[clang] [Clang] Add "extend lifetime" flags and release note (PR #110000)

[David Blaikie via cfe-commits]

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@@ -2217,6 +2217,11 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
                       Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
                       Opts.SanitizeTrap);
 
+  Opts.ExtendThisPtr =
+      Opts.OptimizationLevel > 0 && Args.hasArg(OPT_fextend_this_ptr);
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dwblaikie wrote:

Is it worth maybe making this inconditional, even at -O0, in case someone's put an optimize attribute on a function, etc, and wants to override it?

https://github.com/llvm/llvm-project/pull/110000