Use the lea instruction to reduce number of "inc"s

diff --git a/src/tests/add_digits.s b/src/tests/add_digits.s
index 09d4ea3..39f4af9 100644 (file)
--- a/src/tests/add_digits.s
+++ b/src/tests/add_digits.s
@@ -16,23 +16,9 @@ add_digits:
                jz end_loop # We are done
                
                # Move to next element in the first array
-               inc %rdi
-               inc %rdi
-               inc %rdi
-               inc %rdi
-               inc %rdi
-               inc %rdi
-               inc %rdi
-               inc %rdi
+               leaq 8(,%rdi,1), %rdi
                # Move to next element in the second array
-               inc %rsi
-               inc %rsi
-               inc %rsi
-               inc %rsi
-               inc %rsi
-               inc %rsi
-               inc %rsi
-               inc %rsi
+               leaq 8(,%rsi,1), %rsi
                jmp loop # Repeat
        end_loop:
                movq $0, %rax