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long arith(long x, long y, long z) {
  long t1 = x + y;
  long t2 = z + t1;
  long t3 = x + 4;
  long t4 = y * 48;
  long t5 = t3 + t4;
  long rval = t2 * t5;
  return rval;
}

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# Filename: arith.s
# Description: Demo of arithmetic and logical 
# Auhtor: AL


# long arith(long x, long y, long z) {
#   long t1 = x + y;
#   long t2 = z + t1;
#   long t3 = x + 4;
#   long t4 = y * 48;
#   long t5 = t3 + t4;
#   long rval = t2 * t5;
#   return rval;
#  }

	.globl	arith
arith:  # mine
     # x → %rdi, y → %rsi, z → %rdx
     # addq %rsi, %rdi # Bad! because overwrites %rdi which is needed later on for "t3 = x + 4"
     # addq %rdi, %rsi # Bad! because overwrites %rsi which is needed later on for "t4 = y * 48"
     movq %rdi, %rax # x → %rax <- function's returned value
     addq %rsi, %rax # t1 = x + y; t1 → %rax
     addq %rdx, %rax # t2 = z + t1; t2 → %rax
     addq $4, %rdi   # t3 = x + 4; t3 → %rdi
     imul $48, %rsi  # t4 = y * 48; t4 → %rsi
     addq %rsi, %rdi # t5 = t3 + t4; t5 → %rdi
     imul %rdi, %rax # rval = t2 * t5; rval → %rax
     ret

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