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Fix the lost line numbers on simple assignments.

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Instead of storing the generating statement in the dagnode, the generating
expression is stored in the daglabel. The daglabel's expression pointer is
updated each time the label is attached to a node. Now I know why debugging
optimized code can be... interesting.
This commit is contained in:
Bill Currie 2012-11-17 12:07:27 +09:00
parent 43d77900d5
commit 0bb2fc1891
2 changed files with 17 additions and 15 deletions
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2
tools/qfcc/include/dags.h
View file

@ -52,6 +52,7 @@ typedef struct daglabel_s {
const char *opcode; ///< not if op
struct operand_s *op; ///< not if opcode;
struct dagnode_s *dagnode; ///< node with which this label is associated
struct expr_s *expr; ///< expression associated with this label
} daglabel_t;
typedef struct dagnode_s {
@ -62,7 +63,6 @@ typedef struct dagnode_s {
st_type_t type; ///< type of node (st_node = leaf)
daglabel_t *label; ///< ident/const if leaf node, or operator
etype_t tl;
struct statement_s *statement; ///< statement generating this node
/// \name child nodes
/// All three child nodes will be null if this node is a leaf
/// If \a a is null, both \a b and \a c must also be null. If \a is not

30
tools/qfcc/source/dags.c
View file

@ -115,12 +115,13 @@ daglabel_string (daglabel_t *label)
}
static daglabel_t *
opcode_label (const char *opcode)
opcode_label (const char *opcode, expr_t *expr)
{
daglabel_t *label;
label = new_label ();
label->opcode = opcode;
label->expr = expr;
return label;
}
@ -169,7 +170,7 @@ operand_label (operand_t *op)
}
static dagnode_t *
leaf_node (operand_t *op)
leaf_node (operand_t *op, expr_t *expr)
{
daglabel_t *label;
dagnode_t *node;
@ -180,6 +181,7 @@ leaf_node (operand_t *op)
node->tl = op->type;
label = operand_label (op);
label->dagnode = node;
label->expr = expr;
node->label = label;
return node;
}
@ -298,17 +300,17 @@ dag_create (const flownode_t *flownode)
flow_analyze_statement (s, 0, 0, 0, operands);
if (!(ny = node (operands[1]))) {
ny = leaf_node (operands[1]);
ny = leaf_node (operands[1], s->expr);
if (s->type == st_assign) {
*dagtail = ny;
dagtail = &ny->next;
}
}
if (!(nz = node (operands[2])))
nz = leaf_node (operands[2]);
nz = leaf_node (operands[2], s->expr);
if (!(nw = node (operands[3])))
nw = leaf_node (operands[3]);
op = opcode_label (s->opcode);
nw = leaf_node (operands[3], s->expr);
op = opcode_label (s->opcode, s->expr);
if (s->type == st_assign) {
n = ny;
} else {
@ -318,7 +320,6 @@ dag_create (const flownode_t *flownode)
}
if (!n) {
n = new_node ();
n->statement = s;
n->type = s->type;
n->label = op;
n->a = ny;
@ -343,6 +344,7 @@ dag_create (const flownode_t *flownode)
if (lx) {
if (lx->prev)
daglabel_detatch (lx);
lx->expr = s->expr;
dagnode_attach_label (n, lx);
}
}
@ -432,7 +434,7 @@ generate_assignments (sblock_t *block, operand_t *src, daglabel_t *var)
while (dst->op_type == op_alias)
dst = dst->o.alias;
}
st = build_statement ("=", src, vop, 0, 0);//FIXME expr
st = build_statement ("=", src, vop, 0, var->expr);
sblock_add_statement (block, st);
var = var->next;
}
@ -461,15 +463,15 @@ dag_gencode (sblock_t *block, const dagnode_t *dagnode)
opb = fix_op_type (dag_gencode (block, dagnode->b),
dagnode->tb);
if (!(var = dagnode->identifiers)) {
opc = temp_operand (get_type (dagnode->statement->expr));
opc = temp_operand (get_type (dagnode->label->expr));
} else {
opc = fix_op_type (var->op,
extract_type (dagnode->statement->expr));
extract_type (dagnode->label->expr));
var = var->next;
}
dst = opc;
st = build_statement (dagnode->label->opcode, opa, opb, opc,
dagnode->statement->expr);
dagnode->label->expr);
sblock_add_statement (block, st);
generate_assignments (block, opc, var);
break;
@ -482,7 +484,7 @@ dag_gencode (sblock_t *block, const dagnode_t *dagnode)
opc = fix_op_type (dag_gencode (block, dagnode->c),
dagnode->tc);
st = build_statement (dagnode->label->opcode, opa, opb, opc,
dagnode->statement->expr);
dagnode->label->expr);
sblock_add_statement (block, st);
break;
case st_move:
@ -498,7 +500,7 @@ dag_gencode (sblock_t *block, const dagnode_t *dagnode)
opc = fix_op_type (dag_gencode (block, dagnode->c),
dagnode->tc);
st = build_statement (dagnode->label->opcode, opa, opb, opc,
dagnode->statement->expr);
dagnode->label->expr);
sblock_add_statement (block, st);
break;
case st_flow:
@ -507,7 +509,7 @@ dag_gencode (sblock_t *block, const dagnode_t *dagnode)
opb = fix_op_type (dag_gencode (block, dagnode->b),
dagnode->tb);
st = build_statement (dagnode->label->opcode, opa, opb, 0,
dagnode->statement->expr);
dagnode->label->expr);
sblock_add_statement (block, st);
break;
}