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r157263 - in /trunk/gcc: ChangeLog regrename.c


Author: bernds
Date: Sun Mar  7 15:20:12 2010
New Revision: 157263

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157263
Log:
	PR rtl-optimization/42220
	* regrename.c (scan_rtx) <case STRICT_LOW_PART, ZERO_EXTRACT>:
	Use verify_reg_tracked to determine if we should use OP_OUT rather
	than OP_INOUT.
	(build_def_use): If we see an in-out operand for a register that we
	know nothing about, treat is an output if possible, fail the block if
	not.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/regrename.c


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