d9bd0bc3e2
Add value ranges. Currently inefficient in both execution time and
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optimization power.
llvm-svn: 35058
2007-03-10 18:12:48 +00:00
b622c11f77
Unbreak VC++ build.
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llvm-svn: 34917
2007-03-05 00:00:42 +00:00
db42295ff2
Translate bit operations to English.
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llvm-svn: 34868
2007-03-03 03:14:40 +00:00
c34dedf686
APIntify this pass.
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llvm-svn: 34863
2007-03-03 00:48:31 +00:00
15245953a5
Fix indenting, remove tabs.
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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.
llvm-svn: 33889
2007-02-04 23:43:05 +00:00
3f4e6e84dc
For PR1163:
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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.
llvm-svn: 33855
2007-02-04 00:40:42 +00:00
56639800c9
Simplify names of lattice values. SGTUNE becomes SGT, for example.
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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.
llvm-svn: 33612
2007-01-29 02:56:54 +00:00
a8a1547370
For PR1094:
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Adjust the use of SetVector for changes in SetVector's interface.
Patch by Gordon Henriksen.
llvm-svn: 33280
2007-01-17 02:23:37 +00:00
6ce36cff3a
Don't print address of ETNode. Print the DFSNumIn which uniquely identifies
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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.
llvm-svn: 33236
2007-01-15 14:30:07 +00:00
4294446fcb
"Default context" blocks can occur after a non-default one. This meant
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that properties were being applied where they didn't belong. Fixes crash
in new MiBench testcase.
Also mark debugging code as such in #ifdef.
llvm-svn: 33177
2007-01-13 02:05:28 +00:00
ee32ee0250
If we know that it's a constant being casted, propagate through the cast
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instruction. Doesn't work the other way though (can't recover bits that
have been truncated).
llvm-svn: 33104
2007-01-12 01:23:53 +00:00
4a74a75bbb
Clean up logic after ConstantBool removal.
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llvm-svn: 33096
2007-01-12 00:02:12 +00:00
542964f55b
Rename BoolTy as Int1Ty. Patch by Sheng Zhou.
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llvm-svn: 33076
2007-01-11 18:21:29 +00:00
75b871fb1e
For PR1043:
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Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.
llvm-svn: 33073
2007-01-11 12:24:14 +00:00
5d6ede524a
Quiet compiler warning. The only reason the function is marked virtual
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is so that it can be called from inside a debugger.
llvm-svn: 33067
2007-01-11 02:38:21 +00:00
2fc338f923
New predicate simplifier!
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Please do not enable, there is still some known miscompile problem.
llvm-svn: 33066
2007-01-11 02:32:38 +00:00
266e42b312
For PR950:
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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.
llvm-svn: 32751
2006-12-23 06:05:41 +00:00
0e5255bdc6
Convert more Statistic's over to STATISTIC
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llvm-svn: 32692
2006-12-19 21:49:03 +00:00
22e978a736
Removing even more <iostream> includes.
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llvm-svn: 32320
2006-12-07 20:04:42 +00:00
f06bb658a8
add missing #include
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llvm-svn: 32280
2006-12-06 18:14:47 +00:00
700b873130
Detemplatize the Statistic class. The only type it is instantiated with
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is 'unsigned'.
llvm-svn: 32279
2006-12-06 17:46:33 +00:00
cc08c83186
Unbreak VC++ build.
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llvm-svn: 32113
2006-12-02 02:22:01 +00:00
09b7e4d3ab
Update to new predicate simplifier VRP design. Fixes PR966 and PR967.
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Remove predicate simplifier from default gcc3 pipeline. New design is too
slow to enable by default.
Add new testcases for problems encountered in development.
llvm-svn: 31895
2006-11-22 23:49:16 +00:00
7d6f3db3e2
Unbreak VC++ build.
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llvm-svn: 31464
2006-11-05 19:31:28 +00:00
67bad5adbc
Remove commented line from earlier debugging.
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llvm-svn: 31460
2006-11-05 14:19:40 +00:00
7eb55b395f
For PR950:
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Replace the REM instruction with UREM, SREM and FREM.
llvm-svn: 31369
2006-11-02 01:53:59 +00:00
7e80b0b31e
For PR950:
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Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.
llvm-svn: 31195
2006-10-26 06:15:43 +00:00
5b979ae531
Fix 2006-10-25-AddSetCC. A relational operator (like setlt) can never
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produce an EQ property.
llvm-svn: 31193
2006-10-26 02:35:18 +00:00
9d17c82a26
Resurrect r1.25.
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Fix and comment the "or", "and" and "xor" transformations.
llvm-svn: 31189
2006-10-25 23:48:24 +00:00
53f53db919
hide symbols properly
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llvm-svn: 31184
2006-10-25 21:14:31 +00:00
dc7b9beb20
Revert back to r1.21, which was the last revision of predsimplify that
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passes llvm-gcc bootstrap.
llvm-svn: 31146
2006-10-24 00:36:21 +00:00
53b4158448
Remove the Backwards operation. Resolving now works at the time when a
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property is added by running through the list of uses of the value and
adding resolved properties to the property set.
llvm-svn: 31126
2006-10-23 01:56:02 +00:00
6f5c30fcec
Fix similar missing optimization opportunity in XOR.
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llvm-svn: 31123
2006-10-22 22:22:58 +00:00
af2b0571d0
Whoops! Add missing NULL check.
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llvm-svn: 31121
2006-10-22 21:38:24 +00:00
2c734f3fc1
Handle "if ((x|y) != 0)" for ints like we do for bools. Fixes missed
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optimization opportunity pointed out by Chris Lattner.
llvm-svn: 31118
2006-10-22 21:36:41 +00:00
f345008339
AllocaInst can't return a null pointer. Fixes missed optimization
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opportunity pointed out by Andrew Lewycky.
llvm-svn: 31115
2006-10-22 19:53:27 +00:00
77e030bca9
Replace custom dispatch code with two uses of InstVisitor. Improves
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compile-time performance.
llvm-svn: 30896
2006-10-12 02:02:44 +00:00
58a910dff5
Simplify logic further.
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Ensure that we copy KnownProperties before calling visitBasicBlock, else
we may leak properties into blocks where they don't belong.
llvm-svn: 30705
2006-10-03 17:36:01 +00:00
1d00f3e144
Simplify, now that predsimplify depends on break-crit-edges.
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Fix SwitchInst where dest-block is the same as one of the cases.
llvm-svn: 30700
2006-10-03 15:19:11 +00:00
755f801adc
Move break-crit-edges before the predicate simplifier. Allows us to
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optimize in more cases.
llvm-svn: 30699
2006-10-03 14:52:23 +00:00
6ab03f6a08
Eliminate ConstantBool::True and ConstantBool::False. Instead, provide
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ConstantBool::getTrue() and ConstantBool::getFalse().
llvm-svn: 30665
2006-09-28 23:35:22 +00:00
059c79264f
Style changes only. Remove dead code, fix a comment.
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llvm-svn: 30588
2006-09-23 15:13:08 +00:00
fde9c308b2
Don't rewrite ConstantExpr::get.
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llvm-svn: 30552
2006-09-21 01:05:35 +00:00
d74c55f483
Once we're down to "setcc type constant1, constant2", at least come up
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with the right answer.
llvm-svn: 30550
2006-09-20 23:02:24 +00:00
cfff1c3f86
Use a total ordering to compare instructions.
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Fixes infinite loop in resolve().
llvm-svn: 30540
2006-09-20 17:04:01 +00:00
b9c5483a93
Walk down the dominator tree instead of the control flow graph. That means
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that we can't modify the CFG any more, at least not until it's possible
to update the dominator tree (PR217).
llvm-svn: 30469
2006-09-18 21:09:35 +00:00
12efffc96b
Add some more consistency checks.
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llvm-svn: 30305
2006-09-13 19:32:53 +00:00
51ce8d6b46
Fix unionSets so that it can merge correctly.
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llvm-svn: 30304
2006-09-13 19:24:01 +00:00
3a4dc7b489
Erase dead instructions.
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llvm-svn: 30298
2006-09-13 18:55:37 +00:00
e94f42a740
Skip the linear search if the answer is already known.
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llvm-svn: 30251
2006-09-11 17:23:34 +00:00
Nick Lewycky