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C++: QLDoc for VirtualVariable in IR construction

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This commit is contained in:
Robert Marsh
2020-09-24 15:55:57 -07:00
parent 19316930cd
commit e9b1d817c7
2 changed files with 12 additions and 0 deletions
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6
cpp/ql/src/semmle/code/cpp/ir/implementation/aliased_ssa/internal/AliasedSSA.qll
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@@ -133,6 +133,12 @@ abstract class MemoryLocation extends TMemoryLocation {
predicate isAlwaysAllocatedOnStack() { none() }
}
/**
* Represents a set of `MemoryLocation`s that cannot overlap with
* `MemoryLocation`s outside of the set. The `VirtualVariable` will be
* represented by a `MemoryLocation` that totally overlaps all other
* `MemoryLocations` in the set.
*/
abstract class VirtualVariable extends MemoryLocation { }
abstract class AllocationMemoryLocation extends MemoryLocation {

6
cpp/ql/src/semmle/code/cpp/ir/implementation/unaliased_ssa/internal/SimpleSSA.qll
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@@ -59,6 +59,12 @@ class MemoryLocation extends TMemoryLocation {
final string getUniqueId() { result = var.getUniqueId() }
}
/**
* Represents a set of `MemoryLocation`s that cannot overlap with
* `MemoryLocation`s outside of the set. The `VirtualVariable` will be
* represented by a `MemoryLocation` that totally overlaps all other
* `MemoryLocations` in the set.
*/
class VirtualVariable extends MemoryLocation { }
/** A virtual variable that groups all escaped memory within a function. */