/* */
/* */
/* */
-/* (C) 2001-2009 Ullrich von Bassewitz */
-/* Roemerstrasse 52 */
-/* D-70794 Filderstadt */
-/* EMail: uz@cc65.org */
+/* (C) 2001-2010, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
+static unsigned OptLoad2 (CodeSeg* S)
+/* Replace calls to ldaxysp by inline code */
+{
+ unsigned I;
+ unsigned Changes = 0;
+
+ /* Walk over the entries */
+ I = 0;
+ while (I < CS_GetEntryCount (S)) {
+
+ CodeEntry* E;
+
+ /* Get next entry */
+ E = CS_GetEntry (S, I);
+
+ /* Check for the sequence */
+ if (CE_IsCallTo (E, "ldaxysp")) {
+
+ CodeEntry* X;
+
+ /* lda (sp),y */
+ X = NewCodeEntry (OP65_LDA, AM65_ZP_INDY, "sp", 0, E->LI);
+ CS_InsertEntry (S, X, I+1);
+
+ /* tax */
+ X = NewCodeEntry (OP65_TAX, AM65_IMP, 0, 0, E->LI);
+ CS_InsertEntry (S, X, I+2);
+
+ /* dey */
+ X = NewCodeEntry (OP65_DEY, AM65_IMP, 0, 0, E->LI);
+ CS_InsertEntry (S, X, I+3);
+
+ /* lda (sp),y */
+ X = NewCodeEntry (OP65_LDA, AM65_ZP_INDY, "sp", 0, E->LI);
+ CS_InsertEntry (S, X, I+4);
+
+ /* Now remove the call to the subroutine */
+ CS_DelEntry (S, I);
+
+ /* Remember, we had changes */
+ ++Changes;
+
+ }
+
+ /* Next entry */
+ ++I;
+ }
+
+ /* Return the number of changes made */
+ return Changes;
+}
+
+
+
/*****************************************************************************/
/* Optimize stores through pointers */
/*****************************************************************************/
X = NewCodeEntry (OP65_TAY, AM65_IMP, 0, 0, L[4]->LI);
CS_InsertEntry (S, X, I+15);
- X = NewCodeEntry (OP65_LDA, L[8]->AM, L[8]->Arg, 0, L[8]->LI);
+ X = NewCodeEntry (OP65_LDA, L[9]->AM, L[9]->Arg, 0, L[9]->LI);
CS_InsertEntry (S, X, I+16);
Label = memcpy (xmalloc (Len-2), L[0]->Arg+2, Len-3);
Label[Len-3] = '\0';
X = NewCodeEntry (OP65_STA, AM65_ABSY, Label, 0, L[11]->LI);
CS_InsertEntry (S, X, I+17);
- xfree (Label);
+ xfree (Label);
/* Remove the old code */
CS_DelEntries (S, I, 12);
static OptFunc DOptJumpTarget2 = { OptJumpTarget2, "OptJumpTarget2", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptJumpTarget3 = { OptJumpTarget3, "OptJumpTarget3", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptLoad1 = { OptLoad1, "OptLoad1", 100, 0, 0, 0, 0, 0 };
+static OptFunc DOptLoad2 = { OptLoad2, "OptLoad2", 200, 0, 0, 0, 0, 0 };
static OptFunc DOptRTS = { OptRTS, "OptRTS", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptRTSJumps1 = { OptRTSJumps1, "OptRTSJumps1", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptRTSJumps2 = { OptRTSJumps2, "OptRTSJumps2", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptPtrLoad6 = { OptPtrLoad6, "OptPtrLoad6", 60, 0, 0, 0, 0, 0 };
static OptFunc DOptPtrLoad7 = { OptPtrLoad7, "OptPtrLoad7", 140, 0, 0, 0, 0, 0 };
static OptFunc DOptPtrLoad11 = { OptPtrLoad11, "OptPtrLoad11", 92, 0, 0, 0, 0, 0 };
-static OptFunc DOptPtrLoad12 = { OptPtrLoad12, "OptPtrLoad12", 50, 0, 0, 0, 0, 0 };
-static OptFunc DOptPtrLoad13 = { OptPtrLoad13, "OptPtrLoad13", 65, 0, 0, 0, 0, 0 };
+static OptFunc DOptPtrLoad12 = { OptPtrLoad12, "OptPtrLoad12", 50, 0, 0, 0, 0, 0 };
+static OptFunc DOptPtrLoad13 = { OptPtrLoad13, "OptPtrLoad13", 65, 0, 0, 0, 0, 0 };
static OptFunc DOptPtrLoad14 = { OptPtrLoad14, "OptPtrLoad14", 108, 0, 0, 0, 0, 0 };
static OptFunc DOptPtrLoad15 = { OptPtrLoad15, "OptPtrLoad15", 86, 0, 0, 0, 0, 0 };
static OptFunc DOptPtrLoad16 = { OptPtrLoad16, "OptPtrLoad16", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptStackOps = { OptStackOps, "OptStackOps", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptStackPtrOps = { OptStackPtrOps, "OptStackPtrOps", 50, 0, 0, 0, 0, 0 };
static OptFunc DOptStore1 = { OptStore1, "OptStore1", 70, 0, 0, 0, 0, 0 };
-static OptFunc DOptStore2 = { OptStore2, "OptStore2", 220, 0, 0, 0, 0, 0 };
+static OptFunc DOptStore2 = { OptStore2, "OptStore2", 115, 0, 0, 0, 0, 0 };
static OptFunc DOptStore3 = { OptStore3, "OptStore3", 120, 0, 0, 0, 0, 0 };
static OptFunc DOptStore4 = { OptStore4, "OptStore4", 50, 0, 0, 0, 0, 0 };
static OptFunc DOptStore5 = { OptStore5, "OptStore5", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptSub1 = { OptSub1, "OptSub1", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptSub2 = { OptSub2, "OptSub2", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptSub3 = { OptSub3, "OptSub3", 100, 0, 0, 0, 0, 0 };
-static OptFunc DOptTest1 = { OptTest1, "OptTest1", 100, 0, 0, 0, 0, 0 };
+static OptFunc DOptTest1 = { OptTest1, "OptTest1", 65, 0, 0, 0, 0, 0 };
+static OptFunc DOptTest2 = { OptTest2, "OptTest2", 50, 0, 0, 0, 0, 0 };
static OptFunc DOptTransfers1 = { OptTransfers1, "OptTransfers1", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptTransfers2 = { OptTransfers2, "OptTransfers2", 60, 0, 0, 0, 0, 0 };
static OptFunc DOptTransfers3 = { OptTransfers3, "OptTransfers3", 65, 0, 0, 0, 0, 0 };
&DOptJumpTarget2,
&DOptJumpTarget3,
&DOptLoad1,
+ &DOptLoad2,
&DOptNegA1,
&DOptNegA2,
&DOptNegAX1,
&DOptSub2,
&DOptSub3,
&DOptTest1,
+ &DOptTest2,
&DOptTransfers1,
&DOptTransfers2,
&DOptTransfers3,
Changes += RunOptFunc (S, &DOptAdd1, 1);
Changes += RunOptFunc (S, &DOptAdd2, 1);
Changes += RunOptFunc (S, &DOptAdd4, 1);
+ Changes += RunOptFunc (S, &DOptAdd5, 1);
+ Changes += RunOptFunc (S, &DOptAdd6, 1);
+ Changes += RunOptFunc (S, &DOptAdd6, 1);
+ Changes += RunOptFunc (S, &DOptSub1, 1);
+ Changes += RunOptFunc (S, &DOptSub3, 1);
Changes += RunOptFunc (S, &DOptStore4, 1);
Changes += RunOptFunc (S, &DOptStore5, 1);
Changes += RunOptFunc (S, &DOptShift1, 1);
C += RunOptFunc (S, &DOptNegA1, 1);
C += RunOptFunc (S, &DOptNegA2, 1);
+ C += RunOptFunc (S, &DOptStackOps, 1);
C += RunOptFunc (S, &DOptSub1, 1);
C += RunOptFunc (S, &DOptSub2, 1);
C += RunOptFunc (S, &DOptSub3, 1);
C += RunOptFunc (S, &DOptAdd5, 1);
C += RunOptFunc (S, &DOptAdd6, 1);
- C += RunOptFunc (S, &DOptStackOps, 1);
C += RunOptFunc (S, &DOptJumpCascades, 1);
C += RunOptFunc (S, &DOptDeadJumps, 1);
C += RunOptFunc (S, &DOptRTS, 1);
static unsigned RunOptGroup4 (CodeSeg* S)
+/* Run another round of pattern replacements. These are done late, since there
+ * may be better replacements before.
+ */
+{
+ unsigned Changes = 0;
+
+ /* Repeat some of the steps here */
+ Changes += RunOptFunc (S, &DOptPush1, 1);
+ Changes += RunOptFunc (S, &DOptPush2, 1);
+ Changes += RunOptFunc (S, &DOptUnusedLoads, 1);
+ Changes += RunOptFunc (S, &DOptTest2, 1);
+ Changes += RunOptFunc (S, &DOptTransfers2, 1);
+ Changes += RunOptFunc (S, &DOptLoad2, 1);
+
+ /* Return the number of changes */
+ return Changes;
+}
+
+
+
+static unsigned RunOptGroup5 (CodeSeg* S)
/* 65C02 specific optimizations. */
{
unsigned Changes = 0;
-static unsigned RunOptGroup5 (CodeSeg* S)
-/* Run another round of pattern replacements. These are done late, since there
- * may be better replacements before.
- */
-{
- unsigned Changes = 0;
-
- Changes += RunOptFunc (S, &DOptPush1, 1);
- Changes += RunOptFunc (S, &DOptPush2, 1);
- /* Repeat some of the other optimizations now */
- Changes += RunOptFunc (S, &DOptUnusedLoads, 1);
- Changes += RunOptFunc (S, &DOptTransfers2, 1);
-
- /* Return the number of changes */
- return Changes;
-}
-
-
-
static unsigned RunOptGroup6 (CodeSeg* S)
/* This one is quite special. It tries to replace "lda (sp),y" by "lda (sp,x)".
* The latter is ony cycle slower, but if we're able to remove the necessary
projects / cc65 / blobdiff