Removed optimizations which break the compiler ones.

2018-05-22 19:10:07 +02:00
parent 808d3ab471
commit 6175271651
4 changed files with 11 additions and 8 deletions
--- a/libsrc/runtime/mulax7.s
+++ b/libsrc/runtime/mulax7.s
@@ -4,6 +4,7 @@
 ;
 ; CC65 runtime: Multiply the primary register by 7
 ;
+; Don't touch the Y-register here, the optimizer relies on it!

        .export         mulax7
        .importzp       ptr1
@@ -20,12 +21,12 @@
        rol     ptr1+1                  ; * 8
        sec
        sbc     ptr1
-        tay
+        pha
        txa
        eor     #$ff
        adc     ptr1+1                  ; * (8 - 1)
        tax
-        tya
+        pla
        rts

 .endproc