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* Fix for PR1801Tanya Lattner2007-11-161-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44193 91177308-0d34-0410-b5e6-96231b3b80d8
* Reverted r44163 per requestAnton Korobeynikov2007-11-151-52/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44177 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix handling of overflow in loop calculation by adding new UDiv SCEV. This SCEVNick Lewycky2007-11-151-4/+51
| | | | | | | | is disabled in the sense that it will refuse to create one from a UDiv instruction, until the code is better tested. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44163 91177308-0d34-0410-b5e6-96231b3b80d8
* More templatization.Owen Anderson2007-11-151-230/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44158 91177308-0d34-0410-b5e6-96231b3b80d8
* Start the process of making MachineLoopInfo possible by templating Loop.Owen Anderson2007-11-141-396/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44097 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1774 and BasicAA/2007-11-05-SizeCrash.llChris Lattner2007-11-061-7/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43756 91177308-0d34-0410-b5e6-96231b3b80d8
* Executive summary: getTypeSize -> getTypeStoreSize / getABITypeSize.Duncan Sands2007-11-017-25/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The meaning of getTypeSize was not clear - clarifying it is important now that we have x86 long double and arbitrary precision integers. The issue with long double is that it requires 80 bits, and this is not a multiple of its alignment. This gives a primitive type for which getTypeSize differed from getABITypeSize. For arbitrary precision integers it is even worse: there is the minimum number of bits needed to hold the type (eg: 36 for an i36), the maximum number of bits that will be overwriten when storing the type (40 bits for i36) and the ABI size (i.e. the storage size rounded up to a multiple of the alignment; 64 bits for i36). This patch removes getTypeSize (not really - it is still there but deprecated to allow for a gradual transition). Instead there is: (1) getTypeSizeInBits - a number of bits that suffices to hold all values of the type. For a primitive type, this is the minimum number of bits. For an i36 this is 36 bits. For x86 long double it is 80. This corresponds to gcc's TYPE_PRECISION. (2) getTypeStoreSizeInBits - the maximum number of bits that is written when storing the type (or read when reading it). For an i36 this is 40 bits, for an x86 long double it is 80 bits. This is the size alias analysis is interested in (getTypeStoreSize returns the number of bytes). There doesn't seem to be anything corresponding to this in gcc. (3) getABITypeSizeInBits - this is getTypeStoreSizeInBits rounded up to a multiple of the alignment. For an i36 this is 64, for an x86 long double this is 96 or 128 depending on the OS. This is the spacing between consecutive elements when you form an array out of this type (getABITypeSize returns the number of bytes). This is TYPE_SIZE in gcc. Since successive elements in a SequentialType (arrays, pointers and vectors) need to be aligned, the spacing between them will be given by getABITypeSize. This means that the size of an array is the length times the getABITypeSize. It also means that GEP computations need to use getABITypeSize when computing offsets. Furthermore, if an alloca allocates several elements at once then these too need to be aligned, so the size of the alloca has to be the number of elements multiplied by getABITypeSize. Logically speaking this doesn't have to be the case when allocating just one element, but it is simpler to also use getABITypeSize in this case. So alloca's and mallocs should use getABITypeSize. Finally, since gcc's only notion of size is that given by getABITypeSize, if you want to output assembler etc the same as gcc then getABITypeSize is the size you want. Since a store will overwrite no more than getTypeStoreSize bytes, and a read will read no more than that many bytes, this is the notion of size appropriate for alias analysis calculations. In this patch I have corrected all type size uses except some of those in ScalarReplAggregates, lib/Codegen, lib/Target (the hard cases). I will get around to auditing these too at some point, but I could do with some help. Finally, I made one change which I think wise but others might consider pointless and suboptimal: in an unpacked struct the amount of space allocated for a field is now given by the ABI size rather than getTypeStoreSize. I did this because every other place that reserves memory for a type (eg: alloca) now uses getABITypeSize, and I didn't want to make an exception for unpacked structs, i.e. I did it to make things more uniform. This only effects structs containing long doubles and arbitrary precision integers. If someone wants to pack these types more tightly they can always use a packed struct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43620 91177308-0d34-0410-b5e6-96231b3b80d8
* Add explicit keywords.Dan Gohman2007-10-291-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43464 91177308-0d34-0410-b5e6-96231b3b80d8
* Make a comment better.Owen Anderson2007-10-261-1/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43379 91177308-0d34-0410-b5e6-96231b3b80d8
* Silenced a VC++ warning.Hartmut Kaiser2007-10-251-1/+1
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* Fix for PR1741.Owen Anderson2007-10-251-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43326 91177308-0d34-0410-b5e6-96231b3b80d8
* Make DomTree and PostDomTree thin wrappers around DomTreeBase, rather than ↵Owen Anderson2007-10-231-19/+1
| | | | | | inheriting from it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43259 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the SCEV object factors from being static members of the individualDan Gohman2007-10-222-177/+193
| | | | | | | | SCEV subclasses to being non-static member functions of the ScalarEvolution class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43224 91177308-0d34-0410-b5e6-96231b3b80d8
* Template DominatorTreeBase by node type. This is the next major step towardsOwen Anderson2007-10-161-1/+1
| | | | | | | having dominator information on MBB's. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43036 91177308-0d34-0410-b5e6-96231b3b80d8
* Bindings for the verifier.Gordon Henriksen2007-10-061-0/+38
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42707 91177308-0d34-0410-b5e6-96231b3b80d8
* Completely merge the implementation details of DomTree and PostDomTree.Owen Anderson2007-10-032-101/+2
| | | | | | | Also, add a FIXME for a bug in PostDomTree calculation I noticed while writing this, git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42593 91177308-0d34-0410-b5e6-96231b3b80d8
* Use empty() member functions when that's what's being tested for insteadDan Gohman2007-10-032-3/+3
| | | | | | | of comparing begin() and end(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42585 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor some code from the DomTree and PostDomTree calculate methods up into Owen Anderson2007-10-032-18/+23
| | | | | | | each one's runOnFunction method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42563 91177308-0d34-0410-b5e6-96231b3b80d8
* Rewrite sqrt and powi to use anyfloat. By popular demand.Dale Johannesen2007-10-021-12/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42537 91177308-0d34-0410-b5e6-96231b3b80d8
* Template-ize more of the DomTree internal implementation details. Only the ↵Owen Anderson2007-09-301-3/+4
| | | | | | calculate() methods for DomTree and PostDomTree remain to be merged/template-ized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42476 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new DenseSet abstraction.Chris Lattner2007-09-301-4/+4
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* Switch to densemap rather than std::setDaniel Berlin2007-09-291-3/+26
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* Remove unneeded #include.Owen Anderson2007-09-281-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42428 91177308-0d34-0410-b5e6-96231b3b80d8
* Have PostDomTree use the newly templated DFSPass.Owen Anderson2007-09-282-46/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42427 91177308-0d34-0410-b5e6-96231b3b80d8
* Add sqrt and powi intrinsics for long double.Dale Johannesen2007-09-281-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42423 91177308-0d34-0410-b5e6-96231b3b80d8
* Ignore redundant constraintsDaniel Berlin2007-09-271-2/+20
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* Build the correct range for loops with unusual bounds. Fix from Jay Foad.Nick Lewycky2007-09-271-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42394 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a newline to the end of this file.Duncan Sands2007-09-251-1/+1
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* Don't execute dump unless NDEBUG isn't defined.Bill Wendling2007-09-241-0/+2
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* Comment fixupsDaniel Berlin2007-09-241-12/+11
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* Implement offline variable substitution in order to reduce memoryDaniel Berlin2007-09-241-91/+926
| | | | | | | | | | and time usage. Fixup operator == to make this work, and add a resize method to DenseMap so we can resize our hashtable once we know how big it should be. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42269 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge significant portions of the DomTree and PostDomTree implementations.Owen Anderson2007-09-241-36/+3
| | | | | | | The two remaining unmerged parts are DFSPass, and the Calculate(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42255 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor the calculation details for PostDomTree out of PostDominators.cpp andOwen Anderson2007-09-232-142/+149
| | | | | | | | | into a separate header file. Next step: merging PostDominatorCalculation.h with DominatorCalculation.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42251 91177308-0d34-0410-b5e6-96231b3b80d8
* Add partial caching of non-local memory dependence queries. This provides a ↵Owen Anderson2007-09-211-2/+33
| | | | | | | | | modest speedup for GVN. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42185 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a flag to mark a dirty cache entry. This is not yet used, but will ↵Owen Anderson2007-09-191-0/+1
| | | | | | | | | eventually help non-local memdep caching. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42137 91177308-0d34-0410-b5e6-96231b3b80d8
* ooops...Devang Patel2007-09-181-1/+1
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* Fix bug in andersen's related to test_and_set.Daniel Berlin2007-09-161-4/+3
| | | | | | | | Add operator == and != to SparseBitVector. Simplify code for test_and_set git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42018 91177308-0d34-0410-b5e6-96231b3b80d8
* Rewrite of andersen's to be about 100x faster, cleaner, and begin to support ↵Daniel Berlin2007-09-161-324/+687
| | | | | | field sensitivity git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42016 91177308-0d34-0410-b5e6-96231b3b80d8
* Change "tmp." to "tmp" for temporaries created by ScalarEvolutionExpanderDan Gohman2007-09-141-1/+1
| | | | | | | for consistency with many other transforms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41957 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo in memdep, which was causing PR1648.Owen Anderson2007-09-111-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41833 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove an un-needed dependence query. This improves compile time marginally ↵Owen Anderson2007-09-091-9/+10
| | | | | | on 401.bzip2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41792 91177308-0d34-0410-b5e6-96231b3b80d8
* Add lengthof and endof templates that hide a lot of sizeof computations.Owen Anderson2007-09-071-5/+4
| | | | | | | Patch by Sterling Stein! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41758 91177308-0d34-0410-b5e6-96231b3b80d8
* Next round of APFloat changes.Dale Johannesen2007-09-062-15/+43
| | | | | | | | | | | | | | | Use APFloat in UpgradeParser and AsmParser. Change all references to ConstantFP to use the APFloat interface rather than double. Remove the ConstantFP double interfaces. Use APFloat functions for constant folding arithmetic and comparisons. (There are still way too many places APFloat is just a wrapper around host float/double, but we're getting there.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41747 91177308-0d34-0410-b5e6-96231b3b80d8
* Missing break. Patch by Wojciech Matyjewicz.Evan Cheng2007-09-051-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41727 91177308-0d34-0410-b5e6-96231b3b80d8
* Use SmallVector.Devang Patel2007-08-211-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41230 91177308-0d34-0410-b5e6-96231b3b80d8
* No need to hardcode SmallVector size.Devang Patel2007-08-211-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41228 91177308-0d34-0410-b5e6-96231b3b80d8
* Use SmallVector instead of std::vector.Devang Patel2007-08-212-5/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41207 91177308-0d34-0410-b5e6-96231b3b80d8
* - Use correct header for SCEV inside LoopPass.cppAnton Korobeynikov2007-08-202-1/+13
| | | | | | | - Move SCEVExpander::expand() out-of-line workarounding possible toolchain bug git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41197 91177308-0d34-0410-b5e6-96231b3b80d8
* Cache non-local memory dependence analysis. This is a significant compileOwen Anderson2007-08-161-2/+22
| | | | | | | time performance win in most cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41126 91177308-0d34-0410-b5e6-96231b3b80d8
* constant fold ptrtoint(inttoptr) with target data when available. This allowsChris Lattner2007-08-111-2/+17
| | | | | | | | | | | | us to fold the entry block of PR1602 to false instead of: br i1 icmp eq (i32 and (i32 ptrtoint (void (%struct.S*)* inttoptr (i64 1 to void (%struct.S*)*) to i32), i32 1), i32 0), label %cond_next, label %cond_true git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41023 91177308-0d34-0410-b5e6-96231b3b80d8
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