7f903681ac
alternate fix for PR5258 which avoids worklist problems, with reduced testcase.
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llvm-svn: 84667
2009-10-20 20:27:49 +00:00
cf10ec951d
Fix PR5258, jump-threading creating invalid PHIs.
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When an incoming value for a PHI is updated, we must also updated all other
incoming values for the same BB to match, otherwise we create invalid PHIs.
llvm-svn: 84638
2009-10-20 15:42:00 +00:00
8f986672a1
Fix SplitBlockPredecessors' LoopInfo updating code to handle the case
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where a loop's header is being split and it has predecessors which are not
contained by the most-nested loop which contains the loop.
This fixes PR5235.
llvm-svn: 84505
2009-10-19 16:04:50 +00:00
511d2e26dd
Change instnamer to name arguments "arg" instead of "tmp" for clarity, and
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to name basic blocks "bb" instead of "BB", for consistency.
llvm-svn: 84502
2009-10-19 14:47:32 +00:00
88b36f1140
Simplify some code (first hunk) and fix PR5208 (second hunk) by
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updating the callgraph when introducing a call.
llvm-svn: 84310
2009-10-17 05:39:39 +00:00
a3aaf85e23
Remove MallocInst from LLVM Instructions.
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llvm-svn: 84299
2009-10-17 01:18:07 +00:00
0058c7bcb0
Strip trailing white space.
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llvm-svn: 84256
2009-10-16 15:20:13 +00:00
113d959f1b
Update CMake file.
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llvm-svn: 84001
2009-10-13 18:48:07 +00:00
54463e837a
Commit the removal of this file, which is now moved to lib/Analysis.
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llvm-svn: 83999
2009-10-13 18:37:20 +00:00
5b3e05bcaa
Start refactoring the inline cost estimation code so that it can be used
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for purposes other than inlining.
llvm-svn: 83997
2009-10-13 18:24:11 +00:00
19788ca686
change simplifycfg to not duplicate 'unwind' instructions. Hopefully
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this will increase the likelihood of common code getting sunk towards
the unwind.
llvm-svn: 83996
2009-10-13 18:13:05 +00:00
71d353dd48
rewrite LCSSA to use SSAUpdate, to only return true if it modifies
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the IR, and to implement the FIXME'd optimization.
llvm-svn: 83748
2009-10-11 02:53:37 +00:00
101dde30ed
clean up and simplify some code. Don't use setvector when things will be
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inserted only once, just use vector. Don't compute ExitBlocks unless we
need it, change std::sort to array_pod_sort.
llvm-svn: 83747
2009-10-11 01:07:15 +00:00
9c382cebc5
add a simple helper method.
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llvm-svn: 83745
2009-10-10 23:41:48 +00:00
249265de06
add ability for clients of SSAUpdater to find out about the
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PHI nodes inserted.
llvm-svn: 83744
2009-10-10 23:15:24 +00:00
67cdd8b567
add the ability to get a rewritten value from the middle of a block,
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not just at the end. Add a big comment explaining when this could
be useful (which never happens for jump threading).
llvm-svn: 83741
2009-10-10 23:00:11 +00:00
e474a8d3a7
rename GetValueInBlock -> GetValueAtEndOfBlock to better reflect
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what it does.
llvm-svn: 83740
2009-10-10 22:41:58 +00:00
65e69a77e1
use a typedef instead of spelling out an insane type. Yay for auto someday.
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llvm-svn: 83707
2009-10-10 09:09:20 +00:00
60d4e69c81
Implement an efficient and fully general SSA update mechanism that
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works on unstructured CFGs. This implements PR217, our oldest open PR.
llvm-svn: 83705
2009-10-10 09:04:27 +00:00
f30a2b0c86
random tidying
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llvm-svn: 83701
2009-10-10 06:22:45 +00:00
96a5b87ae2
Use names instead of numbers for some of the magic
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constants used in inlining heuristics (especially
those used in more than one file). No functional change.
llvm-svn: 83675
2009-10-09 21:42:02 +00:00
e666bc9f64
Add FreeInst to the "is a call" check for Insts that are calls, but
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not intrinsics.
llvm-svn: 83441
2009-10-07 00:54:08 +00:00
6ba26317ce
While we still have a MallocInst treat it as a call like any other
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for inlining.
When MallocInst goes away this code will be subsumed as part of
calls and work just fine...
llvm-svn: 83434
2009-10-07 00:02:18 +00:00
9ed7b16bf3
Introduce and use convenience methods for getting pointer types
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where the element is of a basic builtin type. For example, to get
an i8* use getInt8PtrTy.
llvm-svn: 83379
2009-10-06 15:40:36 +00:00
e525d9ddc0
Remove an unnnecessary LLVMContext argument in
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ConstantFoldLoadThroughGEPConstantExpr.
llvm-svn: 83311
2009-10-05 16:36:26 +00:00
b5049bebb3
Do away with the strange use of BitVectors in SSI, and just use normal sets. This makes the code much more C++/LLVM-ish.
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llvm-svn: 83286
2009-10-04 18:49:55 +00:00
286feb16a9
Fix a typo in the comment.
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llvm-svn: 83283
2009-10-04 17:52:13 +00:00
a62bf10651
SSI needs to require DT and DF transitively, since it uses them outside of its runOnFunction.
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Similarly, it can be marked setPreservesAll, since it does no work in its runOnFunction.
llvm-svn: 83282
2009-10-04 17:47:39 +00:00
ea0bb8f555
Fix this code so that it doesn't try to iterate through a std::vector
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while calling changeImmediateDominator, which removes elements from the
vector. This fixes PR5097.
llvm-svn: 83166
2009-09-30 20:54:16 +00:00
7d3b0be05b
Remove a redundant #ifndef and add an assertion string.
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llvm-svn: 82991
2009-09-28 14:38:19 +00:00
9a7320c711
Convert LoopSimplify and LoopExtractor from FunctionPass to LoopPass.
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llvm-svn: 82990
2009-09-28 14:37:51 +00:00
5abb1e4cd2
calls are already handled, malloc doesn't need a special case.
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llvm-svn: 82931
2009-09-27 21:33:46 +00:00
42fb7452df
Instruction::clone does not need to take an LLVMContext&. Remove that and
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update all the callers.
llvm-svn: 82889
2009-09-27 07:38:41 +00:00
fb1b55bc9c
A minor improvment in accuracy to inline cost
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computation, and some cosmetics.
llvm-svn: 82660
2009-09-23 22:05:24 +00:00
e3ce1e2a37
tidy up
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llvm-svn: 82488
2009-09-21 22:26:02 +00:00
5d034499ad
Enhance transform passes so that they apply the same tranforms to malloc calls as to MallocInst.
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Reviewed by Dan Gohman.
llvm-svn: 82300
2009-09-18 22:35:49 +00:00
788eaabd18
Update malloc call creation code (AllocType is now the element type of the malloc, not the resulting type).
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In getMallocArraySize(), fix bug in the case that array size is the product of 2 constants.
Extend isArrayMalloc() and getMallocArraySize() to handle case where malloc is used as char array.
Ensure that ArraySize in LowerAllocations::runOnBasicBlock() is correct type.
Extend Instruction::isSafeToSpeculativelyExecute() to handle malloc calls.
Add verification for malloc calls.
Reviewed by Dan Gohman.
llvm-svn: 82257
2009-09-18 19:20:02 +00:00
f8cb758ba8
Preserve ProfileInfo during CodeGenPrepare.
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llvm-svn: 82034
2009-09-16 09:26:52 +00:00
dddf5dcdaf
Correctly handle the case where a comparison is created in one BasicBlock and
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used by a terminator in another.
llvm-svn: 81437
2009-09-10 07:02:09 +00:00
1d9d4bdc99
Add malloc call utility functions. Patch by Victor Hernandez.
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llvm-svn: 81426
2009-09-10 04:36:43 +00:00
ec4557f324
Fix SplitCriticalEdge to properly update LCSSA form when splitting a
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loop exit edge -- new PHIs may be needed not only for the additional
splits that are made to preserve LoopSimplify form, but also for the
original split. Factor out the code that inserts new PHIs so that it
can be used for both. Remove LoopRotation.cpp's code for manually
updating LCSSA form, as it is now redundant. This fixes PR4934.
llvm-svn: 81363
2009-09-09 18:18:18 +00:00
4c0b2847ef
Preserve ProfileInfo.
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llvm-svn: 81360
2009-09-09 17:53:39 +00:00
3ddbc242fb
Re-apply r80926, with fixes: keep the domtree informed of new blocks
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that get created during loop unswitching, and fix SplitBlockPredecessors'
LCSSA updating code to create new PHIs instead of trying to just move
existing ones.
Also, optimize Loop::verifyLoop, since it gets called a lot. Use
searches on a sorted list of blocks instead of calling the "contains"
function, as is done in other places in the Loop class, since "contains"
does a linear search. Also, don't call verifyLoop from LoopSimplify or
LCSSA, as the PassManager is already calling verifyLoop as part of
LoopInfo's verifyAnalysis.
llvm-svn: 81221
2009-09-08 15:45:00 +00:00
66d8555f7e
Fix comment.
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llvm-svn: 81138
2009-09-06 22:20:54 +00:00
904199547b
Revert r80926. It causes loop unswitch assertion and slow down some JIT tests significantly.
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llvm-svn: 81101
2009-09-06 02:26:10 +00:00
4c1bdcf5d7
Add a verifyAnalysis to LoopInfo, LoopSimplify, and LCSSA form that verify
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that these passes are properly preserved.
Fix several transformation passes that claimed to preserve LoopSimplify
form but weren't.
llvm-svn: 80926
2009-09-03 16:31:42 +00:00
22571485b3
Change PHINode::hasConstantValue to have a DominatorTree argument
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instead of a bool argument, and to do the dominator check itself.
This makes it eaiser to use when DominatorTree information is
available.
llvm-svn: 80920
2009-09-03 15:34:35 +00:00
2d60e1ec0c
back out my recent commit (r80858), it seems to break self-hosting buildbot's stage 2 configure
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llvm-svn: 80871
2009-09-03 02:02:59 +00:00
14dfba6d66
re-commit r66920 (which has been backed out in r66953) I may have more luck this time. I'll back out if needed...
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llvm-svn: 80858
2009-09-03 00:18:58 +00:00
8900f3ec57
remove a bunch of explicit code previously needed to update the
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callgraph. This is now dead because RAUW does the job.
llvm-svn: 80703
2009-09-01 18:44:06 +00:00
Chris Lattner