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[aarch64] Use better dwarf2 encoding factors

From: Richard Henderson <rth at redhat dot com>
To: Marcus Shawcroft <marcus dot shawcroft at arm dot com>, Binutils <binutils at sourceware dot org>
Date: Wed, 06 Aug 2014 12:39:47 -1000
Subject: [aarch64] Use better dwarf2 encoding factors
Authentication-results: sourceware.org; auth=none

These constants were copied from the 32-bit ARM port.  But for AArch64, we only
have 32-bit instructions, and (even for ilp32) 64-bit frame related stores.

Using the proper factors results in smaller unwind info.

Ok?


r~

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