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adding looping construct to rtl?

From: Doug Evans <dje at sebabeach dot org>
To: cgen at sourceware dot org
Date: Fri, 19 Jun 2009 11:53:06 -0700
Subject: adding looping construct to rtl?

Hi.

Does anyone have any thoughts on adding a looping construct to the RTL?

This could be used, e.g., to simplify things like ARM's load/store-multiple instructions.

The first thing that came to mind is named sequences, akin to named lets. It's kinda nice, but maybe a bit too esoteric for the target audience. How to extend `sequence' is another matter, creating a new name may be the simpler way to go.

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