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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49257 91177308-0d34-0410-b5e6-96231b3b80d8
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expression liveness information.
The rationale is that a block-level expression cannot be live in a parent block unless it is live in all of the successor blocks.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48618 91177308-0d34-0410-b5e6-96231b3b80d8
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to be run on other declarations of blocks of code (e.g., Objective-C methods.)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48339 91177308-0d34-0410-b5e6-96231b3b80d8
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is because GNU-style Statement-expressions cause the last statement in the
statement-expression to act like an expression.
We now have two notions: block-level statements and block-level expressions.
The former are all Stmt* that appear in the list of statements in CFGBlocks. The
latter is the subset of the former; these block-level statements are used as
subexpressions somewhere in the AST. CFG::isBlockExpr() returns true for the
latter, not the former (previously isBlockExpr() always returned true for
non-Expr Stmt*).
Modified the LiveVariables analysis to also track liveness state for block-level
expressions (using the updated definition of block-level expressions).
Modified the dataflow solver so that when it records values for block-level
statements, it records the dataflow value *before* the transfer function for a
Stmt* is evaluated (not after). This is more in sync in what clients will want.
Modified CFGStmtVisitor to record the current block-level statement.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46143 91177308-0d34-0410-b5e6-96231b3b80d8
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discussion of this change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45410 91177308-0d34-0410-b5e6-96231b3b80d8
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Created include/clang/Analysis/Analyses directory.
- Moved LiveVariables.h and UninitializedValues.h into this dir.
Moved ExprDeclBitVector.h into Analysis/Support.
Updated all clients who use these headers to reflect the new paths.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45292 91177308-0d34-0410-b5e6-96231b3b80d8
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not needed, and it was never extensively tested. If we need an intrusive
reference-counting smart pointer, we can always import intrusive_ptr from
boost.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44571 91177308-0d34-0410-b5e6-96231b3b80d8
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not declared "static inline."
Removed member templates for operator= and copy constructor. They simply
didn't work as expected.
Fixed reference counting bug when a smart pointer is assigned the
value of another smart pointer that refers to the same address.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42562 91177308-0d34-0410-b5e6-96231b3b80d8
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counted objects that maintain their own internal reference count.
This smart pointer implementation is compatible with LLVM-style
down-casting (see in llvm: include/llvm/Support/Casting.h).
Implemented "RefCounted", a base class that objects that wish to be
managed using IntrusiveSPtrs can subclass.
Reference counted objects are being targeted for use in path-sensitive
dataflow analyses where managing many live objects becomes difficult.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42260 91177308-0d34-0410-b5e6-96231b3b80d8
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