fix PreserveArgsAndLocals bug (#175)

4 years ago · 273815dfea
parent 0f599517ae
commit 273815dfea
1 changed files with 4 additions and 3 deletions
--- a/source/m3_compile.c
+++ b/source/m3_compile.c
@ -1532,17 +1532,18 @@ M3Result  PreserveArgsAndLocals  (IM3Compilation o)

        for (u32 i = 0; i < numArgsAndLocals; ++i)
        {
+            u16 localSlot = GetSlotForStackIndex (o, i);
            u16 preservedSlotIndex;
-_           (FindReferencedLocalWithinCurrentBlock (o, & preservedSlotIndex, i));
+_           (FindReferencedLocalWithinCurrentBlock (o, & preservedSlotIndex, localSlot));

-            if (preservedSlotIndex != i)
+            if (preservedSlotIndex != localSlot)
            {
                u8 type = GetStackBottomType (o, i);
                IM3Operation op = Is64BitType (type) ? op_CopySlot_64 : op_CopySlot_32;

                EmitOp          (o, op);
                EmitSlotOffset  (o, preservedSlotIndex);
-                EmitSlotOffset  (o, i);
+                EmitSlotOffset  (o, localSlot);
            }
        }
    }