https://gcc.gnu.org/g:eff00046409a7289bfdc1861e68b532895f91c0e
commit r15-902-geff00046409a7289bfdc1861e68b532895f91c0e Author: Jason Merrill <ja...@redhat.com> Date: Wed Feb 14 17:18:17 2024 -0500 c++: pragma target and static init [PR109753] #pragma target and optimize should also apply to implicitly-generated functions like static initialization functions and defaulted special member functions. The handle_optimize_attribute change is necessary to avoid regressing g++.dg/opt/pr105306.C; maybe_clone_body creates a cgraph_node for the ~B alias before handle_optimize_attribute, and the alias never goes through finalize_function, so we need to adjust semantic_interposition somewhere else. PR c++/109753 gcc/c-family/ChangeLog: * c-attribs.cc (handle_optimize_attribute): Set cgraph_node::semantic_interposition. gcc/cp/ChangeLog: * decl.cc (start_preparsed_function): Call decl_attributes. gcc/testsuite/ChangeLog: * g++.dg/opt/always_inline1.C: New test. Diff: --- gcc/c-family/c-attribs.cc | 4 ++++ gcc/cp/decl.cc | 3 +++ gcc/testsuite/g++.dg/opt/always_inline1.C | 8 ++++++++ 3 files changed, 15 insertions(+) diff --git a/gcc/c-family/c-attribs.cc b/gcc/c-family/c-attribs.cc index 04e39b41bdf..605469dd7dd 100644 --- a/gcc/c-family/c-attribs.cc +++ b/gcc/c-family/c-attribs.cc @@ -5971,6 +5971,10 @@ handle_optimize_attribute (tree *node, tree name, tree args, if (prev_target_node != target_node) DECL_FUNCTION_SPECIFIC_TARGET (*node) = target_node; + /* Also update the cgraph_node, if it's already built. */ + if (cgraph_node *cn = cgraph_node::get (*node)) + cn->semantic_interposition = flag_semantic_interposition; + /* Restore current options. */ cl_optimization_restore (&global_options, &global_options_set, &cur_opts); diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc index a992d54dc8f..d481e1ec074 100644 --- a/gcc/cp/decl.cc +++ b/gcc/cp/decl.cc @@ -17832,6 +17832,9 @@ start_preparsed_function (tree decl1, tree attrs, int flags) doing_friend = true; } + /* Adjust for #pragma target/optimize. */ + decl_attributes (&decl1, NULL_TREE, 0); + if (DECL_DECLARED_INLINE_P (decl1) && lookup_attribute ("noinline", attrs)) warning_at (DECL_SOURCE_LOCATION (decl1), 0, diff --git a/gcc/testsuite/g++.dg/opt/always_inline1.C b/gcc/testsuite/g++.dg/opt/always_inline1.C new file mode 100644 index 00000000000..a042a1cf0c6 --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/always_inline1.C @@ -0,0 +1,8 @@ +// PR c++/109753 +// { dg-do compile { target x86_64-*-* } } + +#pragma GCC target("avx2") +struct aa { + __attribute__((__always_inline__)) aa() {} +}; +aa _M_impl;