This patch removes most of the trivial cases of weak vtables by pinning them to
a single object file. The memory leaks in this version have been fixed. Thanks
Alexey for pointing them out.
Differential Revision: http://llvm-reviews.chandlerc.com/D2068
Reviewed by Andy
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This change is incorrect. If you delete virtual destructor of both a base class
and a subclass, then the following code:
Base *foo = new Child();
delete foo;
will not cause the destructor for members of Child class. As a result, I observe
plently of memory leaks. Notable examples I investigated are:
ObjectBuffer and ObjectBufferStream, AttributeImpl and StringSAttributeImpl.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194997 91177308-0d34-0410-b5e6-96231b3b80d8
It works with clang, but GCC has different rules so we can't make all of those
hidden. This reverts commit r190534.
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This is for the benefit of those of us with inferior debuggers which
do not permit member function calls on value types.
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- Coallocate entires for AttributeSetImpls and Nodes after the class itself.
- Remove mutable iterators from immutable classes.
- Remove unused context field from AttributeImpl.
- Derive Enum/Align/String attribute implementations from AttributeImpl instead
of having a whole new inheritance tree for them.
- Derive AlignAttributeImpl from EnumAttributeImpl.
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The cause of the windows failures was fixed by r180791. Revert to the state
after Sabre's original revert.
Original message:
revert r179735, it has no testcases, and doesn't really make sense.
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The actual storage was already using unsigned, but the interface was using
uint64_t. This is wasteful on 32 bits and looks to be the root causes of
a miscompilation on Windows where a value was being sign extended to 64bits
to compare with the result of getSlotIndex.
Patch by Pasi Parviainen!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180791 91177308-0d34-0410-b5e6-96231b3b80d8
This un-reverts r179735 and reverts commit r180574.
This fixes assertion failures for me locally and should fix the failures
on Windows reported widely on llvm-dev. We should check if the bots
caught this and if so why not.
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Semantics of parameters named Index and Idx were inconsistent between
"include/llvm/IR/Attributes.h", "lib/IR/AttributeImpl.h" and
"lib/IR/Attributes.cpp": sometimes these were fixed 1-based indexes of IR
parameters (or AttributeSet::ReturnIndex for IR return values or
AttributeSet::FunctionIndex for IR functions), other times they were the
internal slot for storage in the underlying AttributeSetImpl. I renamed usage of
the former to "Index" and usage of the latter to "Slot" ("Slot" was already
being used consistently for the latter in a subset of cases)
Patch by Stephen Lin!
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It's sometimes beneficial to emit a testcase with the old style attribute
syntax. Allow someone to do this.
<rdar://problem/13563209>
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This was causing the folding set to fail to fold attributes, because it was
being calculated in one spot without an empty values string but here with an
empty values string.
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This emits the attribute groups that are used by the functions. (It currently
doesn't print out return type or parameter attributes within attribute groups.)
Note: The functions still retrieve their attributes from the "old" bitcode
format (using the deprecated 'Raw()' method). This means that string attributes
within an attribute group will not show up during a disassembly. This will be
addressed in a future commit.
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The stuff we're handing are all enums (Attribute::AttrKind), integers and
strings. Don't convert them to Constants, which is an unnecessary step here. The
rest of the changes are mostly mechanical.
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Use the AttributeSet's iterators in AttrBuilder::hasAttributes() when
determining of the intersection of the AttrBuilder and AttributeSet is non-null.
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The AttrBuilder is for building a collection of attributes. The Attribute object
holds only one attribute. So it's not really useful for the Attribute object to
have a creator which takes an AttrBuilder.
This has two fallouts:
1. The AttrBuilder no longer holds its internal attributes in a bit-mask form.
2. The attributes are now ordered alphabetically (hence why the tests have changed).
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Attributes that are strings are typically target-dependent attributes. They are
of this form in the IR:
"attr"
"attr" = "val"
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The Attribute::hasAttributes() is kind of meaningless since an Attribute can
have only one attribute. And we would rather people use the 'operator=='
instead of Attribute::hasAttribute().
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The AttributeSetNode contains all of the attributes. This removes one (hopefully
last) use of the Attribute class as a container of multiple attributes.
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The AttributeWithIndex class exposed the interior structure of the AttributeSet
class. That was gross. Remove it and all of the code that relied upon it.
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We want to remove AttributeWithIndex because it provides a non-encapsulated view
of the AttributeSetImpl object. Instead, use accessor methods and iterators.
Eventually, this code can be simplified because the Attribute object will hold
only one attribute instead of multiple attributes.
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The 'getSlot' function and its ilk allow introspection into the AttributeSet
class. However, that class should be opaque. Allow access through accessor
methods instead.
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This is a helper class for the AttributeSetImpl class. It holds a set of
attributes that apply to a single element: function, return type, or
parameter.
These are uniqued.
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This is more code to isolate the use of the Attribute class to that of just
holding one attribute instead of a collection of attributes.
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This c'tor takes the AttributeSet class as the parameter. It will eventually
grab the attributes from the specified index and create a new attribute builder
with those attributes.
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The Attribute class is eventually going to represent one attribute. So we need
this class to create the set of attributes. Add some iterator methods to the
builder to access its internal bits in a nice way.
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