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/**************************************************************************
*
* Copyright 2011-2012 Advanced Micro Devices, Inc.
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#ifndef LP_BLD_IR_COMMON_H
#define LP_BLD_IR_COMMON_H
#include "gallivm/lp_bld.h"
#include "gallivm/lp_bld_limits.h"
/* SM 4.0 says that subroutines can nest 32 deep and
* we need one more for our main function */
#define LP_MAX_NUM_FUNCS 33
enum lp_exec_mask_break_type {
LP_EXEC_MASK_BREAK_TYPE_LOOP,
LP_EXEC_MASK_BREAK_TYPE_SWITCH
};
struct lp_exec_mask {
struct lp_build_context *bld;
boolean has_mask;
boolean ret_in_main;
LLVMTypeRef int_vec_type;
LLVMValueRef exec_mask;
LLVMValueRef ret_mask;
LLVMValueRef cond_mask;
LLVMValueRef switch_mask; /* current switch exec mask */
LLVMValueRef cont_mask;
LLVMValueRef break_mask;
struct function_ctx {
int pc;
LLVMValueRef ret_mask;
LLVMValueRef cond_stack[LP_MAX_TGSI_NESTING];
int cond_stack_size;
/* keep track if break belongs to switch or loop */
enum lp_exec_mask_break_type break_type_stack[LP_MAX_TGSI_NESTING];
enum lp_exec_mask_break_type break_type;
struct {
LLVMValueRef switch_val;
LLVMValueRef switch_mask;
LLVMValueRef switch_mask_default;
boolean switch_in_default;
unsigned switch_pc;
} switch_stack[LP_MAX_TGSI_NESTING];
int switch_stack_size;
LLVMValueRef switch_val;
LLVMValueRef switch_mask_default; /* reverse of switch mask used for default */
boolean switch_in_default; /* if switch exec is currently in default */
unsigned switch_pc; /* when used points to default or endswitch-1 */
LLVMValueRef loop_limiter;
LLVMBasicBlockRef loop_block;
LLVMValueRef break_var;
struct {
LLVMBasicBlockRef loop_block;
LLVMValueRef cont_mask;
LLVMValueRef break_mask;
LLVMValueRef break_var;
} loop_stack[LP_MAX_TGSI_NESTING];
int loop_stack_size;
int bgnloop_stack_size;
} *function_stack;
int function_stack_size;
};
void lp_exec_mask_function_init(struct lp_exec_mask *mask, int function_idx);
void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context *bld);
void lp_exec_mask_fini(struct lp_exec_mask *mask);
void lp_exec_mask_store(struct lp_exec_mask *mask,
struct lp_build_context *bld_store,
LLVMValueRef val,
LLVMValueRef dst_ptr);
void lp_exec_mask_update(struct lp_exec_mask *mask);
void lp_exec_bgnloop_post_phi(struct lp_exec_mask *mask);
void lp_exec_bgnloop(struct lp_exec_mask *mask, bool load_mask);
void lp_exec_endloop(struct gallivm_state *gallivm,
struct lp_exec_mask *mask);
void lp_exec_mask_cond_push(struct lp_exec_mask *mask,
LLVMValueRef val);
void lp_exec_mask_cond_invert(struct lp_exec_mask *mask);
void lp_exec_mask_cond_pop(struct lp_exec_mask *mask);
void lp_exec_continue(struct lp_exec_mask *mask);
void lp_exec_break(struct lp_exec_mask *mask, int *pc, bool break_always);
#endif
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