lp_bld_logic.c revision 1aede69d3a8d288af11c2ef620b51e71c2ce89b2
11aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca/************************************************************************** 21aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * 31aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * Copyright 2009 VMware, Inc. 41aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * All Rights Reserved. 51aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * 61aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * Permission is hereby granted, free of charge, to any person obtaining a 71aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * copy of this software and associated documentation files (the 81aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * "Software"), to deal in the Software without restriction, including 91aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * without limitation the rights to use, copy, modify, merge, publish, 101aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * distribute, sub license, and/or sell copies of the Software, and to 111aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * permit persons to whom the Software is furnished to do so, subject to 121aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * the following conditions: 131aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * 141aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * The above copyright notice and this permission notice (including the 151aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * next paragraph) shall be included in all copies or substantial portions 161aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * of the Software. 171aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * 181aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 191aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 201aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 211aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 221aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 231aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 241aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 251aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca * 261aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca **************************************************************************/ 271aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 281aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 291aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca#include "pipe/p_defines.h" 301aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca#include "lp_bld_type.h" 311aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca#include "lp_bld_intr.h" 321aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca#include "lp_bld_logic.h" 331aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 341aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 351aede69d3a8d288af11c2ef620b51e71c2ce89b2José FonsecaLLVMValueRef 361aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonsecalp_build_cmp(struct lp_build_context *bld, 371aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca unsigned func, 381aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef a, 391aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef b) 401aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca{ 411aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca const union lp_type type = bld->type; 421aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMTypeRef vec_type = lp_build_vec_type(type); 431aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); 441aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef zeros = LLVMConstNull(int_vec_type); 451aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef ones = LLVMConstAllOnes(int_vec_type); 461aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef cond; 471aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 481aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca if(func == PIPE_FUNC_NEVER) 491aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return zeros; 501aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca if(func == PIPE_FUNC_ALWAYS) 511aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return ones; 521aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 531aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca /* TODO: optimize the constant case */ 541aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 551aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca /* XXX: It is not clear if we should use the ordered or unordered operators */ 561aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 571aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64) 581aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca if(type.width * type.length == 128) { 591aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca if(type.floating) { 601aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef args[3]; 611aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca unsigned cc; 621aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca boolean swap; 631aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMValueRef res; 641aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 651aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca swap = FALSE; 661aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca switch(func) { 671aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_EQUAL: 681aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cc = 0; 691aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 701aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_NOTEQUAL: 711aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cc = 4; 721aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 731aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_LESS: 741aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cc = 1; 751aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 761aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_LEQUAL: 771aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cc = 2; 781aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 791aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_GREATER: 801aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cc = 1; 811aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca swap = TRUE; 821aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 831aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_GEQUAL: 841aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cc = 2; 851aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca swap = TRUE; 861aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 871aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca default: 881aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca assert(0); 891aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return bld->undef; 901aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 911aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 921aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca if(swap) { 931aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca args[0] = b; 941aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca args[1] = a; 951aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 961aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca else { 971aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca args[0] = a; 981aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca args[1] = b; 991aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1001aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 1011aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca args[2] = LLVMConstInt(LLVMInt8Type(), cc, 0); 1021aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca res = lp_build_intrinsic(bld->builder, 1031aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca "llvm.x86.sse.cmp.ps", 1041aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca vec_type, 1051aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca args, 3); 1061aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca res = LLVMBuildBitCast(bld->builder, res, int_vec_type, ""); 1071aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return res; 1081aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1091aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1101aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca#endif 1111aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 1121aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca if(type.floating) { 1131aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMRealPredicate op; 1141aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca switch(func) { 1151aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_NEVER: 1161aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealPredicateFalse; 1171aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1181aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_ALWAYS: 1191aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealPredicateTrue; 1201aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1211aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_EQUAL: 1221aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealUEQ; 1231aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1241aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_NOTEQUAL: 1251aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealUNE; 1261aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1271aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_LESS: 1281aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealULT; 1291aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1301aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_LEQUAL: 1311aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealULE; 1321aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1331aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_GREATER: 1341aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealUGT; 1351aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1361aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_GEQUAL: 1371aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMRealUGE; 1381aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1391aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca default: 1401aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca assert(0); 1411aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return bld->undef; 1421aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1431aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cond = LLVMBuildFCmp(bld->builder, op, a, b, ""); 1441aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1451aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca else { 1461aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca LLVMIntPredicate op; 1471aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca switch(func) { 1481aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_EQUAL: 1491aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMIntEQ; 1501aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1511aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_NOTEQUAL: 1521aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = LLVMIntNE; 1531aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1541aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_LESS: 1551aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = type.sign ? LLVMIntSLT : LLVMIntULT; 1561aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1571aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_LEQUAL: 1581aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = type.sign ? LLVMIntSLE : LLVMIntULE; 1591aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1601aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_GREATER: 1611aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = type.sign ? LLVMIntSGT : LLVMIntUGT; 1621aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1631aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca case PIPE_FUNC_GEQUAL: 1641aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca op = type.sign ? LLVMIntSGE : LLVMIntUGE; 1651aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca break; 1661aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca default: 1671aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca assert(0); 1681aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return bld->undef; 1691aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1701aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca cond = LLVMBuildICmp(bld->builder, op, a, b, ""); 1711aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca } 1721aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca 1731aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca return LLVMBuildSelect(bld->builder, cond, ones, zeros, ""); 1741aede69d3a8d288af11c2ef620b51e71c2ce89b2José Fonseca} 175