--- /dev/null
+/**************************************************************************
+ *
+ * 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, "");
+}
--- /dev/null
+/**************************************************************************
+ *
+ * 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 */
projects / mesa.git / commitdiff