================
@@ -1834,6 +1834,14 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions
&Opts, ArgList &Args,
Opts.setInlining(CodeGenOptions::NormalInlining);
}
+ // If we have specified -Og and have not explicitly set
-fno-extend-lifetimes,
+ // then default to -fextend-lifetimes.
+ if (Arg *A = Args.getLastArg(options::OPT_O_Group);
+ A && A->containsValue("g")) {
----------------
SLTozer wrote:
Is there an advantage to having it passed through the driver? I ask mainly
because I see `-fextend-lifetimes` as being a feature of `-Og` optimization,
and if you invoke `clang -cc1 -Og` directly then you'd expect/hope that the
optimization behaviour would be the same as `clang -Og` - I'm not too familiar
with expected Clang behaviour though, so if this is quite normal for
driver/frontend behaviour then I'm fine to switch it.
https://github.com/llvm/llvm-project/pull/118026
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