1. C021TV-I3-S1

2. I.3 Programming Higher level language and compilation Bugs
Machine code
Higher level language and compilation
Bugs
Humans and languages

3. A computer is… Gérard Berry said:
A computer is completely stupid
Computers/smartphones/tablet computers are not magical objects.
They are very simple (but very fast) electronic devices. Cf
gerard-berry-lordinateur-est-completement-con

4. Machine code
A computer is stupid, so it can only obey very simple orders (tasks, instructions) depending on the GPU model: the assembler.
These instructions are limited:
moving global memory to local memory
comparing two values
adding two values
jumping to another label of the program
. . .

5. Machine code: example ⇒ we don’t want to write it this way!
movl movl cmpl jle movl addl
$0, -8(%rbp)
$7, -4(%rbp)
$0, -4(%rbp)
.L2
-4(%rbp), %eax
%eax, -8(%rbp)
.L2:
movl -8(%rbp), %eax
⇒ we don’t want to write it this way!