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Generate LDY instead of INY whenever possible because this allows better

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detection of known patterns and is replaced by INY in a later step anyway.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3098 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2004-06-05 16:18:30 +00:00
parent 08eb9b7b0e
commit 522f1d86d4
1 changed files with 7 additions and 1 deletions
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6
src/cc65/coptstop.c
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@ -481,7 +481,13 @@ static unsigned Opt_staxspidx (StackOpData* D)
/* Inline the store */
X = NewCodeEntry (OP65_STA, AM65_ZP_INDY, D->ZPLo, 0, D->OpEntry->LI);
InsertEntry (D, X, D->OpIndex+1);
if (RegValIsKnown (D->OpEntry->RI->In.RegY)) {
/* Value of Y is known */
const char* Arg = MakeHexArg (D->OpEntry->RI->In.RegY + 1);
X = NewCodeEntry (OP65_LDY, AM65_IMM, Arg, 0, D->OpEntry->LI);
} else {
X = NewCodeEntry (OP65_INY, AM65_IMP, 0, 0, D->OpEntry->LI);
}
InsertEntry (D, X, D->OpIndex+2);
if (RegValIsKnown (D->OpEntry->RI->In.RegX)) {
/* Value of X is known */