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Problem 156
Sum of n where f(n,d)=n for digits d=1..9.
View problem on Project Euler
Performance comparison
Metric Our solution Best known
Time complexity O(2^n)O(n log log n)
Space complexity O(1)O(n)
Approach Flow solution Sieve or enumeration
Verdict Suboptimal
Flow source
# Project Euler 156
# Sum of n where f(n,d)=n for digits d=1..9.
function count_single(digit: i64, value0: i64) -> i64 {
if value0 == 0 && digit == 0 { return 1 }
let mut result: i64 = 0
let mut value: i64 = value0
while value > 0 {
if value % 10 == digit { result = result + 1 }
value = value / 10
}
return result
}
function count_digit(digit: i64, value: i64) -> i64 {
if value < 10 {
if value < digit { return 0 }
return 1
}
let mut shift: i64 = 1
let mut multiplier: i64 = 0
while shift * 10 <= value {
shift = shift * 10
multiplier = multiplier + 1
}
multiplier = multiplier * (shift / 10)
let first: i64 = value / shift
let remainder: i64 = value % shift
let mut result: i64 = first * multiplier + count_digit(digit, remainder)
if digit == first {
result = result + remainder + 1
}
if digit < first && digit > 0 {
result = result + shift
}
return result
}
function find_all(digit: i64, start0: i64, end0: i64) -> i64 {
let mut start: i64 = start0
let end: i64 = end0
let center0: i64 = (start + end) / 2
if start == center0 {
let current: i64 = count_digit(digit, start)
if current == start { return start }
return 0
}
let mut result: i64 = 0
let mut count_from: i64 = count_digit(digit, start)
while count_from == start && start < end {
result = result + start
start = start + 1
count_from = count_from + count_single(digit, start)
}
if start >= end + 1 {
return result
}
let center: i64 = (start + end) / 2
let count_center: i64 = count_digit(digit, center)
let count_to: i64 = count_digit(digit, end)
if count_center >= start && center >= count_from && center > start {
result = result + find_all(digit, start, center)
}
if count_to >= center && end >= count_center && center < end {
result = result + find_all(digit, center, end)
}
return result
}
function main() -> i32 {
let limit: i64 = 1000000000000
let mut total: i64 = 0
let mut d: i64 = 1
while d <= 9 {
total = total + find_all(d, 0, limit)
d = d + 1
}
printf("%lld\n", total)
return 0
}
Generated C
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Flow runtime helpers */
typedef struct flow_temp_node { struct flow_temp_node* next; } flow_temp_node;
static flow_temp_node* flow_temp_head = NULL;
static int flow_temp_atexit_set = 0;
__attribute__((unused)) static void flow_temp_free_all(void) {
while (flow_temp_head) {
flow_temp_node* n = flow_temp_head;
flow_temp_head = n->next;
free(n);
}
}
__attribute__((unused)) static void* flow_temp_alloc(size_t nbytes) {
flow_temp_node* node = (flow_temp_node*)malloc(sizeof(flow_temp_node) + nbytes);
if (!node) return NULL;
node->next = flow_temp_head;
flow_temp_head = node;
if (!flow_temp_atexit_set) {
flow_temp_atexit_set = 1;
atexit(flow_temp_free_all);
}
return (void*)(node + 1);
}
#ifndef FLOW_DIAG
#define FLOW_DIAG(msg) fprintf(stderr, "%s", (msg))
#endif
#ifndef FLOW_LOG
#define FLOW_LOG(fmt, ...) printf(fmt, __VA_ARGS__)
#endif
#ifndef FLOW_LOG_EMPTY
#define FLOW_LOG_EMPTY(fmt) printf(fmt)
#endif
static char* flow_strcat(const char* a, const char* b) {
size_t la = strlen(a ? a : ""), lb = strlen(b ? b : "");
char* r = (char*)flow_temp_alloc(la + lb + 1);
if (!r) return NULL;
if (la) memcpy(r, a, la);
if (lb) memcpy(r + la, b, lb);
r[la + lb] = '\0';
return r;
}
#define __flow_in_arr(arr, val) __extension__ ({ \
int _found = 0; \
size_t _n = sizeof(arr)/sizeof((arr)[0]); \
for (size_t _i = 0; _i < _n; _i++) { \
if ((arr)[_i] == (val)) { _found = 1; break; } \
} _found; })
/* Unified fault handler (MISRA #279) — override with -DFLOW_FAULT_HANDLER=fn */
#ifndef FLOW_FAULT_HANDLER
__attribute__((unused)) static inline void flow_fault_handler(const char* msg) {
fprintf(stderr, "flow: %s\n", msg ? msg : "fault");
abort();
#if defined(__GNUC__) || defined(__clang__)
__builtin_unreachable();
#endif
}
#else
#define flow_fault_handler FLOW_FAULT_HANDLER
#endif
#define flow_div_by_zero_handler() flow_fault_handler("division by zero")
#define flow_shift_ub_handler() flow_fault_handler("invalid shift (amount out of range or left-shift of negative)")
#ifndef FLOW_CHECKED_DIV
#define FLOW_CHECKED_DIV(L, R) (((R) != 0) ? ((L) / (R)) : (flow_div_by_zero_handler(), (L) * 0))
#endif
#ifndef FLOW_CHECKED_MOD
#define FLOW_CHECKED_MOD(L, R) (((R) != 0) ? ((L) % (R)) : (flow_div_by_zero_handler(), (L) * 0))
#endif
#ifndef FLOW_CHECKED_SHL
#define FLOW_CHECKED_SHL(L, R) ((((R) >= 0) && ((unsigned long long)(R) < (sizeof(L) * 8ull)) && ((L) >= 0)) ? ((L) << (R)) : (flow_shift_ub_handler(), (L) * 0))
#endif
#ifndef FLOW_CHECKED_SHR
#define FLOW_CHECKED_SHR(L, R) ((((R) >= 0) && ((unsigned long long)(R) < (sizeof(L) * 8ull))) ? ((L) >> (R)) : (flow_shift_ub_handler(), (L) * 0))
#endif
#include <math.h>
void* _ui_state = NULL;
static inline float i32_to_f32(int32_t v) { return (float)v; }
/* Host stub for @gpu kernels (device codegen replaces this). */
static inline int32_t gpu_thread_id(void) { return 0; }
int64_t count_single_i64_i64(int64_t digit, int64_t value0);
int64_t count_digit_i64_i64(int64_t digit, int64_t value);
int64_t find_all_i64_i64_i64(int64_t digit, int64_t start0, int64_t end0);
int32_t main(void);
int64_t count_single_i64_i64(int64_t digit, int64_t value0) {
if ((value0 == 0 && digit == 0)) {
return 1;
}
int64_t result = 0;
int64_t value = value0;
while (value > 0) {
if (FLOW_CHECKED_MOD((value), (10)) == digit) {
result = (result + 1);
}
value = FLOW_CHECKED_DIV((value), (10));
}
return result;
}
int64_t count_digit_i64_i64(int64_t digit, int64_t value) {
if (value < 10) {
if (value < digit) {
return 0;
}
return 1;
}
int64_t shift = 1;
int64_t multiplier = 0;
while ((shift * 10) <= value) {
shift = (shift * 10);
multiplier = (multiplier + 1);
}
multiplier = (multiplier * FLOW_CHECKED_DIV((shift), (10)));
int64_t first = FLOW_CHECKED_DIV((value), (shift));
int64_t remainder = FLOW_CHECKED_MOD((value), (shift));
int64_t result = ((first * multiplier) + count_digit_i64_i64(digit, remainder));
if (digit == first) {
result = ((result + remainder) + 1);
}
if ((digit < first && digit > 0)) {
result = (result + shift);
}
return result;
}
int64_t find_all_i64_i64_i64(int64_t digit, int64_t start0, int64_t end0) {
int64_t start = start0;
int64_t end = end0;
int64_t center0 = FLOW_CHECKED_DIV(((start + end)), (2));
if (start == center0) {
int64_t current = count_digit_i64_i64(digit, start);
if (current == start) {
return start;
}
return 0;
}
int64_t result = 0;
int64_t count_from = count_digit_i64_i64(digit, start);
while ((count_from == start && start < end)) {
result = (result + start);
start = (start + 1);
count_from = (count_from + count_single_i64_i64(digit, start));
}
if (start >= (end + 1)) {
return result;
}
int64_t center = FLOW_CHECKED_DIV(((start + end)), (2));
int64_t count_center = count_digit_i64_i64(digit, center);
int64_t count_to = count_digit_i64_i64(digit, end);
if (((count_center >= start && center >= count_from) && center > start)) {
result = (result + find_all_i64_i64_i64(digit, start, center));
}
if (((count_to >= center && end >= count_center) && center < end)) {
result = (result + find_all_i64_i64_i64(digit, center, end));
}
return result;
}
int32_t main(void) {
int64_t limit = 1000000000000;
int64_t total = 0;
int64_t d = 1;
while (d <= 9) {
total = (total + find_all_i64_i64_i64(d, 0, limit));
d = (d + 1);
}
printf("%lld\n", total);
return 0;
}
Generated MLIR
module {
llvm.func @printf(!llvm.ptr, ...) -> i32
llvm.mlir.global internal constant @str_0("%lld\n\00") {addr_space = 0 : i32} : !llvm.array<6 x i8>
func.func @count_single(%arg0: i64, %arg1: i64) -> i64 {
%0 = arith.constant 0 : i32
%2 = arith.extsi %0 : i32 to i64
%1 = arith.cmpi eq, %arg1, %2 : i64
%3 = scf.if %1 -> (i1) {
%4 = arith.constant 0 : i32
%6 = arith.extsi %4 : i32 to i64
%5 = arith.cmpi eq, %arg0, %6 : i64
scf.yield %5 : i1
} else {
%7 = arith.constant false
scf.yield %7 : i1
}
cf.cond_br %3, ^bb0, ^bb1
^bb0:
%8 = arith.constant 1 : i32
%9 = arith.extsi %8 : i32 to i64
func.return %9 : i64
^bb1:
cf.br ^bb2
^bb2:
%10 = arith.constant 0 : i32
%11 = arith.extsi %10 : i32 to i64
%12 = llvm.mlir.constant(1 : i64) : i64
%13 = llvm.alloca %12 x i64 : (i64) -> !llvm.ptr
llvm.store %11, %13 : i64, !llvm.ptr
%14 = llvm.mlir.constant(1 : i64) : i64
%15 = llvm.alloca %14 x i64 : (i64) -> !llvm.ptr
llvm.store %arg1, %15 : i64, !llvm.ptr
cf.br ^bb3
^bb3:
%16 = llvm.load %15 : !llvm.ptr -> i64
%17 = arith.constant 0 : i32
%19 = arith.extsi %17 : i32 to i64
%18 = arith.cmpi sgt, %16, %19 : i64
cf.cond_br %18, ^bb4, ^bb5
^bb4:
%20 = llvm.load %15 : !llvm.ptr -> i64
%21 = arith.constant 10 : i32
%23 = arith.extsi %21 : i32 to i64
%22 = arith.remsi %20, %23 : i64
%24 = arith.cmpi eq, %22, %arg0 : i64
cf.cond_br %24, ^bb6, ^bb7
^bb6:
%25 = llvm.load %13 : !llvm.ptr -> i64
%26 = arith.constant 1 : i32
%28 = arith.extsi %26 : i32 to i64
%27 = arith.addi %25, %28 : i64
llvm.store %27, %13 : i64, !llvm.ptr
cf.br ^bb8
^bb7:
cf.br ^bb8
^bb8:
%29 = llvm.load %15 : !llvm.ptr -> i64
%30 = arith.constant 10 : i32
%32 = arith.extsi %30 : i32 to i64
%31 = arith.divsi %29, %32 : i64
llvm.store %31, %15 : i64, !llvm.ptr
cf.br ^bb3
^bb5:
%33 = llvm.load %13 : !llvm.ptr -> i64
func.return %33 : i64
}
func.func @count_digit(%arg0: i64, %arg1: i64) -> i64 {
%34 = arith.constant 10 : i32
%36 = arith.extsi %34 : i32 to i64
%35 = arith.cmpi slt, %arg1, %36 : i64
cf.cond_br %35, ^bb9, ^bb10
^bb9:
%37 = arith.cmpi slt, %arg1, %arg0 : i64
cf.cond_br %37, ^bb12, ^bb13
^bb12:
%38 = arith.constant 0 : i32
%39 = arith.extsi %38 : i32 to i64
func.return %39 : i64
^bb13:
cf.br ^bb14
^bb14:
%40 = arith.constant 1 : i32
%41 = arith.extsi %40 : i32 to i64
func.return %41 : i64
^bb10:
cf.br ^bb11
^bb11:
%42 = arith.constant 1 : i32
%43 = arith.extsi %42 : i32 to i64
%44 = llvm.mlir.constant(1 : i64) : i64
%45 = llvm.alloca %44 x i64 : (i64) -> !llvm.ptr
llvm.store %43, %45 : i64, !llvm.ptr
%46 = arith.constant 0 : i32
%47 = arith.extsi %46 : i32 to i64
%48 = llvm.mlir.constant(1 : i64) : i64
%49 = llvm.alloca %48 x i64 : (i64) -> !llvm.ptr
llvm.store %47, %49 : i64, !llvm.ptr
cf.br ^bb15
^bb15:
%50 = llvm.load %45 : !llvm.ptr -> i64
%51 = arith.constant 10 : i32
%53 = arith.extsi %51 : i32 to i64
%52 = arith.muli %50, %53 : i64
%54 = arith.cmpi sle, %52, %arg1 : i64
cf.cond_br %54, ^bb16, ^bb17
^bb16:
%55 = llvm.load %45 : !llvm.ptr -> i64
%56 = arith.constant 10 : i32
%58 = arith.extsi %56 : i32 to i64
%57 = arith.muli %55, %58 : i64
llvm.store %57, %45 : i64, !llvm.ptr
%59 = llvm.load %49 : !llvm.ptr -> i64
%60 = arith.constant 1 : i32
%62 = arith.extsi %60 : i32 to i64
%61 = arith.addi %59, %62 : i64
llvm.store %61, %49 : i64, !llvm.ptr
cf.br ^bb15
^bb17:
%63 = llvm.load %49 : !llvm.ptr -> i64
%64 = llvm.load %45 : !llvm.ptr -> i64
%65 = arith.constant 10 : i32
%67 = arith.extsi %65 : i32 to i64
%66 = arith.divsi %64, %67 : i64
%68 = arith.muli %63, %66 : i64
llvm.store %68, %49 : i64, !llvm.ptr
%69 = llvm.load %45 : !llvm.ptr -> i64
%70 = arith.divsi %arg1, %69 : i64
%71 = llvm.load %45 : !llvm.ptr -> i64
%72 = arith.remsi %arg1, %71 : i64
%73 = llvm.load %49 : !llvm.ptr -> i64
%74 = arith.muli %70, %73 : i64
%75 = func.call @count_digit(%arg0, %72) : (i64, i64) -> i64
%76 = arith.addi %74, %75 : i64
%77 = llvm.mlir.constant(1 : i64) : i64
%78 = llvm.alloca %77 x i64 : (i64) -> !llvm.ptr
llvm.store %76, %78 : i64, !llvm.ptr
%79 = arith.cmpi eq, %arg0, %70 : i64
cf.cond_br %79, ^bb18, ^bb19
^bb18:
%80 = llvm.load %78 : !llvm.ptr -> i64
%81 = arith.addi %80, %72 : i64
%82 = arith.constant 1 : i32
%84 = arith.extsi %82 : i32 to i64
%83 = arith.addi %81, %84 : i64
llvm.store %83, %78 : i64, !llvm.ptr
cf.br ^bb20
^bb19:
cf.br ^bb20
^bb20:
%85 = arith.cmpi slt, %arg0, %70 : i64
%86 = scf.if %85 -> (i1) {
%87 = arith.constant 0 : i32
%89 = arith.extsi %87 : i32 to i64
%88 = arith.cmpi sgt, %arg0, %89 : i64
scf.yield %88 : i1
} else {
%90 = arith.constant false
scf.yield %90 : i1
}
cf.cond_br %86, ^bb21, ^bb22
^bb21:
%91 = llvm.load %78 : !llvm.ptr -> i64
%92 = llvm.load %45 : !llvm.ptr -> i64
%93 = arith.addi %91, %92 : i64
llvm.store %93, %78 : i64, !llvm.ptr
cf.br ^bb23
^bb22:
cf.br ^bb23
^bb23:
%94 = llvm.load %78 : !llvm.ptr -> i64
func.return %94 : i64
}
func.func @find_all(%arg0: i64, %arg1: i64, %arg2: i64) -> i64 {
%95 = llvm.mlir.constant(1 : i64) : i64
%96 = llvm.alloca %95 x i64 : (i64) -> !llvm.ptr
llvm.store %arg1, %96 : i64, !llvm.ptr
%97 = llvm.load %96 : !llvm.ptr -> i64
%98 = arith.addi %97, %arg2 : i64
%99 = arith.constant 2 : i32
%101 = arith.extsi %99 : i32 to i64
%100 = arith.divsi %98, %101 : i64
%102 = llvm.load %96 : !llvm.ptr -> i64
%103 = arith.cmpi eq, %102, %100 : i64
cf.cond_br %103, ^bb24, ^bb25
^bb24:
%105 = llvm.load %96 : !llvm.ptr -> i64
%104 = func.call @count_digit(%arg0, %105) : (i64, i64) -> i64
%106 = llvm.load %96 : !llvm.ptr -> i64
%107 = arith.cmpi eq, %104, %106 : i64
cf.cond_br %107, ^bb27, ^bb28
^bb27:
%108 = llvm.load %96 : !llvm.ptr -> i64
func.return %108 : i64
^bb28:
cf.br ^bb29
^bb29:
%109 = arith.constant 0 : i32
%110 = arith.extsi %109 : i32 to i64
func.return %110 : i64
^bb25:
cf.br ^bb26
^bb26:
%111 = arith.constant 0 : i32
%112 = arith.extsi %111 : i32 to i64
%113 = llvm.mlir.constant(1 : i64) : i64
%114 = llvm.alloca %113 x i64 : (i64) -> !llvm.ptr
llvm.store %112, %114 : i64, !llvm.ptr
%116 = llvm.load %96 : !llvm.ptr -> i64
%115 = func.call @count_digit(%arg0, %116) : (i64, i64) -> i64
%117 = llvm.mlir.constant(1 : i64) : i64
%118 = llvm.alloca %117 x i64 : (i64) -> !llvm.ptr
llvm.store %115, %118 : i64, !llvm.ptr
cf.br ^bb30
^bb30:
%119 = llvm.load %118 : !llvm.ptr -> i64
%120 = llvm.load %96 : !llvm.ptr -> i64
%121 = arith.cmpi eq, %119, %120 : i64
%122 = scf.if %121 -> (i1) {
%123 = llvm.load %96 : !llvm.ptr -> i64
%124 = arith.cmpi slt, %123, %arg2 : i64
scf.yield %124 : i1
} else {
%125 = arith.constant false
scf.yield %125 : i1
}
cf.cond_br %122, ^bb31, ^bb32
^bb31:
%126 = llvm.load %114 : !llvm.ptr -> i64
%127 = llvm.load %96 : !llvm.ptr -> i64
%128 = arith.addi %126, %127 : i64
llvm.store %128, %114 : i64, !llvm.ptr
%129 = llvm.load %96 : !llvm.ptr -> i64
%130 = arith.constant 1 : i32
%132 = arith.extsi %130 : i32 to i64
%131 = arith.addi %129, %132 : i64
llvm.store %131, %96 : i64, !llvm.ptr
%133 = llvm.load %118 : !llvm.ptr -> i64
%135 = llvm.load %96 : !llvm.ptr -> i64
%134 = func.call @count_single(%arg0, %135) : (i64, i64) -> i64
%136 = arith.addi %133, %134 : i64
llvm.store %136, %118 : i64, !llvm.ptr
cf.br ^bb30
^bb32:
%137 = llvm.load %96 : !llvm.ptr -> i64
%138 = arith.constant 1 : i32
%140 = arith.extsi %138 : i32 to i64
%139 = arith.addi %arg2, %140 : i64
%141 = arith.cmpi sge, %137, %139 : i64
cf.cond_br %141, ^bb33, ^bb34
^bb33:
%142 = llvm.load %114 : !llvm.ptr -> i64
func.return %142 : i64
^bb34:
cf.br ^bb35
^bb35:
%143 = llvm.load %96 : !llvm.ptr -> i64
%144 = arith.addi %143, %arg2 : i64
%145 = arith.constant 2 : i32
%147 = arith.extsi %145 : i32 to i64
%146 = arith.divsi %144, %147 : i64
%148 = func.call @count_digit(%arg0, %146) : (i64, i64) -> i64
%149 = func.call @count_digit(%arg0, %arg2) : (i64, i64) -> i64
%150 = llvm.load %96 : !llvm.ptr -> i64
%151 = arith.cmpi sge, %148, %150 : i64
%152 = scf.if %151 -> (i1) {
%153 = llvm.load %118 : !llvm.ptr -> i64
%154 = arith.cmpi sge, %146, %153 : i64
scf.yield %154 : i1
} else {
%155 = arith.constant false
scf.yield %155 : i1
}
%156 = scf.if %152 -> (i1) {
%157 = llvm.load %96 : !llvm.ptr -> i64
%158 = arith.cmpi sgt, %146, %157 : i64
scf.yield %158 : i1
} else {
%159 = arith.constant false
scf.yield %159 : i1
}
cf.cond_br %156, ^bb36, ^bb37
^bb36:
%160 = llvm.load %114 : !llvm.ptr -> i64
%162 = llvm.load %96 : !llvm.ptr -> i64
%161 = func.call @find_all(%arg0, %162, %146) : (i64, i64, i64) -> i64
%163 = arith.addi %160, %161 : i64
llvm.store %163, %114 : i64, !llvm.ptr
cf.br ^bb38
^bb37:
cf.br ^bb38
^bb38:
%164 = arith.cmpi sge, %149, %146 : i64
%165 = scf.if %164 -> (i1) {
%166 = arith.cmpi sge, %arg2, %148 : i64
scf.yield %166 : i1
} else {
%167 = arith.constant false
scf.yield %167 : i1
}
%168 = scf.if %165 -> (i1) {
%169 = arith.cmpi slt, %146, %arg2 : i64
scf.yield %169 : i1
} else {
%170 = arith.constant false
scf.yield %170 : i1
}
cf.cond_br %168, ^bb39, ^bb40
^bb39:
%171 = llvm.load %114 : !llvm.ptr -> i64
%172 = func.call @find_all(%arg0, %146, %arg2) : (i64, i64, i64) -> i64
%173 = arith.addi %171, %172 : i64
llvm.store %173, %114 : i64, !llvm.ptr
cf.br ^bb41
^bb40:
cf.br ^bb41
^bb41:
%174 = llvm.load %114 : !llvm.ptr -> i64
func.return %174 : i64
}
func.func @main() -> i32 {
%175 = arith.constant 995705032704 : i32
%176 = arith.extsi %175 : i32 to i64
%177 = arith.constant 0 : i32
%178 = arith.extsi %177 : i32 to i64
%179 = llvm.mlir.constant(1 : i64) : i64
%180 = llvm.alloca %179 x i64 : (i64) -> !llvm.ptr
llvm.store %178, %180 : i64, !llvm.ptr
%181 = arith.constant 1 : i32
%182 = arith.extsi %181 : i32 to i64
%183 = llvm.mlir.constant(1 : i64) : i64
%184 = llvm.alloca %183 x i64 : (i64) -> !llvm.ptr
llvm.store %182, %184 : i64, !llvm.ptr
cf.br ^bb42
^bb42:
%185 = llvm.load %184 : !llvm.ptr -> i64
%186 = arith.constant 9 : i32
%188 = arith.extsi %186 : i32 to i64
%187 = arith.cmpi sle, %185, %188 : i64
cf.cond_br %187, ^bb43, ^bb44
^bb43:
%189 = llvm.load %180 : !llvm.ptr -> i64
%191 = llvm.load %184 : !llvm.ptr -> i64
%192 = arith.constant 0 : i32
%193 = arith.extsi %192 : i32 to i64
%190 = func.call @find_all(%191, %193, %176) : (i64, i64, i64) -> i64
%194 = arith.addi %189, %190 : i64
llvm.store %194, %180 : i64, !llvm.ptr
%195 = llvm.load %184 : !llvm.ptr -> i64
%196 = arith.constant 1 : i32
%198 = arith.extsi %196 : i32 to i64
%197 = arith.addi %195, %198 : i64
llvm.store %197, %184 : i64, !llvm.ptr
cf.br ^bb42
^bb44:
%199 = llvm.mlir.addressof @str_0 : !llvm.ptr
%200 = llvm.load %180 : !llvm.ptr -> i64
%201 = llvm.call @printf(%199, %200) vararg(!llvm.func<i32 (ptr, ...)>) : (!llvm.ptr, i64) -> i32
%202 = arith.constant 0 : i32
func.return %202 : i32
}
}