Problem 349

Langton's ant: black cells after 10^18 steps (detect period 104).

View problem on Project Euler

Performance comparison

Flow source

# Project Euler 349
# Langton's ant: black cells after 10^18 steps (detect period 104).

extern {
    function calloc(n: i64, size: i64) -> ptr<void>
    function free(p: ptr<void>) -> void
}

function main() -> i32 {
    let limit: i64 = 1000000000000000000
    let size: i64 = 128
    let grid: ptr<i8> = calloc(size * size, 1)
    if grid == null { return 1 }
    let mut x: i64 = size / 2
    let mut y: i64 = size / 2
    let dx: ptr<i64> = calloc(4, 8)
    let dy: ptr<i64> = calloc(4, 8)
    dx[0] = 0; dx[1] = 1; dx[2] = 0; dx[3] = -1
    dy[0] = 1; dy[1] = 0; dy[2] = -1; dy[3] = 0
    let mut direction: i64 = 0
    let cycle: i64 = 104
    let remainder: i64 = limit % cycle
    let mut count: i64 = 0
    let mut last: i64 = 0
    let last_deltas: ptr<i64> = calloc(64, 8)
    let mut ldc: i64 = 1
    last_deltas[0] = 0
    let stop_if_same: i64 = 10
    let mut steps: i64 = 0
    while steps < limit {
        if steps % cycle == remainder {
            let diff: i64 = count - last
            last_deltas[ldc] = diff
            ldc = ldc + 1
            last = count
            if ldc >= stop_if_same {
                let mut samesame: bool = true
                let mut scan: i64 = ldc - stop_if_same
                while scan < ldc {
                    if last_deltas[scan] != diff {
                        samesame = false
                        break
                    }
                    scan = scan + 1
                }
                if samesame {
                    let remaining: i64 = (limit - steps) / cycle
                    count = count + remaining * diff
                    break
                }
            }
        }
        let pos: i64 = y * size + x
        if grid[pos] == 0 {
            grid[pos] = 1
            count = count + 1
            direction = (direction + 1) % 4
        } else {
            grid[pos] = 0
            count = count - 1
            direction = (direction + 3) % 4
        }
        x = x + dx[direction]
        y = y + dy[direction]
        steps = steps + 1
    }
    printf("%lld\n", count)
    free(grid); free(dx); free(dy); free(last_deltas)
    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; }

int32_t main(void);



int32_t main(void) {
    int64_t limit = 1000000000000000000;
    int64_t size = 128;
    int8_t* grid = (int8_t*)(calloc((size * size), 1));
    if (grid == NULL) {
        return 1;
    }
    int64_t x = FLOW_CHECKED_DIV((size), (2));
    int64_t y = FLOW_CHECKED_DIV((size), (2));
    int64_t* dx = (int64_t*)(calloc(4, 8));
    int64_t* dy = (int64_t*)(calloc(4, 8));
    dx[0] = 0;
    dx[1] = 1;
    dx[2] = 0;
    dx[3] = (-1);
    dy[0] = 1;
    dy[1] = 0;
    dy[2] = (-1);
    dy[3] = 0;
    int64_t direction = 0;
    int64_t cycle = 104;
    int64_t remainder = FLOW_CHECKED_MOD((limit), (cycle));
    int64_t count = 0;
    int64_t last = 0;
    int64_t* last_deltas = (int64_t*)(calloc(64, 8));
    int64_t ldc = 1;
    last_deltas[0] = 0;
    int64_t stop_if_same = 10;
    int64_t steps = 0;
    while (steps < limit) {
        if (FLOW_CHECKED_MOD((steps), (cycle)) == remainder) {
            int64_t diff = (count - last);
            last_deltas[ldc] = diff;
            ldc = (ldc + 1);
            last = count;
            if (ldc >= stop_if_same) {
                bool samesame = 1;
                int64_t scan = (ldc - stop_if_same);
                while (scan < ldc) {
                    if (last_deltas[scan] != diff) {
                        samesame = 0;
                        break;
                    }
                    scan = (scan + 1);
                }
                if (samesame) {
                    int64_t remaining = FLOW_CHECKED_DIV(((limit - steps)), (cycle));
                    count = (count + (remaining * diff));
                    break;
                }
            }
        }
        int64_t pos = ((y * size) + x);
        if (grid[pos] == 0) {
            grid[pos] = 1;
            count = (count + 1);
            direction = FLOW_CHECKED_MOD(((direction + 1)), (4));
        } else {
            grid[pos] = 0;
            count = (count - 1);
            direction = FLOW_CHECKED_MOD(((direction + 3)), (4));
        }
        x = (x + dx[direction]);
        y = (y + dy[direction]);
        steps = (steps + 1);
    }
    printf("%lld\n", count);
    free(grid);
    free(dx);
    free(dy);
    free(last_deltas);
    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 private @calloc(i64, i64) -> !llvm.ptr
  func.func private @free(!llvm.ptr) -> ()
  func.func @main() -> i32 {
    %0 = arith.constant 999999995705032704 : i32
    %1 = arith.extsi %0 : i32 to i64
    %2 = arith.constant 128 : i32
    %3 = arith.extsi %2 : i32 to i64
    %5 = arith.muli %3, %3 : i64
    %6 = arith.constant 1 : i32
    %7 = arith.extsi %6 : i32 to i64
    %4 = func.call @calloc(%5, %7) : (i64, i64) -> !llvm.ptr
    %8 = llvm.mlir.zero : !llvm.ptr
    %9 = llvm.icmp "eq" %4, %8 : !llvm.ptr
    cf.cond_br %9, ^bb0, ^bb1
    ^bb0:
      %10 = arith.constant 1 : i32
      func.return %10 : i32
    ^bb1:
      cf.br ^bb2
    ^bb2:
    %11 = arith.constant 2 : i32
    %13 = arith.extsi %11 : i32 to i64
    %12 = arith.divsi %3, %13 : i64
    %14 = llvm.mlir.constant(1 : i64) : i64
    %15 = llvm.alloca %14 x i64 : (i64) -> !llvm.ptr
    llvm.store %12, %15 : i64, !llvm.ptr
    %16 = arith.constant 2 : i32
    %18 = arith.extsi %16 : i32 to i64
    %17 = arith.divsi %3, %18 : i64
    %19 = llvm.mlir.constant(1 : i64) : i64
    %20 = llvm.alloca %19 x i64 : (i64) -> !llvm.ptr
    llvm.store %17, %20 : i64, !llvm.ptr
    %22 = arith.constant 4 : i32
    %23 = arith.constant 8 : i32
    %24 = arith.extsi %22 : i32 to i64
    %25 = arith.extsi %23 : i32 to i64
    %21 = func.call @calloc(%24, %25) : (i64, i64) -> !llvm.ptr
    %27 = arith.constant 4 : i32
    %28 = arith.constant 8 : i32
    %29 = arith.extsi %27 : i32 to i64
    %30 = arith.extsi %28 : i32 to i64
    %26 = func.call @calloc(%29, %30) : (i64, i64) -> !llvm.ptr
    %31 = arith.constant 0 : i32
    %32 = arith.constant 0 : i32
    %33 = arith.extsi %31 : i32 to i64
    %34 = arith.extsi %32 : i32 to i64
    %35 = llvm.getelementptr %21[%34] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %33, %35 : i64, !llvm.ptr
    %36 = arith.constant 1 : i32
    %37 = arith.constant 1 : i32
    %38 = arith.extsi %36 : i32 to i64
    %39 = arith.extsi %37 : i32 to i64
    %40 = llvm.getelementptr %21[%39] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %38, %40 : i64, !llvm.ptr
    %41 = arith.constant 0 : i32
    %42 = arith.constant 2 : i32
    %43 = arith.extsi %41 : i32 to i64
    %44 = arith.extsi %42 : i32 to i64
    %45 = llvm.getelementptr %21[%44] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %43, %45 : i64, !llvm.ptr
    %46 = arith.constant 1 : i32
    %48 = arith.constant 0 : i32
    %47 = arith.subi %48, %46 : i32
    %49 = arith.constant 3 : i32
    %50 = arith.extsi %47 : i32 to i64
    %51 = arith.extsi %49 : i32 to i64
    %52 = llvm.getelementptr %21[%51] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %50, %52 : i64, !llvm.ptr
    %53 = arith.constant 1 : i32
    %54 = arith.constant 0 : i32
    %55 = arith.extsi %53 : i32 to i64
    %56 = arith.extsi %54 : i32 to i64
    %57 = llvm.getelementptr %26[%56] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %55, %57 : i64, !llvm.ptr
    %58 = arith.constant 0 : i32
    %59 = arith.constant 1 : i32
    %60 = arith.extsi %58 : i32 to i64
    %61 = arith.extsi %59 : i32 to i64
    %62 = llvm.getelementptr %26[%61] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %60, %62 : i64, !llvm.ptr
    %63 = arith.constant 1 : i32
    %65 = arith.constant 0 : i32
    %64 = arith.subi %65, %63 : i32
    %66 = arith.constant 2 : i32
    %67 = arith.extsi %64 : i32 to i64
    %68 = arith.extsi %66 : i32 to i64
    %69 = llvm.getelementptr %26[%68] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %67, %69 : i64, !llvm.ptr
    %70 = arith.constant 0 : i32
    %71 = arith.constant 3 : i32
    %72 = arith.extsi %70 : i32 to i64
    %73 = arith.extsi %71 : i32 to i64
    %74 = llvm.getelementptr %26[%73] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %72, %74 : i64, !llvm.ptr
    %75 = arith.constant 0 : i32
    %76 = arith.extsi %75 : i32 to 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.constant 104 : i32
    %80 = arith.extsi %79 : i32 to i64
    %81 = arith.remsi %1, %80 : i64
    %82 = arith.constant 0 : i32
    %83 = arith.extsi %82 : i32 to i64
    %84 = llvm.mlir.constant(1 : i64) : i64
    %85 = llvm.alloca %84 x i64 : (i64) -> !llvm.ptr
    llvm.store %83, %85 : i64, !llvm.ptr
    %86 = arith.constant 0 : i32
    %87 = arith.extsi %86 : i32 to i64
    %88 = llvm.mlir.constant(1 : i64) : i64
    %89 = llvm.alloca %88 x i64 : (i64) -> !llvm.ptr
    llvm.store %87, %89 : i64, !llvm.ptr
    %91 = arith.constant 64 : i32
    %92 = arith.constant 8 : i32
    %93 = arith.extsi %91 : i32 to i64
    %94 = arith.extsi %92 : i32 to i64
    %90 = func.call @calloc(%93, %94) : (i64, i64) -> !llvm.ptr
    %95 = arith.constant 1 : i32
    %96 = arith.extsi %95 : i32 to i64
    %97 = llvm.mlir.constant(1 : i64) : i64
    %98 = llvm.alloca %97 x i64 : (i64) -> !llvm.ptr
    llvm.store %96, %98 : i64, !llvm.ptr
    %99 = arith.constant 0 : i32
    %100 = arith.constant 0 : i32
    %101 = arith.extsi %99 : i32 to i64
    %102 = arith.extsi %100 : i32 to i64
    %103 = llvm.getelementptr %90[%102] : (!llvm.ptr, i64) -> !llvm.ptr, i64
    llvm.store %101, %103 : i64, !llvm.ptr
    %104 = arith.constant 10 : i32
    %105 = arith.extsi %104 : i32 to i64
    %106 = arith.constant 0 : i32
    %107 = arith.extsi %106 : i32 to i64
    %108 = llvm.mlir.constant(1 : i64) : i64
    %109 = llvm.alloca %108 x i64 : (i64) -> !llvm.ptr
    llvm.store %107, %109 : i64, !llvm.ptr
    cf.br ^bb3
    ^bb3:
    %110 = llvm.load %109 : !llvm.ptr -> i64
    %111 = arith.cmpi slt, %110, %1 : i64
    cf.cond_br %111, ^bb4, ^bb5
    ^bb4:
      %112 = llvm.load %109 : !llvm.ptr -> i64
      %113 = arith.remsi %112, %80 : i64
      %114 = arith.cmpi eq, %113, %81 : i64
      cf.cond_br %114, ^bb6, ^bb7
      ^bb6:
        %115 = llvm.load %85 : !llvm.ptr -> i64
        %116 = llvm.load %89 : !llvm.ptr -> i64
        %117 = arith.subi %115, %116 : i64
        %118 = llvm.load %98 : !llvm.ptr -> i64
        %119 = llvm.getelementptr %90[%118] : (!llvm.ptr, i64) -> !llvm.ptr, i64
        llvm.store %117, %119 : i64, !llvm.ptr
        %120 = llvm.load %98 : !llvm.ptr -> i64
        %121 = arith.constant 1 : i32
        %123 = arith.extsi %121 : i32 to i64
        %122 = arith.addi %120, %123 : i64
        llvm.store %122, %98 : i64, !llvm.ptr
        %124 = llvm.load %85 : !llvm.ptr -> i64
        llvm.store %124, %89 : i64, !llvm.ptr
        %125 = llvm.load %98 : !llvm.ptr -> i64
        %126 = arith.cmpi sge, %125, %105 : i64
        cf.cond_br %126, ^bb9, ^bb10
        ^bb9:
          %127 = arith.constant 1 : i1
          %128 = llvm.mlir.constant(1 : i64) : i64
          %129 = llvm.alloca %128 x i1 : (i64) -> !llvm.ptr
          llvm.store %127, %129 : i1, !llvm.ptr
          %130 = llvm.load %98 : !llvm.ptr -> i64
          %131 = arith.subi %130, %105 : i64
          %132 = llvm.mlir.constant(1 : i64) : i64
          %133 = llvm.alloca %132 x i64 : (i64) -> !llvm.ptr
          llvm.store %131, %133 : i64, !llvm.ptr
          cf.br ^bb12
          ^bb12:
          %134 = llvm.load %133 : !llvm.ptr -> i64
          %135 = llvm.load %98 : !llvm.ptr -> i64
          %136 = arith.cmpi slt, %134, %135 : i64
          cf.cond_br %136, ^bb13, ^bb14
          ^bb13:
            %138 = llvm.load %133 : !llvm.ptr -> i64
            %139 = llvm.getelementptr %90[%138] : (!llvm.ptr, i64) -> !llvm.ptr, i64
            %137 = llvm.load %139 : !llvm.ptr -> i64
            %140 = arith.cmpi ne, %137, %117 : i64
            cf.cond_br %140, ^bb15, ^bb16
            ^bb15:
              %141 = arith.constant 0 : i1
              llvm.store %141, %129 : i1, !llvm.ptr
              cf.br ^bb14
            ^bb16:
              cf.br ^bb17
            ^bb17:
            %142 = llvm.load %133 : !llvm.ptr -> i64
            %143 = arith.constant 1 : i32
            %145 = arith.extsi %143 : i32 to i64
            %144 = arith.addi %142, %145 : i64
            llvm.store %144, %133 : i64, !llvm.ptr
            cf.br ^bb12
          ^bb14:
          %146 = llvm.load %129 : !llvm.ptr -> i1
          cf.cond_br %146, ^bb18, ^bb19
          ^bb18:
            %147 = llvm.load %109 : !llvm.ptr -> i64
            %148 = arith.subi %1, %147 : i64
            %149 = arith.divsi %148, %80 : i64
            %150 = llvm.load %85 : !llvm.ptr -> i64
            %151 = arith.muli %149, %117 : i64
            %152 = arith.addi %150, %151 : i64
            llvm.store %152, %85 : i64, !llvm.ptr
            cf.br ^bb5
          ^bb19:
            cf.br ^bb20
          ^bb20:
          cf.br ^bb11
        ^bb10:
          cf.br ^bb11
        ^bb11:
        cf.br ^bb8
      ^bb7:
        cf.br ^bb8
      ^bb8:
      %153 = llvm.load %20 : !llvm.ptr -> i64
      %154 = arith.muli %153, %3 : i64
      %155 = llvm.load %15 : !llvm.ptr -> i64
      %156 = arith.addi %154, %155 : i64
      %158 = llvm.getelementptr %4[%156] : (!llvm.ptr, i64) -> !llvm.ptr, i8
      %157 = llvm.load %158 : !llvm.ptr -> i8
      %159 = arith.constant 0 : i32
      %161 = arith.extsi %157 : i8 to i32
      %160 = arith.cmpi eq, %161, %159 : i32
      cf.cond_br %160, ^bb21, ^bb22
      ^bb21:
        %162 = arith.constant 1 : i32
        %163 = arith.trunci %162 : i32 to i8
        %164 = llvm.getelementptr %4[%156] : (!llvm.ptr, i64) -> !llvm.ptr, i8
        llvm.store %163, %164 : i8, !llvm.ptr
        %165 = llvm.load %85 : !llvm.ptr -> i64
        %166 = arith.constant 1 : i32
        %168 = arith.extsi %166 : i32 to i64
        %167 = arith.addi %165, %168 : i64
        llvm.store %167, %85 : i64, !llvm.ptr
        %169 = llvm.load %78 : !llvm.ptr -> i64
        %170 = arith.constant 1 : i32
        %172 = arith.extsi %170 : i32 to i64
        %171 = arith.addi %169, %172 : i64
        %173 = arith.constant 4 : i32
        %175 = arith.extsi %173 : i32 to i64
        %174 = arith.remsi %171, %175 : i64
        llvm.store %174, %78 : i64, !llvm.ptr
        cf.br ^bb23
      ^bb22:
        %176 = arith.constant 0 : i32
        %177 = arith.trunci %176 : i32 to i8
        %178 = llvm.getelementptr %4[%156] : (!llvm.ptr, i64) -> !llvm.ptr, i8
        llvm.store %177, %178 : i8, !llvm.ptr
        %179 = llvm.load %85 : !llvm.ptr -> i64
        %180 = arith.constant 1 : i32
        %182 = arith.extsi %180 : i32 to i64
        %181 = arith.subi %179, %182 : i64
        llvm.store %181, %85 : i64, !llvm.ptr
        %183 = llvm.load %78 : !llvm.ptr -> i64
        %184 = arith.constant 3 : i32
        %186 = arith.extsi %184 : i32 to i64
        %185 = arith.addi %183, %186 : i64
        %187 = arith.constant 4 : i32
        %189 = arith.extsi %187 : i32 to i64
        %188 = arith.remsi %185, %189 : i64
        llvm.store %188, %78 : i64, !llvm.ptr
        cf.br ^bb23
      ^bb23:
      %190 = llvm.load %15 : !llvm.ptr -> i64
      %192 = llvm.load %78 : !llvm.ptr -> i64
      %193 = llvm.getelementptr %21[%192] : (!llvm.ptr, i64) -> !llvm.ptr, i64
      %191 = llvm.load %193 : !llvm.ptr -> i64
      %194 = arith.addi %190, %191 : i64
      llvm.store %194, %15 : i64, !llvm.ptr
      %195 = llvm.load %20 : !llvm.ptr -> i64
      %197 = llvm.load %78 : !llvm.ptr -> i64
      %198 = llvm.getelementptr %26[%197] : (!llvm.ptr, i64) -> !llvm.ptr, i64
      %196 = llvm.load %198 : !llvm.ptr -> i64
      %199 = arith.addi %195, %196 : i64
      llvm.store %199, %20 : i64, !llvm.ptr
      %200 = llvm.load %109 : !llvm.ptr -> i64
      %201 = arith.constant 1 : i32
      %203 = arith.extsi %201 : i32 to i64
      %202 = arith.addi %200, %203 : i64
      llvm.store %202, %109 : i64, !llvm.ptr
      cf.br ^bb3
    ^bb5:
    %204 = llvm.mlir.addressof @str_0 : !llvm.ptr
    %205 = llvm.load %85 : !llvm.ptr -> i64
    %206 = llvm.call @printf(%204, %205) vararg(!llvm.func<i32 (ptr, ...)>) : (!llvm.ptr, i64) -> i32
    func.call @free(%4) : (!llvm.ptr) -> ()
    func.call @free(%21) : (!llvm.ptr) -> ()
    func.call @free(%26) : (!llvm.ptr) -> ()
    func.call @free(%90) : (!llvm.ptr) -> ()
    %211 = arith.constant 0 : i32
    func.return %211 : i32
  }
}