[clang] [flang] [flang] add -floop-interchange and enable it with opt levels (PR #140182)

[Kelvin Li via cfe-commits]

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@@ -3149,3 +3149,16 @@ void tools::handleVectorizeSLPArgs(const ArgList &Args,
                    options::OPT_fno_slp_vectorize, EnableSLPVec))
     CmdArgs.push_back("-vectorize-slp");
 }
+
+void tools::handleInterchangeLoopsArgs(const ArgList &Args,
+                                       ArgStringList &CmdArgs) {
+  // FIXME: instead of relying on shouldEnableVectorizerAtOLevel, we may want to
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kkwli wrote:

Nit: instead → Instead

https://github.com/llvm/llvm-project/pull/140182