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path: root/lib/VMCore/Value.cpp
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2009-11-01remove a bunch of locking from LLVMContextImpl. Since only one threadChris Lattner
can be banging on a context at a time, this isn't needed. Owen, please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85728 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17Remove unnecessary include.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Copy metadata when value is RAUW'd. It is debatable whether this is the ↵Devang Patel
right approach for custom metadata data in general. However, right now the only custom data user, "dbg", expects this behavior while FE is constructing llvm IR with debug info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83977 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-12Fix http://llvm.org/PR5160, to let CallbackVHs modify other ValueHandles on theJeffrey Yasskin
same Value without breaking things. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83861 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22Fix commento.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82544 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22Add a TrackingVH value handle.Daniel Dunbar
This is designed for tracking a value even when it might move (like WeakVH), but it is an error to delete the referenced value (unlike WeakVH0. TrackingVH is templated like AssertingVH on the tracked Value subclass, it is an error to RAUW a tracked value to an incompatible type. For implementation reasons the latter error is only diagnosed on accesses to a mis-RAUWed TrackingVH, because we don't want a virtual interface in a templated class. The former error is also only diagnosed on access, so that clients are allowed to delete a tracked value, as long as they don't use it. This makes it easier for the client to reason about destruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82506 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20Strip trailing whitespace.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82359 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-17Initialize HasMetadata to zero.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82145 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16Add llvm::Metadata to manage metadata used in a context. Devang Patel
This interface will be used to attach metadata with an instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82060 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27Teach getUnderlyingObject and skipPointerCasts about GlobalAliases.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80265 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19Add a fast path for setName("") on an unnamed value.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79492 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19Make a SmallVector size more reasonable.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79403 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-18Privatize the ValueHandle global map. Because this is used so heavily ↵Owen Anderson
throughout the code base, locking all accesses to it is not practical performance-wise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79355 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Push LLVMContexts through the IntegerType APIs.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78948 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Fix a typo in an assertion string.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78671 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04revert r78048, it isn't worth using assertingvh here.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78119 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04switch ValueMap to using AssertingVH. This is an old patch I had layingChris Lattner
around in a tree I forgot about. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78048 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Keep track of named mdnodes in a Module using an ilist.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77476 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Rename MDNode.h header. It defines MDnode and other metadata classes.Devang Patel
New name is Metadata.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77370 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26Make sure getName().data() is always null terminated.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77149 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26Rewrite getName{Start,End,Len} in terms of getName(), instead of vice-versa.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77105 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26Simplify.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77102 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26Remove Value::setName(const char*, unsigned).Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77100 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26Remove Value::setName(const char*).Daniel Dunbar
- Split into a separate patch because there is a slight functionality change, it is no longer valid to call setName(0), which was equivalent to setName(""). I'm hoping no one depends on this... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77099 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25Remove Value::{isName, getNameRef}.Daniel Dunbar
Also, change MDString to use a StringRef. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25Initial update to VMCore to use Twines for string arguments.Daniel Dunbar
- The only meat here is in Value.{h,cpp} the rest is essential 'const std::string &' -> 'const Twine &'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77048 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Move more to raw_ostream.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76964 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23Add llvm::Value::getNameRef, for help in API migration.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76893 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Introduce MetadataBase, a base class for MDString and MDNode.Devang Patel
Derive MDString directly from MetadataBase. Introduce new bitcode block to hold metadata. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Get rid of the Pass+Context magic.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-20Revert the addition of hasNoPointerOverflow to GEPOperator.Dan Gohman
Getelementptrs that are defined to wrap are virtually useless to optimization, and getelementptrs that are undefined on any kind of overflow are too restrictive -- it's difficult to ensure that all intermediate addresses are within bounds. I'm going to take a different approach. Remove a few optimizations that depended on this flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76437 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-18Fix this accidentally inverted condition.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76278 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Convert more code to use Operator instead of explicitly handling bothDan Gohman
ConstantExpr and Instruction. This involves duplicating some code between GetElementPtrInst and GEPOperator, but it's not a lot. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76265 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Make BasicAliasAnalysis and Value::getUnderlyingObject useDan Gohman
GEPOperator's hasNoPointer0verflow(), and make a few places in instcombine that create GEPs that may overflow clear the NoOverflow value. Among other things, this partially addresses PR2831. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76252 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Add a SubclassOptionalData field to Value. See the doxygen comment forDan Gohman
details. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76189 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.Torok Edwin
This adds location info for all llvm_unreachable calls (which is a macro now) in !NDEBUG builds. In NDEBUG builds location info and the message is off (it only prints "UREACHABLE executed"). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75640 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-08Fix the AssertingVH unittests.Jeffrey Yasskin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75060 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-08Implement changes from Chris's feedback.Torok Edwin
Finish converting lib/Target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75043 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-08Start converting to new error handling API.Torok Edwin
cerr+abort -> llvm_report_error assert(0)+abort -> LLVM_UNREACHABLE (assert(0)+llvm_unreachable-> abort() included) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75018 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-07Have scoped mutexes take referenes instead of pointers.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74931 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Simplify by using no-op-when-not-multithreaded locks.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73719 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Move Threading.[h|cpp] from Support to System.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73707 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17Protect the ValueHandle table.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73620 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-04Restore minor deletion.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70892 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-02Apply Jeffrey Yasskin's CallbackVH patch, with minor tweaks from meDan Gohman
to make the copy constructor and destructor protected, and corresponding adjustments to the unittests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70644 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-15Limit the number of times we're willing to chase pointers. Removes an O(n^2)Nick Lewycky
problem from instcombine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69151 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31Add two new classes: WeakVH and AssertingVH. These are both "ValueHandles", Chris Lattner
which are effectively smart pointers to Value*'s. They are both very light weight and simple, and react to values being destroyed or being RAUW'd. WeakVN does a best effort to follow a value around, including through RAUW operations and will get nulled out of the value is destroyed. This is useful for the eventual "metadata that references a value" work, because it is a reference to a value that does not show up on its use_* list. AssertingVH is a pointer that compiles down to a dumb raw pointer when assertions are disabled. When enabled, it emits an assertion if the pointed-to value is destroyed while it is still being referenced. This is very useful for Maps and other things, and should have caught the recent bugs in CallGraph and Reassociate, for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68149 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-12Rearrange operands of the BranchInst, to be able toGabor Greif
access each with a fixed negative index from op_end(). This has two important implications: - getUser() will work faster, because there are less iterations for the waymarking algorithm to perform. This is important when running various analyses that want to determine callers of basic blocks. - getSuccessor() now runs faster, because the indirection via OperandList is not necessary: Uses corresponding to the successors are at fixed offset to "this". The price we pay is the slightly more complicated logic in the operator User::delete, as it has to pick up the information whether it has to free the memory of an original unconditional BranchInst or a BranchInst that was originally conditional, but has been shortened to unconditional. I was not able to come up with a nicer solution to this problem. (And rest assured, I tried *a lot*). Similar reorderings will follow for InvokeInst and CallInst. After that some optimizations to pred_iterator and CallSite will fall out naturally. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66815 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-29Make stripPointerCasts and getUnderlyingObjectDuncan Sands
non-recursive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61479 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-13These messages should always be emitted when NDEBUG is unset, not whenChris Lattner
NDEBUG is unset and -debug is passed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60986 91177308-0d34-0410-b5e6-96231b3b80d8
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