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Handle more opcodes in OptCmp2

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2482 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2003-10-08 21:23:39 +00:00
parent 4cbf8b352d
commit 9a2b4dc849
1 changed files with 9 additions and 7 deletions
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16
src/cc65/coptcmp.c
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@ -6,9 +6,9 @@
/* */
/* */
/* */
/* (C) 2001-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* (C) 2001-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
@ -236,7 +236,7 @@ unsigned OptBoolTrans (CodeSeg* S)
/* Check for a boolean transformer */
if (E->OPC == OP65_JSR &&
(Cond = FindBoolCmpCond (E->Arg)) != CMP_INV &&
(N = CS_GetNextEntry (S, I)) != 0 &&
(N = CS_GetNextEntry (S, I)) != 0 &&
(N->Info & OF_ZBRA) != 0) {
/* Make the boolean transformer unnecessary by changing the
@ -306,7 +306,7 @@ unsigned OptCmp1 (CodeSeg* S)
if (E->OPC == OP65_STX &&
!CS_RangeHasLabel (S, I+1, 2) &&
CS_GetEntries (S, L, I+1, 2) &&
L[0]->OPC == OP65_STX &&
L[0]->OPC == OP65_STX &&
strcmp (L[0]->Arg, "tmp1") == 0 &&
L[1]->OPC == OP65_ORA &&
strcmp (L[1]->Arg, "tmp1") == 0) {
@ -361,22 +361,24 @@ unsigned OptCmp2 (CodeSeg* S)
/* Check for the sequence */
if ((L[0]->OPC == OP65_ADC ||
L[0]->OPC == OP65_AND ||
L[0]->OPC == OP65_ASL ||
L[0]->OPC == OP65_DEA ||
L[0]->OPC == OP65_EOR ||
L[0]->OPC == OP65_INA ||
L[0]->OPC == OP65_LDA ||
L[0]->OPC == OP65_LSR ||
L[0]->OPC == OP65_ORA ||
L[0]->OPC == OP65_PLA ||
L[0]->OPC == OP65_SBC ||
L[0]->OPC == OP65_TXA ||
L[0]->OPC == OP65_TYA) &&
!CS_RangeHasLabel (S, I+1, 2) &&
CS_GetEntries (S, L+1, I+1, 2) &&
CS_GetEntries (S, L+1, I+1, 2) &&
L[1]->OPC == OP65_CMP &&
CE_KnownImm (L[1]) &&
L[1]->Num == 0) {
/* Check for the call to boolxx. We cannot remove the compare if
/* Check for the call to boolxx. We only remove the compare if
* the carry flag is evaluated later, because the load will not
* set the carry flag.
*/