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027bb92541
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120 Commits

Author SHA1 Message Date
Devang Patel
027bb92541 Initialize loop data first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 20:36:36 +00:00
Devang Patel
10b359ccb6 Do not unswitch if the function notes say we're optimizing this function for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55786 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 18:55:13 +00:00
Dan Gohman
ae73dc1448 Tidy up several unbeseeming casts from pointer to intptr_t. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 17:05:41 +00:00
Devang Patel
77a01136ff Do not try to update dominator info while manipulating CFG. This code does not handle all cases and keeps invalid dom info around some cases, which misleads other passes down stream. 
Right now, dom info is recaluclated in the end if the loop is switched.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53106 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-03 17:37:52 +00:00
Bill Wendling
38976dc394 Remove unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53090 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-03 07:10:03 +00:00
Devang Patel
f31b3bbd10 Remove extra FIXME 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53087 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-03 06:50:04 +00:00
Devang Patel
4be7d294f8 Reconstruct dom info, if loop is unswitched. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53086 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-03 06:48:21 +00:00
Devang Patel
b76247b8b1 LoopUnswitch does not preserve dominator info in all cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53085 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-03 05:55:03 +00:00
Devang Patel
825cb98d9a Undo previous patch. It is not that simple to fix dom info here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-03 00:08:13 +00:00
Devang Patel
501e763dfe Preserve dom info while simplifing loop after the unswitch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53052 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-02 22:58:54 +00:00
Devang Patel
1e41f6d724 reuse vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53007 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-02 01:44:29 +00:00
Devang Patel
2095c38c7a Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-02 01:31:19 +00:00
Devang Patel
e6962dfb64 Preserve loop data so that it is not fetched everytime it is needed. 
Keep track of currentLoop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53005 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-02 01:18:13 +00:00
Devang Patel
64cd658223 Preserve dominance frontier while trivially unswitching loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52438 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 02:16:38 +00:00
Devang Patel
2f170997b5 Update dom tree. Fix PR 2372. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51887 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 22:52:56 +00:00
Dan Gohman
02dea8b39f Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to 
use it instead of duplicating its functionality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 21:05:58 +00:00
Dan Gohman
844731a7f1 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 00:00:25 +00:00
Dan Gohman
4a3f6c8882 Make several variable declarations static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50696 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 01:53:16 +00:00
Nick Lewycky
280a6e607d Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989 
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50265 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 16:53:59 +00:00
Chris Lattner
48a80b07bd fit some more code in 80 cols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50016 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 00:25:49 +00:00
Gabor Greif
051a950000 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49277 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-06 20:25:17 +00:00
Nick Lewycky
529de8a457 Update the block cloner which fixes bugpoint on code using unwind_to (phew!) 
and also update the cloning interface's major user, the loop optimizations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48088 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 05:24:34 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
David Greene
60f7515479 Get rid of annoying spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45100 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-17 17:40:29 +00:00
Owen Anderson
d735ee85db Make LoopInfoBase more generic, in preparation for having MachineLoopInfo. This involves a small interface change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44348 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-27 03:43:35 +00:00
Devang Patel
b593898e11 Do not walk invalid iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42812 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-09 21:31:36 +00:00
Devang Patel
5c4cd0d82e Fix bug in updating dominance frontier after loop 
unswitch when frontier includes basic blocks that 
are not inside loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42654 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-05 22:29:34 +00:00
Devang Patel
c1e2660c5d Fix 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42591 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 21:17:43 +00:00
Devang Patel
f476e8e7ce Refactor code in a separate method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42590 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 21:16:08 +00:00
Devang Patel
9ee49c541b Update aux. info associated with an instruction before erasing instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42180 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-20 23:45:50 +00:00
Devang Patel
b7211a2ce1 Use SmallVector instead of std::vector. 
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
David Greene
8ff18e9c99 Fix GLIBCXX_DEBUG error triggered by incrementing erased iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40897 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 16:44:38 +00:00
Chris Lattner
684b22df79 wrap some long lines. Major offenders that are left include 
gvn, gvnpre, dse, and predsimplify.  To see these, use:

  make check-line-length



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40738 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 16:53:43 +00:00
Devang Patel
1ff61385c8 Update dominator info for the middle blocks created while spliting 
exit edge to preserve LCSSA.

Fix dominance frontier update during loop unswitch. This fixes PR 1589, again



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40737 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 15:25:57 +00:00
Devang Patel
2f2e519083 Undo previous check-in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40698 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 23:24:50 +00:00
Devang Patel
28ae151c48 Update dominator info for the middle blocks created while spliting 
exit edge to preserve LCSSA.

Fix dominance frontier update during loop unswitch. This fixes PR 1589.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40695 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 22:23:50 +00:00
Dan Gohman
c2bbfc18e9 More explicit keywords. 
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
Devang Patel
15c260adff Loop unswitch preserves dom info. 
Use simple analysis interface to preserve analysis info maintained by other loop passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40627 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-31 08:03:26 +00:00
Devang Patel
6f62af6e64 If loop can be unswitched again, then do it yourself. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40609 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 23:07:10 +00:00
Devang Patel
df5cf2074c Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40606 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 21:10:44 +00:00
Chuck Rose III
936baaa5ae VStudio compiler errors and placing Function*->ExFunc map under ManagedStatic control. 
This commit fixes two things.  One is a pair of VStudio compiler errors stemming from variables
which defined within the for loop statement and also within the body of the for loop.  I fixed these 
by renaming one of the two variables.  Additionally, I've made the Function*->ExFunc map in 
ExternalFunctions.cpp a ManagedStatic object, so that cleanup will be done on llvm_shutdown.  In repeated
uses of the interpreter, where the same Function* address may get used for completely differnet functions,
this was causing a crash.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40558 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-27 18:26:35 +00:00
Devang Patel
24857a3fac Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40025 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-18 23:50:19 +00:00
Devang Patel
31ad75329e Fix dominator info update to accommodate CFG changes. 
This fixes PR1559.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40024 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-18 23:48:20 +00:00
Devang Patel
fba36b8cba Disable claims to preserve analysis until open issues are resolved. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39834 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-13 21:53:42 +00:00
Devang Patel
05c1dc6493 These rountines are now available as part of basic block utilities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37955 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-06 22:03:47 +00:00
Devang Patel
f34a43acc0 Preserve DominanceFrontier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37820 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-29 23:11:49 +00:00
Devang Patel
6c631988c7 Do not filter loop if candidate branch is in loop header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37792 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-29 01:39:53 +00:00
Devang Patel
eb62eca503 - Undo previous check and allow loop switch for condtion that is not inside 
loop.
- Avoid loop unswich for loop header branch.
- While cloning dominators fix typo and handle self dominating blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37772 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-28 02:05:46 +00:00
Devang Patel
cce624a7a9 Update LoopUnswitch pass to preserve DomiantorTree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37771 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-28 00:49:00 +00:00
Devang Patel
558f1b8439 If a condition is not inside a loop then the condition is suitable 
to loop unswitch candidate for the loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37770 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-28 00:44:10 +00:00