represents an implicit value-initialization of a subobject of a
particular type. This replaces the (ab)use of CXXZeroValueInitExpr
within initializer lists for the "holes" that occur due to the use of
C99 designated initializers.
The new test case is currently XFAIL'd, because CodeGen's
ConstExprEmitter (in lib/CodeGen/CGExprConstant.cpp) needs to be
taught to value-initialize when it sees ImplicitValueInitExprs.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63317 91177308-0d34-0410-b5e6-96231b3b80d8
eightbyte boundaries.
- Getting harder to test now that we handle cases gcc & llvm-gcc get
wrong ( { _Complex char; _Complex int; } is a good example). :)
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- This is my best initial guess at what the "spec" means, although it is not
particularly clear on a number of points. Will refine through testing.
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- Lift (int,float) -> (int,float) conversion into separate routines.
- Fix handling of, e.g., char -> _Complex int, which was producing a
_Complex char value instead.
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llvm[0]: Compiling SemaInit.cpp for Debug build
SemaInit.cpp:171: error: ‘InitListChecker’ has not been declared
SemaInit.cpp:171: error: ISO C++ forbids declaration of ‘InitListChecker’ with no type
SemaInit.cpp: In function ‘int InitListChecker(clang::Sema*, clang::InitListExpr*, clang::QualType&)’:
SemaInit.cpp:172: error: ‘hadError’ was not declared in this scope
SemaInit.cpp:173: error: ‘SemaRef’ was not declared in this scope
SemaInit.cpp:177: error: ‘FullyStructuredList’ was not declared in this scope
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evaluation (alternate part of real/imag init was being set to 3 not 0
because the wrong APFloat constructor was being called).
- Test cases coming once some more support is in.
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The previous interface was very confusing. This is much more explicit, which will be easier to understand/optimize/convert.
The plan is to eventually deprecate both of these functions. For now, I'm focused on performance.
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initializers.
- We now initialize unions properly when a member other than the
first is named by a designated initializer.
- We now provide proper semantic analysis and code generation for
GNU array-range designators *except* that side effects will occur
more than once. We warn about this.
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- Merged into single ComplexEvaluator, these share too much logic to
be worth splitting for float/int (IMHO). Will split on request.
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The approach I've taken in this patch is relatively straightforward,
although the code itself is non-trivial. Essentially, as we process
an initializer list we build up a fully-explicit representation of the
initializer list, where each of the subobject initializations occurs
in order. Designators serve to "fill in" subobject initializations in
a non-linear way. The fully-explicit representation makes initializer
lists (both with and without designators) easy to grok for codegen and
later semantic analyses. We keep the syntactic form of the initializer
list linked into the AST for those clients interested in exactly what
the user wrote.
Known limitations:
- Designating a member of a union that isn't the first member may
result in bogus initialization (we warn about this)
- GNU array-range designators are not supported (we warn about this)
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This removes ~10% of the calls to Sema::isTypeName(), which amount to a little less than a 1% reduction in usertime (for Cocoa.h).
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Fix a stupid mistake in UnwrapSimilarPointers that made any two member pointers compatible as long as the pointee was the same.
Make a few style corrections as suggested by Chris.
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Even though Sema::LookupDecl() is deprecated, it's still used all over the place. Simplifying the interface will make it easier to understand/optimize/convert.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63210 91177308-0d34-0410-b5e6-96231b3b80d8
Even though Sema::LookupDecl() is deprecated, it's still used all over the place. Simplifying the interface will make it easier to understand/optimize/convert.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63208 91177308-0d34-0410-b5e6-96231b3b80d8
Chris Lattner
Douglas Gregor
Daniel Dunbar
Steve Naroff
Fariborz Jahanian
Ted Kremenek
Sebastian Redl