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
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gcc/testsuite/gcc.target/i386/pr34012.c
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