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Author SHA1 Message Date
Nick Lewycky
65199a504b Inform ScalarEvolutions that we're deleting Values. 
This is the obviously correct part of the fix for PR1487.

llvm-svn: 37457
 2007-06-06 03:51:56 +00:00
Evan Cheng
4c42a30bad If a unconditional branch is added to branch to the false path during ifcvt, the predicated block cannot be iteratively ifcvted. 
llvm-svn: 37456
 2007-06-06 02:08:52 +00:00
Owen Anderson
501e5873d4 Add simple full redundancy elimination. 
llvm-svn: 37455
 2007-06-06 01:27:49 +00:00
Chris Lattner
a874ddba43 Fix PR1495 and CodeGen/X86/2007-06-05-LSR-Dominator.ll 
llvm-svn: 37454
 2007-06-06 01:23:55 +00:00
Chris Lattner
a1ad601255 add accessor 
llvm-svn: 37453
 2007-06-06 01:22:09 +00:00
Chris Lattner
ea380b16b7 new testcase for PR1495 
llvm-svn: 37452
 2007-06-06 01:21:46 +00:00
Evan Cheng
cc7186df2b Minor statistics counting bug. 
llvm-svn: 37451
 2007-06-06 01:12:44 +00:00
Devang Patel
782ec1fbbb Break friendship. 
llvm-svn: 37450
 2007-06-06 00:59:48 +00:00
Evan Cheng
2eefb6f4c3 Fix a couple of typos and be smarter about order of blocks when ifcvt a diamond. 
llvm-svn: 37449
 2007-06-06 00:57:55 +00:00
Devang Patel
59091c81b6 Rename. 
llvm-svn: 37448
 2007-06-06 00:49:02 +00:00
Devang Patel
43c684a62d Simplify class hierarchy. 
llvm-svn: 37447
 2007-06-06 00:46:36 +00:00
Devang Patel
61661c6774 Avoid non-trivial loop unswitching while optimizing for size. 
llvm-svn: 37446
 2007-06-06 00:21:03 +00:00
Chris Lattner
9a57dc1923 Fix a user-reported error building with GCC 3.4.4 on Cygwin. 
llvm-svn: 37445
 2007-06-05 23:49:06 +00:00
Evan Cheng
3db28ad9f2 Fix diamond shape ifcvt bugs. 
llvm-svn: 37444
 2007-06-05 23:46:14 +00:00
Owen Anderson
3aa2107b02 Fix a misunderstanding of the algorithm. Really, we should be tracking values 
and expression separately.  We can get around this, however, by only keeping
opaque values in TMP_GEN.

llvm-svn: 37443
 2007-06-05 23:46:12 +00:00
Owen Anderson
3c9c199f2d Don't leak memory. 
llvm-svn: 37442
 2007-06-05 22:11:49 +00:00
Evan Cheng
acf719bf83 ReplaceUsesOfBlockWith() can modify the predecessors list. 
llvm-svn: 37441
 2007-06-05 22:03:53 +00:00
Evan Cheng
f2a2a5a025 Do not ifcvt if either true / false path is a backedge. Not profitable in almost all cases. 
llvm-svn: 37440
 2007-06-05 20:38:42 +00:00
Devang Patel
606fb412b0 Fix PR 1497 
Use separate pass id for CFGOnlyPrinter.

llvm-svn: 37439
 2007-06-05 20:24:36 +00:00
Devang Patel
68d03ac6b9 New test. 
llvm-svn: 37438
 2007-06-05 20:23:20 +00:00
Evan Cheng
886c1f49ca Print predicate of the second instruction of the two-piece constant MI. 
llvm-svn: 37437
 2007-06-05 18:55:18 +00:00
Owen Anderson
25a0068940 Fix a small bug, some 80 cols violations, and add some more debugging output. 
llvm-svn: 37436
 2007-06-05 17:31:23 +00:00
Dan Gohman
08d77288c1 Allow insertelement, extractelement, and shufflevector to be hoisted/sunk 
by LICM.

llvm-svn: 37435
 2007-06-05 16:05:55 +00:00
Evan Cheng
820e352652 PIC label asm printing cosmetic changes. 
llvm-svn: 37434
 2007-06-05 07:36:38 +00:00
Evan Cheng
d495b2f9b9 I had a senior moment. 
llvm-svn: 37433
 2007-06-05 07:05:25 +00:00
Zhou Sheng
09b12fef98 Commit first round work of PR1373. "noalias" is now fully supported in 
VMCore, BitCode, and Assembly. Documentation and test case paramattrs.ll
updated also.

llvm-svn: 37432
 2007-06-05 05:28:26 +00:00
Evan Cheng
ba4c97df9f New test. 
llvm-svn: 37431
 2007-06-05 01:45:08 +00:00
Evan Cheng
a7f7c92dc9 If the predicated block requires an early exit, end the block there and add a unconditional branch to false block. AnalyzeBranch() does not understand early exits. 
llvm-svn: 37430
 2007-06-05 01:31:40 +00:00
Evan Cheng
7b113514d4 Fix some subtle bugs: bug during succeessor copying; incorrectly updating states of ifcvted blocks. 
llvm-svn: 37429
 2007-06-05 00:07:37 +00:00
Bill Wendling
d2b1274d1b Patches by Chuck Rose to unbreak V Studio builds. 
Thanks Chuck!

llvm-svn: 37428
 2007-06-04 23:52:59 +00:00
Dale Johannesen
a68662e4a4 Tail merging wasn't working for predecessors of landing pads. PR 1496. 
llvm-svn: 37427
 2007-06-04 23:52:54 +00:00
Devang Patel
ba29e5e591 s/ETNode::getChildren/ETNode::getETNodeChildren/g 
llvm-svn: 37426
 2007-06-04 23:45:02 +00:00
Owen Anderson
dde6943d82 Don't use std::set_difference when the two sets are sorted differently. Compute 
the difference manually instead.

This allows GVNPRE to produce correct analysis for the example in the GVNPRE
paper.

llvm-svn: 37425
 2007-06-04 23:34:56 +00:00
Owen Anderson
0cab4450c3 Fix a bunch of small bugs, and improve the debugging output significantly. 
llvm-svn: 37424
 2007-06-04 23:28:33 +00:00
Chris Lattner
7726564331 When rebuilding constant structs, make sure to honor the isPacked bit. 
This fixes PR1491 and GlobalOpt/2007-06-04-PackedStruct.ll

llvm-svn: 37423
 2007-06-04 22:23:42 +00:00
Chris Lattner
fdf98ca07f new testcase for PR1491 
llvm-svn: 37422
 2007-06-04 22:23:17 +00:00
Evan Cheng
8728a6c3fd Global ctors / dtors alignment shouldn't be hard-coded at 4. e.g. It could be 8 for 64-bit targets. 
llvm-svn: 37421
 2007-06-04 20:39:18 +00:00
Evan Cheng
79f53ff66d Forgot to check for if iterator reached the end. 
llvm-svn: 37420
 2007-06-04 20:33:36 +00:00
Evan Cheng
fdfe615197 Misuse of hasExternalLinkage(), should be checking isDeclaration(). 
llvm-svn: 37419
 2007-06-04 18:54:57 +00:00
Owen Anderson
2043bb65a4 Make phi_translate correct. 
llvm-svn: 37418
 2007-06-04 18:05:26 +00:00
Devang Patel
3ad9b9f927 Add FIXMEs. 
llvm-svn: 37417
 2007-06-04 17:38:00 +00:00
Devang Patel
8faaa37b1a Remove unused method. 
llvm-svn: 37416
 2007-06-04 16:49:36 +00:00
Devang Patel
74785c1f3c s/DominatorTree::createNewNode/DominatorTree::addNewBlock/g 
llvm-svn: 37415
 2007-06-04 16:43:25 +00:00
Devang Patel
26d8a86df7 Add basic block level interface to change immediate dominator 
and create new node.

llvm-svn: 37414
 2007-06-04 16:22:33 +00:00
Dan Gohman
e6c827b537 Pass the DAG to SDNode::dump to let it do more detailed dumps in some cases. 
llvm-svn: 37413
 2007-06-04 16:17:33 +00:00
Dan Gohman
4ea79a66c2 Remove the operator<< for MVT::ValueType in preparation for MVT::ValueType 
being changed from an enum to an integer type, which can't have a custom
operator<< overload.

llvm-svn: 37412
 2007-06-04 16:11:03 +00:00
Dan Gohman
b69321ca1d Resolve implicit alignment before computing the FoldingSet information so 
that the CSE map always contains explicit alignment information. This allows
more loads to be CSE'd when there is a mix of explicit-alignment loads and
implicit-alignment loads.

Also, in SelectionDAG::FindModifiedNodeSlot, add the operands to the
FoldingSetNodeID before the load/store information instead of after, so
that it matches what is done elsewhere.

llvm-svn: 37411
 2007-06-04 15:49:41 +00:00
Devang Patel
917048baee Fix LLVM build on NetBSD. Patch by Neil Booth. 
llvm-svn: 37410
 2007-06-04 15:28:57 +00:00
Evan Cheng
c86e3086da Let IfConverter loose. Allow more aggressive subsumptions; reorder basic blocks to expose more ifcvt opportunities; code clean up and fixes. 
llvm-svn: 37409
 2007-06-04 06:47:22 +00:00
Evan Cheng
0dbe4d04db Move ReplaceUsesOfBlockWith() out of BranchFolding into a MachineBasicBlock general facility. 
llvm-svn: 37408
 2007-06-04 06:44:01 +00:00