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Before this patch, function multiversioning determines that two functions are different by comparing the arch type and isa flags that are set after the target string is processed. This leads to cases where the versions become identical when the command-line target options are altered. This patch modifies the function version determination to just compare the target string. 2012-12-27 Sriraman Tallam <tmsriram@google.com> * doc/tm.texi.in (TARGET_OPTION_SUPPORTS_FUNCTION_VERSIONS): Document new target hook. * doc/tm.texi: Regenerate. * c-family/c-common.c (handle_target_attribute): Retain target attribute for targets that support versioning. * target.def (supports_function_versions): New hook. * cp/class.c (add_method): Remove calls to DECL_FUNCTION_SPECIFIC_TARGET. * config/i386/i386.c (ix86_function_versions): Use target string to check for function versions instead of target flags. * (ix86_supports_function_versions): New function. * (is_function_default_version): Check target string. * TARGET_OPTION_SUPPORTS_FUNCTION_VERSIONS: New macro. 2012-12-27 Sriraman Tallam <tmsriram@google.com> * testsuite/g++.dg/mv1.C: Remove target options. * testsuite/g++.dg/mv2.C: Ditto. * testsuite/g++.dg/mv3.C: Ditto. * testsuite/g++.dg/mv4.C: Ditto. * testsuite/g++.dg/mv5.C: Ditto. From-SVN: r194730
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