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Expose find_operands.

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It has proven to be a generally useful function, not just for dags.
This commit is contained in:
Bill Currie 2012-11-06 15:29:38 +09:00
parent 0a2ce6d381
commit c00e666668
3 changed files with 49 additions and 47 deletions
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2
tools/qfcc/include/statements.h
View file

@ -85,6 +85,8 @@ typedef struct sblock_s {
struct expr_s;
int find_operands (statement_t *s, operand_t **x, operand_t **y, operand_t **z,
operand_t **w);
sblock_t *make_statements (struct expr_s *expr);
void print_statement (statement_t *s);
void print_sblock (sblock_t *sblock, const char *filename);

47
tools/qfcc/source/dags.c
View file

@ -200,53 +200,6 @@ node (operand_t *op)
return 0;
}
static int
find_operands (statement_t *s, operand_t **x, operand_t **y, operand_t **z,
operand_t **w)
{
int simp = 0;
if (s->opc) {
*y = s->opa;
if (s->opb) {
// except for move, indexed pointer store, rcall2+, and state,
// all are of the form c = a op b
*z = s->opb;
if (!strncmp (s->opcode, "<MOVE", 5)
|| !strncmp (s->opcode, "<RCALL", 6)
|| !strcmp (s->opcode, "<STATE>")
|| !strcmp (s->opcode, ".=")) {
*w = s->opc;
} else {
*x = s->opc;
}
} else {
// these are all c = op a
*x = s->opc;
}
} else if (s->opb) {
*y = s->opa;
if (s->opcode[1] == 'I') {
// conditional
} else if (s->opcode[0] == '<' || s->opcode[0] == '.') {
// pointer store or branch
*z = s->opb;
} else {
// b = a
*x = s->opb;
simp = 1;
}
} else if (s->opa) {
if (s->opcode[1] == 'G') {
} else {
*y = s->opa;
if (s->opcode[1] == 'R')
simp = 1;
}
}
return simp;
}
static int
dagnode_match (const dagnode_t *n, const daglabel_t *op,
const dagnode_t *y, const dagnode_t *z, const dagnode_t *w)

47
tools/qfcc/source/statements.c
View file

@ -211,6 +211,53 @@ print_statement (statement_t *s)
printf (")\n");
}
int
find_operands (statement_t *s, operand_t **x, operand_t **y, operand_t **z,
operand_t **w)
{
int simp = 0;
if (s->opc) {
*y = s->opa;
if (s->opb) {
// except for move, indexed pointer store, rcall2+, and state,
// all are of the form c = a op b
*z = s->opb;
if (!strncmp (s->opcode, "<MOVE", 5)
|| !strncmp (s->opcode, "<RCALL", 6)
|| !strcmp (s->opcode, "<STATE>")
|| !strcmp (s->opcode, ".=")) {
*w = s->opc;
} else {
*x = s->opc;
}
} else {
// these are all c = op a
*x = s->opc;
}
} else if (s->opb) {
*y = s->opa;
if (s->opcode[1] == 'I') {
// conditional
} else if (s->opcode[0] == '<' || s->opcode[0] == '.') {
// pointer store or branch
*z = s->opb;
} else {
// b = a
*x = s->opb;
simp = 1;
}
} else if (s->opa) {
if (s->opcode[1] == 'G') {
} else {
*y = s->opa;
if (s->opcode[1] == 'R')
simp = 1;
}
}
return simp;
}
static sblock_t *free_sblocks;
static statement_t *free_statements;
static operand_t *free_operands;