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Member "mesa-20.1.8/src/gallium/drivers/r600/sfn/sfn_callstack.cpp" (16 Sep 2020, 2758 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /* -*- mesa-c++  -*-
    2  *
    3  * Copyright (c) 2019 Collabora LTD
    4  *
    5  * Author: Gert Wollny <gert.wollny@collabora.com>
    6  *
    7  * Permission is hereby granted, free of charge, to any person obtaining a
    8  * copy of this software and associated documentation files (the "Software"),
    9  * to deal in the Software without restriction, including without limitation
   10  * on the rights to use, copy, modify, merge, publish, distribute, sub
   11  * license, and/or sell copies of the Software, and to permit persons to whom
   12  * the Software is furnished to do so, subject to the following conditions:
   13  *
   14  * The above copyright notice and this permission notice (including the next
   15  * paragraph) shall be included in all copies or substantial portions of the
   16  * Software.
   17  *
   18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
   21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
   22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
   23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
   24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
   25  */
   26 
   27 #include "sfn_callstack.h"
   28 
   29 namespace r600 {
   30 
   31 CallStack::CallStack(r600_bytecode& bc):
   32    m_bc(bc)
   33 {
   34 
   35 }
   36 
   37 CallStack::~CallStack()
   38 {
   39 }
   40 
   41 int CallStack::push(unsigned type)
   42 {
   43    switch (type) {
   44    case FC_PUSH_VPM:
   45       ++m_bc.stack.push;
   46       break;
   47    case FC_PUSH_WQM:
   48       ++m_bc.stack.push_wqm;
   49       break;
   50    case FC_LOOP:
   51       ++m_bc.stack.loop;
   52       break;
   53    default:
   54       assert(0);
   55     }
   56 
   57    return update_max_depth(type);
   58 }
   59 
   60 void CallStack::pop(unsigned type)
   61 {
   62    switch(type) {
   63    case FC_PUSH_VPM:
   64       --m_bc.stack.push;
   65       assert(m_bc.stack.push >= 0);
   66       break;
   67    case FC_PUSH_WQM:
   68       --m_bc.stack.push_wqm;
   69       assert(m_bc.stack.push_wqm >= 0);
   70       break;
   71    case FC_LOOP:
   72       --m_bc.stack.loop;
   73       assert(m_bc.stack.loop >= 0);
   74       break;
   75    default:
   76       assert(0);
   77       break;
   78    }
   79 }
   80 
   81 int CallStack::update_max_depth(unsigned type)
   82 {
   83 
   84    r600_stack_info& stack = m_bc.stack;
   85    int elements;
   86    int entries;
   87 
   88    int entry_size = stack.entry_size;
   89 
   90    elements = (stack.loop + stack.push_wqm ) * entry_size;
   91    elements += stack.push;
   92 
   93    /* These next three lines are EVERGREEN specific and should
   94     * be moved to a virtual function when other chipsets are to
   95     * be supported */
   96    assert(m_bc.chip_class == EVERGREEN);
   97    if (type == FC_PUSH_VPM || stack.push > 0) {
   98       elements += 1;
   99    }
  100 
  101    entry_size = 4;
  102 
  103    entries = (elements + (entry_size - 1)) / entry_size;
  104 
  105    if (entries > stack.max_entries)
  106       stack.max_entries = entries;
  107 
  108    return elements;
  109 }
  110 
  111 }