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WIP work on fixing CON_DIVVAR/CON_MULVAR optimization

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git-svn-id: https://svn.eduke32.com/eduke32@7267 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2018-12-15 01:38:22 +00:00
parent cf95da82e9
commit fad17a83c0
1 changed files with 11 additions and 9 deletions
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20
source/duke3d/src/gamedef.cpp
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@ -3735,16 +3735,16 @@ setvar:
C_GetNextVarType(GAMEVAR_READONLY);
C_GetNextValue(LABEL_DEFINE);
#if 0
if (tw == CON_DIVVAR || tw == CON_MULVAR)
{
int32_t const i = ins[2];
auto const i = ins[2];
if (i == -1)
// replace multiplies or divides by 1 with nullop
if (i == 1)
{
int constexpr const opcode = CON_INV;
int constexpr const opcode = CON_NULLOP;
if (g_scriptDebug > 1 && !g_errorCnt && !g_warningCnt)
if (!g_errorCnt && !g_warningCnt && g_scriptDebug > 1)
{
initprintf("%s:%d: %s -> %s\n", g_scriptFileName, g_lineNumber,
VM_GetKeywordForID(tw), VM_GetKeywordForID(opcode));
@ -3766,16 +3766,17 @@ setvar:
scriptWriteAtOffset(opcode | LINE_NUMBER, ins);
g_scriptPtr--;
continue;
}
// replace multiplies or divides by a power of 2 with the appropriate shift
#if 0
else if (C_IntPow2((j = klabs(i))))
{
int const opcode = (tw == CON_DIVVAR) ? CON_SHIFTVARR : CON_SHIFTVARL;
// if (g_scriptDebug > 1 && !g_errorCnt && !g_warningCnt)
{
initprintf("%s:%d: %s -> %s\n", g_scriptFileName, g_lineNumber,
VM_GetKeywordForID(tw), VM_GetKeywordForID(opcode));
initprintf("%s:%d: %s %s %d -> %s %d\n", g_scriptFileName, g_lineNumber,
VM_GetKeywordForID(tw), aGameVars[ins[1]].szLabel, (int)(ins[2]), VM_GetKeywordForID(opcode), C_Pow2IntLogBase2(j));
}
scriptWriteAtOffset(opcode | LINE_NUMBER, ins);
@ -3787,9 +3788,10 @@ setvar:
scriptWriteValue(ins[1]);
initprintf("%s:%d: +++ CON_INV\n", g_scriptFileName, g_lineNumber);
}
// debug_break();
}
}
#endif
}
// replace instructions with special versions for specific var types
scriptUpdateOpcodeForVariableType(ins);
continue;