-class fs_visitor;
-
-class fs_reg : public backend_reg {
-public:
- DECLARE_RALLOC_CXX_OPERATORS(fs_reg)
-
- void init();
-
- fs_reg();
- explicit fs_reg(float f);
- explicit fs_reg(int32_t i);
- explicit fs_reg(uint32_t u);
- fs_reg(struct brw_reg fixed_hw_reg);
- fs_reg(enum register_file file, int reg);
- fs_reg(enum register_file file, int reg, enum brw_reg_type type);
- fs_reg(enum register_file file, int reg, enum brw_reg_type type, uint8_t width);
- fs_reg(fs_visitor *v, const struct glsl_type *type);
-
- bool equals(const fs_reg &r) const;
- bool is_valid_3src() const;
- bool is_contiguous() const;
-
- fs_reg &apply_stride(unsigned stride);
- /** Smear a channel of the reg to all channels. */
- fs_reg &set_smear(unsigned subreg);
-
- /**
- * Offset in bytes from the start of the register. Values up to a
- * backend_reg::reg_offset unit are valid.
- */
- int subreg_offset;
-
- fs_reg *reladdr;
-
- /**
- * The register width. This indicates how many hardware values are
- * represented by each virtual value. Valid values are 1, 8, or 16.
- * For immediate values, this is 1. Most of the rest of the time, it
- * will be equal to the dispatch width.
- */
- uint8_t width;
-
- /**
- * Returns the effective register width when used as a source in the
- * given instruction. Registers such as uniforms and immediates
- * effectively take on the width of the instruction in which they are
- * used.
- */
- uint8_t effective_width(const fs_visitor *v) const;
-
- /** Register region horizontal stride */
- uint8_t stride;
-};
-
-static inline fs_reg
-retype(fs_reg reg, enum brw_reg_type type)
-{
- reg.fixed_hw_reg.type = reg.type = type;
- return reg;
-}
-
-static inline fs_reg
-offset(fs_reg reg, unsigned delta)
-{
- assert(delta == 0 || (reg.file != HW_REG && reg.file != IMM));
- reg.reg_offset += delta;
- return reg;
-}
-
-static inline fs_reg
-byte_offset(fs_reg reg, unsigned delta)
-{
- assert(delta == 0 || (reg.file != HW_REG && reg.file != IMM));
- reg.subreg_offset += delta;
- return reg;
-}
-
-/**
- * Get either of the 8-component halves of a 16-component register.
- *
- * Note: this also works if \c reg represents a SIMD16 pair of registers.
- */
-static inline fs_reg
-half(fs_reg reg, unsigned idx)
-{
- assert(idx < 2);
- assert(idx == 0 || (reg.file != HW_REG && reg.file != IMM));
- assert(reg.width == 16);
- reg.width = 8;
- return byte_offset(reg, 8 * idx * reg.stride * type_sz(reg.type));
-}
-
-static const fs_reg reg_undef;
-
-class ip_record : public exec_node {
-public:
- DECLARE_RALLOC_CXX_OPERATORS(ip_record)
-
- ip_record(int ip)
- {
- this->ip = ip;
- }
-
- int ip;
-};
-
-class fs_inst : public backend_instruction {
- fs_inst &operator=(const fs_inst &);
-
-public:
- DECLARE_RALLOC_CXX_OPERATORS(fs_inst)
-
- void init(enum opcode opcode, const fs_reg &dst, fs_reg *src, int sources);
-
- fs_inst(enum opcode opcode = BRW_OPCODE_NOP, const fs_reg &dst = reg_undef);
- fs_inst(enum opcode opcode, const fs_reg &dst, const fs_reg &src0);
- fs_inst(enum opcode opcode, const fs_reg &dst, const fs_reg &src0,
- const fs_reg &src1);
- fs_inst(enum opcode opcode, const fs_reg &dst, const fs_reg &src0,
- const fs_reg &src1, const fs_reg &src2);
- fs_inst(enum opcode opcode, const fs_reg &dst, fs_reg src[], int sources);
- fs_inst(const fs_inst &that);
-
- void resize_sources(uint8_t num_sources);
-
- bool equals(fs_inst *inst) const;
- bool overwrites_reg(const fs_reg ®) const;
- bool is_send_from_grf() const;
- bool is_partial_write() const;
- int regs_read(fs_visitor *v, int arg) const;
- bool can_do_source_mods(struct brw_context *brw);
-
- bool reads_flag() const;
- bool writes_flag() const;
-
- fs_reg dst;
- fs_reg *src;
-
- uint8_t sources; /**< Number of fs_reg sources. */
-
- /* Chooses which flag subregister (f0.0 or f0.1) is used for conditional
- * mod and predication.
- */
- uint8_t flag_subreg;
-
- uint8_t regs_written; /**< Number of vgrfs written by a SEND message, or 1 */
- bool eot:1;
- bool header_present:1;
- bool shadow_compare:1;
- bool force_uncompressed:1;
- bool force_sechalf:1;
- bool pi_noperspective:1; /**< Pixel interpolator noperspective flag */
-};
-