diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe')
-rw-r--r-- | src/gallium/drivers/llvmpipe/SConscript | 1 | ||||
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_logic.c | 174 | ||||
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_logic.h | 57 |
3 files changed, 232 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/SConscript b/src/gallium/drivers/llvmpipe/SConscript index cdd301b029..b880ca0d68 100644 --- a/src/gallium/drivers/llvmpipe/SConscript +++ b/src/gallium/drivers/llvmpipe/SConscript @@ -19,6 +19,7 @@ llvmpipe = env.ConvenienceLibrary( 'lp_bld_load.c', 'lp_bld_store.c', 'lp_bld_loop.c', + 'lp_bld_logic.c', 'lp_bld_logicop.c', 'lp_bld_swizzle.c', 'lp_bld_tgsi_soa.c', diff --git a/src/gallium/drivers/llvmpipe/lp_bld_logic.c b/src/gallium/drivers/llvmpipe/lp_bld_logic.c new file mode 100644 index 0000000000..dbca2921e6 --- /dev/null +++ b/src/gallium/drivers/llvmpipe/lp_bld_logic.c @@ -0,0 +1,174 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + + +#include "pipe/p_defines.h" +#include "lp_bld_type.h" +#include "lp_bld_intr.h" +#include "lp_bld_logic.h" + + +LLVMValueRef +lp_build_cmp(struct lp_build_context *bld, + unsigned func, + LLVMValueRef a, + LLVMValueRef b) +{ + const union lp_type type = bld->type; + LLVMTypeRef vec_type = lp_build_vec_type(type); + LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); + LLVMValueRef zeros = LLVMConstNull(int_vec_type); + LLVMValueRef ones = LLVMConstAllOnes(int_vec_type); + LLVMValueRef cond; + + if(func == PIPE_FUNC_NEVER) + return zeros; + if(func == PIPE_FUNC_ALWAYS) + return ones; + + /* TODO: optimize the constant case */ + + /* XXX: It is not clear if we should use the ordered or unordered operators */ + +#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64) + if(type.width * type.length == 128) { + if(type.floating) { + LLVMValueRef args[3]; + unsigned cc; + boolean swap; + LLVMValueRef res; + + swap = FALSE; + switch(func) { + case PIPE_FUNC_EQUAL: + cc = 0; + break; + case PIPE_FUNC_NOTEQUAL: + cc = 4; + break; + case PIPE_FUNC_LESS: + cc = 1; + break; + case PIPE_FUNC_LEQUAL: + cc = 2; + break; + case PIPE_FUNC_GREATER: + cc = 1; + swap = TRUE; + break; + case PIPE_FUNC_GEQUAL: + cc = 2; + swap = TRUE; + break; + default: + assert(0); + return bld->undef; + } + + if(swap) { + args[0] = b; + args[1] = a; + } + else { + args[0] = a; + args[1] = b; + } + + args[2] = LLVMConstInt(LLVMInt8Type(), cc, 0); + res = lp_build_intrinsic(bld->builder, + "llvm.x86.sse.cmp.ps", + vec_type, + args, 3); + res = LLVMBuildBitCast(bld->builder, res, int_vec_type, ""); + return res; + } + } +#endif + + if(type.floating) { + LLVMRealPredicate op; + switch(func) { + case PIPE_FUNC_NEVER: + op = LLVMRealPredicateFalse; + break; + case PIPE_FUNC_ALWAYS: + op = LLVMRealPredicateTrue; + break; + case PIPE_FUNC_EQUAL: + op = LLVMRealUEQ; + break; + case PIPE_FUNC_NOTEQUAL: + op = LLVMRealUNE; + break; + case PIPE_FUNC_LESS: + op = LLVMRealULT; + break; + case PIPE_FUNC_LEQUAL: + op = LLVMRealULE; + break; + case PIPE_FUNC_GREATER: + op = LLVMRealUGT; + break; + case PIPE_FUNC_GEQUAL: + op = LLVMRealUGE; + break; + default: + assert(0); + return bld->undef; + } + cond = LLVMBuildFCmp(bld->builder, op, a, b, ""); + } + else { + LLVMIntPredicate op; + switch(func) { + case PIPE_FUNC_EQUAL: + op = LLVMIntEQ; + break; + case PIPE_FUNC_NOTEQUAL: + op = LLVMIntNE; + break; + case PIPE_FUNC_LESS: + op = type.sign ? LLVMIntSLT : LLVMIntULT; + break; + case PIPE_FUNC_LEQUAL: + op = type.sign ? LLVMIntSLE : LLVMIntULE; + break; + case PIPE_FUNC_GREATER: + op = type.sign ? LLVMIntSGT : LLVMIntUGT; + break; + case PIPE_FUNC_GEQUAL: + op = type.sign ? LLVMIntSGE : LLVMIntUGE; + break; + default: + assert(0); + return bld->undef; + } + cond = LLVMBuildICmp(bld->builder, op, a, b, ""); + } + + return LLVMBuildSelect(bld->builder, cond, ones, zeros, ""); +} diff --git a/src/gallium/drivers/llvmpipe/lp_bld_logic.h b/src/gallium/drivers/llvmpipe/lp_bld_logic.h new file mode 100644 index 0000000000..a8c10d670a --- /dev/null +++ b/src/gallium/drivers/llvmpipe/lp_bld_logic.h @@ -0,0 +1,57 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/** + * @file + * Helper functions for logical operations. + * + * @author Jose Fonseca <jfonseca@vmware.com> + */ + + +#ifndef LP_BLD_LOGIC_H +#define LP_BLD_LOGIC_H + + +#include <llvm-c/Core.h> + + +union lp_type type; +struct lp_build_context; + + +/** + * @param func is one of PIPE_FUNC_xxx + */ +LLVMValueRef +lp_build_cmp(struct lp_build_context *bld, + unsigned func, + LLVMValueRef a, + LLVMValueRef b); + + +#endif /* !LP_BLD_LOGIC_H */ |