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From-SVN: r182506
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Richard Sandiford 2011-12-19 22:23:42 +00:00
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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.