//Sample code used:

#include <algorithm>
#include <cstring>

int main() {
  char array[80];
  memset(array,'r',80);
}

#include <algorithm>
#include <cstring>

int main() {
  char array[80];
  std::fill(array,array+80,'r');
}

//std::fill
main:
    movabs  rdx, 8246779703540740722
    sub rsp, 104
    movabs  rcx, 8246779703540740722
    mov rax, QWORD PTR fs:40
    mov QWORD PTR [rsp+88], rax
    xor eax, eax
    mov QWORD PTR [rsp], rdx
    movabs  rdx, 8246779703540740722
    movabs  rsi, 8246779703540740722
    mov QWORD PTR [rsp+64], rdx
    movabs  rdi, 8246779703540740722
    movabs  r8, 8246779703540740722
    mov QWORD PTR [rsp+8], rcx
    movabs  r9, 8246779703540740722
    movabs  r10, 8246779703540740722
    mov QWORD PTR [rsp+16], rsi
    movabs  r11, 8246779703540740722
    movabs  rcx, 8246779703540740722
    mov QWORD PTR [rsp+24], rdi
    mov QWORD PTR [rsp+32], r8
    mov rdx, QWORD PTR [rsp+88]
    xor rdx, QWORD PTR fs:40
    mov QWORD PTR [rsp+40], r9
    mov QWORD PTR [rsp+48], r10
    mov QWORD PTR [rsp+56], r11
    mov QWORD PTR [rsp+72], rcx
    jne .L5
    add rsp, 104
    ret
.L5:
    call    __stack_chk_fail

//memset
main:
    movabs  rdx, 8246779703540740722
    sub rsp, 104
    movabs  rcx, 8246779703540740722
    mov rax, QWORD PTR fs:40
    mov QWORD PTR [rsp+88], rax
    xor eax, eax
    mov QWORD PTR [rsp], rdx
    movabs  rdx, 8246779703540740722
    movabs  rsi, 8246779703540740722
    mov QWORD PTR [rsp+64], rdx
    movabs  rdi, 8246779703540740722
    movabs  r8, 8246779703540740722
    mov QWORD PTR [rsp+8], rcx
    movabs  r9, 8246779703540740722
    movabs  r10, 8246779703540740722
    mov QWORD PTR [rsp+16], rsi
    movabs  r11, 8246779703540740722
    movabs  rcx, 8246779703540740722
    mov QWORD PTR [rsp+24], rdi
    mov QWORD PTR [rsp+32], r8
    mov rdx, QWORD PTR [rsp+88]
    xor rdx, QWORD PTR fs:40
    mov QWORD PTR [rsp+40], r9
    mov QWORD PTR [rsp+48], r10
    mov QWORD PTR [rsp+56], r11
    mov QWORD PTR [rsp+72], rcx
    jne .L5
    add rsp, 104
    ret
.L5:
    call    __stack_chk_fail