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Commit Graph

3406 Commits

Author SHA1 Message Date
Devang Patel
937b07fb5e 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

llvm-svn: 40737
2007-08-02 15:25:57 +00:00
Chris Lattner
0111f62050 Enhance instcombine to be more aggressive about folding casts of
operations of casts.  This implements InstCombine/zext-fold.ll

llvm-svn: 40726
2007-08-02 06:11:14 +00:00
Chris Lattner
2cacb6cc56 Fix PR1575 and test/Transforms/CondProp/2007-08-01-InvalidRead.ll
llvm-svn: 40720
2007-08-02 04:47:05 +00:00
Devang Patel
f21f509c2c Undo previous check-in.
llvm-svn: 40698
2007-08-01 23:24:50 +00:00
Devang Patel
51c61e730a 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.

llvm-svn: 40695
2007-08-01 22:23:50 +00:00
Owen Anderson
7028dfaf9d Make non-local memdep not be recursive, and fix a bug on 403.gcc that this exposed.
llvm-svn: 40692
2007-08-01 22:01:54 +00:00
Dan Gohman
7dd04fb91c More explicit keywords.
llvm-svn: 40673
2007-08-01 15:32:29 +00:00
Owen Anderson
58e64df595 Rename FastDSE to just DSE.
llvm-svn: 40668
2007-08-01 06:36:51 +00:00
Owen Anderson
45499c55e5 Move FastDSE in to DeadStoreElimination.
llvm-svn: 40667
2007-08-01 06:30:51 +00:00
Owen Anderson
48e3b68d57 Remove old DSE.
llvm-svn: 40666
2007-08-01 06:30:10 +00:00
David Greene
f06a395bb9 New CallInst interface to address GLIBCXX_DEBUG errors caused by
indexing an empty std::vector.

Updates to all clients.

llvm-svn: 40660
2007-08-01 03:43:44 +00:00
Owen Anderson
89022c1367 Don't let the memory allocator outsmart GVN. ;-)
llvm-svn: 40655
2007-07-31 23:27:13 +00:00
Owen Anderson
9c996b3212 Fix a failure I accidentally caused in my last commit by mishandling the
removal of redundant phis.

llvm-svn: 40650
2007-07-31 20:18:28 +00:00
Lauro Ramos Venancio
abf6c6d469 Fix a bug in GetKnownAlignment of packed structs.
llvm-svn: 40649
2007-07-31 20:13:21 +00:00
Owen Anderson
d178c05c62 Fix a misoptimization in aha.
llvm-svn: 40642
2007-07-31 17:43:14 +00:00
Dan Gohman
7702c23d4a Use SCEVExpander::InsertCastOfTo instead of calling new IntToPtrInst
directly, because the insert point used by the SCEVExpander may vary
from what LSR originally computes.

llvm-svn: 40641
2007-07-31 17:22:27 +00:00
Devang Patel
5a3594de20 Add note.
llvm-svn: 40638
2007-07-31 16:52:25 +00:00
Devang Patel
84e123116e Loop unswitch preserves dom info.
Use simple analysis interface to preserve analysis info maintained by other loop passes.

llvm-svn: 40627
2007-07-31 08:03:26 +00:00
Devang Patel
67b3734f28 Implement Simple Analysis interfaces - cloneBasicBlockAnalysis and deleteAnalysisValue.
llvm-svn: 40626
2007-07-31 08:01:41 +00:00
Devang Patel
069a8d9716 If loop can be unswitched again, then do it yourself.
llvm-svn: 40609
2007-07-30 23:07:10 +00:00
Owen Anderson
c7545280a2 Avoid potential iterator invalidation problems.
llvm-svn: 40607
2007-07-30 21:26:39 +00:00
Devang Patel
81c015b472 Remove dead code.
llvm-svn: 40606
2007-07-30 21:10:44 +00:00
Devang Patel
1b2732c880 LCSSA preserves dom info.
llvm-svn: 40604
2007-07-30 20:23:45 +00:00
Devang Patel
84144042b2 Loop Rotation pass preserves dominator tree and frontier.
llvm-svn: 40603
2007-07-30 20:22:53 +00:00
Devang Patel
2e8466c22a LICM preserves scalar evolution and dom frontier.
llvm-svn: 40602
2007-07-30 20:19:59 +00:00
Reid Spencer
eb6f2d338a Fix a typo/thinko.
llvm-svn: 40599
2007-07-30 19:53:57 +00:00
Owen Anderson
fff534d147 Use more caching when computing non-local dependence. This makes bzip2 not
use up the entire 32-bit address space.

llvm-svn: 40596
2007-07-30 17:29:24 +00:00
Owen Anderson
a8d0a6ee40 Fix a bug caused by indiscriminantly asking for the dominators of a predecessor.
llvm-svn: 40595
2007-07-30 16:57:08 +00:00
Devang Patel
a03e82d7ee Use SmallPtrSet.
llvm-svn: 40560
2007-07-27 18:34:27 +00:00
Chuck Rose III
4a3a018844 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.

llvm-svn: 40558
2007-07-27 18:26:35 +00:00
Devang Patel
4dea53597a Fix thinko. Update return status appropriately.
llvm-svn: 40546
2007-07-26 20:21:42 +00:00
Owen Anderson
f2b10d3de3 Fix a couple more bugs in the phi construction by pulling in code that does
almost the same things from LCSSA.

llvm-svn: 40540
2007-07-26 18:26:51 +00:00
Dan Gohman
298f3fd9b7 Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDead
to Instruction::mayWriteToMemory, fixing a FIXME, and helping
various places that call mayWriteToMemory directly.

llvm-svn: 40533
2007-07-26 16:06:08 +00:00
Dan Gohman
fd392a7a51 Remove a bogus return statement, what appears to have been a pasto
from Relation::contradicts in Relation::incorporate.

llvm-svn: 40531
2007-07-26 15:29:35 +00:00
Owen Anderson
ed75133924 Fix what is _hopefully_ the last corner case for loops.
llvm-svn: 40503
2007-07-25 23:54:42 +00:00
Owen Anderson
1e53615073 My last commit was not correct for nested loops. Fix it, and add a testcase for it.
llvm-svn: 40498
2007-07-25 22:19:40 +00:00
Owen Anderson
ce9d73dbe7 Fix an infinite loop on 300.twolf.
llvm-svn: 40497
2007-07-25 22:03:06 +00:00
Owen Anderson
522f7a7608 Fix a bug that was causing GVN to crash on 252.eon.
llvm-svn: 40494
2007-07-25 21:13:41 +00:00
Owen Anderson
6a1a8d05b8 Add basic support for performing whole-function RLE.
Note: This has not yet been thoroughly tested.  Use at your own risk.

llvm-svn: 40489
2007-07-25 19:57:03 +00:00
Devang Patel
d7b401bafd Add BasicInliner interface.
This interface allows clients to inline bunch of functions with module
level call graph information.:wq

llvm-svn: 40486
2007-07-25 18:00:25 +00:00
Owen Anderson
eb9f1b612c Add a GVN pass, using the value numbering code I developed for GVNPRE and the
load elimination code from RedundantLoadElimination.

llvm-svn: 40469
2007-07-24 17:55:58 +00:00
Owen Anderson
5969a3cb91 Rename a lot of things to change FastDLE to RedundantLoadElimination.
llvm-svn: 40457
2007-07-24 00:17:04 +00:00
Owen Anderson
2aab0eafe9 Rename FastDLE as RedundantLoadElimination.
llvm-svn: 40456
2007-07-24 00:08:38 +00:00
Owen Anderson
0a79ada820 Don't delete volatile loads. Doing so is not safe.
llvm-svn: 40448
2007-07-23 22:05:54 +00:00
Owen Anderson
bd3360e856 Add FastDLE, the load-elimination counterpart of FastDSE.
llvm-svn: 40445
2007-07-23 21:48:08 +00:00
Owen Anderson
d3a8c81c04 Fix file header.
llvm-svn: 40440
2007-07-23 18:30:37 +00:00
Chris Lattner
914de64a0a completely remove a transformation that is unsafe in the face of
undefs.

llvm-svn: 40439
2007-07-23 17:10:17 +00:00
Devang Patel
f45fc256e1 Apply temporary work around to fix llvm mis-compilation
reported in PR 1556.

llvm-svn: 40133
2007-07-21 00:34:29 +00:00
Chris Lattner
9663eb4a5b this xform is already done by the constant folder.
llvm-svn: 40124
2007-07-20 22:06:41 +00:00
Dan Gohman
87107326f6 Optimize alignment of loads and stores.
llvm-svn: 40102
2007-07-20 16:34:21 +00:00