I have written a compiler that uses Inkwell to produce LLVM IR. When compiling a simple fizz_buzz program I have created the following llir. The llir when compiled and ran causes a segfault. Why is this? Thanks.

; ModuleID = 'main'
source_filename = "main"

@global_string = global [10 x i8] c"fizzbuzzA0"
@global_string.1 = global [6 x i8] c"fizzA0"
@global_string.2 = global [6 x i8] c"buzzA0"

declare void @printf(ptr, ...)

declare void @malloc(i32)

declare void @free(ptr)

define void @fizz_buzz(i32 %x) {
entry:
  %x1 = alloca i32, align 4
  store i32 %x, ptr %x1, align 4
  %is_mod_three = alloca i32, align 4
  %is_mod_five = alloca i32, align 4
  br label %basic_block_0

basic_block_0:                                    ; preds = %entry
  %access_variable = load i32, ptr %x1, align 4
  %int_to_int = sext i32 %access_variable to i64
  %"$int_case" = srem i64 %int_to_int, 3
  %int_cmp_zero_logical_not = icmp eq i64 %"$int_case", 0
  store i1 %int_cmp_zero_logical_not, ptr %is_mod_three, align 1
  %access_variable2 = load i32, ptr %x1, align 4
  %int_to_int3 = sext i32 %access_variable2 to i64
  %"$int_case4" = srem i64 %int_to_int3, 5
  %int_cmp_zero_logical_not5 = icmp eq i64 %"$int_case4", 0
  store i1 %int_cmp_zero_logical_not5, ptr %is_mod_five, align 1
  %access_variable6 = load i32, ptr %is_mod_three, align 4
  %access_variable7 = load i32, ptr %is_mod_five, align 4
  %bitwise_and = and i32 %access_variable6, %access_variable7
  %conv_to_i1_type = trunc i32 %bitwise_and to i1
  br i1 %conv_to_i1_type, label %if_1_then, label %if_1_else

if_1_then:                                        ; preds = %basic_block_0
  call void (ptr, ...) @printf(ptr @global_string)
  br label %if_1_end

if_1_else:                                        ; preds = %basic_block_0
  %access_variable8 = load i32, ptr %is_mod_three, align 4
  %conv_to_i1_type9 = trunc i32 %access_variable8 to i1
  br i1 %conv_to_i1_type9, label %if_2_then, label %if_2_else

if_2_then:                                        ; preds = %if_1_else
  call void (ptr, ...) @printf(ptr @global_string.1)
  br label %if_2_end

if_2_else:                                        ; preds = %if_1_else
  call void (ptr, ...) @printf(ptr @global_string.2)
  br label %if_2_end

if_2_end:                                         ; preds = %if_2_else, %if_2_then
  br label %if_1_end

if_1_end:                                         ; preds = %if_2_end, %if_1_then
  ret void
}

define i32 @main() {
entry:
  %i = alloca i32, align 4
  br label %basic_block_0

basic_block_0:                                    ; preds = %entry
  store i64 0, ptr %i, align 4
  br label %loop_3

loop_3:                                           ; preds = %loop_3_body, %basic_block_0
  %access_variable = load i32, ptr %i, align 4
  %int_to_int = sext i32 %access_variable to i64
  %cmp_less_than = icmp slt i64 %int_to_int, 100
  br i1 %cmp_less_than, label %loop_3_body, label %loop_3_end

loop_3_body:                                      ; preds = %loop_3
  %access_variable1 = load i32, ptr %i, align 4
  call void @fizz_buzz(i32 %access_variable1)
  %load_ptr = load i32, ptr %i, align 4
  %inc_int = add i32 %load_ptr, 1
  store i32 %inc_int, ptr %i, align 4
  br label %loop_3

loop_3_end:                                       ; preds = %loop_3
  ret i32 0
}

i dont know what to try as i am new to llir.adskfja;lsdfj;lakdjsf;lkadsa;fkljas;ldfjka;ldjf;lakdjsf;lkads;flkjasd;fjka;lkdjsf;lakdjsf;lakdjsf;klajds;fkja;lsdfjk;alkdjsf;alkdjsf;lakdsf;lkads;fkljasdkjfa;lsdjkf;alkdjsf;lakdjsf;lkadjsflkadjsf;kl