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Add fast path for char postdec

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This commit is contained in:
Lauri Kasanen 2017-05-06 13:23:50 +03:00
parent 767f093ff8
commit ead0338c0d
1 changed files with 24 additions and 15 deletions
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9
src/cc65/expr.c
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@ -1590,6 +1590,14 @@ static void PostDec (ExprDesc* Expr)
/* Get the data type */ /* Get the data type */
Flags = TypeOf (Expr->Type); Flags = TypeOf (Expr->Type);
/* Fast path: char */
if ((Flags & CF_CHAR) == CF_CHAR && ED_GetLoc(Expr) & (E_LOC_GLOBAL | E_LOC_STATIC)) {
LoadExpr (CF_NONE, Expr);
AddCodeLine ("dec %s", ED_GetLabelName(Expr, 0));
} else {
/* Push the address if needed */ /* Push the address if needed */
PushAddr (Expr); PushAddr (Expr);
@ -1609,6 +1617,7 @@ static void PostDec (ExprDesc* Expr)
/* Restore the original value in the primary register */ /* Restore the original value in the primary register */
g_restore (Flags | CF_FORCECHAR); g_restore (Flags | CF_FORCECHAR);
}
/* The result is always an expression, no reference */ /* The result is always an expression, no reference */
ED_MakeRValExpr (Expr); ED_MakeRValExpr (Expr);