Commit 77a748f8 by Richard Sandiford

Add a PR reference.

From-SVN: r182506
parent 4f7002c5
2011-12-19 Richard Sandiford <rdsandiford@googlemail.com>
PR rtl-optimization/42839
* fwprop.c (forward_propagate_subreg): Skip the SIGN/ZERO_EXTEND
optimization if the source register is already extended.
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