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85 Commits

Author SHA1 Message Date
Nick Lewycky
5380e941ef Start adding and cleaning up comments. 
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
Nick Lewycky
a73d11efd4 Use maximal intersection algorithm exclusively. Fixes miscompile bug. 
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
Nick Lewycky
6e8eb7f075 Update the ValueRanges interface to use value numbers instead of Value*s. 
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
Nick Lewycky
29a05b6a71 Break "variable canonicalization" out of InequalityGraph and into its own class 
"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
Nick Lewycky
4390feb7ae Fix value ranges. 
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
Nick Lewycky
dea252689d Remove tabs. 
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 
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
Bill Wendling
851879c4cf Patches by Chuck Rose to unbreak V Studio builds. 
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
26042420d6 s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g 
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
Devang Patel
bec7647f98 s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g 
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
Nick Lewycky
ecd94c804a Fix typo in comment. 
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
Devang Patel
1997473cf7 Drop 'const' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-03 01:11:54 +00:00
Devang Patel
3e15bf33e0 Use 'static const char' instead of 'static const int'. 
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36652 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-02 21:39:20 +00:00
Devang Patel
794fd75c67 Do not use typeinfo to identify pass in pass manager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 21:15:47 +00:00
Zhou Sheng
c125c00e68 Using APInt more efficiently. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36475 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-26 16:42:07 +00:00
Owen Anderson
ab0e4d38f0 Undo my previous changes. Since my approach to this problem is being revised, 
this approach is no longer appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36421 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-25 04:18:54 +00:00
Owen Anderson
1b7f584fd8 Make PredicateSimplifier not use DominatorTree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36300 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-21 07:38:12 +00:00
Zhou Sheng
223d65b651 Make the operations of APInt variables more efficient. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36260 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-19 05:35:00 +00:00
Chris Lattner
e34e9a29dc fix long lines 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36031 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-14 23:32:02 +00:00
Nick Lewycky
ac4d664d45 Add support for cast instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35734 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-07 15:48:32 +00:00
Nick Lewycky
a995d920d5 Support NE inequality in ValueRanges. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35724 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-07 04:49:12 +00:00
Nick Lewycky
f3a9e368f6 Cleanup. Refactor out the applying of value ranges to its own method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35719 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-07 03:36:51 +00:00
Nick Lewycky
b01c77e137 Use TargetData to find the size of a type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35718 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-07 03:16:12 +00:00
Nick Lewycky
8ac40dd747 Strengthen icmp snuggling by doing 'compare-or-equal-to' to 'compare' 
first and then range testing second.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35715 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-07 02:30:14 +00:00
Nick Lewycky
27e4da93b6 Fix broken optimization disabled by a logic bug. 
Analyze GEPs. If the indices are all zero, transfer whether the pointer is
known to be not null through the GEP.

Add a few more cases for xor and shift instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35257 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 02:02:51 +00:00
Nick Lewycky
3f64b1ab1d Clean up this code and fix subtract miscompile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35146 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-18 22:58:46 +00:00
Nick Lewycky
1eda0f60d7 Propagate ValueRanges across equality. 
Add some more micro-optimizations: x * 0 = 0, a - x = a --> x = 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35138 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-18 01:09:32 +00:00
Anton Korobeynikov
1cc6452181 Silence warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35137 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-17 14:48:06 +00:00
Nick Lewycky
4c70875774 Add more comments and update to new asm syntax. 
Add new micro-optimizations.

Add icmp predicate snuggling. Given %x ULT 4, "icmp ugt %x, 2" becomes
"icmp eq %x, 3". This doesn't apply in any non-trivial cases yet due to missing
support for NE values in ValueRanges.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35119 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-16 02:37:39 +00:00
Nick Lewycky
e677a0b099 Add value ranges. Currently inefficient in both execution time and 
optimization power.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35058 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-10 18:12:48 +00:00
Jeff Cohen
ca5183d445 Unbreak VC++ build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34917 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-05 00:00:42 +00:00
Nick Lewycky
b6431da7be Translate bit operations to English. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34868 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 03:14:40 +00:00
Reid Spencer
af3e9468dc APIntify this pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34863 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 00:48:31 +00:00
Nick Lewycky
4535175328 Fix indenting, remove tabs. 
Learn from sext and zext. The destination value falls within the range of the
source type.

Generalize properties regarding constant ints.

Get smarter about marking blocks as unreachable. If 1 >= 2 in order for this
block to execute, then it isn't reachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33889 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-04 23:43:05 +00:00
Reid Spencer
6734b57d1b For PR1163: 
Make the Module's dependent library use a std::vector instead of SetVector
adjust #includes in .cpp files because SetVector.h is no longer included.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33855 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-04 00:40:42 +00:00
Nick Lewycky
6a08f918b6 Simplify names of lattice values. SGTUNE becomes SGT, for example. 
Fix initializeConstant, now initializeInt. Fixes major performance
bottleneck.

X == Y || X->DominatedBy(Y) is redundant. Remove the X == Y part.

Fix crasher in makeEqual where getOrInsertNode would add a new constant,
producing an NE relationship between the two members we're trying to make
equal. This now allows us to mark more BBs as unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33612 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-29 02:56:54 +00:00
Reid Spencer
7af9a13f3a For PR1094: 
Adjust the use of SetVector for changes in SetVector's interface.
Patch by Gordon Henriksen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33280 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-17 02:23:37 +00:00
Nick Lewycky
dd402588b5 Don't print address of ETNode. Print the DFSNumIn which uniquely identifies 
the basic block and is stable across runs in gdb or valgrind.

Make Node::update handle edges which dominate and are tighter than
existing edges.

Replace makeEqual's "squeeze theorem" code. Fixes miscompilation.

Gate the calls to defToOps and opsToDef. Before this, we were getting IG
edges about values which weren't even defined in the dominated area. This
reduces the size of the IG by about half.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33236 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-15 14:30:07 +00:00
Nick Lewycky
0be7f47735 "Default context" blocks can occur after a non-default one. This meant 
that properties were being applied where they didn't belong. Fixes crash
in new MiBench testcase.

Also mark debugging code as such in #ifdef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33177 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-13 02:05:28 +00:00
Nick Lewycky
28c5b1544a If we know that it's a constant being casted, propagate through the cast 
instruction. Doesn't work the other way though (can't recover bits that
have been truncated).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33104 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-12 01:23:53 +00:00
Nick Lewycky
c2a7d097f9 Clean up logic after ConstantBool removal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33096 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-12 00:02:12 +00:00
Reid Spencer
4fe16d607d Rename BoolTy as Int1Ty. Patch by Sheng Zhou. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33076 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-11 18:21:29 +00:00
Zhou Sheng
6b6b6ef167 For PR1043: 
Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33073 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-11 12:24:14 +00:00
Nick Lewycky
bc00fec835 Quiet compiler warning. The only reason the function is marked virtual 
is so that it can be called from inside a debugger.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33067 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-11 02:38:21 +00:00
Nick Lewycky
419c6f5ac8 New predicate simplifier! 
Please do not enable, there is still some known miscompile problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33066 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-11 02:32:38 +00:00
Reid Spencer
e4d87aa2de For PR950: 
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-23 06:05:41 +00:00
Chris Lattner
438e08e357 Convert more Statistic's over to STATISTIC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32692 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-19 21:49:03 +00:00
Bill Wendling
832171cb97 Removing even more <iostream> includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32320 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-07 20:04:42 +00:00
Chris Lattner
02fc40ebd3 add missing #include 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32280 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-06 18:14:47 +00:00
Chris Lattner
ac0b6ae358 Detemplatize the Statistic class. The only type it is instantiated with 
is 'unsigned'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32279 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-06 17:46:33 +00:00