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Fixed some bugs

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1064 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2001-10-18 21:01:24 +00:00
parent c4627941e8
commit 92a4c51753
1 changed files with 9 additions and 13 deletions
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22
src/cc65/coptind.c
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@ -214,7 +214,9 @@ unsigned OptDeadJumps (CodeSeg* S)
/* Check if it's a branch, if it has a local target, and if the target
* is the next instruction.
*/
if (E->AM == AM65_BRA && E->JumpTo && E->JumpTo->Owner == CS_GetEntry (S, I+1)) {
if (E->AM == AM65_BRA &&
E->JumpTo &&
E->JumpTo->Owner == CS_GetNextEntry (S, I)) {
/* Delete the dead jump */
CS_DelEntry (S, I);
@ -467,30 +469,24 @@ unsigned OptJumpTarget (CodeSeg* S)
CodeEntry* E1; /* Entry 1 */
CodeEntry* E2; /* Entry 2 */
CodeEntry* T1; /* Jump target entry 1 */
CodeEntry* T2; /* Jump target entry 2 */
CodeLabel* TL1; /* Target label 1 */
unsigned TI; /* Target index */
/* Walk over the entries */
unsigned I = 0;
while (I < CS_GetEntryCount (S)) {
/* Get next entry */
E2 = CS_GetEntry (S, I+1);
E2 = CS_GetNextEntry (S, I);
/* Check if we have a jump or branch, and a matching label */
if ((E2->Info & OF_UBRA) != 0 && E2->JumpTo) {
if (E2 && (E2->Info & OF_UBRA) != 0 && E2->JumpTo) {
/* Get the target instruction for the label */
T2 = E2->JumpTo->Owner;
/* Get the entry preceeding this one (if possible) */
TI = CS_GetEntryIndex (S, T2);
if (TI == 0) {
/* There is no entry before this one */
/* Get the entry preceeding the branch target */
T1 = CS_GetPrevEntry (S, CS_GetEntryIndex (S, E2->JumpTo->Owner));
if (T1 == 0) {
/* There is no such entry */
goto NextEntry;
}
T1 = CS_GetEntry (S, TI-1);
/* Get the entry preceeding the jump */
E1 = CS_GetEntry (S, I);