[Bug target/25554] [3.4/4.0/4.1/4.2 Regression] unrecognizable insn on x86_64 with -O2 -ftracer ( -fno-tree-dominator-opts on the mainline)

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2006-01-04 08:15 -------
Subject: Bug 25554

Author: jakub
Date: Wed Jan  4 08:15:06 2006
New Revision: 109317

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109317
Log:
        PR target/25554
        * config/i386/i386.md (testqi_ext_3): Ensure len is positive
        and pos non-negative and pos + len <= 32.
        (testqi_ext_3_rex64): Ensure len is positive and pos non-negative,
        drop pos + len < HOST_BITS_PER_WIDE_INT test.
        (testqi_ext_3* splitter): Handle pos + len == HOST_BITS_PER_WIDE_INT.

        * gcc.c-torture/compile/20051228-1.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/20051228-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25554