#6 Unexpected termination of execution using flow control

[Anonymous]

In certain situations, control flow instructions unexpectedly terminate execution without warning.

Functional example:

1 .data
2 .text
3 main:
4 b foo
5 foo:
6 nop
7 done

Program foo.s completed successfully. Executed in 3
cycles (0.3s)

Non-functional example:

1 .data
2 .text
3 foo:
4 nop
5 done
6 main:
7 b foo

Program foo.s completed successfully. Executed in 2
cycles (0.3s)

Note that the two examples are identical except that lines 3-4 in the functional example are floated down to lines 6-7 in the non-functional example. This modification in theory does not alter program flow. However, in the non-functional example, execution terminates at line 7 and line 4 is never executed.