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r345839 | erichkeane | 2018-11-01 08:11:43 -0700 (Thu, 01 Nov 2018) | 6 lines
Multiversioning- Ensure all MV functions are emitted.
Multiverson function versions are always used (by the resolver), so ensure that
they are always emitted.
Change-Id: I5d2e0841fddf0d18918b3fb92ae76814add7ee96
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_70@348686 91177308-0d34-0410-b5e6-96231b3b80d8
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r339597 | erichkeane | 2018-08-13 20:33:20 +0200 (Mon, 13 Aug 2018) | 7 lines
Enforce instantiation of template multiversion functions
Multiversioned member functions inside of a template type were
not properly being emitted. The solution to this is to simply
ensure that their bodies are correctly evaluated/assigned during
template instantiation.
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_70@339663 91177308-0d34-0410-b5e6-96231b3b80d8
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As reported here: https://bugs.llvm.org/show_bug.cgi?id=35921
The resolver functions should be in their own
COMDAT regions. This patch sets that up.
Differential Revision: https://reviews.llvm.org/D42110
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@322592 91177308-0d34-0410-b5e6-96231b3b80d8
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GCC's attribute 'target', in addition to being an optimization hint,
also allows function multiversioning. We currently have the former
implemented, this is the latter's implementation.
This works by enabling functions with the same name/signature to coexist,
so that they can all be emitted. Multiversion state is stored in the
FunctionDecl itself, and SemaDecl manages the definitions.
Note that it ends up having to permit redefinition of functions so
that they can all be emitted. Additionally, all versions of the function
must be emitted, so this also manages that.
Note that this includes some additional rules that GCC does not, since
defining something as a MultiVersion function after a usage has been made illegal.
The only 'history rewriting' that happens is if a function is emitted before
it has been converted to a multiversion'ed function, at which point its name
needs to be changed.
Function templates and virtual functions are NOT yet supported (not supported
in GCC either).
Additionally, constructors/destructors are disallowed, but the former is
planned.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@322028 91177308-0d34-0410-b5e6-96231b3b80d8
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