diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/Makefile.sources | 2 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_ir_common.c | 466 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_ir_common.h | 120 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_tgsi.h | 62 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 426 | ||||
| -rw-r--r-- | src/gallium/auxiliary/meson.build | 2 |
6 files changed, 599 insertions, 479 deletions
diff --git a/src/gallium/auxiliary/Makefile.sources b/src/gallium/auxiliary/Makefile.sources index 2cc7e8a3fc7..213bfe93f9b 100644 --- a/src/gallium/auxiliary/Makefile.sources +++ b/src/gallium/auxiliary/Makefile.sources @@ -413,6 +413,8 @@ GALLIVM_SOURCES := \ gallivm/lp_bld_init.h \ gallivm/lp_bld_intr.c \ gallivm/lp_bld_intr.h \ + gallivm/lp_bld_ir_common.c \ + gallivm/lp_bld_ir_common.h \ gallivm/lp_bld_limits.h \ gallivm/lp_bld_logic.c \ gallivm/lp_bld_logic.h \ diff --git a/src/gallium/auxiliary/gallivm/lp_bld_ir_common.c b/src/gallium/auxiliary/gallivm/lp_bld_ir_common.c new file mode 100644 index 00000000000..20af9d4d0c5 --- /dev/null +++ b/src/gallium/auxiliary/gallivm/lp_bld_ir_common.c @@ -0,0 +1,466 @@ +/************************************************************************** + * + * Copyright 2009 VMware, Inc. + * Copyright 2007-2008 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. + * + **************************************************************************/ + +#include "util/u_memory.h" +#include "lp_bld_type.h" +#include "lp_bld_init.h" +#include "lp_bld_flow.h" +#include "lp_bld_ir_common.h" +#include "lp_bld_logic.h" + +/* + * Return the context for the current function. + * (always 'main', if shader doesn't do any function calls) + */ +static inline struct function_ctx * +func_ctx(struct lp_exec_mask *mask) +{ + assert(mask->function_stack_size > 0); + assert(mask->function_stack_size <= LP_MAX_NUM_FUNCS); + return &mask->function_stack[mask->function_stack_size - 1]; +} + +/* + * Returns true if we're in a loop. + * It's global, meaning that it returns true even if there's + * no loop inside the current function, but we were inside + * a loop inside another function, from which this one was called. + */ +static inline boolean +mask_has_loop(struct lp_exec_mask *mask) +{ + int i; + for (i = mask->function_stack_size - 1; i >= 0; --i) { + const struct function_ctx *ctx = &mask->function_stack[i]; + if (ctx->loop_stack_size > 0) + return TRUE; + } + return FALSE; +} + +/* + * Returns true if we're inside a switch statement. + * It's global, meaning that it returns true even if there's + * no switch in the current function, but we were inside + * a switch inside another function, from which this one was called. + */ +static inline boolean +mask_has_switch(struct lp_exec_mask *mask) +{ + int i; + for (i = mask->function_stack_size - 1; i >= 0; --i) { + const struct function_ctx *ctx = &mask->function_stack[i]; + if (ctx->switch_stack_size > 0) + return TRUE; + } + return FALSE; +} + +/* + * Returns true if we're inside a conditional. + * It's global, meaning that it returns true even if there's + * no conditional in the current function, but we were inside + * a conditional inside another function, from which this one was called. + */ +static inline boolean +mask_has_cond(struct lp_exec_mask *mask) +{ + int i; + for (i = mask->function_stack_size - 1; i >= 0; --i) { + const struct function_ctx *ctx = &mask->function_stack[i]; + if (ctx->cond_stack_size > 0) + return TRUE; + } + return FALSE; +} + +void lp_exec_mask_update(struct lp_exec_mask *mask) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + boolean has_loop_mask = mask_has_loop(mask); + boolean has_cond_mask = mask_has_cond(mask); + boolean has_switch_mask = mask_has_switch(mask); + boolean has_ret_mask = mask->function_stack_size > 1 || + mask->ret_in_main; + + if (has_loop_mask) { + /*for loops we need to update the entire mask at runtime */ + LLVMValueRef tmp; + assert(mask->break_mask); + tmp = LLVMBuildAnd(builder, + mask->cont_mask, + mask->break_mask, + "maskcb"); + mask->exec_mask = LLVMBuildAnd(builder, + mask->cond_mask, + tmp, + "maskfull"); + } else + mask->exec_mask = mask->cond_mask; + + if (has_switch_mask) { + mask->exec_mask = LLVMBuildAnd(builder, + mask->exec_mask, + mask->switch_mask, + "switchmask"); + } + + if (has_ret_mask) { + mask->exec_mask = LLVMBuildAnd(builder, + mask->exec_mask, + mask->ret_mask, + "callmask"); + } + + mask->has_mask = (has_cond_mask || + has_loop_mask || + has_switch_mask || + has_ret_mask); +} + +/* + * Initialize a function context at the specified index. + */ +void +lp_exec_mask_function_init(struct lp_exec_mask *mask, int function_idx) +{ + LLVMTypeRef int_type = LLVMInt32TypeInContext(mask->bld->gallivm->context); + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = &mask->function_stack[function_idx]; + + ctx->cond_stack_size = 0; + ctx->loop_stack_size = 0; + ctx->bgnloop_stack_size = 0; + ctx->switch_stack_size = 0; + + if (function_idx == 0) { + ctx->ret_mask = mask->ret_mask; + } + + ctx->loop_limiter = lp_build_alloca(mask->bld->gallivm, + int_type, "looplimiter"); + LLVMBuildStore( + builder, + LLVMConstInt(int_type, LP_MAX_TGSI_LOOP_ITERATIONS, false), + ctx->loop_limiter); +} + +void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context *bld) +{ + mask->bld = bld; + mask->has_mask = FALSE; + mask->ret_in_main = FALSE; + /* For the main function */ + mask->function_stack_size = 1; + + mask->int_vec_type = lp_build_int_vec_type(bld->gallivm, mask->bld->type); + mask->exec_mask = mask->ret_mask = mask->break_mask = mask->cont_mask = + mask->cond_mask = mask->switch_mask = + LLVMConstAllOnes(mask->int_vec_type); + + mask->function_stack = CALLOC(LP_MAX_NUM_FUNCS, + sizeof(mask->function_stack[0])); + lp_exec_mask_function_init(mask, 0); +} + +void +lp_exec_mask_fini(struct lp_exec_mask *mask) +{ + FREE(mask->function_stack); +} + +/* stores val into an address pointed to by dst_ptr. + * mask->exec_mask is used to figure out which bits of val + * should be stored into the address + * (0 means don't store this bit, 1 means do store). + */ +void lp_exec_mask_store(struct lp_exec_mask *mask, + struct lp_build_context *bld_store, + LLVMValueRef val, + LLVMValueRef dst_ptr) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + LLVMValueRef exec_mask = mask->has_mask ? mask->exec_mask : NULL; + + assert(lp_check_value(bld_store->type, val)); + assert(LLVMGetTypeKind(LLVMTypeOf(dst_ptr)) == LLVMPointerTypeKind); + assert(LLVMGetElementType(LLVMTypeOf(dst_ptr)) == LLVMTypeOf(val) || + LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(dst_ptr))) == LLVMArrayTypeKind); + + if (exec_mask) { + LLVMValueRef res, dst; + + dst = LLVMBuildLoad(builder, dst_ptr, ""); + res = lp_build_select(bld_store, exec_mask, val, dst); + LLVMBuildStore(builder, res, dst_ptr); + } else + LLVMBuildStore(builder, val, dst_ptr); +} + +void lp_exec_bgnloop_post_phi(struct lp_exec_mask *mask) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = func_ctx(mask); + + if (ctx->loop_stack_size != ctx->bgnloop_stack_size) { + mask->break_mask = LLVMBuildLoad(builder, ctx->break_var, ""); + lp_exec_mask_update(mask); + ctx->bgnloop_stack_size = ctx->loop_stack_size; + } +} + +void lp_exec_bgnloop(struct lp_exec_mask *mask, bool load) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = func_ctx(mask); + + if (ctx->loop_stack_size >= LP_MAX_TGSI_NESTING) { + ++ctx->loop_stack_size; + return; + } + + ctx->break_type_stack[ctx->loop_stack_size + ctx->switch_stack_size] = + ctx->break_type; + ctx->break_type = LP_EXEC_MASK_BREAK_TYPE_LOOP; + + ctx->loop_stack[ctx->loop_stack_size].loop_block = ctx->loop_block; + ctx->loop_stack[ctx->loop_stack_size].cont_mask = mask->cont_mask; + ctx->loop_stack[ctx->loop_stack_size].break_mask = mask->break_mask; + ctx->loop_stack[ctx->loop_stack_size].break_var = ctx->break_var; + ++ctx->loop_stack_size; + + ctx->break_var = lp_build_alloca(mask->bld->gallivm, mask->int_vec_type, ""); + LLVMBuildStore(builder, mask->break_mask, ctx->break_var); + + ctx->loop_block = lp_build_insert_new_block(mask->bld->gallivm, "bgnloop"); + + LLVMBuildBr(builder, ctx->loop_block); + LLVMPositionBuilderAtEnd(builder, ctx->loop_block); + + if (load) { + lp_exec_bgnloop_post_phi(mask); + } +} + +void lp_exec_endloop(struct gallivm_state *gallivm, + struct lp_exec_mask *mask) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = func_ctx(mask); + LLVMBasicBlockRef endloop; + LLVMTypeRef int_type = LLVMInt32TypeInContext(mask->bld->gallivm->context); + LLVMTypeRef reg_type = LLVMIntTypeInContext(gallivm->context, + mask->bld->type.width * + mask->bld->type.length); + LLVMValueRef i1cond, i2cond, icond, limiter; + + assert(mask->break_mask); + + assert(ctx->loop_stack_size); + if (ctx->loop_stack_size > LP_MAX_TGSI_NESTING) { + --ctx->loop_stack_size; + --ctx->bgnloop_stack_size; + return; + } + + /* + * Restore the cont_mask, but don't pop + */ + mask->cont_mask = ctx->loop_stack[ctx->loop_stack_size - 1].cont_mask; + lp_exec_mask_update(mask); + + /* + * Unlike the continue mask, the break_mask must be preserved across loop + * iterations + */ + LLVMBuildStore(builder, mask->break_mask, ctx->break_var); + + /* Decrement the loop limiter */ + limiter = LLVMBuildLoad(builder, ctx->loop_limiter, ""); + + limiter = LLVMBuildSub( + builder, + limiter, + LLVMConstInt(int_type, 1, false), + ""); + + LLVMBuildStore(builder, limiter, ctx->loop_limiter); + + /* i1cond = (mask != 0) */ + i1cond = LLVMBuildICmp( + builder, + LLVMIntNE, + LLVMBuildBitCast(builder, mask->exec_mask, reg_type, ""), + LLVMConstNull(reg_type), "i1cond"); + + /* i2cond = (looplimiter > 0) */ + i2cond = LLVMBuildICmp( + builder, + LLVMIntSGT, + limiter, + LLVMConstNull(int_type), "i2cond"); + + /* if( i1cond && i2cond ) */ + icond = LLVMBuildAnd(builder, i1cond, i2cond, ""); + + endloop = lp_build_insert_new_block(mask->bld->gallivm, "endloop"); + + LLVMBuildCondBr(builder, + icond, ctx->loop_block, endloop); + + LLVMPositionBuilderAtEnd(builder, endloop); + + assert(ctx->loop_stack_size); + --ctx->loop_stack_size; + --ctx->bgnloop_stack_size; + mask->cont_mask = ctx->loop_stack[ctx->loop_stack_size].cont_mask; + mask->break_mask = ctx->loop_stack[ctx->loop_stack_size].break_mask; + ctx->loop_block = ctx->loop_stack[ctx->loop_stack_size].loop_block; + ctx->break_var = ctx->loop_stack[ctx->loop_stack_size].break_var; + ctx->break_type = ctx->break_type_stack[ctx->loop_stack_size + + ctx->switch_stack_size]; + + lp_exec_mask_update(mask); +} + +void lp_exec_mask_cond_push(struct lp_exec_mask *mask, + LLVMValueRef val) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = func_ctx(mask); + + if (ctx->cond_stack_size >= LP_MAX_TGSI_NESTING) { + ctx->cond_stack_size++; + return; + } + if (ctx->cond_stack_size == 0 && mask->function_stack_size == 1) { + assert(mask->cond_mask == LLVMConstAllOnes(mask->int_vec_type)); + } + ctx->cond_stack[ctx->cond_stack_size++] = mask->cond_mask; + assert(LLVMTypeOf(val) == mask->int_vec_type); + mask->cond_mask = LLVMBuildAnd(builder, + mask->cond_mask, + val, + ""); + lp_exec_mask_update(mask); +} + +void lp_exec_mask_cond_invert(struct lp_exec_mask *mask) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = func_ctx(mask); + LLVMValueRef prev_mask; + LLVMValueRef inv_mask; + + assert(ctx->cond_stack_size); + if (ctx->cond_stack_size >= LP_MAX_TGSI_NESTING) + return; + prev_mask = ctx->cond_stack[ctx->cond_stack_size - 1]; + if (ctx->cond_stack_size == 1 && mask->function_stack_size == 1) { + assert(prev_mask == LLVMConstAllOnes(mask->int_vec_type)); + } + + inv_mask = LLVMBuildNot(builder, mask->cond_mask, ""); + + mask->cond_mask = LLVMBuildAnd(builder, + inv_mask, + prev_mask, ""); + lp_exec_mask_update(mask); +} + +void lp_exec_mask_cond_pop(struct lp_exec_mask *mask) +{ + struct function_ctx *ctx = func_ctx(mask); + assert(ctx->cond_stack_size); + --ctx->cond_stack_size; + if (ctx->cond_stack_size >= LP_MAX_TGSI_NESTING) + return; + mask->cond_mask = ctx->cond_stack[ctx->cond_stack_size]; + lp_exec_mask_update(mask); +} + + +void lp_exec_continue(struct lp_exec_mask *mask) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + LLVMValueRef exec_mask = LLVMBuildNot(builder, + mask->exec_mask, + ""); + + mask->cont_mask = LLVMBuildAnd(builder, + mask->cont_mask, + exec_mask, ""); + + lp_exec_mask_update(mask); +} + +void lp_exec_break(struct lp_exec_mask *mask, int *pc, + bool break_always) +{ + LLVMBuilderRef builder = mask->bld->gallivm->builder; + struct function_ctx *ctx = func_ctx(mask); + + if (ctx->break_type == LP_EXEC_MASK_BREAK_TYPE_LOOP) { + LLVMValueRef exec_mask = LLVMBuildNot(builder, + mask->exec_mask, + "break"); + + mask->break_mask = LLVMBuildAnd(builder, + mask->break_mask, + exec_mask, "break_full"); + } + else { + if (ctx->switch_in_default) { + /* + * stop default execution but only if this is an unconditional switch. + * (The condition here is not perfect since dead code after break is + * allowed but should be sufficient since false negatives are just + * unoptimized - so we don't have to pre-evaluate that). + */ + if(break_always && ctx->switch_pc) { + if (pc) + *pc = ctx->switch_pc; + return; + } + } + + if (break_always) { + mask->switch_mask = LLVMConstNull(mask->bld->int_vec_type); + } + else { + LLVMValueRef exec_mask = LLVMBuildNot(builder, + mask->exec_mask, + "break"); + mask->switch_mask = LLVMBuildAnd(builder, + mask->switch_mask, + exec_mask, "break_switch"); + } + } + + lp_exec_mask_update(mask); +} diff --git a/src/gallium/auxiliary/gallivm/lp_bld_ir_common.h b/src/gallium/auxiliary/gallivm/lp_bld_ir_common.h new file mode 100644 index 00000000000..34c09193936 --- /dev/null +++ b/src/gallium/auxiliary/gallivm/lp_bld_ir_common.h @@ -0,0 +1,120 @@ +/************************************************************************** + * + * 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 diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h b/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h index 4bd0c0cf2af..6a67d90f8a5 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h +++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h @@ -41,6 +41,7 @@ #include "gallivm/lp_bld_tgsi_action.h" #include "gallivm/lp_bld_limits.h" #include "gallivm/lp_bld_sample.h" +#include "gallivm/lp_bld_ir_common.h" #include "lp_bld_type.h" #include "pipe/p_compiler.h" #include "pipe/p_state.h" @@ -272,67 +273,6 @@ lp_build_tgsi_aos(struct gallivm_state *gallivm, const struct tgsi_shader_info *info); -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; - - } *function_stack; - int function_stack_size; -}; - struct lp_build_tgsi_inst_list { struct tgsi_full_instruction *instructions; diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c index 5a67f834c90..ca70a96302e 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c @@ -69,10 +69,6 @@ #include "lp_bld_sample.h" #include "lp_bld_struct.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 - #define DUMP_GS_EMITS 0 /* @@ -105,10 +101,6 @@ emit_dump_reg(struct gallivm_state *gallivm, lp_build_print_value(gallivm, buf, value); } -/* - * Return the context for the current function. - * (always 'main', if shader doesn't do any function calls) - */ static inline struct function_ctx * func_ctx(struct lp_exec_mask *mask) { @@ -118,24 +110,6 @@ func_ctx(struct lp_exec_mask *mask) } /* - * Returns true if we're in a loop. - * It's global, meaning that it returns true even if there's - * no loop inside the current function, but we were inside - * a loop inside another function, from which this one was called. - */ -static inline boolean -mask_has_loop(struct lp_exec_mask *mask) -{ - int i; - for (i = mask->function_stack_size - 1; i >= 0; --i) { - const struct function_ctx *ctx = &mask->function_stack[i]; - if (ctx->loop_stack_size > 0) - return TRUE; - } - return FALSE; -} - -/* * combine the execution mask if there is one with the current mask. */ static LLVMValueRef @@ -154,370 +128,14 @@ mask_vec(struct lp_build_tgsi_context *bld_base) exec_mask->exec_mask, ""); } -/* - * Returns true if we're inside a switch statement. - * It's global, meaning that it returns true even if there's - * no switch in the current function, but we were inside - * a switch inside another function, from which this one was called. - */ -static inline boolean -mask_has_switch(struct lp_exec_mask *mask) -{ - int i; - for (i = mask->function_stack_size - 1; i >= 0; --i) { - const struct function_ctx *ctx = &mask->function_stack[i]; - if (ctx->switch_stack_size > 0) - return TRUE; - } - return FALSE; -} - -/* - * Returns true if we're inside a conditional. - * It's global, meaning that it returns true even if there's - * no conditional in the current function, but we were inside - * a conditional inside another function, from which this one was called. - */ -static inline boolean -mask_has_cond(struct lp_exec_mask *mask) -{ - int i; - for (i = mask->function_stack_size - 1; i >= 0; --i) { - const struct function_ctx *ctx = &mask->function_stack[i]; - if (ctx->cond_stack_size > 0) - return TRUE; - } - return FALSE; -} - - -/* - * Initialize a function context at the specified index. - */ -static void -lp_exec_mask_function_init(struct lp_exec_mask *mask, int function_idx) -{ - LLVMTypeRef int_type = LLVMInt32TypeInContext(mask->bld->gallivm->context); - LLVMBuilderRef builder = mask->bld->gallivm->builder; - struct function_ctx *ctx = &mask->function_stack[function_idx]; - - ctx->cond_stack_size = 0; - ctx->loop_stack_size = 0; - ctx->switch_stack_size = 0; - - if (function_idx == 0) { - ctx->ret_mask = mask->ret_mask; - } - - ctx->loop_limiter = lp_build_alloca(mask->bld->gallivm, - int_type, "looplimiter"); - LLVMBuildStore( - builder, - LLVMConstInt(int_type, LP_MAX_TGSI_LOOP_ITERATIONS, false), - ctx->loop_limiter); -} - -static void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context *bld) -{ - mask->bld = bld; - mask->has_mask = FALSE; - mask->ret_in_main = FALSE; - /* For the main function */ - mask->function_stack_size = 1; - - mask->int_vec_type = lp_build_int_vec_type(bld->gallivm, mask->bld->type); - mask->exec_mask = mask->ret_mask = mask->break_mask = mask->cont_mask = - mask->cond_mask = mask->switch_mask = - LLVMConstAllOnes(mask->int_vec_type); - - mask->function_stack = CALLOC(LP_MAX_NUM_FUNCS, - sizeof(mask->function_stack[0])); - lp_exec_mask_function_init(mask, 0); -} - -static void -lp_exec_mask_fini(struct lp_exec_mask *mask) -{ - FREE(mask->function_stack); -} - -static void lp_exec_mask_update(struct lp_exec_mask *mask) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - boolean has_loop_mask = mask_has_loop(mask); - boolean has_cond_mask = mask_has_cond(mask); - boolean has_switch_mask = mask_has_switch(mask); - boolean has_ret_mask = mask->function_stack_size > 1 || - mask->ret_in_main; - - if (has_loop_mask) { - /*for loops we need to update the entire mask at runtime */ - LLVMValueRef tmp; - assert(mask->break_mask); - tmp = LLVMBuildAnd(builder, - mask->cont_mask, - mask->break_mask, - "maskcb"); - mask->exec_mask = LLVMBuildAnd(builder, - mask->cond_mask, - tmp, - "maskfull"); - } else - mask->exec_mask = mask->cond_mask; - - if (has_switch_mask) { - mask->exec_mask = LLVMBuildAnd(builder, - mask->exec_mask, - mask->switch_mask, - "switchmask"); - } - - if (has_ret_mask) { - mask->exec_mask = LLVMBuildAnd(builder, - mask->exec_mask, - mask->ret_mask, - "callmask"); - } - - mask->has_mask = (has_cond_mask || - has_loop_mask || - has_switch_mask || - has_ret_mask); -} - -static void lp_exec_mask_cond_push(struct lp_exec_mask *mask, - LLVMValueRef val) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - struct function_ctx *ctx = func_ctx(mask); - - if (ctx->cond_stack_size >= LP_MAX_TGSI_NESTING) { - ctx->cond_stack_size++; - return; - } - if (ctx->cond_stack_size == 0 && mask->function_stack_size == 1) { - assert(mask->cond_mask == LLVMConstAllOnes(mask->int_vec_type)); - } - ctx->cond_stack[ctx->cond_stack_size++] = mask->cond_mask; - assert(LLVMTypeOf(val) == mask->int_vec_type); - mask->cond_mask = LLVMBuildAnd(builder, - mask->cond_mask, - val, - ""); - lp_exec_mask_update(mask); -} - -static void lp_exec_mask_cond_invert(struct lp_exec_mask *mask) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - struct function_ctx *ctx = func_ctx(mask); - LLVMValueRef prev_mask; - LLVMValueRef inv_mask; - - assert(ctx->cond_stack_size); - if (ctx->cond_stack_size >= LP_MAX_TGSI_NESTING) - return; - prev_mask = ctx->cond_stack[ctx->cond_stack_size - 1]; - if (ctx->cond_stack_size == 1 && mask->function_stack_size == 1) { - assert(prev_mask == LLVMConstAllOnes(mask->int_vec_type)); - } - - inv_mask = LLVMBuildNot(builder, mask->cond_mask, ""); - - mask->cond_mask = LLVMBuildAnd(builder, - inv_mask, - prev_mask, ""); - lp_exec_mask_update(mask); -} - -static void lp_exec_mask_cond_pop(struct lp_exec_mask *mask) -{ - struct function_ctx *ctx = func_ctx(mask); - assert(ctx->cond_stack_size); - --ctx->cond_stack_size; - if (ctx->cond_stack_size >= LP_MAX_TGSI_NESTING) - return; - mask->cond_mask = ctx->cond_stack[ctx->cond_stack_size]; - lp_exec_mask_update(mask); -} - -static void lp_exec_bgnloop(struct lp_exec_mask *mask) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - struct function_ctx *ctx = func_ctx(mask); - - if (ctx->loop_stack_size >= LP_MAX_TGSI_NESTING) { - ++ctx->loop_stack_size; - return; - } - - ctx->break_type_stack[ctx->loop_stack_size + ctx->switch_stack_size] = - ctx->break_type; - ctx->break_type = LP_EXEC_MASK_BREAK_TYPE_LOOP; - - ctx->loop_stack[ctx->loop_stack_size].loop_block = ctx->loop_block; - ctx->loop_stack[ctx->loop_stack_size].cont_mask = mask->cont_mask; - ctx->loop_stack[ctx->loop_stack_size].break_mask = mask->break_mask; - ctx->loop_stack[ctx->loop_stack_size].break_var = ctx->break_var; - ++ctx->loop_stack_size; - - ctx->break_var = lp_build_alloca(mask->bld->gallivm, mask->int_vec_type, ""); - LLVMBuildStore(builder, mask->break_mask, ctx->break_var); - - ctx->loop_block = lp_build_insert_new_block(mask->bld->gallivm, "bgnloop"); - - LLVMBuildBr(builder, ctx->loop_block); - LLVMPositionBuilderAtEnd(builder, ctx->loop_block); - - mask->break_mask = LLVMBuildLoad(builder, ctx->break_var, ""); - - lp_exec_mask_update(mask); -} - -static void lp_exec_break(struct lp_exec_mask *mask, +static void lp_exec_tgsi_break(struct lp_exec_mask *mask, struct lp_build_tgsi_context * bld_base) { - LLVMBuilderRef builder = mask->bld->gallivm->builder; - struct function_ctx *ctx = func_ctx(mask); - - if (ctx->break_type == LP_EXEC_MASK_BREAK_TYPE_LOOP) { - LLVMValueRef exec_mask = LLVMBuildNot(builder, - mask->exec_mask, - "break"); - - mask->break_mask = LLVMBuildAnd(builder, - mask->break_mask, - exec_mask, "break_full"); - } - else { - enum tgsi_opcode opcode = - bld_base->instructions[bld_base->pc + 1].Instruction.Opcode; - boolean break_always = (opcode == TGSI_OPCODE_ENDSWITCH || - opcode == TGSI_OPCODE_CASE); - - - if (ctx->switch_in_default) { - /* - * stop default execution but only if this is an unconditional switch. - * (The condition here is not perfect since dead code after break is - * allowed but should be sufficient since false negatives are just - * unoptimized - so we don't have to pre-evaluate that). - */ - if(break_always && ctx->switch_pc) { - bld_base->pc = ctx->switch_pc; - return; - } - } - - if (break_always) { - mask->switch_mask = LLVMConstNull(mask->bld->int_vec_type); - } - else { - LLVMValueRef exec_mask = LLVMBuildNot(builder, - mask->exec_mask, - "break"); - mask->switch_mask = LLVMBuildAnd(builder, - mask->switch_mask, - exec_mask, "break_switch"); - } - } - - lp_exec_mask_update(mask); -} - -static void lp_exec_continue(struct lp_exec_mask *mask) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - LLVMValueRef exec_mask = LLVMBuildNot(builder, - mask->exec_mask, - ""); - - mask->cont_mask = LLVMBuildAnd(builder, - mask->cont_mask, - exec_mask, ""); - - lp_exec_mask_update(mask); -} - - -static void lp_exec_endloop(struct gallivm_state *gallivm, - struct lp_exec_mask *mask) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - struct function_ctx *ctx = func_ctx(mask); - LLVMBasicBlockRef endloop; - LLVMTypeRef int_type = LLVMInt32TypeInContext(mask->bld->gallivm->context); - LLVMTypeRef reg_type = LLVMIntTypeInContext(gallivm->context, - mask->bld->type.width * - mask->bld->type.length); - LLVMValueRef i1cond, i2cond, icond, limiter; - - assert(mask->break_mask); - - - assert(ctx->loop_stack_size); - if (ctx->loop_stack_size > LP_MAX_TGSI_NESTING) { - --ctx->loop_stack_size; - return; - } - - /* - * Restore the cont_mask, but don't pop - */ - mask->cont_mask = ctx->loop_stack[ctx->loop_stack_size - 1].cont_mask; - lp_exec_mask_update(mask); - - /* - * Unlike the continue mask, the break_mask must be preserved across loop - * iterations - */ - LLVMBuildStore(builder, mask->break_mask, ctx->break_var); - - /* Decrement the loop limiter */ - limiter = LLVMBuildLoad(builder, ctx->loop_limiter, ""); - - limiter = LLVMBuildSub( - builder, - limiter, - LLVMConstInt(int_type, 1, false), - ""); - - LLVMBuildStore(builder, limiter, ctx->loop_limiter); - - /* i1cond = (mask != 0) */ - i1cond = LLVMBuildICmp( - builder, - LLVMIntNE, - LLVMBuildBitCast(builder, mask->exec_mask, reg_type, ""), - LLVMConstNull(reg_type), "i1cond"); - - /* i2cond = (looplimiter > 0) */ - i2cond = LLVMBuildICmp( - builder, - LLVMIntSGT, - limiter, - LLVMConstNull(int_type), "i2cond"); - - /* if( i1cond && i2cond ) */ - icond = LLVMBuildAnd(builder, i1cond, i2cond, ""); - - endloop = lp_build_insert_new_block(mask->bld->gallivm, "endloop"); - - LLVMBuildCondBr(builder, - icond, ctx->loop_block, endloop); - - LLVMPositionBuilderAtEnd(builder, endloop); - - assert(ctx->loop_stack_size); - --ctx->loop_stack_size; - mask->cont_mask = ctx->loop_stack[ctx->loop_stack_size].cont_mask; - mask->break_mask = ctx->loop_stack[ctx->loop_stack_size].break_mask; - ctx->loop_block = ctx->loop_stack[ctx->loop_stack_size].loop_block; - ctx->break_var = ctx->loop_stack[ctx->loop_stack_size].break_var; - ctx->break_type = ctx->break_type_stack[ctx->loop_stack_size + - ctx->switch_stack_size]; - - lp_exec_mask_update(mask); + enum tgsi_opcode opcode = + bld_base->instructions[bld_base->pc + 1].Instruction.Opcode; + bool break_always = (opcode == TGSI_OPCODE_ENDSWITCH || + opcode == TGSI_OPCODE_CASE); + lp_exec_break(mask, &bld_base->pc, break_always); } static void lp_exec_switch(struct lp_exec_mask *mask, @@ -748,34 +366,6 @@ static void lp_exec_default(struct lp_exec_mask *mask, } -/* stores val into an address pointed to by dst_ptr. - * mask->exec_mask is used to figure out which bits of val - * should be stored into the address - * (0 means don't store this bit, 1 means do store). - */ -static void lp_exec_mask_store(struct lp_exec_mask *mask, - struct lp_build_context *bld_store, - LLVMValueRef val, - LLVMValueRef dst_ptr) -{ - LLVMBuilderRef builder = mask->bld->gallivm->builder; - LLVMValueRef exec_mask = mask->has_mask ? mask->exec_mask : NULL; - - assert(lp_check_value(bld_store->type, val)); - assert(LLVMGetTypeKind(LLVMTypeOf(dst_ptr)) == LLVMPointerTypeKind); - assert(LLVMGetElementType(LLVMTypeOf(dst_ptr)) == LLVMTypeOf(val) || - LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(dst_ptr))) == LLVMArrayTypeKind); - - if (exec_mask) { - LLVMValueRef res, dst; - - dst = LLVMBuildLoad(builder, dst_ptr, ""); - res = lp_build_select(bld_store, exec_mask, val, dst); - LLVMBuildStore(builder, res, dst_ptr); - } else - LLVMBuildStore(builder, val, dst_ptr); -} - static void lp_exec_mask_call(struct lp_exec_mask *mask, int func, int *pc) @@ -4107,7 +3697,7 @@ brk_emit( { struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base); - lp_exec_break(&bld->exec_mask, bld_base); + lp_exec_tgsi_break(&bld->exec_mask, bld_base); } static void @@ -4191,7 +3781,7 @@ bgnloop_emit( { struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base); - lp_exec_bgnloop(&bld->exec_mask); + lp_exec_bgnloop(&bld->exec_mask, true); } static void diff --git a/src/gallium/auxiliary/meson.build b/src/gallium/auxiliary/meson.build index 9ebfcea8624..27cd8207e14 100644 --- a/src/gallium/auxiliary/meson.build +++ b/src/gallium/auxiliary/meson.build @@ -381,6 +381,8 @@ if with_llvm 'gallivm/lp_bld_init.h', 'gallivm/lp_bld_intr.c', 'gallivm/lp_bld_intr.h', + 'gallivm/lp_bld_ir_common.c', + 'gallivm/lp_bld_ir_common.h', 'gallivm/lp_bld_limits.h', 'gallivm/lp_bld_logic.c', 'gallivm/lp_bld_logic.h', |