[flang-commits] [clang] [flang] [Clang][Flang] Enable loop interchange by default at -O3 (PR #216920)

[Ryotaro Kasuga via flang-commits]

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@@ -1945,8 +1945,10 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
   Opts.UnrollLoops =
       Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
                    (Opts.OptimizationLevel > 1));
+  // Loop interchange is only enabled by default at -O3.
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kasuga-fj wrote:

nit: I think such a trivial comment is useless.

https://github.com/llvm/llvm-project/pull/216920