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This patch disables propagation of ipcp information into partitions where all instances of the node are marked to be inlined. Motivation: Incremental LTO needs stable values between compilations to be effective. This requirement fails with following example: void heavily_used_function(int); ... heavily_used_function(__LINE__); Ipcp creates long list of all __LINE__ arguments, and then propagates it with every function clone, even though for inlined functions this information is not useful. gcc/ChangeLog: * ipa-prop.cc (write_ipcp_transformation_info): Disable uneeded value propagation. * lto-cgraph.cc (lto_symtab_encoder_encode): Default values. (lto_symtab_encoder_always_inlined_p): New. (lto_set_symtab_encoder_not_always_inlined): New. (add_node_to): Set always inlined. * lto-streamer.h (struct lto_encoder_entry): New field. (lto_symtab_encoder_always_inlined_p): New. |
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This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.