David Greene
52eec54820
New CallInst interface to address GLIBCXX_DEBUG errors caused by
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indexing an empty std::vector.
Updates to all clients.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40660 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-01 03:43:44 +00:00
Owen Anderson
bf7d0bc4e5
Don't let the memory allocator outsmart GVN. ;-)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40655 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 23:27:13 +00:00
Owen Anderson
b95f9d565f
Fix a failure I accidentally caused in my last commit by mishandling the
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removal of redundant phis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40650 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 20:18:28 +00:00
Lauro Ramos Venancio
c7d1114ade
Fix a bug in GetKnownAlignment of packed structs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40649 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 20:13:21 +00:00
Owen Anderson
054ab94bff
Fix a misoptimization in aha.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40642 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 17:43:14 +00:00
Dan Gohman
a9cfed77b6
Use SCEVExpander::InsertCastOfTo instead of calling new IntToPtrInst
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directly, because the insert point used by the SCEVExpander may vary
from what LSR originally computes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40641 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 17:22:27 +00:00
Devang Patel
8d246f09cb
Add note.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40638 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 16:52:25 +00:00
Devang Patel
15c260adff
Loop unswitch preserves dom info.
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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
91d22c8b1e
Implement Simple Analysis interfaces - cloneBasicBlockAnalysis and deleteAnalysisValue.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40626 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-31 08:01:41 +00:00
Devang Patel
6f62af6e64
If loop can be unswitched again, then do it yourself.
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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
Owen Anderson
891eecb040
Avoid potential iterator invalidation problems.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40607 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 21:26:39 +00:00
Devang Patel
df5cf2074c
Remove dead code.
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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
Devang Patel
81a129c0fb
LCSSA preserves dom info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40604 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 20:23:45 +00:00
Devang Patel
d9a6dcba9f
Loop Rotation pass preserves dominator tree and frontier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40603 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 20:22:53 +00:00
Devang Patel
96b651c627
LICM preserves scalar evolution and dom frontier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40602 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 20:19:59 +00:00
Reid Spencer
ed3fa8552a
Fix a typo/thinko.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40599 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 19:53:57 +00:00
Owen Anderson
45c8388e2a
Use more caching when computing non-local dependence. This makes bzip2 not
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use up the entire 32-bit address space.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40596 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 17:29:24 +00:00
Owen Anderson
4f9ba7c40c
Fix a bug caused by indiscriminantly asking for the dominators of a predecessor.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40595 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 16:57:08 +00:00
Devang Patel
29381fb7cd
Use SmallPtrSet.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40560 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-27 18:34:27 +00:00
Chuck Rose III
936baaa5ae
VStudio compiler errors and placing Function*->ExFunc map under ManagedStatic control.
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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
70b36d96b3
Fix thinko. Update return status appropriately.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40546 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 20:21:42 +00:00
Owen Anderson
45537917ee
Fix a couple more bugs in the phi construction by pulling in code that does
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almost the same things from LCSSA.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40540 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 18:26:51 +00:00
Dan Gohman
37f3ee17d2
Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDead
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to Instruction::mayWriteToMemory, fixing a FIXME, and helping
various places that call mayWriteToMemory directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40533 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 16:06:08 +00:00
Dan Gohman
c2dfd066c0
Remove a bogus return statement, what appears to have been a pasto
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from Relation::contradicts in Relation::incorporate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40531 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 15:29:35 +00:00
Owen Anderson
febc7e3613
Fix what is _hopefully_ the last corner case for loops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40503 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 23:54:42 +00:00
Owen Anderson
9f435740b1
My last commit was not correct for nested loops. Fix it, and add a testcase for it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40498 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 22:19:40 +00:00
Owen Anderson
0d16988690
Fix an infinite loop on 300.twolf.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40497 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 22:03:06 +00:00
Owen Anderson
2e3d6b4a27
Fix a bug that was causing GVN to crash on 252.eon.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40494 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 21:13:41 +00:00
Owen Anderson
0cd320362e
Add basic support for performing whole-function RLE.
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Note: This has not yet been thoroughly tested. Use at your own risk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40489 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 19:57:03 +00:00
Devang Patel
6899b31422
Add BasicInliner interface.
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This interface allows clients to inline bunch of functions with module
level call graph information.:wq
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40486 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-25 18:00:25 +00:00
Owen Anderson
1ad2cb7555
Add a GVN pass, using the value numbering code I developed for GVNPRE and the
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load elimination code from RedundantLoadElimination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40469 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24 17:55:58 +00:00
Owen Anderson
a7f98e2919
Rename a lot of things to change FastDLE to RedundantLoadElimination.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24 00:17:04 +00:00
Owen Anderson
e2a1624da3
Rename FastDLE as RedundantLoadElimination.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40456 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24 00:08:38 +00:00
Owen Anderson
6b8894bb67
Don't delete volatile loads. Doing so is not safe.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40448 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-23 22:05:54 +00:00
Owen Anderson
ffe40aa97d
Add FastDLE, the load-elimination counterpart of FastDSE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40445 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-23 21:48:08 +00:00
Owen Anderson
d989711844
Fix file header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40440 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-23 18:30:37 +00:00
Chris Lattner
410ce1c49a
completely remove a transformation that is unsafe in the face of
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undefs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40439 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-23 17:10:17 +00:00
Devang Patel
00ae1a2f02
Apply temporary work around to fix llvm mis-compilation
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reported in PR 1556.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40133 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-21 00:34:29 +00:00
Chris Lattner
3ccc6bc61c
this xform is already done by the constant folder.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40124 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20 22:06:41 +00:00
Dan Gohman
9941f7426d
Optimize alignment of loads and stores.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40102 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20 16:34:21 +00:00
Duncan Sands
e2abf12436
Place SCCPSolver also in the anonymous namespace. This
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pacifies g++-4.2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40089 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20 08:56:21 +00:00
Owen Anderson
c9399be5e5
Fix a bug where we were marking GEP expressions with the wrong opcode.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40085 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20 08:19:20 +00:00
Owen Anderson
b83e56f6b6
Make val_replace fail early, which reduces the time to optimize 403.gcc to 14.8s.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40064 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 19:57:13 +00:00
Devang Patel
58e0ef1e90
Verify loop info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40062 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 18:02:32 +00:00
Owen Anderson
19bc4a8acd
Use SmallVector and DenseMap in even more places.
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With this, the time to optimize 403.gcc is down to 15.1s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40042 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 06:37:56 +00:00
Owen Anderson
fb66541e63
Change ValueTable to use a DenseMap for mapping expressions to value numbers.
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This results in a slight speedup for 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40040 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 06:13:15 +00:00
Owen Anderson
b97819852a
Move some sets and maps to SmallPtrSet and DenseMap respectively. This
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reduces the time to optimize 403.gcc from 17.6s to 16.4s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40036 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 03:32:44 +00:00
Devang Patel
a8a8a36629
After a basic block is split into two parts,
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second part dominates all the blocks dominated
by original basic block. And first part dominates
second part.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40035 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 02:29:24 +00:00
Devang Patel
72ea8d9060
Now this temp. fix is not required.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40034 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-19 02:22:21 +00:00
Devang Patel
24857a3fac
Fix typo.
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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.
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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
Owen Anderson
ce17b1c1f8
Take advantage of undefined behavior if the source program tries to GEP
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beyond the end of an alloca to make FastDSE faster and more aggressive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39945 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 23:34:39 +00:00
Owen Anderson
faac518ce0
Add support for walking up memory def chains, which enables finding many more
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dead stores on 400.perlbench.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39929 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 21:52:50 +00:00
Reid Spencer
bde6869ef4
Return Undef if the block has no dominator. This was required to allow
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llvm-gcc build to succeed. Without this change it fails in libstdc++
compilation. This causes no regressions in dejagnu tests. However,
someone who knows this code better might want to review it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39924 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 21:03:44 +00:00
Dan Gohman
07a96765da
Fix comments about vectors to use the current wording.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39921 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 14:29:03 +00:00
Chris Lattner
cb7122bb7d
Repair a regression in Transforms/InstCombine/mul.ll that Reid noticed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39896 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 04:15:34 +00:00
Nick Lewycky
5380e941ef
Start adding and cleaning up comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39894 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16 02:58:37 +00:00
Chris Lattner
4241e4da85
Implement shift-simplify.ll:test[45].
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First teach instcombine that sign bit checks only demand the
sign bit, this allows simplify demanded bits to hack on
expressions better.
Second, teach instcombine that ashr is useless if only the
sign bit is demanded.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39880 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-15 20:54:51 +00:00
Chris Lattner
a0141b90a3
Implement shift-simplify.ll:test3, turning:
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(X << 31) <s 0 --> (X&1) != 0
This happens dozens of times in the CFE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39879 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-15 20:42:37 +00:00
Nick Lewycky
a73d11efd4
Use maximal intersection algorithm exclusively. Fixes miscompile bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39852 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-14 04:28:04 +00:00
Devang Patel
b4559a2179
Make LCSSA a loop pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39844 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-13 23:57:11 +00:00
Owen Anderson
a08971559d
Handle GEPs with all-zero indices in the same way we handle pointer-pointer bitcasts. Also, fix a potentia infinite loop.
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This brings FastDSE to parity with old DSE on 175.vpr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39839 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-13 22:50:48 +00:00
Devang Patel
fba36b8cba
Disable claims to preserve analysis until open issues are resolved.
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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
Owen Anderson
3e8d001799
Be more aggressive in removing dead stores, and in removing instructions trivially dead after DSE.
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This drastically improves the effect of FastDSE on kimwitu++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39819 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-13 18:26:26 +00:00
Owen Anderson
43b2676cc2
Reimplement removing stores to allocas at the end of a function. This should be safe now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39790 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-12 21:41:30 +00:00
Owen Anderson
dd61c2b25c
Make the condition-checking for free with non-trivial dependencies more correct.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39789 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-12 18:08:51 +00:00
Owen Anderson
1b4542b6df
Remove the end-block handling code. It was unsafe, and making it safe would have resulted in falling back to the slow DSE case. I need to think some more about the right way to handle this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39788 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-12 17:52:20 +00:00
Gabor Greif
3b0a7ea66e
checked in as obvious,
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thanks Benoit Boissinot!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39774 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-12 13:31:38 +00:00
Owen Anderson
1cb960a4bb
Let MemoryDependenceAnalysis take care of updating AliasAnalysis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39769 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-12 00:06:21 +00:00
Devang Patel
990e866deb
Preserve analysis info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39767 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 23:47:28 +00:00
Owen Anderson
a96c1f665a
Handle the case where an entire structure is freed, and its dependency is a store to a field within
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that structure.
Also, refactor the runOnBasicBlock() function, splitting some of the special cases into separate functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39762 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 23:19:17 +00:00
Owen Anderson
6f46d65104
Add support for eliminate stores to stack-allocated memory locations at the end
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of a function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39754 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 21:06:56 +00:00
Owen Anderson
2655adb3b2
Handle eliminating stores that occur right before a free.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39753 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 20:38:34 +00:00
Owen Anderson
bfbfb3c464
Clean up a few things based on Chris' feedback.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39747 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 19:03:09 +00:00
Tanya Lattner
08d14d2469
Adding ability to demote phi to stack.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39744 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 18:41:34 +00:00
Owen Anderson
b77c457cc8
Add FastDSE, a new algorithm for doing dead store elimination. This algorithm is not as accurate
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as the current DSE, but it only a linear scan over each block, rather than quadratic. Eventually
(once it has been improved somewhat), this will replace the current DSE.
NOTE: This has not yet been extensively tested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38517 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 00:46:18 +00:00
Owen Anderson
16a72bb47d
Make the pass registration static.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38508 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 20:20:19 +00:00
Anton Korobeynikov
a289511090
During module cloning copy aliases too. This fixes PR1544
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38505 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 19:07:35 +00:00
Nick Lewycky
6e8eb7f075
Update the ValueRanges interface to use value numbers instead of Value*s.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38483 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 03:28:21 +00:00
Owen Anderson
81c2a6ecbb
Move some key maps from std::map to DenseMap. This improves the time to optimize Anton's testcase from 17.5s
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to 15.7s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38480 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 00:27:22 +00:00
Owen Anderson
a05a81b10a
Use a cheaper test, delaying calling find_leader() until we know that it's necessary. This improves
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the time to optimize Anton's testcase from 21.1s to 17.6s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38479 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 00:09:25 +00:00
Owen Anderson
5fd507d431
Add an assertion if find_leader fails.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38477 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 23:57:18 +00:00
Owen Anderson
dfa2435784
Take advantage of the new fast SmallPtrSet assignment operator when propagating AVAIL_OUT sets.
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This reduces the time to optimize Anton's testcase from 31.2s to 21.s!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38475 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 22:29:50 +00:00
Devang Patel
ff366850aa
Expose struct size threhold to allow users to tweak their own setting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38472 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 21:19:23 +00:00
Owen Anderson
ab3fd054ea
Fix a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38459 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 16:43:55 +00:00
Owen Anderson
b9eeb1acbc
Improve a hotspot that was making build_sets() slower by calling lookup() too
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often. This improves Anton's testcase from 36s to 32s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38441 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 07:56:55 +00:00
Owen Anderson
0616dffd64
Start using a set representation that remembers the set of value numbers represented
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in the set. For the moment, this results in a slight performance decrease, but
it lays the groundwork for future improvements.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38439 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09 06:50:06 +00:00
Owen Anderson
36a07daabd
Fix an error where ANTIC_OUT was ending up with more than one expression of
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the same value number. This fixes an infinite loop on 444.namd.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37967 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-07 20:13:57 +00:00
Nick Lewycky
8f5149e002
Back out Devang's fix for PR1320 because it causes PR1542.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37966 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-07 16:23:34 +00:00
Devang Patel
05c1dc6493
These rountines are now available as part of basic block utilities.
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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
7be06f9158
Request DominanceFrontiner in advance.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37954 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 21:43:22 +00:00
Devang Patel
658f625d16
Preserve various analysis info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37953 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 21:40:13 +00:00
Devang Patel
8019893c3f
Add SplitEdge and SplitBlock utility routines.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37952 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 21:39:20 +00:00
Owen Anderson
ec5614b522
Be more aggressive in the heuristic. This mostly exposes more opportunities
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for the GVN part of GVNPRE to apply.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37951 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 20:29:43 +00:00
Owen Anderson
2c194e6bd1
Achieve what the incorrect test was trying to do by simply requiring that all
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critical edges be split before we begin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37949 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 18:12:36 +00:00
Owen Anderson
6a6152ca2d
Remove an incorrect check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37948 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 16:52:47 +00:00
Zhou Sheng
33b0b8d242
Correct a typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37936 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-06 06:01:16 +00:00
Owen Anderson
2a5c9d8aac
Fix a bunch of issues found in a testcase from 400.perlbench.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37929 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-05 23:11:26 +00:00
Nick Lewycky
29a05b6a71
Break "variable canonicalization" out of InequalityGraph and into its own class
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"ValueNumbering".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37881 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-05 03:15:00 +00:00
Owen Anderson
ec3ed5f8e4
Fix another bug, this time in PREing select instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37878 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-04 22:33:23 +00:00
Owen Anderson
df30b63663
Fix a typo that was killing GVNPRE of select instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37871 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-04 18:26:18 +00:00
Owen Anderson
9eee94c5f7
Fix an error in phi translation of GEPs that was causing failures.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37868 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-04 04:51:16 +00:00
Owen Anderson
5653322e72
Add support for performing GVNPRE on GEP instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37862 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-03 23:51:19 +00:00
Owen Anderson
eb21686ea9
Add functionality to value number GEP instructions. This also provides the infrastructure that will
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be used for function calls. NOTE: This does not yet do any transformation of GEPs or function calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37860 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-03 22:50:56 +00:00
Owen Anderson
3d6fac3993
Make the unary operator case a bit faster, since casts are the only kind of unary operation.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37857 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-03 19:01:42 +00:00
Owen Anderson
216394f9b3
Add support for performing GVNPRE on cast instructions, and add a testcase for this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37856 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-03 18:37:08 +00:00
Devang Patel
f34a43acc0
Preserve DominanceFrontier.
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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
David Greene
c08fa28897
Fix reference to iterator invalidated by an erase operation. Uncovered
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by _GLIBCXX_DEBUG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37796 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-29 02:53:16 +00:00
Devang Patel
6c631988c7
Do not filter loop if candidate branch is in loop header.
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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
Owen Anderson
ca6c31cc41
Add support for value numbering (but not actually optimizing) cast instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37789 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-29 00:51:03 +00:00
Owen Anderson
40dc00eb82
Add a type field to expressions in preparation for performing GVNPRE on casts.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37788 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-29 00:40:05 +00:00
Owen Anderson
890e1a0401
Add support for performing GVNPRE on select instructions. This fixes test/Transforms/GVNPRE/select.ll.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37783 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-28 23:51:21 +00:00
Devang Patel
eb62eca503
- Undo previous check and allow loop switch for condtion that is not inside
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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.
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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
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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
Owen Anderson
a20f35d2e7
Make many sets a much more reasonable size. This decreases the time to optimize
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Anton's testcase from 35.5s to 34.7s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37769 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-28 00:34:34 +00:00
Owen Anderson
68cb52e468
Use cached information that has already been computed to make clean() simpler and faster. This is a small speedup on most cases.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37761 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-27 17:38:29 +00:00
Owen Anderson
7b317d2f59
Fold a lot of code into two cases: binary instructions and ternary instructions.
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This saves many lines of code duplication. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37759 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-27 17:03:03 +00:00
Zhou Sheng
0d7d3656f3
Fix a bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37751 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-27 09:50:26 +00:00
Owen Anderson
62cf8babdb
Add support for performing GVNPRE on the three vector-specific operations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37745 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-27 04:10:46 +00:00
Owen Anderson
6032a5ba64
1. Correct some comments and clean up some dead code.
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37742 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-26 23:29:41 +00:00
Chris Lattner
ba6801e6e7
fix Transforms/Inline/2007-06-25-WeakInline.ll by not inlining functions
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with weak linkage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37723 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-25 21:50:09 +00:00
Owen Anderson
9030d384c4
Use the built-in postorder iterators rather than computing a postorder walk by hand.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37721 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-25 18:25:31 +00:00
Owen Anderson
f62c44a38d
1) Fix an issue with non-deterministic iteration order in phi_translate
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37714 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-25 05:41:12 +00:00
Nick Lewycky
4390feb7ae
Fix value ranges.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37713 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-24 20:14:22 +00:00
Owen Anderson
79a6370133
Fix a silly mistake that was causing failures.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37712 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-24 08:42:24 +00:00
Nick Lewycky
dea252689d
Remove tabs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37710 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-24 04:40:16 +00:00
Nick Lewycky
984504b912
Remove use of ETForest. Also cleaned up issues around unreachable basic
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blocks, and optimizing within one basic block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37709 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-24 04:36:20 +00:00
Owen Anderson
647580483c
Rework topo_sort so eliminate some behavior that scaled terribly. This reduces the time to optimize 403.gcc from 18.2s to 17.5s,
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and has an even larger effect on larger testcases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37708 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-22 21:31:16 +00:00
Owen Anderson
2106f61f23
Perform fewer set insertions while calculating ANTIC_IN. This reduces the amount of time to optimize 403.gcc from 21.9s to 18.2s.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37707 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-22 18:27:04 +00:00
Owen Anderson
b3b37345de
Remove some code that I was using for collecting performance information that should not have been committed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37706 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-22 17:04:40 +00:00
Owen Anderson
124084604d
Avoid excessive calls to find_leader when calculating AVAIL_OUT. This reduces the time to optimize 403.gcc from 23.5s to 21.9s.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37702 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-22 03:14:03 +00:00
Owen Anderson
e8138ffeaf
Reserve space in vectors before topologically sorting into them. This improves the time to optimize 403.gcc from 28s to 23.5s.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37699 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-22 00:43:22 +00:00
Owen Anderson
82575d8ab1
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.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37698 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-22 00:20:30 +00:00
Chris Lattner
1dbfd48fa2
Significantly improve the documentation of the instcombine divide/compare
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37692 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 18:11:19 +00:00
Owen Anderson
66fd906074
Change lots of sets from std::set to SmallPtrSet. This reduces the time required to optimize 253.perlbmk from 10.9s to 5.3s.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37690 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 17:57:53 +00:00
Devang Patel
0e7f728ad1
Move code to update dominator information after basic block is split
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from LoopSimplify.cpp to Dominator.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37689 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 17:23:45 +00:00
Owen Anderson
58e087b6e3
Eliminate a redundant check. This speeds up optimization of 253.perlbmk from 13.5 seconds to 10.9 seconds.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37683 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 01:59:05 +00:00
Owen Anderson
9cb56014ce
Comment-ize the functions in GVNPRE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37681 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 00:19:05 +00:00
Chris Lattner
562ef78df2
refactor a bunch of code out of visitICmpInstWithInstAndIntCst into its own
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routine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37679 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-20 23:46:26 +00:00
Owen Anderson
3eaca716bf
Split runOnFunction into many smaller functions. This make it easier to get accurate performance analysis of GVNPRE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37678 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-20 22:10:02 +00:00
Owen Anderson
0304b2bc2b
Make GVNPRE accurate report whether it modified the function or not.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37673 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-20 18:30:20 +00:00
Owen Anderson
5dbea73e35
Get rid of an unneeded helper function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37670 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-20 00:43:33 +00:00
Owen Anderson
4f703ec0a1
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.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37668 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 23:23:54 +00:00
Owen Anderson
52471b102c
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.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37667 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 23:07:16 +00:00
Tanya Lattner
c91c56cf43
Moved Inliner.h to include/llvm/Transforms/IPO/InlinerPass.h
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37666 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 22:31:52 +00:00
Tanya Lattner
6f7426ec2e
Inliner pass header file was moved.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37665 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 22:29:50 +00:00
Dan Gohman
5cec4db6ae
Rename ScalarEvolution::deleteInstructionFromRecords to
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37657 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 14:28:31 +00:00
Owen Anderson
d0954105f0
Handle constants in phi nodes properly. This fixes test/Transforms/GVNPRE/2007-06-18-ConstantInPhi.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37655 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 07:35:36 +00:00
Chris Lattner
2384d7b179
silence a bogus warning Duraid ran into.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37649 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 05:43:49 +00:00
Owen Anderson
20cb51fda4
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.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37647 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 05:37:32 +00:00
Owen Anderson
6cae7409b1
Remember to clear the maximal sets between functions.
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Thanks to Nicholas for valgrinding this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37646 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 04:32:55 +00:00
Owen Anderson
086f5f350b
Refactor GVNPRE to use a much smart method of uniquing value sets, and centralize a lot of the value numbering information. No functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37645 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 03:31:41 +00:00
Owen Anderson
bbf1197be1
Cache the results of dependsOnInvoke()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37622 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-18 04:42:29 +00:00
Owen Anderson
a8daa7176b
Fix indentation.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37621 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-18 04:31:21 +00:00
Owen Anderson
60e174495a
Don't perform an expensive check if it's not necessary.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37620 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-18 04:30:44 +00:00
Owen Anderson
32bc789b6c
Fix test/Transforms/GVNPRE/2007-06-15-InvokeInst.ll by ignoring all instructions that depend on invokes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37610 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-16 00:26:54 +00:00
Dan Gohman
e19dd87598
Use SCEVConstant::get instead of SCEVUnknown::get to create an
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integer constant SCEV.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37596 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 18:00:55 +00:00
Owen Anderson
383bcb2e78
Fix test/Transforms/GVNPRE/2007-06-15-Looping.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37595 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 17:55:15 +00:00
Dan Gohman
d19534add9
Add a SCEV class and supporting code for sign-extend expressions.
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37591 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 14:38:12 +00:00
Chris Lattner
7cbe2ebb21
Generalize many transforms to work on ~ of vectors in addition to ~ of
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integer ops. This implements Transforms/InstCombine/and-or-not.ll
test3/test4, and finishes off PR1510
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37589 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 06:23:19 +00:00
Chris Lattner
003b6200df
Implement two xforms:
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37584 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 05:58:24 +00:00
Chris Lattner
041a6c9048
delete some obviously dead vector operations, which deletes a few thousand
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operations from Duraids example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37582 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 05:26:55 +00:00
Owen Anderson
71fcebcf8a
Fix test/Transforms/GVNPRE/2007-06-12-PhiTranslate.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37564 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 22:43:57 +00:00
Owen Anderson
239e71201e
Refactor some code, and fix test/Transforms/GVNPRE/2007-06-12-NoExit.ll by being more careful when using
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post-dominator information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37556 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 16:57:50 +00:00
Dale Johannesen
ce0b23721e
Sink CmpInst's to their uses to reduce register pressure.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37554 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 16:50:17 +00:00
Owen Anderson
65d2862a60
Fix a few more bugs, including an instance of walking in reverse topological rather than topological order. This
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fixes a testcase extracted from llvm-test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37550 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:50:47 +00:00
Devang Patel
fe7d4e50b8
Add and use DominatorTreeBase::findNearestCommonDominator().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37545 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-11 23:31:22 +00:00
Devang Patel
f60e5a2cd9
Simplify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37542 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-11 21:45:31 +00:00
Devang Patel
b28aaadfff
simplify
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37541 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-11 21:25:31 +00:00
Devang Patel
e3f653606d
Simplify. Dominator Tree is required so always available.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37540 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-11 21:18:00 +00:00
Owen Anderson
0e71466405
Handle functions with multiple exit blocks properly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37539 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-11 16:25:17 +00:00
Owen Anderson
139fe848a2
Perform PRE of comparison operators.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37536 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-09 18:35:31 +00:00
Owen Anderson
b8b873cb7d
Collect statistics from GVN-PRE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37530 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 22:02:36 +00:00
Owen Anderson
a7f916cf89
Fix typo in a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37526 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 20:57:08 +00:00
Owen Anderson
8338ff5ff1
Fix a bug that was causing the elimination phase not to replace values when it should be.
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With this patch, GVN-PRE now correctly optimizes the example from the thesis.
Many thanks to Daniel Berlin for helping me find errors in this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37525 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 20:44:02 +00:00
Owen Anderson
900997ba3b
Small bugfix, and const-ify some methods (Thanks, Bill).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37513 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 01:52:45 +00:00
Devang Patel
dba2413b2e
Update LoopSimplify to require and preserve DominatorTree only.
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Now LoopSimplify does not require nor preserve ETForest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37512 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 01:50:32 +00:00
Owen Anderson
397d405731
Add partial redundancy elimination.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37510 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 01:03:01 +00:00
Devang Patel
f86a73cbef
Do not preserve ETForest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37506 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 00:02:08 +00:00
Devang Patel
468502e41a
Do not require ETForest. Now it is unused by LICM.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37502 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 22:21:15 +00:00
Devang Patel
4b90e3a276
Do not use ETForest as well as DomiantorTree. DominatorTree is sufficient.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37501 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 22:17:16 +00:00
Devang Patel
326821ef12
Use DominatorTree instead of ETForest.
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This allows faster immediate domiantor walk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37500 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 21:57:03 +00:00
Devang Patel
b7d9dfc7ba
Use DominatorTree instead of ETForest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37499 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 21:42:15 +00:00
Devang Patel
fa51f9ae12
Use DominatorTree instead of ETForest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37498 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 21:35:27 +00:00
Devang Patel
a97e040e05
Use DominatorTree instead of ETForest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37495 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 18:45:06 +00:00
Devang Patel
387b8cbc2d
Use DominatorTree instead of ETForest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37494 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 18:40:55 +00:00
Devang Patel
9a51157db5
Maintain ETNode as part of DomTreeNode.
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This adds redundancy for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37492 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 17:47:21 +00:00
Tanya Lattner
b62fa8ab6b
Formating fixes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37491 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07 17:12:16 +00:00
Tanya Lattner
682f683669
Instruct the inliner to obey the noinline attribute. Add test case.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37481 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 21:59:26 +00:00
Chris Lattner
4e2288b9de
simplify this code and fix PR1493, now that llvm-gcc3 is dead.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37478 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 20:51:41 +00:00
Lauro Ramos Venancio
d0499af703
Fix PR1499.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37472 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 17:08:48 +00:00
Nick Lewycky
5adcefb04d
Inform ScalarEvolutions that we're deleting Values.
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This is the obviously correct part of the fix for PR1487.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 03:51:56 +00:00
Owen Anderson
12112af5e8
Add simple full redundancy elimination.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37455 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 01:27:49 +00:00
Chris Lattner
b47f6124f4
Fix PR1495 and CodeGen/X86/2007-06-05-LSR-Dominator.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37454 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 01:23:55 +00:00
Devang Patel
743f7e8839
Avoid non-trivial loop unswitching while optimizing for size.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37446 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 00:21:03 +00:00
Owen Anderson
1d4eb6ab0d
Fix a misunderstanding of the algorithm. Really, we should be tracking values
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and expression separately. We can get around this, however, by only keeping
opaque values in TMP_GEN.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37443 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-05 23:46:12 +00:00
Owen Anderson
8f862c80bc
Don't leak memory.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37442 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-05 22:11:49 +00:00
Owen Anderson
359208032b
Fix a small bug, some 80 cols violations, and add some more debugging output.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37436 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-05 17:31:23 +00:00
Dan Gohman
d8af90c1da
Allow insertelement, extractelement, and shufflevector to be hoisted/sunk
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by LICM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37435 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-05 16:05:55 +00:00
Bill Wendling
851879c4cf
Patches by Chuck Rose to unbreak V Studio builds.
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Thanks Chuck!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37428 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 23:52:59 +00:00
Devang Patel
170f2b9bef
s/ETNode::getChildren/ETNode::getETNodeChildren/g
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37426 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 23:45:02 +00:00
Owen Anderson
dbc705b73f
Don't use std::set_difference when the two sets are sorted differently. Compute
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the difference manually instead.
This allows GVNPRE to produce correct analysis for the example in the GVNPRE
paper.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37425 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 23:34:56 +00:00
Owen Anderson
082fe7185e
Fix a bunch of small bugs, and improve the debugging output significantly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37424 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 23:28:33 +00:00
Chris Lattner
f0a9aaba4c
When rebuilding constant structs, make sure to honor the isPacked bit.
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This fixes PR1491 and GlobalOpt/2007-06-04-PackedStruct.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37423 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 22:23:42 +00:00
Owen Anderson
5ea069fdda
Make phi_translate correct.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 18:05:26 +00:00
Devang Patel
83beaee227
s/DominatorTree::createNewNode/DominatorTree::addNewBlock/g
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 16:43:25 +00:00
Devang Patel
26a6908768
Add basic block level interface to change immediate dominator
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and create new node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37414 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 16:22:33 +00:00
Devang Patel
26042420d6
s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37407 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-04 00:32:22 +00:00
Owen Anderson
0fa6b37c6f
Don't use the custom comparator where it's not necessary.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37406 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-03 22:02:14 +00:00
Devang Patel
bec7647f98
s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37403 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-03 06:26:14 +00:00
Owen Anderson
10ac137d0b
Remove an unused method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37402 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-03 05:58:25 +00:00
Owen Anderson
a724ac1a73
There's no need to have an Expression class... Value works just as well! This simplifies a lot of code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37401 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-03 05:55:58 +00:00
Devang Patel
e7ae1a9dee
Insert new instructions in AliasSet.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37390 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-01 22:15:31 +00:00
Owen Anderson
aa7d3351f0
clean() needs to process things in topological order.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37389 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-01 22:00:37 +00:00
Owen Anderson
8e21fb7df8
Fix Expression comparison, which in turn fixes a value numbering error.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37386 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-01 17:34:47 +00:00
Owen Anderson
243f348c2a
Add a topological sort function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37376 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-31 22:44:11 +00:00
Owen Anderson
8214d50338
Attempt to fix up phi_translate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37366 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-31 00:42:15 +00:00
Devang Patel
f38ac5dd39
Fix typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37360 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-30 15:29:37 +00:00
Chris Lattner
39a1c04323
Fix Transforms/ScalarRepl/2007-05-29-MemcpyPreserve.ll and the second
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half of PR1421, by not decimating structs with holes that are the source and
destination of a memcpy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37358 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-30 06:11:23 +00:00
Owen Anderson
2c0c51593d
Fix a typo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37350 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 23:34:14 +00:00
Owen Anderson
e3072b292f
Re-fix a bug, where I was now being too aggressive.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37348 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 23:26:30 +00:00
Owen Anderson
cdf8efde6a
Use proper debugging facilities so other people don't have to look at my commented-out
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debugging lines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37347 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 23:15:21 +00:00
Owen Anderson
9b6bd12ef0
Comment debug code out that I accidentally uncommented last time.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37346 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 22:43:03 +00:00
Owen Anderson
b502bdb604
Add a place where I missed using the maximal set. Note that using the maximal
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set this way is _SLOW_. Somewhere down the line, I'll look at speeding it up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37345 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 22:35:41 +00:00
Owen Anderson
ea12a06a81
Very first part of a GVN-PRE implementation. It currently performs a bunch of analysis, and nothing more. It is also quite slow for the moment. However,
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it should give a sense of what's going on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37343 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 21:53:49 +00:00
Chris Lattner
7139406707
Fix PR1446 by not scalarrepl'ing giant structures.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37326 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-24 18:43:04 +00:00
Dan Gohman
fa73ea2d9f
Minor comment cleanups.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37321 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-24 14:36:04 +00:00
Chris Lattner
2b7e0ade62
fix a miscompilation when passing a float through varargs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37297 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-23 01:17:04 +00:00
Chris Lattner
a2b18de4ba
Fix Transforms/InstCombine/2007-05-18-CastFoldBug.ll, a bug that devastates
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objc code due to the way the FE lowers objc message sends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37256 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-19 06:51:32 +00:00
Chris Lattner
fb3e1190fc
Handle negative strides much more optimally. This compiles X86/lsr-negative-stride.ll
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into:
_t:
movl 8(%esp), %ecx
movl 4(%esp), %eax
cmpl %ecx, %eax
je LBB1_3 #bb17
LBB1_1: #bb
cmpl %ecx, %eax
jg LBB1_4 #cond_true
LBB1_2: #cond_false
subl %eax, %ecx
cmpl %ecx, %eax
jne LBB1_1 #bb
LBB1_3: #bb17
ret
LBB1_4: #cond_true
subl %ecx, %eax
cmpl %ecx, %eax
jne LBB1_1 #bb
jmp LBB1_3 #bb17
instead of:
_t:
subl $4, %esp
movl %esi, (%esp)
movl 12(%esp), %ecx
movl 8(%esp), %eax
cmpl %ecx, %eax
je LBB1_4 #bb17
LBB1_1: #bb.outer
movl %ecx, %edx
negl %edx
LBB1_2: #bb
cmpl %ecx, %eax
jle LBB1_5 #cond_false
LBB1_3: #cond_true
addl %edx, %eax
cmpl %ecx, %eax
jne LBB1_2 #bb
LBB1_4: #bb17
movl (%esp), %esi
addl $4, %esp
ret
LBB1_5: #cond_false
movl %ecx, %edx
subl %eax, %edx
movl %eax, %esi
addl %esi, %esi
cmpl %ecx, %esi
je LBB1_4 #bb17
LBB1_6: #cond_false.bb.outer_crit_edge
movl %edx, %ecx
jmp LBB1_1 #bb.outer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37252 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-19 01:22:21 +00:00
Devang Patel
9f26f73179
Fix PR1431
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Test case at Transformations/SCCP/2007-05-16-InvokeCrash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37185 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-17 22:10:15 +00:00
Chris Lattner
ce3e2bff8b
selects can also reach here
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37081 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-15 06:42:04 +00:00
Chris Lattner
6b6aef8efc
Fix Transforms/InstCombine/2007-05-14-Crash.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37057 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-15 00:16:00 +00:00
Dan Gohman
d9efdb2012
Correct a few comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37034 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-14 14:31:17 +00:00
Chris Lattner
79cfddf646
Fix Transforms/GlobalOpt/2007-05-13-Crash.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37020 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-13 21:28:07 +00:00
Chris Lattner
7d8ed8a941
significantly improve debug output of lsr
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36996 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-11 22:40:34 +00:00
Dan Gohman
23d9d27c26
Fix typos.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36994 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-11 21:10:54 +00:00
Dan Gohman
c767844fc9
This patch extends the LoopUnroll pass to be able to unroll loops
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with unknown trip counts. This is left off by default, and a
command-line option enables it. It also begins to separate loop
unrolling into a utility routine; eventually it might be made usable
from other passes.
It currently works by inserting conditional branches between each
unrolled iteration, unless it proves that the trip count is a
multiple of a constant integer > 1, which it currently only does in
the rare case that the trip count expression is a Mul operator with
a ConstantInt operand. Eventually this information might be provided
by other sources, for example by a pass that peels/splits the loop
for this purpose.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36990 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-11 20:53:41 +00:00
Chris Lattner
3aea1bdca5
fix regressions from my previous checking, including
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Transforms/InstCombine/2006-12-08-ICmp-Combining.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36989 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-11 16:58:45 +00:00
Chris Lattner
8885887b9c
fix Transforms/InstCombine/2007-05-10-icmp-or.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36984 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-11 05:55:56 +00:00
Devang Patel
fd98dc9a76
Fix PR1333
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Testcases :
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049451.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049452.html
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36955 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-09 08:24:12 +00:00
Dan Gohman
1cc0096d55
Fix various whitespace inconsistencies.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36936 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-08 15:19:19 +00:00
Dan Gohman
f742c2363c
Correct the comment for ApproximateLoopSize to reflect what it actually does.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36935 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-08 15:14:19 +00:00
Dale Johannesen
6603a1bff0
Don't generate branch to entry block.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36917 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-08 01:01:04 +00:00
Chris Lattner
1ce6f8da72
Fix PR1395, by passing the ID correctly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36894 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06 23:13:56 +00:00
Nick Lewycky
ecd94c804a
Fix typo in comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36873 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06 13:37:16 +00:00
Chris Lattner
6f6f5125e2
Fix a bug in my previous patch
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36857 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06 07:24:03 +00:00
Chris Lattner
8c756c1fff
Implement Transforms/InstCombine/cast_ptr.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36809 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-05 22:41:33 +00:00
Chris Lattner
d717c1859a
wrap long lines
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36807 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-05 22:32:24 +00:00