[Bug middle-end/25724] Emits call to __cmpdi2 for long long comparison in switches

[sayle at gcc dot gnu dot org]

------- Comment #8 from sayle at gcc dot gnu dot org  2006-02-13 01:55 -------
Subject: Bug 25724

Author: sayle
Date: Mon Feb 13 01:55:37 2006
New Revision: 110906

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110906
Log:

        PR middle-end/25724
        * dojump.c (do_jump): Call do_compare_rtx_and_jump.
        (do_jump_parts_zero_rtx): New function renamed from
        do_jump_parts_equality_rtx.  Made static.  Add a mode argument.
        (do_jump_parts_equality_rtx): New function split out from
        do_jump_parts_equality.  Old implementation renamed as above.
        Call do_jump_parts_zero_rtx if either operand is zero.
        (do_jump_parts_equality): Call do_jump_parts_equality_rtx to
        do all of the heavy lifting.
        (do_compare_rtx_and_jump): Handle multi-word comparisons by
        calling either do_jump_by_parts_greater_rtx or
        do_jump_by_parts_equality_rtx.
        * expr.h (do_jump_by_parts_equality_rtx): Remove prototype.
        * expmed.c (do_cmp_and_jump): Now multi-word optimization has
        moved to do_compare_rtx_and_jump, call it directly.
        * stmt.c (do_jump_if_equal): Remove static prototype.  Add a
        mode argument.  Call do_compare_rtx_and_jump.
        (emit_case_nodes): Update calls to do_jump_if_equal.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dojump.c
    trunk/gcc/expmed.c
    trunk/gcc/expr.h
    trunk/gcc/stmt.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25724