[Bug middle-end/35897] DSE doesn't support targets with wide registers

[hjl at gcc dot gnu dot org]

------- Comment #5 from hjl at gcc dot gnu dot org  2008-04-11 15:53 -------
Subject: Bug 35897

Author: hjl
Date: Fri Apr 11 15:52:19 2008
New Revision: 134199

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134199
Log:
2008-04-11  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/35897
        * dse.c (store_info): Change positions_needed to unsigned
        HOST_WIDE_INT.
        (lowpart_bitmask): New.
        (record_store): Cast to unsigned HOST_WIDE_INT for
        positions_needed.  Assert width <= size of positions_needed *
        CHAR_BIT.  Call lowpart_bitmask to initialize positions_needed.
        (check_mem_read_rtx): Use unsigned HOST_WIDE_INT on mask.  Call
        lowpart_bitmask to set mask.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dse.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35897