* is entered when -fintrin is used (causing all existing builtins to
* be ignored by the compiler and instead interface through here.
*/
-#define INTRIN_VAL(VALUE, NAME, FUNC, STYPE, VTYPE) \
- do { \
- (VALUE) = ast_value_new ( \
- parser_ctx(intrin->parser), \
- "__builtin_" NAME, \
- TYPE_FUNCTION \
- ); \
- (VALUE)->expression.next = (ast_expression*)ast_value_new ( \
- parser_ctx(intrin->parser), \
- STYPE, \
- VTYPE \
- ); \
- (FUNC) = ast_function_new ( \
- parser_ctx(intrin->parser), \
- "__builtin_" NAME, \
- (VALUE) \
- ); \
- } while (0)
-
-#define INTRIN_REG(FUNC, VALUE) \
- do { \
- vec_push(intrin->parser->functions, (FUNC)); \
- vec_push(intrin->parser->globals, (ast_expression*)(VALUE)); \
- } while (0)
-
-#define QC_M_E 2.71828182845905f
-
-static ast_expression *intrin_pow (intrin_t *intrin) {
+#define intrin_ctx(I) parser_ctx((I)->parser)
+
+static GMQCC_INLINE ast_function *intrin_value(intrin_t *intrin, ast_value **out, const char *name, qcint_t vtype) {
+ ast_value *value = NULL;
+ ast_function *func = NULL;
+ char buffer[1024];
+ char stype [1024];
+
+ util_snprintf(buffer, sizeof(buffer), "__builtin_%s", name);
+ util_snprintf(stype, sizeof(stype), "<%s>", type_name[vtype]);
+
+ value = ast_value_new(intrin_ctx(intrin), buffer, TYPE_FUNCTION);
+ value->intrinsic = true;
+ value->expression.next = (ast_expression*)ast_value_new(intrin_ctx(intrin), stype, vtype);
+ func = ast_function_new(intrin_ctx(intrin), buffer, value);
+ value->expression.flags |= AST_FLAG_ERASEABLE;
+
+ *out = value;
+ return func;
+}
+
+static GMQCC_INLINE void intrin_reg(intrin_t *intrin, ast_value *const value, ast_function *const func) {
+ vec_push(intrin->parser->functions, func);
+ vec_push(intrin->parser->globals, (ast_expression*)value);
+}
+
+#define QC_M_E 2.718281828459045f
+#define QC_POW_EPSILON 0.00001f
+
+/*
+ * since some intrinsics depend on each other there is the possibility
+ * that an intrinsic will fail to get a 'depended' function that a
+ * builtin needs, causing some dependency in the chain to have a NULL
+ * function. This will cause a segmentation fault at code generation,
+ * even though an error was raised. To contiue to allow it (instead
+ * of stopping compilation right away). We need to return from the
+ * parser, before compilation stops after all the collected errors.
+ */
+static ast_expression *intrin_func_self(intrin_t *intrin, const char *name, const char *from);
+static ast_expression *intrin_nullfunc(intrin_t *intrin) {
+ ast_value *value = NULL;
+ ast_function *func = intrin_value(intrin, &value, NULL, TYPE_VOID);
+ intrin_reg(intrin, value, func);
+ return (ast_expression*)value;
+}
+
+static ast_expression *intrin_pow(intrin_t *intrin) {
/*
- * float pow(float x, float y) {
- * float local = 1.0f;
- * while (y > 0) {
- * while (!(y & 1)) {
- * y >>= 2;
- * x *= x;
+ *
+ * float pow(float base, float exp) {
+ * float result;
+ * float low;
+ * float high;
+ * float mid;
+ * float square;
+ * float accumulate;
+ *
+ * if (exp == 0.0)
+ * return base;
+ * if (exp < 0)
+ * return 1.0 / pow(base, -exp);
+ * if (exp >= 1) {
+ * result = pow(base, exp / 2);
+ * return result * result;
+ * }
+ *
+ * low = 0.0f;
+ * high = 1.0f;
+ * square = sqrt(base);
+ * accumulate = square;
+ * mid = high / 2.0f
+ *
+ * while (fabs(mid - exp) > QC_POW_EPSILON) {
+ * square = sqrt(square);
+ * if (mid < exp) {
+ * low = mid;
+ * accumulate *= square;
+ * } else {
+ * high = mid;
+ * accumulate *= (1.0f / square);
+ * }
+ * mid = (low + high) / 2;
* }
- * y--;
- * local *= x;
- * }
- * return local;
+ * return accumulate;
* }
*/
- static ast_value *value = NULL;
-
- if (!value) {
- ast_value *arg1 = ast_value_new(parser_ctx(intrin->parser), "x", TYPE_FLOAT);
- ast_value *arg2 = ast_value_new(parser_ctx(intrin->parser), "y", TYPE_FLOAT);
- ast_value *local = ast_value_new(parser_ctx(intrin->parser), "local", TYPE_FLOAT);
- ast_block *body = ast_block_new(parser_ctx(intrin->parser));
- ast_block *l1b = ast_block_new(parser_ctx(intrin->parser)); /* loop 1 body */
- ast_block *l2b = ast_block_new(parser_ctx(intrin->parser)); /* loop 2 body */
- ast_loop *loop1 = NULL;
- ast_loop *loop2 = NULL;
- ast_function *func = NULL;
-
- INTRIN_VAL(value, "pow", func, "<float>", TYPE_FLOAT);
-
- /* arguments */
- vec_push(value->expression.params, arg1);
- vec_push(value->expression.params, arg2);
-
- /* local */
- vec_push(body->locals, local);
-
- /* assignment to local of value 1.0f */
- vec_push(body->exprs,
- (ast_expression*)ast_store_new (
- parser_ctx(intrin->parser),
- INSTR_STORE_F,
- (ast_expression*)local,
- (ast_expression*)intrin->fold->imm_float[1] /* 1 == 1.0f */
- )
- );
+ ast_value *value = NULL;
+ ast_function *func = intrin_value(intrin, &value, "pow", TYPE_FLOAT);
+
+ /* prepare some calls for later */
+ ast_call *callpow1 = ast_call_new(intrin_ctx(intrin), (ast_expression*)value); /* for pow(base, -exp) */
+ ast_call *callpow2 = ast_call_new(intrin_ctx(intrin), (ast_expression*)value); /* for pow(vase, exp / 2) */
+ ast_call *callsqrt1 = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "sqrt", "pow")); /* for sqrt(base) */
+ ast_call *callsqrt2 = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "sqrt", "pow")); /* for sqrt(square) */
+ ast_call *callfabs = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "fabs", "pow")); /* for fabs(mid - exp) */
+
+ /* prepare some blocks for later */
+ ast_block *expgt1 = ast_block_new(intrin_ctx(intrin));
+ ast_block *midltexp = ast_block_new(intrin_ctx(intrin));
+ ast_block *midltexpelse = ast_block_new(intrin_ctx(intrin));
+ ast_block *whileblock = ast_block_new(intrin_ctx(intrin));
+
+ /* float pow(float base, float exp) */
+ ast_value *base = ast_value_new(intrin_ctx(intrin), "base", TYPE_FLOAT);
+ ast_value *exp = ast_value_new(intrin_ctx(intrin), "exp", TYPE_FLOAT);
+ /* { */
+ ast_block *body = ast_block_new(intrin_ctx(intrin));
- /* y >>= 2 */
- vec_push(l2b->exprs,
- (ast_expression*)ast_binstore_new (
- parser_ctx(intrin->parser),
- INSTR_STORE_F,
- INSTR_MUL_F,
- (ast_expression*)arg2,
- (ast_expression*)fold_constgen_float(intrin->parser->fold, 0.25f)
- )
- );
+ /*
+ * float result;
+ * float low;
+ * float high;
+ * float square;
+ * float accumulate;
+ * float mid;
+ */
+ ast_value *result = ast_value_new(intrin_ctx(intrin), "result", TYPE_FLOAT);
+ ast_value *low = ast_value_new(intrin_ctx(intrin), "low", TYPE_FLOAT);
+ ast_value *high = ast_value_new(intrin_ctx(intrin), "high", TYPE_FLOAT);
+ ast_value *square = ast_value_new(intrin_ctx(intrin), "square", TYPE_FLOAT);
+ ast_value *accumulate = ast_value_new(intrin_ctx(intrin), "accumulate", TYPE_FLOAT);
+ ast_value *mid = ast_value_new(intrin_ctx(intrin), "mid", TYPE_FLOAT);
+ vec_push(body->locals, result);
+ vec_push(body->locals, low);
+ vec_push(body->locals, high);
+ vec_push(body->locals, square);
+ vec_push(body->locals, accumulate);
+ vec_push(body->locals, mid);
+
+ vec_push(value->expression.params, base);
+ vec_push(value->expression.params, exp);
+
+ /*
+ * if (exp == 0.0)
+ * return base;
+ */
+ vec_push(body->exprs,
+ (ast_expression*)ast_ifthen_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_EQ_F,
+ (ast_expression*)exp,
+ (ast_expression*)intrin->fold->imm_float[0]
+ ),
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)base
+ ),
+ NULL
+ )
+ );
+
+ /* <callpow1> = pow(base, -exp) */
+ vec_push(callpow1->params, (ast_expression*)base);
+ vec_push(callpow1->params,
+ (ast_expression*)ast_unary_new(
+ intrin_ctx(intrin),
+ VINSTR_NEG_F,
+ (ast_expression*)exp
+ )
+ );
+
+ /*
+ * if (exp < 0)
+ * return 1.0 / <callpow1>;
+ */
+ vec_push(body->exprs,
+ (ast_expression*)ast_ifthen_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_LT,
+ (ast_expression*)exp,
+ (ast_expression*)intrin->fold->imm_float[0]
+ ),
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_DIV_F,
+ (ast_expression*)intrin->fold->imm_float[1],
+ (ast_expression*)callpow1
+ )
+ ),
+ NULL
+ )
+ );
+
+ /* <callpow2> = pow(base, exp / 2) */
+ vec_push(callpow2->params, (ast_expression*)base);
+ vec_push(callpow2->params,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_DIV_F,
+ (ast_expression*)exp,
+ (ast_expression*)fold_constgen_float(intrin->fold, 2.0f)
+ )
+ );
- /* x *= x */
- vec_push(l2b->exprs,
- (ast_expression*)ast_binstore_new (
- parser_ctx(intrin->parser),
- INSTR_STORE_F,
+ /*
+ * <expgt1> = {
+ * result = <callpow2>;
+ * return result * result;
+ * }
+ */
+ vec_push(expgt1->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)result,
+ (ast_expression*)callpow2
+ )
+ );
+ vec_push(expgt1->exprs,
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
INSTR_MUL_F,
- (ast_expression*)arg1,
- (ast_expression*)arg1
+ (ast_expression*)result,
+ (ast_expression*)result
)
- );
+ )
+ );
- /* while (!(y&1)) */
- loop2 = ast_loop_new (
- parser_ctx(intrin->parser),
- NULL,
- (ast_expression*)ast_binary_new (
- parser_ctx(intrin->parser),
- INSTR_AND,
- (ast_expression*)arg2,
- (ast_expression*)intrin->fold->imm_float[1] /* 1 == 1.0f */
+ /*
+ * if (exp >= 1) {
+ * <expgt1>
+ * }
+ */
+ vec_push(body->exprs,
+ (ast_expression*)ast_ifthen_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_GE,
+ (ast_expression*)exp,
+ (ast_expression*)intrin->fold->imm_float[1]
),
- true, /* ! not */
- NULL,
- false,
- NULL,
- (ast_expression*)l2b
- );
+ (ast_expression*)expgt1,
+ NULL
+ )
+ );
- /* push nested loop into loop expressions */
- vec_push(l1b->exprs, (ast_expression*)loop2);
+ /*
+ * <callsqrt1> = sqrt(base)
+ */
+ vec_push(callsqrt1->params, (ast_expression*)base);
- /* y-- */
- vec_push(l1b->exprs,
- (ast_expression*)ast_binstore_new (
- parser_ctx(intrin->parser),
- INSTR_STORE_F,
- INSTR_SUB_F,
- (ast_expression*)arg2,
- (ast_expression*)intrin->fold->imm_float[1] /* 1 == 1.0f */
+ /*
+ * low = 0.0f;
+ * high = 1.0f;
+ * square = sqrt(base);
+ * accumulate = square;
+ * mid = high / 2.0f;
+ */
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)low,
+ (ast_expression*)intrin->fold->imm_float[0]
+ )
+ );
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)high,
+ (ast_expression*)intrin->fold->imm_float[1]
+ )
+ );
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)square,
+ (ast_expression*)callsqrt1
+ )
+ );
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)accumulate,
+ (ast_expression*)square
+ )
+ );
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)mid,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_DIV_F,
+ (ast_expression*)high,
+ (ast_expression*)fold_constgen_float(intrin->fold, 2.0f)
)
- );
- /* local *= x */
- vec_push(l1b->exprs,
- (ast_expression*)ast_binstore_new (
- parser_ctx(intrin->parser),
- INSTR_STORE_F,
- INSTR_MUL_F,
- (ast_expression*)local,
- (ast_expression*)arg1
+ )
+ );
+
+ /*
+ * <midltexp> = {
+ * low = mid;
+ * accumulate *= square;
+ * }
+ */
+ vec_push(midltexp->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)low,
+ (ast_expression*)mid
+ )
+ );
+ vec_push(midltexp->exprs,
+ (ast_expression*)ast_binstore_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ INSTR_MUL_F,
+ (ast_expression*)accumulate,
+ (ast_expression*)square
+ )
+ );
+
+ /*
+ * <midltexpelse> = {
+ * high = mid;
+ * accumulate *= (1.0 / square);
+ * }
+ */
+ vec_push(midltexpelse->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)high,
+ (ast_expression*)mid
+ )
+ );
+ vec_push(midltexpelse->exprs,
+ (ast_expression*)ast_binstore_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ INSTR_MUL_F,
+ (ast_expression*)accumulate,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_DIV_F,
+ (ast_expression*)intrin->fold->imm_float[1],
+ (ast_expression*)square
)
- );
+ )
+ );
- /* while (y > 0) */
- loop1 = ast_loop_new (
- parser_ctx(intrin->parser),
+ /*
+ * <callsqrt2> = sqrt(square)
+ */
+ vec_push(callsqrt2->params, (ast_expression*)square);
+
+ /*
+ * <whileblock> = {
+ * square = <callsqrt2>;
+ * if (mid < exp)
+ * <midltexp>;
+ * else
+ * <midltexpelse>;
+ *
+ * mid = (low + high) / 2;
+ * }
+ */
+ vec_push(whileblock->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)square,
+ (ast_expression*)callsqrt2
+ )
+ );
+ vec_push(whileblock->exprs,
+ (ast_expression*)ast_ifthen_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_LT,
+ (ast_expression*)mid,
+ (ast_expression*)exp
+ ),
+ (ast_expression*)midltexp,
+ (ast_expression*)midltexpelse
+ )
+ );
+ vec_push(whileblock->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)mid,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_DIV_F,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_ADD_F,
+ (ast_expression*)low,
+ (ast_expression*)high
+ ),
+ (ast_expression*)fold_constgen_float(intrin->fold, 2.0f)
+ )
+ )
+ );
+
+ /*
+ * <callabs> = fabs(mid - exp)
+ */
+ vec_push(callfabs->params,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_SUB_F,
+ (ast_expression*)mid,
+ (ast_expression*)exp
+ )
+ );
+
+ /*
+ * while (<callfabs> > epsilon)
+ * <whileblock>
+ */
+ vec_push(body->exprs,
+ (ast_expression*)ast_loop_new(
+ intrin_ctx(intrin),
+ /* init */
NULL,
- (ast_expression*)ast_binary_new (
- parser_ctx(intrin->parser),
+ /* pre condition */
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
INSTR_GT,
- (ast_expression*)arg2,
- (ast_expression*)intrin->fold->imm_float[0] /* 0 == 0.0f */
+ (ast_expression*)callfabs,
+ (ast_expression*)fold_constgen_float(intrin->fold, QC_POW_EPSILON)
),
+ /* pre not */
false,
+ /* post condition */
NULL,
+ /* post not */
false,
+ /* increment expression */
NULL,
- (ast_expression*)l1b
- );
-
- /* push the loop1 into the body for the function */
- vec_push(body->exprs, (ast_expression*)loop1);
-
- /* return local; */
- vec_push(body->exprs,
- (ast_expression*)ast_return_new (
- parser_ctx(intrin->parser),
- (ast_expression*)local
- )
- );
-
- /* push block and register intrin for codegen */
- vec_push(func->blocks, body);
-
- INTRIN_REG(func, value);
- }
-
+ /* code block */
+ (ast_expression*)whileblock
+ )
+ );
+
+ /* return midvalue */
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)accumulate
+ )
+ );
+
+ /* } */
+ vec_push(func->blocks, body);
+
+ intrin_reg(intrin, value, func);
return (ast_expression*)value;
}
static ast_expression *intrin_mod(intrin_t *intrin) {
/*
- * float mod(float x, float y) {
- * return x - y * floor(x / y);
+ * float mod(float a, float b) {
+ * float div = a / b;
+ * float sign = (div < 0.0f) ? -1 : 1;
+ * return a - b * sign * floor(sign * div);
* }
*/
- static ast_value *value = NULL;
-
- if (!value) {
- ast_call *call = ast_call_new (parser_ctx(intrin->parser), intrin_func(intrin, "floor"));
- ast_value *arg1 = ast_value_new(parser_ctx(intrin->parser), "x", TYPE_FLOAT);
- ast_value *arg2 = ast_value_new(parser_ctx(intrin->parser), "y", TYPE_FLOAT);
- ast_block *body = ast_block_new(parser_ctx(intrin->parser));
- ast_function *func = NULL;
-
- INTRIN_VAL(value, "mod", func, "<float>", TYPE_FLOAT);
-
- /* floor(x/y) */
- vec_push(call->params,
- (ast_expression*)ast_binary_new (
- parser_ctx(intrin->parser),
+ ast_value *value = NULL;
+ ast_call *call = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "floor", "mod"));
+ ast_value *a = ast_value_new(intrin_ctx(intrin), "a", TYPE_FLOAT);
+ ast_value *b = ast_value_new(intrin_ctx(intrin), "b", TYPE_FLOAT);
+ ast_value *div = ast_value_new(intrin_ctx(intrin), "div", TYPE_FLOAT);
+ ast_value *sign = ast_value_new(intrin_ctx(intrin), "sign", TYPE_FLOAT);
+ ast_block *body = ast_block_new(intrin_ctx(intrin));
+ ast_function *func = intrin_value(intrin, &value, "mod", TYPE_FLOAT);
+
+ vec_push(value->expression.params, a);
+ vec_push(value->expression.params, b);
+
+ vec_push(body->locals, div);
+ vec_push(body->locals, sign);
+
+ /* div = a / b; */
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)div,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
INSTR_DIV_F,
- (ast_expression*)arg1,
- (ast_expression*)arg2
+ (ast_expression*)a,
+ (ast_expression*)b
)
- );
-
- vec_push(body->exprs,
- (ast_expression*)ast_return_new(
- parser_ctx(intrin->parser),
+ )
+ );
+
+ /* sign = (div < 0.0f) ? -1 : 1; */
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)sign,
+ (ast_expression*)ast_ternary_new(
+ intrin_ctx(intrin),
(ast_expression*)ast_binary_new(
- parser_ctx(intrin->parser),
- INSTR_SUB_F,
- (ast_expression*)arg1,
+ intrin_ctx(intrin),
+ INSTR_LT,
+ (ast_expression*)div,
+ (ast_expression*)intrin->fold->imm_float[0]
+ ),
+ (ast_expression*)intrin->fold->imm_float[2],
+ (ast_expression*)intrin->fold->imm_float[1]
+ )
+ )
+ );
+
+ /* floor(sign * div) */
+ vec_push(call->params,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_MUL_F,
+ (ast_expression*)sign,
+ (ast_expression*)div
+ )
+ );
+
+ /* return a - b * sign * <call> */
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_SUB_F,
+ (ast_expression*)a,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_MUL_F,
+ (ast_expression*)b,
(ast_expression*)ast_binary_new(
- parser_ctx(intrin->parser),
+ intrin_ctx(intrin),
INSTR_MUL_F,
- (ast_expression*)arg2,
+ (ast_expression*)sign,
(ast_expression*)call
)
)
)
- );
-
- vec_push(value->expression.params, arg1); /* float x (for param) */
- vec_push(value->expression.params, arg2); /* float y (for param) */
+ )
+ );
- vec_push(func->blocks, body); /* {{{ body }}} */
-
- INTRIN_REG(func, value);
- }
+ vec_push(func->blocks, body); /* {{{ body }}} */
+ intrin_reg(intrin, value, func);
return (ast_expression*)value;
}
static ast_expression *intrin_exp(intrin_t *intrin) {
/*
* float exp(float x) {
- * return pow(QC_M_E, x);
+ * // mul 10 to round increments of 0.1f
+ * return floor((pow(QC_M_E, x) * 10) + 0.5) / 10;
* }
*/
- static ast_value *value = NULL;
-
- if (!value) {
- ast_call *call = ast_call_new (parser_ctx(intrin->parser), intrin_func(intrin, "pow"));
- ast_value *arg1 = ast_value_new(parser_ctx(intrin->parser), "x", TYPE_FLOAT);
- ast_block *body = ast_block_new(parser_ctx(intrin->parser));
- ast_function *func = NULL;
-
- INTRIN_VAL(value, "exp", func, "<float>", TYPE_FLOAT);
-
- /* push arguments for params to call */
- vec_push(call->params, (ast_expression*)fold_constgen_float(intrin->fold, QC_M_E));
- vec_push(call->params, (ast_expression*)arg1);
-
- /* return pow(QC_M_E, x) */
- vec_push(body->exprs,
- (ast_expression*)ast_return_new(
- parser_ctx(intrin->parser),
- (ast_expression*)call
+ ast_value *value = NULL;
+ ast_call *callpow = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "pow", "exp"));
+ ast_call *callfloor = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "floor", "exp"));
+ ast_value *arg1 = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+ ast_block *body = ast_block_new(intrin_ctx(intrin));
+ ast_function *func = intrin_value(intrin, &value, "exp", TYPE_FLOAT);
+
+ vec_push(value->expression.params, arg1);
+
+ vec_push(callpow->params, (ast_expression*)fold_constgen_float(intrin->fold, QC_M_E));
+ vec_push(callpow->params, (ast_expression*)arg1);
+ vec_push(callfloor->params,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_ADD_F,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_MUL_F,
+ (ast_expression*)callpow,
+ (ast_expression*)fold_constgen_float(intrin->fold, 10.0f)
+ ),
+ (ast_expression*)fold_constgen_float(intrin->fold, 0.5f)
+ )
+ );
+
+ /* return <callfloor> / 10.0f */
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_DIV_F,
+ (ast_expression*)callfloor,
+ (ast_expression*)fold_constgen_float(intrin->fold, 10.0f)
)
- );
-
- vec_push(value->expression.params, arg1); /* float x (for param) */
+ )
+ );
- vec_push(func->blocks, body); /* {{{ body }}} */
-
- INTRIN_REG(func, value);
- }
+ vec_push(func->blocks, body); /* {{{ body }}} */
+ intrin_reg(intrin, value, func);
return (ast_expression*)value;
}
* return (x != local);
* }
*/
- static ast_value *value = NULL;
-
- if (!value) {
- ast_value *arg1 = ast_value_new(parser_ctx(intrin->parser), "x", TYPE_FLOAT);
- ast_value *local = ast_value_new(parser_ctx(intrin->parser), "local", TYPE_FLOAT);
- ast_block *body = ast_block_new(parser_ctx(intrin->parser));
- ast_function *func = NULL;
-
- INTRIN_VAL(value, "isnan", func, "<float>", TYPE_FLOAT);
-
- vec_push(body->locals, local);
- vec_push(body->exprs,
- (ast_expression*)ast_store_new(
- parser_ctx(intrin->parser),
- INSTR_STORE_F,
- (ast_expression*)local,
- (ast_expression*)arg1
+ ast_value *value = NULL;
+ ast_value *arg1 = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+ ast_value *local = ast_value_new(intrin_ctx(intrin), "local", TYPE_FLOAT);
+ ast_block *body = ast_block_new(intrin_ctx(intrin));
+ ast_function *func = intrin_value(intrin, &value, "isnan", TYPE_FLOAT);
+
+ vec_push(body->locals, local);
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new(
+ intrin_ctx(intrin),
+ INSTR_STORE_F,
+ (ast_expression*)local,
+ (ast_expression*)arg1
+ )
+ );
+
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ INSTR_NE_F,
+ (ast_expression*)arg1,
+ (ast_expression*)local
)
- );
+ )
+ );
- vec_push(body->exprs,
- (ast_expression*)ast_return_new(
- parser_ctx(intrin->parser),
+ vec_push(value->expression.params, arg1);
+ vec_push(func->blocks, body);
+
+ intrin_reg(intrin, value, func);
+
+ return (ast_expression*)value;
+}
+
+static ast_expression *intrin_fabs(intrin_t *intrin) {
+ /*
+ * float fabs(float x) {
+ * return x < 0 ? -x : x;
+ * }
+ */
+ ast_value *value = NULL;
+ ast_value *arg1 = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+ ast_block *body = ast_block_new(intrin_ctx(intrin));
+ ast_function *func = intrin_value(intrin, &value, "fabs", TYPE_FLOAT);
+
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ intrin_ctx(intrin),
+ (ast_expression*)ast_ternary_new(
+ intrin_ctx(intrin),
(ast_expression*)ast_binary_new(
- parser_ctx(intrin->parser),
- INSTR_NE_F,
+ intrin_ctx(intrin),
+ INSTR_LE,
(ast_expression*)arg1,
- (ast_expression*)local
- )
+ (ast_expression*)intrin->fold->imm_float[0]
+ ),
+ (ast_expression*)ast_unary_new(
+ intrin_ctx(intrin),
+ VINSTR_NEG_F,
+ (ast_expression*)arg1
+ ),
+ (ast_expression*)arg1
)
- );
+ )
+ );
- vec_push(value->expression.params, arg1);
- vec_push(func->blocks, body);
+ vec_push(value->expression.params, arg1);
+ vec_push(func->blocks, body);
- INTRIN_REG(func, value);
- }
+ intrin_reg(intrin, value, func);
return (ast_expression*)value;
}
-#undef INTRIN_REG
-#undef INTRIN_VAL
/*
* TODO: make static (and handle ast_type_string) here for the builtin
}
static const intrin_func_t intrinsics[] = {
- {&intrin_exp, "__builtin_exp", "exp"},
- {&intrin_mod, "__builtin_mod", "mod"},
- {&intrin_pow, "__builtin_pow", "pow"},
- {&intrin_isnan, "__builtin_isnan", "isnan"},
- {&intrin_debug_typestring, "__builtin_debug_typestring", ""}
+ {&intrin_exp, "__builtin_exp", "exp", 1},
+ {&intrin_mod, "__builtin_mod", "mod", 2},
+ {&intrin_pow, "__builtin_pow", "pow", 2},
+ {&intrin_isnan, "__builtin_isnan", "isnan", 1},
+ {&intrin_fabs, "__builtin_fabs", "fabs", 1},
+ {&intrin_debug_typestring, "__builtin_debug_typestring", "", 0},
+ {&intrin_nullfunc, "#nullfunc", "", 0}
};
static void intrin_error(intrin_t *intrin, const char *fmt, ...) {
/* exposed */
intrin_t *intrin_init(parser_t *parser) {
intrin_t *intrin = (intrin_t*)mem_a(sizeof(intrin_t));
+ size_t i;
+
intrin->parser = parser;
intrin->fold = parser->fold;
intrin->intrinsics = NULL;
+ intrin->generated = NULL;
+
+ vec_append(intrin->intrinsics, GMQCC_ARRAY_COUNT(intrinsics), intrinsics);
- vec_append(intrin->intrinsics, sizeof(intrinsics)/sizeof(*intrinsics), intrinsics);
+ /* populate with null pointers for tracking generation */
+ for (i = 0; i < GMQCC_ARRAY_COUNT(intrinsics); i++)
+ vec_push(intrin->generated, NULL);
return intrin;
}
void intrin_cleanup(intrin_t *intrin) {
vec_free(intrin->intrinsics);
+ vec_free(intrin->generated);
mem_d(intrin);
}
-ast_expression *intrin_func(intrin_t *intrin, const char *name) {
- size_t i = 0;
- void *find;
+ast_expression *intrin_fold(intrin_t *intrin, ast_value *value, ast_expression **exprs) {
+ size_t i;
+ if (!value || !value->name)
+ return NULL;
+ for (i = 0; i < vec_size(intrin->intrinsics); i++)
+ if (!strcmp(value->name, intrin->intrinsics[i].name))
+ return (vec_size(exprs) != intrin->intrinsics[i].args)
+ ? NULL
+ : fold_intrin(intrin->fold, value->name + 10, exprs);
+ return NULL;
+}
+
+static GMQCC_INLINE ast_expression *intrin_func_try(intrin_t *intrin, size_t offset, const char *compare) {
+ size_t i;
+ for (i = 0; i < vec_size(intrin->intrinsics); i++) {
+ if (strcmp(*(char **)((char *)&intrin->intrinsics[i] + offset), compare))
+ continue;
+ if (intrin->generated[i])
+ return intrin->generated[i];
+ return intrin->generated[i] = intrin->intrinsics[i].intrin(intrin);
+ }
+ return NULL;
+}
+
+static ast_expression *intrin_func_self(intrin_t *intrin, const char *name, const char *from) {
+ size_t i;
+ ast_expression *find;
/* try current first */
- if ((find = (void*)parser_find_global(intrin->parser, name)) && ((ast_value*)find)->expression.vtype == TYPE_FUNCTION)
+ if ((find = parser_find_global(intrin->parser, name)) && ((ast_value*)find)->expression.vtype == TYPE_FUNCTION)
for (i = 0; i < vec_size(intrin->parser->functions); ++i)
if (((ast_value*)find)->name && !strcmp(intrin->parser->functions[i]->name, ((ast_value*)find)->name) && intrin->parser->functions[i]->builtin < 0)
- return (ast_expression*)find;
+ return find;
/* try name second */
- for (i = 0; i < vec_size(intrin->intrinsics); i++)
- if (!strcmp(intrin->intrinsics[i].name, name))
- return intrin->intrinsics[i].intrin(intrin);
+ if ((find = intrin_func_try(intrin, offsetof(intrin_func_t, name), name)))
+ return find;
/* try alias third */
- for (i = 0; i < vec_size(intrin->intrinsics); i++)
- if (!strcmp(intrin->intrinsics[i].alias, name))
- return intrin->intrinsics[i].intrin(intrin);
+ if ((find = intrin_func_try(intrin, offsetof(intrin_func_t, alias), name)))
+ return find;
- intrin_error(intrin, "need function: `%s` compiler depends on it", name);
- return NULL;
+ if (from)
+ intrin_error(intrin, "need function `%s', compiler depends on it for `__builtin_%s'", name, from);
+ else
+ intrin_error(intrin, "need function `%s', compiler depends on it", name);
+
+ return intrin_func(intrin, "#nullfunc");
+}
+
+ast_expression *intrin_func(intrin_t *intrin, const char *name) {
+ return intrin_func_self(intrin, name, NULL);
}
projects / xonotic / gmqcc.git / blobdiff