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It looks like there is no such options.
I want the internal compilation data from IR, such as -fdump-tree-all and -fdump-rtl-all options, maybe help. Thanks!
But why?
I think this is probably something you're going to have to discuss direct with Keil technical support.
The stuff you're talking about for GCC is to do with its internal workings; remember that GCC is open-source, but Keil is not - so, if they will discuss it at all, it might have to be under NDA...