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Change order of insns in generated sequence in OptPtrLoad17.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4034 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz 2009-08-17 16:25:54 +00:00
parent 430c13f658
commit 45aa228489
1 changed files with 13 additions and 9 deletions
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22
src/cc65/coptptrload.c
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@ -1371,9 +1371,9 @@ unsigned OptPtrLoad17 (CodeSeg* S)
* *
* and replace it by: * and replace it by:
* *
* ldy ...
* sta ptr1 * sta ptr1
* stx ptr1+1 * stx ptr1+1
* ldy ...
* lda (ptr1),y * lda (ptr1),y
* tax * tax
* dey * dey
@ -1406,30 +1406,34 @@ unsigned OptPtrLoad17 (CodeSeg* S)
/* Store the high byte */ /* Store the high byte */
X = NewCodeEntry (OP65_STA, AM65_ZP, "ptr1", 0, L[0]->LI); X = NewCodeEntry (OP65_STA, AM65_ZP, "ptr1", 0, L[0]->LI);
CS_InsertEntry (S, X, I+1); CS_InsertEntry (S, X, I+2);
/* Store the low byte */ /* Store the low byte */
X = NewCodeEntry (OP65_STX, AM65_ZP, "ptr1+1", 0, L[0]->LI); X = NewCodeEntry (OP65_STX, AM65_ZP, "ptr1+1", 0, L[0]->LI);
CS_InsertEntry (S, X, I+2); CS_InsertEntry (S, X, I+3);
/* ldy ... */
X = NewCodeEntry (L[0]->OPC, L[0]->AM, L[0]->Arg, 0, L[0]->LI);
CS_InsertEntry (S, X, I+4);
/* lda (ptr1),y */ /* lda (ptr1),y */
X = NewCodeEntry (OP65_LDA, AM65_ZP_INDY, "ptr1", 0, L[1]->LI); X = NewCodeEntry (OP65_LDA, AM65_ZP_INDY, "ptr1", 0, L[1]->LI);
CS_InsertEntry (S, X, I+3); CS_InsertEntry (S, X, I+5);
/* tax */ /* tax */
X = NewCodeEntry (OP65_TAX, AM65_IMP, 0, 0, L[1]->LI); X = NewCodeEntry (OP65_TAX, AM65_IMP, 0, 0, L[1]->LI);
CS_InsertEntry (S, X, I+4); CS_InsertEntry (S, X, I+6);
/* dey */ /* dey */
X = NewCodeEntry (OP65_DEY, AM65_IMP, 0, 0, L[1]->LI); X = NewCodeEntry (OP65_DEY, AM65_IMP, 0, 0, L[1]->LI);
CS_InsertEntry (S, X, I+5); CS_InsertEntry (S, X, I+7);
/* lda (ptr1),y */ /* lda (ptr1),y */
X = NewCodeEntry (OP65_LDA, AM65_ZP_INDY, "ptr1", 0, L[1]->LI); X = NewCodeEntry (OP65_LDA, AM65_ZP_INDY, "ptr1", 0, L[1]->LI);
CS_InsertEntry (S, X, I+6); CS_InsertEntry (S, X, I+8);
/* Delete the call to ldaxidx */ /* Delete original sequence */
CS_DelEntry (S, I+7); CS_DelEntries (S, I, 2);
/* Remember, we had changes */ /* Remember, we had changes */
++Changes; ++Changes;