/* * Copyright © 2010 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include #include "brw_reg.h" #include "brw_defines.h" #include "main/compiler.h" #include "glsl/ir.h" #ifdef __cplusplus #include "brw_ir_allocator.h" #endif #pragma once #define MAX_SAMPLER_MESSAGE_SIZE 11 #define MAX_VGRF_SIZE 16 enum PACKED register_file { BAD_FILE, GRF, MRF, IMM, HW_REG, /* a struct brw_reg */ ATTR, UNIFORM, /* prog_data->params[reg] */ }; struct backend_reg { #ifdef __cplusplus bool is_zero() const; bool is_one() const; bool is_negative_one() const; bool is_null() const; bool is_accumulator() const; bool in_range(const backend_reg &r, unsigned n) const; #endif enum register_file file; /**< Register file: GRF, MRF, IMM. */ enum brw_reg_type type; /**< Register type: BRW_REGISTER_TYPE_* */ /** * Register number. * * For GRF, it's a virtual register number until register allocation. * * For MRF, it's the hardware register. */ uint16_t reg; /** * Offset within the virtual register. * * In the scalar backend, this is in units of a float per pixel for pre- * register allocation registers (i.e., one register in SIMD8 mode and two * registers in SIMD16 mode). * * For uniforms, this is in units of 1 float. */ uint16_t reg_offset; struct brw_reg fixed_hw_reg; bool negate; bool abs; }; struct cfg_t; struct bblock_t; #ifdef __cplusplus struct backend_instruction : public exec_node { bool is_3src() const; bool is_tex() const; bool is_math() const; bool is_control_flow() const; bool is_commutative() const; bool can_do_source_mods() const; bool can_do_saturate() const; bool can_do_cmod() const; bool reads_accumulator_implicitly() const; bool writes_accumulator_implicitly(struct brw_context *brw) const; void remove(bblock_t *block); void insert_after(bblock_t *block, backend_instruction *inst); void insert_before(bblock_t *block, backend_instruction *inst); void insert_before(bblock_t *block, exec_list *list); /** * True if the instruction has side effects other than writing to * its destination registers. You are expected not to reorder or * optimize these out unless you know what you are doing. */ bool has_side_effects() const; #else struct backend_instruction { struct exec_node link; #endif /** @{ * Annotation for the generated IR. One of the two can be set. */ const void *ir; const char *annotation; /** @} */ uint32_t offset; /**< spill/unspill offset or texture offset bitfield */ uint8_t mlen; /**< SEND message length */ int8_t base_mrf; /**< First MRF in the SEND message, if mlen is nonzero. */ uint8_t target; /**< MRT target. */ uint8_t regs_written; /**< Number of registers written by the instruction. */ enum opcode opcode; /* BRW_OPCODE_* or FS_OPCODE_* */ enum brw_conditional_mod conditional_mod; /**< BRW_CONDITIONAL_* */ enum brw_predicate predicate; bool predicate_inverse:1; bool writes_accumulator:1; /**< instruction implicitly writes accumulator */ bool force_writemask_all:1; bool no_dd_clear:1; bool no_dd_check:1; bool saturate:1; bool shadow_compare:1; bool header_present:1; /* Chooses which flag subregister (f0.0 or f0.1) is used for conditional * mod and predication. */ unsigned flag_subreg:1; }; #ifdef __cplusplus enum instruction_scheduler_mode { SCHEDULE_PRE, SCHEDULE_PRE_NON_LIFO, SCHEDULE_PRE_LIFO, SCHEDULE_POST, }; class backend_visitor : public ir_visitor { protected: backend_visitor(struct brw_context *brw, struct gl_shader_program *shader_prog, struct gl_program *prog, struct brw_stage_prog_data *stage_prog_data, gl_shader_stage stage); public: struct brw_context * const brw; struct gl_context * const ctx; struct brw_shader * const shader; struct gl_shader_program * const shader_prog; struct gl_program * const prog; struct brw_stage_prog_data * const stage_prog_data; /** ralloc context for temporary data used during compile */ void *mem_ctx; /** * List of either fs_inst or vec4_instruction (inheriting from * backend_instruction) */ exec_list instructions; cfg_t *cfg; gl_shader_stage stage; bool debug_enabled; const char *stage_name; const char *stage_abbrev; brw::simple_allocator alloc; virtual void dump_instruction(backend_instruction *inst) = 0; virtual void dump_instruction(backend_instruction *inst, FILE *file) = 0; virtual void dump_instructions(); virtual void dump_instructions(const char *name); void calculate_cfg(); void invalidate_cfg(); void assign_common_binding_table_offsets(uint32_t next_binding_table_offset); virtual void invalidate_live_intervals() = 0; }; uint32_t brw_texture_offset(int *offsets, unsigned num_components); #endif /* __cplusplus */ enum brw_reg_type brw_type_for_base_type(const struct glsl_type *type); enum brw_conditional_mod brw_conditional_for_comparison(unsigned int op); uint32_t brw_math_function(enum opcode op); const char *brw_instruction_name(enum opcode op); bool brw_saturate_immediate(enum brw_reg_type type, struct brw_reg *reg); bool brw_negate_immediate(enum brw_reg_type type, struct brw_reg *reg); bool brw_abs_immediate(enum brw_reg_type type, struct brw_reg *reg); #ifdef __cplusplus extern "C" { #endif bool brw_vs_precompile(struct gl_context *ctx, struct gl_shader_program *shader_prog, struct gl_program *prog); bool brw_gs_precompile(struct gl_context *ctx, struct gl_shader_program *shader_prog, struct gl_program *prog); bool brw_fs_precompile(struct gl_context *ctx, struct gl_shader_program *shader_prog, struct gl_program *prog); #ifdef __cplusplus } #endif