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authorRichard Sandiford <rsandifo@gcc.gnu.org>2011-12-19 22:23:42 +0000
committerRichard Sandiford <rsandifo@gcc.gnu.org>2011-12-19 22:23:42 +0000
commit77a748f8879210e7c9758fca1d9beb4b1aaff691 (patch)
tree95bf4a103836306ab59577241e85ce2715714b82
parent4f7002c581dfde7cb9506dc685e8b7b48f41bf00 (diff)
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From-SVN: r182506
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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.