Dan Gohman
0ad2c7ace8
Various optimizations. Don't compare two loops' depths
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when they are the same loop. Don't compare two instructions'
loop depths when they are in the same block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111045 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13 21:24:58 +00:00
Dan Gohman
9cba97886c
When testing whether one loop contains another, test this directly
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rather than testing whether the loop contains the other's header.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111039 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13 20:23:25 +00:00
Dan Gohman
9f1fb42b7e
Add a const.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111038 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13 20:17:27 +00:00
Dan Gohman
58a85b96b8
When creating a symmetric SCEV with a constant operand, put
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the constant operand on the left, as that's where ScalarEvolution
will end up canonicalizing to.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13 20:17:14 +00:00
Dan Gohman
71c4144076
An add recurrence is loop-invariant in any loop inside of its
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associated loop. This avoids potentially expensive traversals
of the add recurrence's operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111034 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13 20:11:39 +00:00
Dan Gohman
727356fc7d
Optimize ScalarEvolution::getAddExpr's operand factoring code by
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having it finish processing all of the muliply operands before
starting the whole getAddExpr process over again, instead of
immediately after the first simplification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110916 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12 15:00:23 +00:00
Dan Gohman
918e76b8b5
Hoist some loop-invariant code out of a hot loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110915 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12 14:52:55 +00:00
Dan Gohman
dc7692b1ad
Optimize ScalarEvolution::getAddExpr's duplicate operand detection
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by having it finish processing the whole operand list before
starting the whole getAddExpr process over again, instead of
immediately after the first duplicate is found.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110914 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12 14:46:54 +00:00
Devang Patel
ebd53742c6
Even if a variable has constant value all the time, it is still a variable in gdb's eyes.
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Tested by scope.exp in gdb testsuite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11 23:17:54 +00:00
Owen Anderson
cf6abd2486
Fix a subtle use-after-free issue.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110863 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11 22:36:04 +00:00
Dan Gohman
bd4d66d56a
Make LoopPass::getContainedPass return a LoopPass* instead of a Pass*
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and remove casts from all its callers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110848 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11 20:34:43 +00:00
Owen Anderson
2d0f2470ff
Improve indentation.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110778 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11 04:24:25 +00:00
Dan Gohman
4ee87398e8
When analyzing loop exit conditions combined with and and or, don't
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make any assumptions about when the two conditions will agree on when
to permit the loop to exit. This fixes PR7845.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110758 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11 00:12:36 +00:00
Dan Gohman
af08a36bd6
Rename and reorder the arguments to isImpliedCond, for consistency and clarity.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110750 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 23:46:30 +00:00
Owen Anderson
625051be7e
Now that we're using ConstantRange to represent potential values, make use of that represenation to
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create constraints from comparisons other than eq/neq.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 23:20:01 +00:00
Devang Patel
6bf058c9aa
Add missing argument. CreateCompositeTypeEx() users, please verify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110717 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 20:22:49 +00:00
Owen Anderson
9f01406179
Switch over to using ConstantRange to track integral values.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110714 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 20:03:09 +00:00
Devang Patel
e7e5a0f6fb
Do not forget debug info for enums. Use named mdnode to keep track of these types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110712 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 20:01:20 +00:00
Tobias Grosser
73362c820b
RegionInfo: Do not assert if a BB is not part of the dominance tree.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 09:54:35 +00:00
Devang Patel
2936807564
Handle TAG_constant for integers.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110656 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 07:11:13 +00:00
Devang Patel
2739896cdd
Refactor.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09 21:39:24 +00:00
Owen Anderson
2f3ffb80fa
Add ConstantRange information to the debugging output.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110598 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09 20:50:46 +00:00
Owen Anderson
90c579de5a
Reapply r110396, with fixes to appease the Linux buildbot gods.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 18:33:48 +00:00
Dan Gohman
e26a7b5e21
Implement a proper getModRefInfo for va_arg.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 18:24:38 +00:00
Dan Gohman
b9db52dcbc
Be more conservative in the face of volatile.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110456 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 18:11:28 +00:00
Dan Gohman
9b8639c9bd
Fix a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 18:10:45 +00:00
Dan Gohman
6ce9d8b0ed
Move all the logic for function attributes and call attributes out of the
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AliasAnalysis base class and into BasicAliasAnalyais. This avoids confusion
about where such logic is happening when there are other AliasAnalysis
implementations present.
Move the logic for translating two-callsite getModRefInfo queries into
other AliasAnalysis queries out of BasicAliasAnalysis and into the
AliasAnalysis base class, as it is useful for other AliasAnalysis
implementations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110421 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 01:25:49 +00:00
Owen Anderson
e6a4a36096
Fix botched revert.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110416 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 00:36:20 +00:00
Owen Anderson
1f74590e9d
Revert r110396 to fix buildbots.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 00:23:35 +00:00
Dan Gohman
5eeb19d189
Fix 80-column violations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110401 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 23:48:14 +00:00
Owen Anderson
9ccaf53ada
Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static
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ID member as the sole unique type identifier. Clean up APIs related to this change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 23:42:04 +00:00
Dan Gohman
130073904f
Implement AccessesArguments checking in the two-callsite form
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of BasicAA::getModRefInfo. This allows BasicAA to say that two
memset calls to non-aliasing memory locations don't interfere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110393 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 23:34:50 +00:00
Dan Gohman
0c3f3358df
Yes, we can do better, but this is not the place for it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110391 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 23:23:32 +00:00
Owen Anderson
5be2e78fa1
Add the beginnings of infrastructure for range tracking.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 22:59:19 +00:00
Owen Anderson
db78d73d96
Split the tag and value members of LVILatticeVal in preparation for expanding the lattice to something that won't fit in two bits.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110383 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 22:10:46 +00:00
Dan Gohman
5fa417c790
Fix memdep's code for reasoning about dependences between two calls. A Ref
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response from getModRefInfo is not useful here. Instead, check for identical
calls only in the NoModRef case.
Reapply r110270, and strengthen it to compensate for the memdep changes.
When both calls are readonly, there is no dependence between them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110382 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 22:09:15 +00:00
Dan Gohman
34fa82f7e8
Revert r110270 for now. It appears to uncover a memdep bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 00:43:10 +00:00
Dan Gohman
907857d746
The trouble with testing for "ModRef" and "NoModRef" is that
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one is a suffix of the other, and FileCheck accepts superstrings.
Adjust the output to avoid this problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110280 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 23:37:55 +00:00
Dan Gohman
3dcc91ee8c
The two-callsite form of AliasAnalysis::getModRefInfo is documented
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to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.
Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 22:56:29 +00:00
Dan Gohman
ddd3a8899a
Fix a minor bug which resulted in intermediate calculations
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using wider types than are necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110241 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 19:52:50 +00:00
Torok Edwin
e89652ccad
Add a missing function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110195 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 11:42:45 +00:00
Dan Gohman
a41af344c2
Remove PointerAccessInfo, which nothing was using.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110167 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 23:08:10 +00:00
Dan Gohman
79fca6fea8
Thread const correctness through a bunch of AliasAnalysis interfaces and
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eliminate several const_casts.
Make CallSite implicitly convertible to ImmutableCallSite.
Rename the getModRefBehavior for intrinsic IDs to
getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite,
which happens to be implicitly convertible to bool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110155 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 21:48:53 +00:00
Dan Gohman
6fc24467e9
The singular of "indices" is "index".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110135 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 20:23:52 +00:00
Dan Gohman
17f647d332
Delete an unused function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 20:20:56 +00:00
Dan Gohman
14a498a486
Make AliasAnalysis::getModRefInfo conservative in the face of volatility.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110120 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 17:27:43 +00:00
Dan Gohman
84b8ad321b
Fix a typo Devang noticed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110115 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 16:48:31 +00:00
Michael J. Spencer
4473b37018
Fix CMake build
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110097 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 02:38:20 +00:00
Dan Gohman
ef1cfac9e5
Introduce a symbolic constant for ~0u for use with AliasAnalysis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110091 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 01:03:11 +00:00
Dan Gohman
847a84efd2
Add a convenient form of AliasAnalysis::alias for the case where the sizes
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are unknown.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110090 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03 00:56:30 +00:00