GCC modified for the FreeChainXenon project
cab32bacae
We can't profile indirect calls to IFUNC resolvers nor their callees as it requires TLS which hasn't been set up yet when the dynamic linker is resolving IFUNC symbols. Add an IFUNC resolver caller marker to cgraph_node and set it if the function is called by an IFUNC resolver. Disable indirect call profiling for IFUNC resolvers and their callees. Tested with profiledbootstrap on Fedora 39/x86-64. gcc/ChangeLog: PR tree-optimization/114115 * cgraph.h (symtab_node): Add check_ifunc_callee_symtab_nodes. (cgraph_node): Add called_by_ifunc_resolver. * cgraphunit.cc (symbol_table::compile): Call symtab_node::check_ifunc_callee_symtab_nodes. * symtab.cc (check_ifunc_resolver): New. (ifunc_ref_map): Likewise. (is_caller_ifunc_resolver): Likewise. (symtab_node::check_ifunc_callee_symtab_nodes): Likewise. * tree-profile.cc (gimple_gen_ic_func_profiler): Disable indirect call profiling for IFUNC resolvers and their callees. gcc/testsuite/ChangeLog: PR tree-optimization/114115 * gcc.dg/pr114115.c: New test. |
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