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r242946 - in /trunk/gcc: ChangeLog simplify-rtx.c


Author: segher
Date: Tue Nov 29 01:48:30 2016
New Revision: 242946

URL: https://gcc.gnu.org/viewcvs?rev=242946&root=gcc&view=rev
Log:
simplify-rtx: Handle truncate of extract

simplify_truncation changes the truncation of many operations into
the operation on the truncation.  This patch makes this code also
handle extracts.


	* simplify-rtx.c (simplify_truncation): Handle truncate of zero_extract
	and sign_extract.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c


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