1 @.str = private constant [4 x i8] c"%d\0A\00"

     2 

     3 declare i32 @printf(i8*, ...)

     4 

     5 ; prints out an integer

     6 define i32 @printInt(i32 %x) {

     7    %t0 = getelementptr [4 x i8], [4 x i8]* @.str, i32 0, i32 0

     8    call i32 (i8*, ...) @printf(i8* %t0, i32 %x) 

     9    ret i32 %x

    10 }

    11 

    12 ; square function

    13 define i32 @sqr(i32 %x) {

    14    %tmp = mul i32 %x, %x

    15    ret i32 %tmp

    16 }

    17 

    18 ; main 

    19 define i32 @main() {

    20   %1 = call i32 @sqr(i32 5)

    21   %2 = call i32 @printInt (i32 %1)

    22   ret i32 %1

    23 }

    24