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tree-ssa-sccvn.c (vn_get_expr_for): Handle CONSTRUCTOR of vector type. 

2011-10-05  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-sccvn.c (vn_get_expr_for): Handle CONSTRUCTOR of
	vector type.
	(simplify_unary_expression): Handle BIT_FIELD_REFs.
	(try_to_simplify): Handle BIT_FIELD_REFs.

From-SVN: r179549
This commit is contained in:
Richard Guenther 2011-10-05 12:25:35 +00:00 committed by Richard Biener
parent 4c4973ab36
commit 18474649d9
2 changed files with 31 additions and 5 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2011-10-05 Richard Guenther <rguenther@suse.de>
* tree-ssa-sccvn.c (vn_get_expr_for): Handle CONSTRUCTOR of
vector type.
(simplify_unary_expression): Handle BIT_FIELD_REFs.
(try_to_simplify): Handle BIT_FIELD_REFs.
2011-10-05 Georg-Johann Lay <avr@gjlay.de>
* config/avr/avr-protos.h (avr_out_addto_sp): New prototype.

29
gcc/tree-ssa-sccvn.c
View File

@ -275,6 +275,13 @@ vn_get_expr_for (tree name)
gimple_assign_rhs2 (def_stmt));
break;
case tcc_exceptional:
if (code == CONSTRUCTOR
&& TREE_CODE
(TREE_TYPE (gimple_assign_rhs1 (def_stmt))) == VECTOR_TYPE)
expr = gimple_assign_rhs1 (def_stmt);
break;
default:;
}
if (expr == NULL_TREE)
@ -2922,7 +2929,8 @@ simplify_unary_expression (gimple stmt)
GIMPLE_ASSIGN_SINGLE codes. */
if (code == REALPART_EXPR
|| code == IMAGPART_EXPR
|| code == VIEW_CONVERT_EXPR)
|| code == VIEW_CONVERT_EXPR
|| code == BIT_FIELD_REF)
op0 = TREE_OPERAND (op0, 0);
if (TREE_CODE (op0) != SSA_NAME)
@ -2934,7 +2942,8 @@ simplify_unary_expression (gimple stmt)
else if (CONVERT_EXPR_CODE_P (code)
|| code == REALPART_EXPR
|| code == IMAGPART_EXPR
|| code == VIEW_CONVERT_EXPR)
|| code == VIEW_CONVERT_EXPR
|| code == BIT_FIELD_REF)
{
/* We want to do tree-combining on conversion-like expressions.
Make sure we feed only SSA_NAMEs or constants to fold though. */
@ -2943,6 +2952,7 @@ simplify_unary_expression (gimple stmt)
|| BINARY_CLASS_P (tem)
|| TREE_CODE (tem) == VIEW_CONVERT_EXPR
|| TREE_CODE (tem) == SSA_NAME
|| TREE_CODE (tem) == CONSTRUCTOR
|| is_gimple_min_invariant (tem))
op0 = tem;
}
@ -2951,7 +2961,14 @@ simplify_unary_expression (gimple stmt)
if (op0 == orig_op0)
return NULL_TREE;
result = fold_unary_ignore_overflow (code, gimple_expr_type (stmt), op0);
if (code == BIT_FIELD_REF)
{
tree rhs = gimple_assign_rhs1 (stmt);
result = fold_ternary (BIT_FIELD_REF, TREE_TYPE (rhs),
op0, TREE_OPERAND (rhs, 1), TREE_OPERAND (rhs, 2));
}
else
result = fold_unary_ignore_overflow (code, gimple_expr_type (stmt), op0);
if (result)
{
STRIP_USELESS_TYPE_CONVERSION (result);
@ -2989,7 +3006,8 @@ try_to_simplify (gimple stmt)
/* Fallthrough for some unary codes that can operate on registers. */
if (!(code == REALPART_EXPR
|| code == IMAGPART_EXPR
|| code == VIEW_CONVERT_EXPR))
|| code == VIEW_CONVERT_EXPR
|| code == BIT_FIELD_REF))
break;
/* We could do a little more with unary ops, if they expand
into binary ops, but it's debatable whether it is worth it. */
@ -3159,7 +3177,8 @@ visit_use (tree use)
/* VOP-less references can go through unary case. */
if ((code == REALPART_EXPR
|| code == IMAGPART_EXPR
|| code == VIEW_CONVERT_EXPR)
|| code == VIEW_CONVERT_EXPR
|| code == BIT_FIELD_REF)
&& TREE_CODE (TREE_OPERAND (rhs1, 0)) == SSA_NAME)
{
changed = visit_nary_op (lhs, stmt);