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Hello! Attached patch disparages riF->o alternative of *movti_internal_rex64 insn, as described by Vlad in comment #2 [1] The core of the problem however is, that gcc is unable to detect zero-extended address as offsetable. H.J. will propose a patch for this [2]. 2012-11-10 Vladimir Makarov <vmakarov@redhat.com> Uros Bizjak <ubizjak@gmail.com> PR target/55247 * config/i386/i386.md (*movti_internal_rex64): Add "!" to riF->o alternative. testsuite/ChangeLog: 2012-11-10 Uros Bizjak <ubizjak@gmail.com> PR target/55247 * gcc.target/i386/pr55247.c: New test. Tested on x86_64-linux-gnu {,m32} and committed to mainline SVN. [1] gcc.gnu.org/bugzilla/show_bug.cgi?id=55247#c2 [2] http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55247#c6 Uros.
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