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path: root/lib/Sema/SemaTemplateDeduction.cpp
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2009-06-25Improved semantic analysis and AST respresentation for functionDouglas Gregor
templates. For example, this now type-checks (but does not instantiate the body of deref<int>): template<typename T> T& deref(T* t) { return *t; } void test(int *ip) { int &ir = deref(ip); } Specific changes/additions: * Template argument deduction from a call to a function template. * Instantiation of a function template specializations (just the declarations) from the template arguments deduced from a call. * FunctionTemplateDecls are stored directly in declaration contexts and found via name lookup (all forms), rather than finding the FunctionDecl and then realizing it is a template. This is responsible for most of the churn, since some of the core declaration matching and lookup code assumes that all functions are FunctionDecls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23Check in a new template argument list builder that should work better for ↵Anders Carlsson
variadic templates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73937 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Some cleanups suggested by ChrisDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73713 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17First step toward fixing <rdar://problem/6613046> refactor clang objc type ↵Steve Naroff
representation. Add a type (ObjCObjectPointerType) and remove a type (ObjCQualifiedIdType). This large/tedious patch is just a first step. Next step is to remove ObjCQualifiedInterfaceType. After that, I will remove the magic TypedefType for 'id' (installed by Sema). This work will enable various simplifications throughout clang (when dealing with ObjC types). No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73649 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17Support dependent extended vector types and template instantiationDouglas Gregor
thereof. Patch by Anders Johnsen! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73641 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16Since integral template arguments can't have dependent types we don't need ↵Anders Carlsson
an extra pass to set the right APSInt bit width/signedness. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73580 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16Make DeduceNonTypeTemplateArgument take an APSInt instead of an APInt.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73574 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-15Add a new 'Pack' argument kind to TemplateArgument. This is not yet used.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73391 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-14Introduce a SFINAE "trap" that keeps track of the number of errorsDouglas Gregor
that were suppressed due to SFINAE. By checking whether any errors occur at the end of template argument deduction, we avoid the possibility of suppressing an error (due to SFINAE) and then recovering so well that template argument deduction never detects that there was a problem. Thanks to Eli for the push in this direction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-13Remove a bunch of unnecessary template argument deduction code that wasDouglas Gregor
obviously written by someone who didn't read C++ [temp.class.spec]. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73276 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-13When some template parameters of a class template partialDouglas Gregor
specialization cannot be deduced, produce a warning noting that the affected class template partial specialization will never be used. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12Address comments from Doug - Add a Sema::SemaRef.BuildBlockPointerType and ↵Anders Carlsson
use it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73264 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12It looks like we've finished off matching of class template partial ↵Douglas Gregor
specializations; add comments and update the C++ status page git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73263 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12Improve template argument deduction to keep track of why templateDouglas Gregor
argument deduction failed. For example, given template<typename T> struct is_same<T, T> { ... }; template argument deduction will fail for is_same<int, float>, and now reports enough information Right now, we don't do anything with this extra information, but it can be used for informative diagnostics that say, e.g., "template argument deduction failed because T was deduced to 'int' in one context and 'float' in another". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73237 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12Deducation and instantiation of block types.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73232 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11Once we have deduced the template arguments of a class templateDouglas Gregor
partial specialization, substitute those template arguments back into the template arguments of the class template partial specialization to see if the results still match the original template arguments. This code is more general than it needs to be, since we don't yet diagnose C++ [temp.class.spec]p9. However, it's likely to be needed for function templates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73196 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-10Template argument deduction for member pointers.Douglas Gregor
Also, introduced some of the framework for performing instantiation as part of template argument deduction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73175 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09Implement template argument deduction for class templateDouglas Gregor
specialization types. As the example shows, we can now compute the length of a type-list using a template metaprogram and class template partial specialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73136 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08Address comments from Doug.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73077 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08Document the template argument deduction patterns that Anders' patch supportsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73071 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08Template argument deduction for function types.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73070 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-05Make TemplateArgumentListBuilder take an ASTContext (because we're probably ↵Anders Carlsson
going to need it later). Move push_back to the .cpp file. If the passed in template argument is a type, assert that it's canonical. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72918 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-05Make the TemplateArgumentList take a TemplateArgumentListBuilder.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72917 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-05Several improvements to template argument deduction:Douglas Gregor
- Once we have deduced template arguments for a class template partial specialization, we use exactly those template arguments for instantiating the definition of the class template partial specialization. - Added template argument deduction for non-type template parameters. - Added template argument deduction for dependently-sized array types. With these changes, we can now implement, e.g., the remove_reference type trait. Also, Daniel's Ackermann template metaprogram now compiles properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72909 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-04Template argument deduction for incomplete and constant array types. Doug, ↵Anders Carlsson
please review. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72844 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-04Template argument deduction for referencesDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72822 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-04When performing template argument deduction, ensure that multipleDouglas Gregor
deductions of the same template parameter are equivalent. This allows us to implement the is_same type trait (!). Also, move template argument deduction into its own file and update a few build systems with this change (grrrr). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72819 91177308-0d34-0410-b5e6-96231b3b80d8
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