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r243058 - /branches/ARM/sve-branch/gcc/tree-ssa...


Author: rsandifo
Date: Wed Nov 30 19:07:58 2016
New Revision: 243058

URL: https://gcc.gnu.org/viewcvs?rev=243058&root=gcc&view=rev
Log:
Add extra ivopts candidates for scaled indices

[Branch only patch -- not intended for trunk in its current state]

This patch makes ivopts consider candidates in which a preexisting
iv is multipled by a small value in order to make a legitimate
scaled index.  We should check whether this still makes a difference
with the current compiler before deciding whether to clean it up
for trunk.

Modified:
    branches/ARM/sve-branch/gcc/tree-ssa-loop-ivopts.c


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