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* config/bfin-parse.y (binary): Do some more constant folding for

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additions.
This commit is contained in:
Bernd Schmidt
2006-09-15 17:02:35 +00:00
parent 76052d04e0
commit c4ae04ceb1
2 changed files with 26 additions and 6 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
2006-09-15 Bernd Schmidt <bernd.schmidt@analog.com>
* config/bfin-parse.y (binary): Do some more constant folding for
additions.
2006-09-13 Jan Beulich <jbeulich@novell.com> 2006-09-13 Jan Beulich <jbeulich@novell.com>
* input-file.c (input_file_give_next_buffer): Demote as_bad to * input-file.c (input_file_give_next_buffer): Demote as_bad to

21
gas/config/bfin-parse.y
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@ -4270,6 +4270,8 @@ value_match (Expr_Node *expr, int sz, int sign, int mul, int issigned)
static Expr_Node * static Expr_Node *
binary (Expr_Op_Type op, Expr_Node *x, Expr_Node *y) binary (Expr_Op_Type op, Expr_Node *x, Expr_Node *y)
{ {
Expr_Node_Value val;
if (x->type == Expr_Node_Constant && y->type == Expr_Node_Constant) if (x->type == Expr_Node_Constant && y->type == Expr_Node_Constant)
{ {
switch (op) switch (op)
@ -4319,14 +4321,27 @@ binary (Expr_Op_Type op, Expr_Node *x, Expr_Node *y)
} }
return x; return x;
} }
else /* Canonicalize order to EXPR OP CONSTANT. */
if (x->type == Expr_Node_Constant)
{ {
Expr_Node *t = x;
x = y;
y = t;
}
if (y->type == Expr_Node_Constant && x->type == Expr_Node_Binop
&& x->Right_Child->type == Expr_Node_Constant)
{
if (op == x->value.op_value && x->value.op_value == Expr_Op_Type_Add)
{
x->Right_Child->value.i_value += y->value.i_value;
return x;
}
}
/* Create a new expression structure. */ /* Create a new expression structure. */
Expr_Node_Value val;
val.op_value = op; val.op_value = op;
return Expr_Node_Create (Expr_Node_Binop, val, x, y); return Expr_Node_Create (Expr_Node_Binop, val, x, y);
} }
}
static Expr_Node * static Expr_Node *
unary (Expr_Op_Type op, Expr_Node *x) unary (Expr_Op_Type op, Expr_Node *x)