#include "imports.h"
#include "slang_compile.h"
+#include "slang_label.h"
#include "mtypes.h"
/**
- * Intermediate Representation opcode
+ * Intermediate Representation opcodes
*/
typedef enum
{
IR_NOP = 0,
IR_SEQ, /* sequence (eval left, then right) */
+ IR_SCOPE, /* new variable scope (one child) */
+
IR_LABEL, /* target of a jump or cjump */
- IR_JUMP, /* unconditional jump */
- IR_CJUMP, /* conditional jump */
- IR_COND, /* conditional expression */
- IR_CALL, /* call subroutine */
+
+ IR_COND, /* conditional expression/predicate */
+
+ IR_IF, /* high-level IF/then/else */
+ /* Children[0] = conditional expression */
+ /* Children[1] = if-true part */
+ /* Children[2] = if-else part, or NULL */
+
+ IR_BEGIN_SUB, /* begin subroutine */
+ IR_END_SUB, /* end subroutine */
+ IR_RETURN, /* return from subroutine */
+ IR_CALL, /* call subroutine */
+
+ IR_FUNC, /* inlined function code */
+
+ IR_LOOP, /* high-level loop-begin / loop-end */
+ /* Children[0] = loop body */
+ /* Children[1] = loop tail code, or NULL */
+
+ IR_CONT, /* continue loop */
+ /* n->Parent = ptr to parent IR_LOOP Node */
+ IR_BREAK, /* break loop */
+
+ IR_BREAK_IF_TRUE,
+ IR_CONT_IF_TRUE,
+ /* Children[0] = the condition expression */
+
IR_MOVE,
+
+ /* vector ops: */
IR_ADD,
IR_SUB,
IR_MUL,
IR_DOT4,
IR_DOT3,
IR_CROSS, /* vec3 cross product */
+ IR_LRP,
+ IR_CLAMP,
IR_MIN,
IR_MAX,
- IR_SEQUAL, /* Set if not equal */
- IR_SNEQUAL, /* Set if equal */
- IR_SGE, /* Set if greater or equal */
- IR_SGT, /* Set if greater than */
+ IR_SEQUAL, /* Set if args are equal (vector) */
+ IR_SNEQUAL, /* Set if args are not equal (vector) */
+ IR_SGE, /* Set if greater or equal (vector) */
+ IR_SGT, /* Set if greater than (vector) */
+ IR_SLE, /* Set if less or equal (vector) */
+ IR_SLT, /* Set if less than (vector) */
IR_POW, /* x^y */
IR_EXP, /* e^x */
IR_EXP2, /* 2^x */
IR_FRAC,
IR_ABS, /* absolute value */
IR_NEG, /* negate */
+ IR_DDX, /* derivative w.r.t. X */
+ IR_DDY, /* derivative w.r.t. Y */
IR_SIN, /* sine */
IR_COS, /* cosine */
- IR_NOT, /* logical not */
+ IR_NOISE1, /* noise(x) */
+ IR_NOISE2, /* noise(x, y) */
+ IR_NOISE3, /* noise(x, y, z) */
+ IR_NOISE4, /* noise(x, y, z, w) */
+
+ IR_EQUAL, /* boolean equality */
+ IR_NOTEQUAL,/* boolean inequality */
+ IR_NOT, /* boolean not */
+
IR_VAR, /* variable reference */
IR_VAR_DECL,/* var declaration */
+
+ IR_ELEMENT, /* array element */
+ IR_FIELD, /* struct field */
+ IR_SWIZZLE, /* swizzled storage access */
+
IR_TEX, /* texture lookup */
IR_TEXB, /* texture lookup with LOD bias */
IR_TEXP, /* texture lookup with projection */
+
IR_FLOAT,
- IR_FIELD,
- IR_I_TO_F
+ IR_I_TO_F, /* int[4] to float[4] conversion */
+ IR_F_TO_I, /* float[4] to int[4] conversion */
+
+ IR_KILL /* fragment kill/discard */
} slang_ir_opcode;
/**
* Describes where data storage is allocated.
*/
-typedef struct
+struct _slang_ir_storage
{
enum register_file File; /**< PROGRAM_TEMPORARY, PROGRAM_INPUT, etc */
GLint Index; /**< -1 means unallocated */
GLint Size; /**< number of floats */
-} slang_ir_storage;
+ GLuint Swizzle;
+ GLint RefCount; /**< Used during IR tree delete */
+};
+
+typedef struct _slang_ir_storage slang_ir_storage;
/**
* Intermediate Representation (IR) tree node
+ * Basically a binary tree, but IR_LRP and IR_CLAMP have three children.
*/
typedef struct slang_ir_node_
{
slang_ir_opcode Opcode;
- struct slang_ir_node_ *Children[2];
- const char *Comment;
- const char *Target;
- GLuint Swizzle;
+ struct slang_ir_node_ *Children[3];
+ slang_ir_storage *Store; /**< location of result of this operation */
+ GLint InstLocation; /**< Location of instruction emitted for this node */
+
+ /** special fields depending on Opcode: */
+ const char *Field; /**< If Opcode == IR_FIELD */
+ int FieldOffset; /**< If Opcode == IR_FIELD */
GLuint Writemask; /**< If Opcode == IR_MOVE */
GLfloat Value[4]; /**< If Opcode == IR_FLOAT */
- slang_variable *Var;
- slang_ir_storage *Store;
+ slang_variable *Var; /**< If Opcode == IR_VAR or IR_VAR_DECL */
+ struct slang_ir_node_ *List; /**< For various linked lists */
+ struct slang_ir_node_ *Parent; /**< Pointer to logical parent (ie. loop) */
+ slang_label *Label; /**< Used for branches */
} slang_ir_node;
+
+/**
+ * Assembly and IR info
+ */
+typedef struct
+{
+ slang_ir_opcode IrOpcode;
+ const char *IrName;
+ gl_inst_opcode InstOpcode;
+ GLuint ResultSize, NumParams;
+} slang_ir_info;
+
+
+
+extern const slang_ir_info *
+_slang_ir_info(slang_ir_opcode opcode);
+
+
+extern void
+_slang_free_ir_tree(slang_ir_node *n);
+
+
+extern void
+_slang_print_ir_tree(const slang_ir_node *n, int indent);
+
+
#endif /* SLANG_IR_H */
projects / mesa.git / blobdiff