llvm/test/Transforms/LCSSA, branch release_33http://llvm.orghttps://git.amat.us/llvm/atom/test/Transforms/LCSSA?h=release_332012-07-02T12:47:22ZConvert all tests using TCL-style quoting to use shell-style quoting.2012-07-02T12:47:22ZChandler Carruthchandlerc@gmail.com2012-07-02T12:47:22Zurn:sha1:4177e6fff50552908bab510f1e896fa974a6f155
This was done through the aid of a terrible Perl creation. I will not
paste any of the horrors here. Suffice to say, it require multiple
staged rounds of replacements, state carried between, and a few
nested-construct-parsing hacks that I'm not proud of. It happens, by
luck, to be able to deal with all the TCL-quoting patterns in evidence
in the LLVM test suite.
If anyone is maintaining large out-of-tree test trees, feel free to poke
me and I'll send you the steps I used to convert things, as well as
answer any painful questions etc. IRC works best for this type of thing
I find.
Once converted, switch the LLVM lit config to use ShTests the same as
Clang. In addition to being able to delete large amounts of Python code
from 'lit', this will also simplify the entire test suite and some of
lit's architecture.
Finally, the test suite runs 33% faster on Linux now. ;]
For my 16-hardware-thread (2x 4-core xeon e5520): 36s -> 24s
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Enable the new LoopInfo algorithm by default.2012-06-26T04:11:38ZAndrew Trickatrick@apple.com2012-06-26T04:11:38Zurn:sha1:c9b1e25493b393013b28e5d457f2fb2845a4dd9f
The primary advantage is that loop optimizations will be applied in a
stable order. This helps debugging and unit test creation. It is also
a better overall implementation without pathologically bad performance
on deep functions.
On large functions (llvm-stress --size=200000 | opt -loops)
Before: 0.1263s
After: 0.0225s
On deep functions (after tweaking llvm-stress, thanks Nadav):
Before: 0.2281s
After: 0.0227s
See r158790 for more comments.
The loop tree is now consistently generated in forward order, but loop
passes are applied in reverse order over the program. If we have a
loop optimization that prefers forward order, that can easily be
achieved by adding a different type of LoopPassManager.
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Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.2012-02-16T06:28:33ZEli Benderskyeli.bendersky@intel.com2012-02-16T06:28:33Zurn:sha1:0f0c411079cd21bb3a81a1b70bf8c67539a16c22
Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.
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Try to eliminate the use of the 'unwind' instruction.2011-09-02T22:41:11ZBill Wendlingisanbard@gmail.com2011-09-02T22:41:11Zurn:sha1:47e208bbeaa2cd45e999f41b07bb5618afb0152d
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Do not add PHIs with no users when creating LCSSA form. Patch by Andrew Clinton.2011-03-15T07:41:25ZCameron Zwarichzwarich@apple.com2011-03-15T07:41:25Zurn:sha1:838b97edfaf7470941d0e89ef3b9ed8867c93fc4
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127674 91177308-0d34-0410-b5e6-96231b3b80d8
Rename 'loopsimplify' to 'loop-simplify'.2011-02-10T23:38:10ZCameron Zwarichzwarich@apple.com2011-02-10T23:38:10Zurn:sha1:4a60b932a279b3f5934a274f7fe4535026c5aed1
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Avoid depending on LCSSA implicitly pulling in LoopSimplify.2010-07-26T18:00:43ZDan Gohmangohman@apple.com2010-07-26T18:00:43Zurn:sha1:38d49ad08326b3bf959b674dbf6be065b0b9366f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109410 91177308-0d34-0410-b5e6-96231b3b80d8
Make isLCSSA ignore uses in blocks not reachable from the entry block,2010-03-09T01:53:33ZDan Gohmangohman@apple.com2010-03-09T01:53:33Zurn:sha1:cbac7f163099fda6f3c036920404e4b87ab33d2a
as LCSSA no longer transforms such uses.
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Trim a bunch of unneeded code from this testcase.2009-11-10T01:33:08ZDan Gohmangohman@apple.com2009-11-10T01:33:08Zurn:sha1:7dd126cf4f3365d68fec0f11282b0c48df69b54d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86640 91177308-0d34-0410-b5e6-96231b3b80d8
Generalize LCSSA to handle loops with exits with predecessors outside2009-11-09T18:28:24ZDan Gohmangohman@apple.com2009-11-09T18:28:24Zurn:sha1:f6572d0aa2abb87d34afcca3e3bec89e1613b8ec
the loop. This is needed because with indirectbr it may not be possible
for LoopSimplify to guarantee that all loop exit predecessors are
inside the loop. This fixes PR5437.
LCCSA no longer actually requires LoopSimplify form, but for now it
must still have the dependency because the PassManager doesn't know
how to schedule LoopSimplify otherwise.
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