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re PR rtl-optimization/34012 (Pessimization caused by fwprop)
authorPaolo Bonzini <bonzini@gnu.org>
Fri, 9 Nov 2007 13:02:25 +0000 (13:02 +0000)
committerJakub Jelinek <jakub@gcc.gnu.org>
Fri, 9 Nov 2007 13:02:25 +0000 (14:02 +0100)
commitde266950570fd88e4e205bfb87bcbd7ba89b5c27
tree2787d0ea1d32fb11d9a9124a3793a190bc159486tree
parent96cdfb52ff5c5ff9c7b73ef81b23fc1e637b925bcommit | diff
re PR rtl-optimization/34012 (Pessimization caused by fwprop)

PR rtl-optimization/34012
* fwprop.c (try_fwprop_subst): Do not replace if the new
SET_SRC has a higher cost than the old one.

* gcc.target/i386/pr34012.c: New test.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r130043
gcc/ChangeLog diff | blob | history
gcc/fwprop.c diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.target/i386/pr34012.c [new file with mode: 0644] blob