simplify _loop so that the "prologe" is shorter and the jump is back into

the first < 5 bytes
2018-01-03 21:35:00 +01:00
parent 8989abafd2
commit 2048bdb6e1
10 changed files with 25 additions and 29 deletions
--- a/test_cases/backwards.asm
+++ b/test_cases/backwards.asm
@@ -6,16 +6,13 @@ use64

 public _loop
 _loop:
-	xor eax, eax
-	inc eax
-	mov rbx, rdx ; RDX is overwritten by mul
-@again:
-	cmp rbx, 0
-	je @loop_end
+	mov rax, rcx
+@loop_loop:
 	mul rcx
-	dec rbx
-	jmp @again
-@loop_end:
+	nop
+	nop
+	nop
+	loop @loop_loop ; lol
 	ret

 public _tail_recursion