[llvm-bugs] [Bug 34669] New: Provide -f-no-alias, opposite of -fno-strict-alias

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Sep 19 06:37:02 PDT 2017


            Bug ID: 34669
           Summary: Provide -f-no-alias, opposite of -fno-strict-alias
           Product: clang
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: ag at arvid.io
                CC: llvm-bugs at lists.llvm.org

The '-fno-strict-alias' flag disables all alias semantics, which is useful for
some applications where these would be violated. The opposite of this would be
a useful addition, which would basically provide FORTRAN like aliasing
semantics for C / C++, by adding an implicit 'restrict' to every pointer.

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