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tree-ssa-forwprop.c (get_prop_source_stmt): Simplify.

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2012-09-19  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-forwprop.c (get_prop_source_stmt): Simplify.

From-SVN: r191467
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Richard Guenther 2012-09-19 11:03:51 +00:00 committed by Richard Biener
parent b5493fb2fa
commit ef78c9c7e6
2 changed files with 9 additions and 19 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2012-09-19 Richard Guenther <rguenther@suse.de>
* tree-ssa-forwprop.c (get_prop_source_stmt): Simplify.
2012-09-19 Jan Hubicka <jh@suse.cz>
* symtab.c (insert_to_assembler_name_hash): Do not insert

24
gcc/tree-ssa-forwprop.c
View File

@ -227,29 +227,15 @@ get_prop_source_stmt (tree name, bool single_use_only, bool *single_use_p)
if (!is_gimple_assign (def_stmt))
return NULL;
/* If def_stmt is not a simple copy, we possibly found it. */
if (!gimple_assign_ssa_name_copy_p (def_stmt))
/* If def_stmt is a simple copy, continue looking. */
if (gimple_assign_rhs_code (def_stmt) == SSA_NAME)
name = gimple_assign_rhs1 (def_stmt);
else
{
tree rhs;
if (!single_use_only && single_use_p)
*single_use_p = single_use;
/* We can look through pointer conversions in the search
for a useful stmt for the comparison folding. */
rhs = gimple_assign_rhs1 (def_stmt);
if (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (def_stmt))
&& TREE_CODE (rhs) == SSA_NAME
&& POINTER_TYPE_P (TREE_TYPE (gimple_assign_lhs (def_stmt)))
&& POINTER_TYPE_P (TREE_TYPE (rhs)))
name = rhs;
else
return def_stmt;
}
else
{
/* Continue searching the def of the copy source name. */
name = gimple_assign_rhs1 (def_stmt);
return def_stmt;
}
} while (1);
}