-class dst_reg;
-
-unsigned
-swizzle_for_size(int size);
-
-class src_reg : public backend_reg
-{
-public:
- DECLARE_RALLOC_CXX_OPERATORS(src_reg)
-
- void init();
-
- src_reg(register_file file, int reg, const glsl_type *type);
- src_reg();
- src_reg(float f);
- src_reg(uint32_t u);
- src_reg(int32_t i);
- src_reg(struct brw_reg reg);
-
- bool equals(const src_reg &r) const;
-
- src_reg(class vec4_visitor *v, const struct glsl_type *type);
-
- explicit src_reg(dst_reg reg);
-
- GLuint swizzle; /**< BRW_SWIZZLE_XYZW macros from brw_reg.h. */
-
- src_reg *reladdr;
-};
-
-static inline src_reg
-retype(src_reg reg, enum brw_reg_type type)
-{
- reg.fixed_hw_reg.type = reg.type = type;
- return reg;
-}
-
-static inline src_reg
-offset(src_reg reg, unsigned delta)
-{
- assert(delta == 0 || (reg.file != HW_REG && reg.file != IMM));
- reg.reg_offset += delta;
- return reg;
-}
-
-/**
- * Reswizzle a given source register.
- * \sa brw_swizzle().
- */
-static inline src_reg
-swizzle(src_reg reg, unsigned swizzle)
-{
- assert(reg.file != HW_REG);
- reg.swizzle = BRW_SWIZZLE4(
- BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 0)),
- BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 1)),
- BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 2)),
- BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 3)));
- return reg;
-}
-
-static inline src_reg
-negate(src_reg reg)
-{
- assert(reg.file != HW_REG && reg.file != IMM);
- reg.negate = !reg.negate;
- return reg;
-}
-
-class dst_reg : public backend_reg
-{
-public:
- DECLARE_RALLOC_CXX_OPERATORS(dst_reg)
-
- void init();
-
- dst_reg();
- dst_reg(register_file file, int reg);
- dst_reg(register_file file, int reg, const glsl_type *type, int writemask);
- dst_reg(struct brw_reg reg);
- dst_reg(class vec4_visitor *v, const struct glsl_type *type);
-
- explicit dst_reg(src_reg reg);
-
- int writemask; /**< Bitfield of WRITEMASK_[XYZW] */
-
- src_reg *reladdr;
-};
-
-static inline dst_reg
-retype(dst_reg reg, enum brw_reg_type type)
-{
- reg.fixed_hw_reg.type = reg.type = type;
- return reg;
-}
-
-static inline dst_reg
-offset(dst_reg reg, unsigned delta)
-{
- assert(delta == 0 || (reg.file != HW_REG && reg.file != IMM));
- reg.reg_offset += delta;
- return reg;
-}
-
-static inline dst_reg
-writemask(dst_reg reg, unsigned mask)
-{
- assert(reg.file != HW_REG && reg.file != IMM);
- assert((reg.writemask & mask) != 0);
- reg.writemask &= mask;
- return reg;
-}
-
-class vec4_instruction : public backend_instruction {
-public:
- DECLARE_RALLOC_CXX_OPERATORS(vec4_instruction)
-
- vec4_instruction(vec4_visitor *v, enum opcode opcode,
- const dst_reg &dst = dst_reg(),
- const src_reg &src0 = src_reg(),
- const src_reg &src1 = src_reg(),
- const src_reg &src2 = src_reg());
-
- struct brw_reg get_dst(void);
- struct brw_reg get_src(const struct brw_vec4_prog_data *prog_data, int i);
-
- dst_reg dst;
- src_reg src[3];
-
- bool shadow_compare;
-
- enum brw_urb_write_flags urb_write_flags;
- bool header_present;
-
- bool is_send_from_grf();
- bool can_reswizzle_dst(int dst_writemask, int swizzle, int swizzle_mask);
- void reswizzle_dst(int dst_writemask, int swizzle);
- bool can_do_source_mods(struct brw_context *brw);
-
- bool reads_flag()
- {
- return predicate || opcode == VS_OPCODE_UNPACK_FLAGS_SIMD4X2;
- }
-
- bool writes_flag()
- {
- return conditional_mod && opcode != BRW_OPCODE_SEL;
- }
-};