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tree-ssa-loop-ivopts.c (strip_offset_1): Treat POINTER_PLUS_EXPR like PLUS_EXPR. 

2007-07-03  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-ssa-loop-ivopts.c (strip_offset_1): Treat POINTER_PLUS_EXPR
        like PLUS_EXPR.
        (rewrite_use_nonlinear_expr): Likewise.

From-SVN: r126298
This commit is contained in:
Andrew Pinski 2007-07-04 04:39:26 +00:00 committed by Andrew Pinski
parent cc0ca51203
commit 2d1a1007a0
2 changed files with 14 additions and 6 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-07-03 Andrew Pinski <andrew_pinski@playstation.sony.com>
* tree-ssa-loop-ivopts.c (strip_offset_1): Treat POINTER_PLUS_EXPR
like PLUS_EXPR.
(rewrite_use_nonlinear_expr): Likewise.
2007-07-03 Seongbae Park <seongbae.park@gmail.com>
* rtl.def (UNSPEC, USE, CLOBBER): More comments.

14
gcc/tree-ssa-loop-ivopts.c
View File

@ -1759,6 +1759,7 @@ strip_offset_1 (tree expr, bool inside_addr, bool top_compref,
*offset = int_cst_value (expr);
return build_int_cst (orig_type, 0);
case POINTER_PLUS_EXPR:
case PLUS_EXPR:
case MINUS_EXPR:
op0 = TREE_OPERAND (expr, 0);
@ -1767,7 +1768,7 @@ strip_offset_1 (tree expr, bool inside_addr, bool top_compref,
op0 = strip_offset_1 (op0, false, false, &off0);
op1 = strip_offset_1 (op1, false, false, &off1);
*offset = (code == PLUS_EXPR ? off0 + off1 : off0 - off1);
*offset = (code == MINUS_EXPR ? off0 - off1 : off0 + off1);
if (op0 == TREE_OPERAND (expr, 0)
&& op1 == TREE_OPERAND (expr, 1))
return orig_expr;
@ -1776,10 +1777,10 @@ strip_offset_1 (tree expr, bool inside_addr, bool top_compref,
expr = op0;
else if (integer_zerop (op0))
{
if (code == PLUS_EXPR)
expr = op1;
else
if (code == MINUS_EXPR)
expr = fold_build1 (NEGATE_EXPR, type, op1);
else
expr = op1;
}
else
expr = fold_build2 (code, type, op0, op1);
@ -4893,11 +4894,12 @@ rewrite_use_nonlinear_expr (struct ivopts_data *data,
thus leading to ICE. */
op = GIMPLE_STMT_OPERAND (use->stmt, 1);
if (TREE_CODE (op) == PLUS_EXPR
|| TREE_CODE (op) == MINUS_EXPR)
|| TREE_CODE (op) == MINUS_EXPR
|| TREE_CODE (op) == POINTER_PLUS_EXPR)
{
if (TREE_OPERAND (op, 0) == cand->var_before)
op = TREE_OPERAND (op, 1);
else if (TREE_CODE (op) == PLUS_EXPR
else if (TREE_CODE (op) != MINUS_EXPR
&& TREE_OPERAND (op, 1) == cand->var_before)
op = TREE_OPERAND (op, 0);
else