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2011-12-19 Richard Guenther <rguenther@suse.de> PR lto/51573 * streamer-hooks.h (struct streamer_hooks): Add second ref_p parameter to write_tree. (stream_write_tree): Adjust. (stream_write_tree_shallow_non_ref): New define. * lto-streamer.h (lto_output_tree): Adjust. * lto-streamer-out.c (lto_output_tree): Likewise. * tree-streamer-out.c (streamer_write_chain): Only force the immediate tree to be streamed as non-reference. * gcc.dg/lto/20111207-2_0.c: Adjust. * g++.dg/lto/pr51573-1_0.C: New testcase. From-SVN: r182487
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