* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
-#include "ast.h"
-
+#include <string.h>
+#include "parser.h"
/*
* Provides all the "intrinsics" / "builtins" for GMQCC. These can do
* is entered when -fintrin is used (causing all existing builtins to
* be ignored by the compiler and instead interface through here.
*/
-typedef struct {
- ast_expression (*intrin)(parser_t *);
- const char *name;
- const char *alias;
-} intrin_t;
+#define intrin_ctx(I) parser_ctx((I)->parser)
+static GMQCC_INLINE ast_function *intrin_value(intrin_t *intrin, ast_value **value, const char *name, qcint_t vtype) {
+ ast_function *func = NULL;
+ char buffer[1024];
+ char stype [1024];
-/*
- * Some helper macros for generating def, doing ast_value from func, with
- * assignment, and a nice aggregate builder for generating the intrinsic
- * table at the bottom of this file, and for registering functions and
- * globals with the parser (so that they can be codegen'ed)
- */
-#define INTRIN_IMP(NAME) \
- ast_expression intrin_##NAME (parser_t *parser)
+ util_snprintf(buffer, sizeof(buffer), "__builtin_%s", name);
+ util_snprintf(stype, sizeof(stype), "<%s>", type_name[vtype]);
-/*
- * For intrinsics that are not to take precedence over a builtin, leave
- * ALIAS as an empty string.
- */
-#define INTRIN_DEF(NAME, ALIAS) \
- { &intrin_##NAME, #NAME, ALIAS }
-
-
-#define INTRIN_VAL(NAME, FUNC, STYPE, VTYPE) \
- do { \
- (NAME) = ast_value_new ( \
- parser_ctx(parser), \
- "__builtin_" #NAME, \
- TYPE_FUNCTION \
- ); \
- (NAME)->expression.next = (ast_expression*)ast_value_new ( \
- parser_ctx(parser), \
- STYPE, \
- VTYPE \
- ); \
- (FUNC) = ast_function_new ( \
- parser_ctx(parser), \
- "__builtin_" #NAME, \
- (NAME) \
- ); \
- } while (0)
-
-#define INTRIN_REG(FUNC, VALUE) \
- do { \
- vec_push(parser->functions, (FUNC)); \
- vec_push(parser->globals, (ast_expression*)(VALUE)); \
- } while (0)
-
-
-typedef enum {
- QC_FP_NAN,
- QC_FP_INFINITE,
- QC_FP_ZERO,
- QC_FP_SUBNORMAL,
- QC_FP_NORMAL
-} intrin_fp_t;
-
-
-#if 0
-/*
- * Implementation of intrinsics. Each new intrinsic needs to be added
- * to the intrinsic table below.
- */
-INTRIN_IMP(isnan) {
- /*
- * float isnan(float x) {
- * float y;
- *
- * y = x;
- * return (x != y);
- */
+ *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;
+
+ return func;
}
-INTRIN_IMP(isinf) {
- /*
- * float isinf(float x) {
- * return (x != 0) && (x + x == x);
- * }
- */
+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);
}
-INTRIN_IMP(fpclassify) {
+#define QC_M_E 2.71828182845905f
+
+static ast_expression *intrin_pow (intrin_t *intrin) {
/*
- * float __builtin_fpclassify(float x) {
- * if (isnan(x)) {
- * return QC_FP_NAN;
- * }
- * if (isinf(x)) {
- * return QC_FP_INFINITE;
+ * float pow(float x, float y) {
+ * float local = 1.0f;
+ * while (y > 0) {
+ * while (!(y & 1)) {
+ * y >>= 2;
+ * x *= x;
* }
- * if (x == 0.0f) {
- * return QC_FP_ZERO;
- * }
- * return QC_FP_NORMAL;
+ * y--;
+ * local *= x;
+ * }
+ * return local;
* }
- */
-}
-#endif
+ */
+ 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 = intrin_value(intrin, &value, "pow", 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 */
+ )
+ );
+
+ /* 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)
+ )
+ );
+
+ /* x *= x */
+ vec_push(l2b->exprs,
+ (ast_expression*)ast_binstore_new (
+ parser_ctx(intrin->parser),
+ INSTR_STORE_F,
+ INSTR_MUL_F,
+ (ast_expression*)arg1,
+ (ast_expression*)arg1
+ )
+ );
+
+ /* 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 */
+ ),
+ true, /* ! not */
+ NULL,
+ false,
+ NULL,
+ (ast_expression*)l2b
+ );
+ /* push nested loop into loop expressions */
+ vec_push(l1b->exprs, (ast_expression*)loop2);
-INTRIN_IMP(exp) {
+ /* 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 */
+ )
+ );
+ /* 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
+ )
+ );
+
+ /* while (y > 0) */
+ loop1 = ast_loop_new (
+ parser_ctx(intrin->parser),
+ NULL,
+ (ast_expression*)ast_binary_new (
+ parser_ctx(intrin->parser),
+ INSTR_GT,
+ (ast_expression*)arg2,
+ (ast_expression*)intrin->fold->imm_float[0] /* 0 == 0.0f */
+ ),
+ false,
+ NULL,
+ false,
+ 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(intrin, value, func);
+ }
+
+ return (ast_expression*)value;
+}
+
+static ast_expression *intrin_mod(intrin_t *intrin) {
/*
- * float __builtin_exp(float x) {
- * return __builtin_pow(QC_M_E, x);
+ * float mod(float x, float y) {
+ * return x - y * floor(x / y);
* }
*/
static ast_value *value = NULL;
if (!value) {
- ast_call *call = ast_call_new (parser_ctx(parser), intrin_func(parser, "pow"));
- ast_value *arg1 = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
- ast_block *body = ast_block_new (parser_ctx(parser));
- ast_function *func = NULL;
+ 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 = intrin_value(intrin, &value, "mod", TYPE_FLOAT);
+
+ /* floor(x/y) */
+ vec_push(call->params,
+ (ast_expression*)ast_binary_new (
+ parser_ctx(intrin->parser),
+ INSTR_DIV_F,
+ (ast_expression*)arg1,
+ (ast_expression*)arg2
+ )
+ );
+
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ parser_ctx(intrin->parser),
+ (ast_expression*)ast_binary_new(
+ parser_ctx(intrin->parser),
+ INSTR_SUB_F,
+ (ast_expression*)arg1,
+ (ast_expression*)ast_binary_new(
+ parser_ctx(intrin->parser),
+ INSTR_MUL_F,
+ (ast_expression*)arg2,
+ (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_VAL("exp", func, "<float>", TYPE_FLOAT);
+ 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);
+ * }
+ */
+ 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 = intrin_value(intrin, &value, "exp", TYPE_FLOAT);
/* push arguments for params to call */
- vec_push(call->params, (ast_expression*)parser_const_float(parser, QC_M_E));
+ 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(parser),
+ parser_ctx(intrin->parser),
(ast_expression*)call
)
);
- vec_push(value->expressions.param, arg1); /* float x (for param) */
- vec_push(func ->blocks, body); /* {{{ body }}} */
+ vec_push(value->expression.params, arg1); /* float x (for param) */
+
+ vec_push(func->blocks, body); /* {{{ body }}} */
- INTRIN_REG(func, value);
+ intrin_reg(intrin, value, func);
}
return (ast_expression*)value;
}
-#if 0
-INTRIN_IMP(exp2) {
+static ast_expression *intrin_isnan(intrin_t *intrin) {
/*
- * float __builtin_exp2(float x) {
- * return __builin_pow(2, x);
+ * float isnan(float x) {
+ * float local;
+ * local = x;
+ *
+ * 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 = intrin_value(intrin, &value, "isnan", 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
+ )
+ );
+
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ parser_ctx(intrin->parser),
+ (ast_expression*)ast_binary_new(
+ parser_ctx(intrin->parser),
+ INSTR_NE_F,
+ (ast_expression*)arg1,
+ (ast_expression*)local
+ )
+ )
+ );
+
+ vec_push(value->expression.params, arg1);
+ vec_push(func->blocks, body);
+
+ intrin_reg(intrin, value, func);
+ }
+
+ return (ast_expression*)value;
}
-INTRIN_IMP(expm1) {
+static ast_expression *intrin_fabs(intrin_t *intrin) {
/*
- * float __builtin_expm1(float x) {
- * return __builtin_exp(x) - 1;
+ * float fabs(float x) {
+ * return x < 0 ? -x : x;
* }
- */
+ */
+ static ast_value *value = NULL;
+ if (!value) {
+ 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 = intrin_value(intrin, &value, "fabs", TYPE_FLOAT);
+
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ parser_ctx(intrin->parser),
+ (ast_expression*)ast_ternary_new(
+ parser_ctx(intrin->parser),
+ (ast_expression*)ast_binary_new(
+ parser_ctx(intrin->parser),
+ INSTR_LE,
+ (ast_expression*)arg1,
+ (ast_expression*)intrin->fold->imm_float[0]
+ ),
+ (ast_expression*)ast_binary_new(
+ parser_ctx(intrin->parser),
+ INSTR_SUB_F,
+ (ast_expression*)intrin->fold->imm_float[0],
+ (ast_expression*)arg1
+ ),
+ (ast_expression*)arg1
+ )
+ )
+ );
+
+ vec_push(value->expression.params, arg1);
+ vec_push(func->blocks, body);
+
+ intrin_reg(intrin, value, func);
+ }
+
+ return (ast_expression*)value;
+}
+
+/*
+ * TODO: make static (and handle ast_type_string) here for the builtin
+ * instead of in SYA parse close.
+ */
+ast_expression *intrin_debug_typestring(intrin_t *intrin) {
+ (void)intrin;
+ return (ast_expression*)0x1;
}
-#endif
-intrin_t intrin_intrinsics[] = {
- INTRIN_DEF(exp, "exp")
+static const intrin_func_t intrinsics[] = {
+ {&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}
};
+
+static void intrin_error(intrin_t *intrin, const char *fmt, ...) {
+ va_list ap;
+ va_start(ap, fmt);
+ vcompile_error(intrin->parser->lex->tok.ctx, fmt, ap);
+ va_end(ap);
+}
+
+/* exposed */
+intrin_t *intrin_init(parser_t *parser) {
+ intrin_t *intrin = (intrin_t*)mem_a(sizeof(intrin_t));
+ intrin->parser = parser;
+ intrin->fold = parser->fold;
+ intrin->intrinsics = NULL;
+
+ vec_append(intrin->intrinsics, sizeof(intrinsics)/sizeof(*intrinsics), intrinsics);
+
+ return intrin;
+}
+
+void intrin_cleanup(intrin_t *intrin) {
+ vec_free(intrin->intrinsics);
+ mem_d(intrin);
+}
+
+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)) {
+ if (intrin->intrinsics[i].args != vec_size(exprs))
+ return NULL;
+ /* +10 to skip the "__builtin_" substring in the string */
+ return fold_intrin(intrin->fold, value->name + 10, exprs);
+ }
+ }
+
+ return NULL;
+}
+
+ast_expression *intrin_func(intrin_t *intrin, const char *name) {
+ size_t i = 0;
+ void *find;
+
+ /* try current first */
+ if ((find = (void*)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;
+ /* 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);
+ /* 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);
+
+ intrin_error(intrin, "need function: `%s` compiler depends on it", name);
+ return NULL;
+}
projects / xonotic / gmqcc.git / blobdiff