MaskRay created this revision.
MaskRay added reviewers: hfinkel, tstellar, Romain-Geissler-1A,
serge-sans-paille.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
Fedora wants to build projects with -fno-semantic-interposition (e.g.
https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup),
which is supported by GCC>=5.
Clang's current behavior is similar to -fno-semantic-interposition and
the end goal is to make it more so
(https://lists.llvm.org/pipermail/llvm-dev/2016-November/107625.html).
Ignore this option.
We should let users know -fsemantic-interposition is not currently
supported, so it should remain a hard error.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D72724
Files:
clang/include/clang/Driver/Options.td
clang/test/Driver/clang_f_opts.c
Index: clang/test/Driver/clang_f_opts.c
===================================================================
--- clang/test/Driver/clang_f_opts.c
+++ clang/test/Driver/clang_f_opts.c
@@ -251,6 +251,7 @@
// RUN: -fexec-charset=UTF-8 \
// RUN: -fivopts -fno-ivopts \
// RUN: -fnon-call-exceptions -fno-non-call-exceptions \
+// RUN: -fno-semantic-interposition \
// RUN: -fpermissive -fno-permissive \
// RUN: -fdefer-pop -fno-defer-pop \
// RUN: -fprefetch-loop-arrays -fno-prefetch-loop-arrays \
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -3258,6 +3258,7 @@
defm ipa_cp : BooleanFFlag<"ipa-cp">,
Group<clang_ignored_gcc_optimization_f_Group>;
defm ivopts : BooleanFFlag<"ivopts">,
Group<clang_ignored_gcc_optimization_f_Group>;
+defm no_semantic_interposition : BooleanFFlag<"no-semantic-interposition">,
Group<clang_ignored_f_Group>;
defm non_call_exceptions : BooleanFFlag<"non-call-exceptions">,
Group<clang_ignored_f_Group>;
defm peel_loops : BooleanFFlag<"peel-loops">,
Group<clang_ignored_gcc_optimization_f_Group>;
defm permissive : BooleanFFlag<"permissive">, Group<clang_ignored_f_Group>;
Index: clang/test/Driver/clang_f_opts.c
===================================================================
--- clang/test/Driver/clang_f_opts.c
+++ clang/test/Driver/clang_f_opts.c
@@ -251,6 +251,7 @@
// RUN: -fexec-charset=UTF-8 \
// RUN: -fivopts -fno-ivopts \
// RUN: -fnon-call-exceptions -fno-non-call-exceptions \
+// RUN: -fno-semantic-interposition \
// RUN: -fpermissive -fno-permissive \
// RUN: -fdefer-pop -fno-defer-pop \
// RUN: -fprefetch-loop-arrays -fno-prefetch-loop-arrays \
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -3258,6 +3258,7 @@
defm ipa_cp : BooleanFFlag<"ipa-cp">,
Group<clang_ignored_gcc_optimization_f_Group>;
defm ivopts : BooleanFFlag<"ivopts">, Group<clang_ignored_gcc_optimization_f_Group>;
+defm no_semantic_interposition : BooleanFFlag<"no-semantic-interposition">, Group<clang_ignored_f_Group>;
defm non_call_exceptions : BooleanFFlag<"non-call-exceptions">, Group<clang_ignored_f_Group>;
defm peel_loops : BooleanFFlag<"peel-loops">, Group<clang_ignored_gcc_optimization_f_Group>;
defm permissive : BooleanFFlag<"permissive">, Group<clang_ignored_f_Group>;
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