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r206638 - in /trunk/gcc: ChangeLog ree.c testsu...


Author: law
Date: Wed Jan 15 18:13:52 2014
New Revision: 206638

URL: http://gcc.gnu.org/viewcvs?rev=206638&root=gcc&view=rev
Log:
	PR tree-optimization/59747
	* ree.c (find_and_remove_re): Properly handle case where a second
	eliminated extension requires widening a copy created for elimination
	of a prior extension.
	(combine_set_extension): Ensure that the number of hard regs needed
	for a destination register does not change when we widen it.

	PR tree-optimization/59747
	* gcc.c-torture/execute/pr59747.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr59747.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ree.c
    trunk/gcc/testsuite/ChangeLog


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