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-rw-r--r--src/gallium/drivers/llvmpipe/lp_bld_const.c369
1 files changed, 0 insertions, 369 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_const.c b/src/gallium/drivers/llvmpipe/lp_bld_const.c
deleted file mode 100644
index c8eaa8c394..0000000000
--- a/src/gallium/drivers/llvmpipe/lp_bld_const.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/**************************************************************************
- *
- * 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 constant building.
- *
- * @author Jose Fonseca <jfonseca@vmware.com>
- */
-
-#include <float.h>
-
-#include "util/u_debug.h"
-
-#include "lp_bld_type.h"
-#include "lp_bld_const.h"
-
-
-unsigned
-lp_mantissa(struct lp_type type)
-{
- assert(type.floating);
-
- if(type.floating) {
- switch(type.width) {
- case 32:
- return 23;
- case 64:
- return 53;
- default:
- assert(0);
- return 0;
- }
- }
- else {
- if(type.sign)
- return type.width - 1;
- else
- return type.width;
- }
-}
-
-
-/**
- * Shift of the unity.
- *
- * Same as lp_const_scale(), but in terms of shifts.
- */
-unsigned
-lp_const_shift(struct lp_type type)
-{
- if(type.floating)
- return 0;
- else if(type.fixed)
- return type.width/2;
- else if(type.norm)
- return type.sign ? type.width - 1 : type.width;
- else
- return 0;
-}
-
-
-unsigned
-lp_const_offset(struct lp_type type)
-{
- if(type.floating || type.fixed)
- return 0;
- else if(type.norm)
- return 1;
- else
- return 0;
-}
-
-
-/**
- * Scaling factor between the LLVM native value and its interpretation.
- *
- * This is 1.0 for all floating types and unnormalized integers, and something
- * else for the fixed points types and normalized integers.
- */
-double
-lp_const_scale(struct lp_type type)
-{
- unsigned long long llscale;
- double dscale;
-
- llscale = (unsigned long long)1 << lp_const_shift(type);
- llscale -= lp_const_offset(type);
- dscale = (double)llscale;
- assert((unsigned long long)dscale == llscale);
-
- return dscale;
-}
-
-
-/**
- * Minimum value representable by the type.
- */
-double
-lp_const_min(struct lp_type type)
-{
- unsigned bits;
-
- if(!type.sign)
- return 0.0;
-
- if(type.norm)
- return -1.0;
-
- if (type.floating) {
- switch(type.width) {
- case 32:
- return -FLT_MAX;
- case 64:
- return -DBL_MAX;
- default:
- assert(0);
- return 0.0;
- }
- }
-
- if(type.fixed)
- /* FIXME: consider the fractional bits? */
- bits = type.width / 2 - 1;
- else
- bits = type.width - 1;
-
- return (double)-((long long)1 << bits);
-}
-
-
-/**
- * Maximum value representable by the type.
- */
-double
-lp_const_max(struct lp_type type)
-{
- unsigned bits;
-
- if(type.norm)
- return 1.0;
-
- if (type.floating) {
- switch(type.width) {
- case 32:
- return FLT_MAX;
- case 64:
- return DBL_MAX;
- default:
- assert(0);
- return 0.0;
- }
- }
-
- if(type.fixed)
- bits = type.width / 2;
- else
- bits = type.width;
-
- if(type.sign)
- bits -= 1;
-
- return (double)(((unsigned long long)1 << bits) - 1);
-}
-
-
-double
-lp_const_eps(struct lp_type type)
-{
- if (type.floating) {
- switch(type.width) {
- case 32:
- return FLT_EPSILON;
- case 64:
- return DBL_EPSILON;
- default:
- assert(0);
- return 0.0;
- }
- }
- else {
- double scale = lp_const_scale(type);
- return 1.0/scale;
- }
-}
-
-
-LLVMValueRef
-lp_build_undef(struct lp_type type)
-{
- LLVMTypeRef vec_type = lp_build_vec_type(type);
- return LLVMGetUndef(vec_type);
-}
-
-
-LLVMValueRef
-lp_build_zero(struct lp_type type)
-{
- LLVMTypeRef vec_type = lp_build_vec_type(type);
- return LLVMConstNull(vec_type);
-}
-
-
-LLVMValueRef
-lp_build_one(struct lp_type type)
-{
- LLVMTypeRef elem_type;
- LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
- unsigned i;
-
- assert(type.length <= LP_MAX_VECTOR_LENGTH);
-
- elem_type = lp_build_elem_type(type);
-
- if(type.floating)
- elems[0] = LLVMConstReal(elem_type, 1.0);
- else if(type.fixed)
- elems[0] = LLVMConstInt(elem_type, 1LL << (type.width/2), 0);
- else if(!type.norm)
- elems[0] = LLVMConstInt(elem_type, 1, 0);
- else if(type.sign)
- elems[0] = LLVMConstInt(elem_type, (1LL << (type.width - 1)) - 1, 0);
- else {
- /* special case' -- 1.0 for normalized types is more easily attained if
- * we start with a vector consisting of all bits set */
- LLVMTypeRef vec_type = LLVMVectorType(elem_type, type.length);
- LLVMValueRef vec = LLVMConstAllOnes(vec_type);
-
-#if 0
- if(type.sign)
- /* TODO: Unfortunately this caused "Tried to create a shift operation
- * on a non-integer type!" */
- vec = LLVMConstLShr(vec, lp_build_int_const_scalar(type, 1));
-#endif
-
- return vec;
- }
-
- for(i = 1; i < type.length; ++i)
- elems[i] = elems[0];
-
- return LLVMConstVector(elems, type.length);
-}
-
-
-LLVMValueRef
-lp_build_const_scalar(struct lp_type type,
- double val)
-{
- LLVMTypeRef elem_type = lp_build_elem_type(type);
- LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
- unsigned i;
-
- assert(type.length <= LP_MAX_VECTOR_LENGTH);
-
- if(type.floating) {
- elems[0] = LLVMConstReal(elem_type, val);
- }
- else {
- double dscale = lp_const_scale(type);
-
- elems[0] = LLVMConstInt(elem_type, val*dscale + 0.5, 0);
- }
-
- for(i = 1; i < type.length; ++i)
- elems[i] = elems[0];
-
- return LLVMConstVector(elems, type.length);
-}
-
-
-LLVMValueRef
-lp_build_int_const_scalar(struct lp_type type,
- long long val)
-{
- LLVMTypeRef elem_type = lp_build_int_elem_type(type);
- LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
- unsigned i;
-
- assert(type.length <= LP_MAX_VECTOR_LENGTH);
-
- for(i = 0; i < type.length; ++i)
- elems[i] = LLVMConstInt(elem_type, val, type.sign ? 1 : 0);
-
- return LLVMConstVector(elems, type.length);
-}
-
-
-LLVMValueRef
-lp_build_const_aos(struct lp_type type,
- double r, double g, double b, double a,
- const unsigned char *swizzle)
-{
- const unsigned char default_swizzle[4] = {0, 1, 2, 3};
- LLVMTypeRef elem_type;
- LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
- unsigned i;
-
- assert(type.length % 4 == 0);
- assert(type.length <= LP_MAX_VECTOR_LENGTH);
-
- elem_type = lp_build_elem_type(type);
-
- if(swizzle == NULL)
- swizzle = default_swizzle;
-
- if(type.floating) {
- elems[swizzle[0]] = LLVMConstReal(elem_type, r);
- elems[swizzle[1]] = LLVMConstReal(elem_type, g);
- elems[swizzle[2]] = LLVMConstReal(elem_type, b);
- elems[swizzle[3]] = LLVMConstReal(elem_type, a);
- }
- else {
- double dscale = lp_const_scale(type);
-
- elems[swizzle[0]] = LLVMConstInt(elem_type, r*dscale + 0.5, 0);
- elems[swizzle[1]] = LLVMConstInt(elem_type, g*dscale + 0.5, 0);
- elems[swizzle[2]] = LLVMConstInt(elem_type, b*dscale + 0.5, 0);
- elems[swizzle[3]] = LLVMConstInt(elem_type, a*dscale + 0.5, 0);
- }
-
- for(i = 4; i < type.length; ++i)
- elems[i] = elems[i % 4];
-
- return LLVMConstVector(elems, type.length);
-}
-
-
-LLVMValueRef
-lp_build_const_mask_aos(struct lp_type type,
- const boolean cond[4])
-{
- LLVMTypeRef elem_type = LLVMIntType(type.width);
- LLVMValueRef masks[LP_MAX_VECTOR_LENGTH];
- unsigned i, j;
-
- assert(type.length <= LP_MAX_VECTOR_LENGTH);
-
- for(j = 0; j < type.length; j += 4)
- for(i = 0; i < 4; ++i)
- masks[j + i] = LLVMConstInt(elem_type, cond[i] ? ~0 : 0, 0);
-
- return LLVMConstVector(masks, type.length);
-}
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