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98 Commits

Author SHA1 Message Date
Gabor Greif e9ecc68d8f API changes for class Use size reduction, wave 1. 
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
 2008-04-06 20:25:17 +00:00
Anton Korobeynikov 1bfd121321 Make Transforms to be 4.3 warnings-clean 
llvm-svn: 47371
 2008-02-20 11:26:25 +00:00
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Dan Gohman 75470c3bf1 explicit keywords. 
llvm-svn: 42262
 2007-09-24 15:48:49 +00:00
Chris Lattner 0625bd6472 Merge DenseMapKeyInfo & DenseMapValueInfo into DenseMapInfo 
Add a new DenseMapInfo::isEqual method to allow clients to redefine
the equality predicate used when probing the hash table.

llvm-svn: 42042
 2007-09-17 18:34:04 +00:00
David Greene c656cbb8c2 Update GEP constructors to use an iterator interface to fix 
GLIBCXX_DEBUG issues.

llvm-svn: 41697
 2007-09-04 15:46:09 +00:00
Owen Anderson a8ba659976 Fix 80 col. violations. 
llvm-svn: 40751
 2007-08-02 18:20:52 +00:00
Owen Anderson 5bd6c3f2c4 Fix a bug where we were marking GEP expressions with the wrong opcode. 
llvm-svn: 40085
 2007-07-20 08:19:20 +00:00
Owen Anderson f9e6542969 Make val_replace fail early, which reduces the time to optimize 403.gcc to 14.8s. 
llvm-svn: 40064
 2007-07-19 19:57:13 +00:00
Owen Anderson 6aa17f1def Use SmallVector and DenseMap in even more places. 
With this, the time to optimize 403.gcc is down to 15.1s.

llvm-svn: 40042
 2007-07-19 06:37:56 +00:00
Owen Anderson 75a244d6eb Change ValueTable to use a DenseMap for mapping expressions to value numbers. 
This results in a slight speedup for 403.gcc.

llvm-svn: 40040
 2007-07-19 06:13:15 +00:00
Owen Anderson 6a4ff8549b Move some sets and maps to SmallPtrSet and DenseMap respectively. This 
reduces the time to optimize 403.gcc from 17.6s to 16.4s.

llvm-svn: 40036
 2007-07-19 03:32:44 +00:00
Owen Anderson 084d3c2e2f Make the pass registration static. 
llvm-svn: 38508
 2007-07-10 20:20:19 +00:00
Owen Anderson 4c4b238448 Move some key maps from std::map to DenseMap. This improves the time to optimize Anton's testcase from 17.5s 
to 15.7s.

llvm-svn: 38480
 2007-07-10 00:27:22 +00:00
Owen Anderson 41c2cab873 Use a cheaper test, delaying calling find_leader() until we know that it's necessary. This improves 
the time to optimize Anton's testcase from 21.1s to 17.6s.

llvm-svn: 38479
 2007-07-10 00:09:25 +00:00
Owen Anderson 7ee197ecf2 Add an assertion if find_leader fails. 
llvm-svn: 38477
 2007-07-09 23:57:18 +00:00
Owen Anderson effc7a7d16 Take advantage of the new fast SmallPtrSet assignment operator when propagating AVAIL_OUT sets. 
This reduces the time to optimize Anton's testcase from 31.2s to 21.s!

llvm-svn: 38475
 2007-07-09 22:29:50 +00:00
Owen Anderson 56b01eb3d9 Fix a comment. 
llvm-svn: 38459
 2007-07-09 16:43:55 +00:00
Owen Anderson 267ba45249 Improve a hotspot that was making build_sets() slower by calling lookup() too 
often.  This improves Anton's testcase from 36s to 32s.

llvm-svn: 38441
 2007-07-09 07:56:55 +00:00
Owen Anderson 1c83b5d999 Start using a set representation that remembers the set of value numbers represented 
in the set.  For the moment, this results in a slight performance decrease, but
it lays the groundwork for future improvements.

llvm-svn: 38439
 2007-07-09 06:50:06 +00:00
Owen Anderson 8b99e0ab20 Fix an error where ANTIC_OUT was ending up with more than one expression of 
the same value number.  This fixes an infinite loop on 444.namd.

llvm-svn: 37967
 2007-07-07 20:13:57 +00:00
Owen Anderson 7d4bbc1c0c Be more aggressive in the heuristic. This mostly exposes more opportunities 
for the GVN part of GVNPRE to apply.

llvm-svn: 37951
 2007-07-06 20:29:43 +00:00
Owen Anderson 3c3dd902ec Achieve what the incorrect test was trying to do by simply requiring that all 
critical edges be split before we begin.

llvm-svn: 37949
 2007-07-06 18:12:36 +00:00
Owen Anderson bcdd7ec4c9 Remove an incorrect check. 
llvm-svn: 37948
 2007-07-06 16:52:47 +00:00
Owen Anderson 02e9698293 Fix a bunch of issues found in a testcase from 400.perlbench. 
llvm-svn: 37929
 2007-07-05 23:11:26 +00:00
Owen Anderson ca1a184fd8 Fix another bug, this time in PREing select instructions. 
llvm-svn: 37878
 2007-07-04 22:33:23 +00:00
Owen Anderson cd94fc982a Fix a typo that was killing GVNPRE of select instructions. 
llvm-svn: 37871
 2007-07-04 18:26:18 +00:00
Owen Anderson 664e260a9c Fix an error in phi translation of GEPs that was causing failures. 
llvm-svn: 37868
 2007-07-04 04:51:16 +00:00
Owen Anderson 2e4b6feac2 Add support for performing GVNPRE on GEP instructions. 
llvm-svn: 37862
 2007-07-03 23:51:19 +00:00
Owen Anderson b9a494aea3 Add functionality to value number GEP instructions. This also provides the infrastructure that will 
be used for function calls.  NOTE: This does not yet do any transformation of GEPs or function calls.

llvm-svn: 37860
 2007-07-03 22:50:56 +00:00
Owen Anderson 6b958c72bd Make the unary operator case a bit faster, since casts are the only kind of unary operation. 
llvm-svn: 37857
 2007-07-03 19:01:42 +00:00
Owen Anderson 59bd053fc5 Add support for performing GVNPRE on cast instructions, and add a testcase for this. 
llvm-svn: 37856
 2007-07-03 18:37:08 +00:00
Owen Anderson 67799d4ffb Add support for value numbering (but not actually optimizing) cast instructions. 
llvm-svn: 37789
 2007-06-29 00:51:03 +00:00
Owen Anderson c738f7ca42 Add a type field to expressions in preparation for performing GVNPRE on casts. 
llvm-svn: 37788
 2007-06-29 00:40:05 +00:00
Owen Anderson 8a9fa5d081 Add support for performing GVNPRE on select instructions. This fixes test/Transforms/GVNPRE/select.ll. 
llvm-svn: 37783
 2007-06-28 23:51:21 +00:00
Owen Anderson e02da55cc8 Make many sets a much more reasonable size. This decreases the time to optimize 
Anton's testcase from 35.5s to 34.7s.

llvm-svn: 37769
 2007-06-28 00:34:34 +00:00
Owen Anderson 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
Owen Anderson 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
Owen Anderson b6a39fcb21 Add support for performing GVNPRE on the three vector-specific operations. 
llvm-svn: 37745
 2007-06-27 04:10:46 +00:00
Owen Anderson 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
Owen Anderson 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
Owen Anderson 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
Owen Anderson 7fb6da8e4d Fix a silly mistake that was causing failures. 
llvm-svn: 37712
 2007-06-24 08:42:24 +00:00
Owen Anderson 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
Owen Anderson 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
Owen Anderson 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
Owen Anderson 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
Owen Anderson 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
Owen Anderson 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
Owen Anderson 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