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combine.c (gen_binary): Remove.

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2004-05-25  Paolo Bonzini  <bonzini@gnu.org>

        * combine.c (gen_binary): Remove.
        (known_cond, simplify_shift_const
        find_split_point, combine_simplify_rtx,
        simplify_if_then_else, simplify_set,
        simplify_logical, expand_field_assignment,
        extract_left_shift, force_to_mode,
        if_then_else_cond, apply_distributive_law,
        simplify_and_const_int, simplify_shift_const,
        gen_lowpart_for_combine, simplify_comparison,
        reversed_comparison): Replace with
        simplify_gen_binary, simplify_gen_relational or
        distribute_and_simplify_rtx.
        (distribute_and_simplify_rtx): New function.
        * simplify-rtx.c (simplify_binary_operation):
        Use nonzero_bits to simplify ANDs where we are
        turning off bits already known to be off in OP0.

From-SVN: r82317
This commit is contained in:
Paolo Bonzini 2004-05-27 08:28:31 +00:00 committed by Paolo Bonzini
parent 42f806e5a0
commit dce1438a65
3 changed files with 342 additions and 297 deletions
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19
gcc/ChangeLog
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@ -1,3 +1,22 @@
2004-05-25 Paolo Bonzini <bonzini@gnu.org>
* combine.c (gen_binary): Remove.
(known_cond, simplify_shift_const
find_split_point, combine_simplify_rtx,
simplify_if_then_else, simplify_set,
simplify_logical, expand_field_assignment,
extract_left_shift, force_to_mode,
if_then_else_cond, apply_distributive_law,
simplify_and_const_int, simplify_shift_const,
gen_lowpart_for_combine, simplify_comparison,
reversed_comparison): Replace with
simplify_gen_binary, simplify_gen_relational or
distribute_and_simplify_rtx.
(distribute_and_simplify_rtx): New function.
* simplify-rtx.c (simplify_binary_operation):
Use nonzero_bits to simplify ANDs where we are
turning off bits already known to be off in OP0.
2004-05-27 Alan Modra <amodra@bigpond.net.au>
PR target/14478

614
gcc/combine.c
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File diff suppressed because it is too large Load Diff

6
gcc/simplify-rtx.c
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@ -1844,9 +1844,11 @@ simplify_binary_operation (enum rtx_code code, enum machine_mode mode,
case AND:
if (trueop1 == const0_rtx && ! side_effects_p (op0))
return const0_rtx;
/* If we are turning off bits already known off in OP0, we need
not do an AND. */
if (GET_CODE (trueop1) == CONST_INT
&& ((INTVAL (trueop1) & GET_MODE_MASK (mode))
== GET_MODE_MASK (mode)))
&& GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT
&& (nonzero_bits (trueop0, mode) & ~INTVAL (trueop1)) == 0)
return op0;
if (trueop0 == trueop1 && ! side_effects_p (op0)
&& GET_MODE_CLASS (mode) != MODE_CC)