36 lines
1.7 KiB
Plaintext
36 lines
1.7 KiB
Plaintext
; This is not strictly LLVM, as it uses the C library function "printf".
|
|
; LLVM does not provide a way to print values, so the alternative would be
|
|
; to just load the string into memory, and that would be boring.
|
|
|
|
; Additional comments have been inserted, as well as changes made from the output produced by clang such as putting more meaningful labels for the jumps
|
|
|
|
;--- The declarations for the external C functions
|
|
declare i32 @printf(i8*, ...)
|
|
|
|
$"FORMAT_STR" = comdat any
|
|
@"FORMAT_STR" = linkonce_odr unnamed_addr constant [4 x i8] c"%u\0A\00", comdat, align 1
|
|
|
|
; Function Attrs: noinline nounwind optnone uwtable
|
|
define i32 @main() #0 {
|
|
%1 = alloca i32, align 4 ;-- allocate i
|
|
store i32 0, i32* %1, align 4 ;-- store i as 0
|
|
br label %loop
|
|
|
|
loop:
|
|
%2 = load i32, i32* %1, align 4 ;-- load i
|
|
%3 = add i32 %2, 1 ;-- increment i
|
|
store i32 %3, i32* %1, align 4 ;-- store i
|
|
%4 = icmp ne i32 %3, 0 ;-- i != 0
|
|
br i1 %4, label %loop_body, label %exit
|
|
|
|
loop_body:
|
|
%5 = load i32, i32* %1, align 4 ;-- load i
|
|
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @"FORMAT_STR", i32 0, i32 0), i32 %5)
|
|
br label %loop
|
|
|
|
exit:
|
|
ret i32 0
|
|
}
|
|
|
|
attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
|