
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.
llvm-svn: 37591
2007-06-15 14:38:12 +00:00
373389260f
Generalize many transforms to work on ~ of vectors in addition to ~ of
...
integer ops. This implements Transforms/InstCombine/and-or-not.ll
test3/test4, and finishes off PR1510
llvm-svn: 37589
2007-06-15 06:23:19 +00:00
481e28b1f5
Implement two xforms:
...
1. ~(~X | Y) === (X & ~Y)
2. (A|B) & ~(A&B) -> A^B
This allows us to transform ~(~(a|b) | (a&b)) -> a^b.
This implements PR1510 for scalar values.
llvm-svn: 37584
2007-06-15 05:58:24 +00:00
f14e5175ed
delete some obviously dead vector operations, which deletes a few thousand
...
operations from Duraids example.
llvm-svn: 37582
2007-06-15 05:26:55 +00:00
4036ad485f
Fix test/Transforms/GVNPRE/2007-06-12-PhiTranslate.ll
...
llvm-svn: 37564
2007-06-12 22:43:57 +00:00
4276984012
Refactor some code, and fix test/Transforms/GVNPRE/2007-06-12-NoExit.ll by being more careful when using
...
post-dominator information.
llvm-svn: 37556
2007-06-12 16:57:50 +00:00
edfec0b515
Sink CmpInst's to their uses to reduce register pressure.
...
llvm-svn: 37554
2007-06-12 16:50:17 +00:00
Owen Anderson