eira-fransham

fib:
    push rbp
    mov  rbp,             rsp
    sub  rsp,             0x10
    xor  eax,             eax
    cmp  rsi,             0
    sete al
    test eax,             eax
    ; If `rsi` is _not_ zero, then jump to .fib-then
    je   .fib_then

eira-fransham

INPUT:
(module
  (func
    (call $assert-return (call $as-binary-operand) (i32.const 12))
    (call $assert-return (call $break-bare) (i32.const 19))
    (call $assert-return (call $break-value) (i32.const 18))
    (call $assert-return (call $break-repeated) (i32.const 18))
    (call $assert-return (call $break-inner) (i32.const 0x7))
  )
  (func $dummy)

eira-fransham

push rbp                                      | push    rbp
mov  rbp,                 rsp                 | mov     rbp,                 rsp
sub  rsp,                 0x20                | sub     rsp,                 0x10
mov  edx,                 1                   | mov     qword ptr [rsp + 8], rdi
xor  eax,                 eax                 | mov     eax,                 0
cmp  esi,                 2                   | push    rax
setb al                                       | mov     rax,                 qword ptr [rsp + 0x10]
test eax,                 eax                 | push    rax
je   0x2d                                     | pop     rax
jmp  0x8e                                     | pop     rcx

eira-fransham

push    rbp
mov     rbp,                 rsp
sub     rsp,                 0x10
mov     qword ptr [rsp + 8], rdi
mov     eax,                 0
push    rax
mov     rax,                 qword ptr [rsp + 0x10]
push    rax
pop     rax
pop     rcx

eira-fransham

#![feature(nll)]

#[macro_use]
extern crate pollock;
extern crate serde;
#[macro_use]
extern crate serde_derive;

use pollock::*;

eira-fransham

#![feature(nll)]

extern crate pollock;
extern crate serde;
#[macro_use]
extern crate serde_derive;

use pollock::*;

#[derive(Serialize, Deserialize)]

eira-fransham

# callgrind format
version: 1
creator: callgrind-3.13.0
pid: 6359
cmd:  target/release/rustfest-5c3dd55c20998644 --bench
part: 1


desc: I1 cache: 32768 B, 64 B, 8-way associative
desc: D1 cache: 32768 B, 64 B, 8-way associative

eira-fransham

extern crate smallvec;

use smallvec::SmallVec;

struct Printer(usize);

impl Drop for Printer {
  fn drop(&mut self) {
    println!("Dropping {}", self.0);
  }

eira-fransham

libbigint.so`disassemble:
    pushq   %rbp
    movq    %rsp,        %rbp
    pushq   %r15
    pushq   %r14
    pushq   %r13
    pushq   %r12
    pushq   %rbx
    subq    $0x50,       %rsp
    movq    0x10(%rbp),  %r14

eira-fransham

use std::{str, mem, ptr, slice};
use std::ops::Deref;

pub struct CowStr<'a>(CowVec<'a, u8>);

impl<'a> CowStr<'a> {
    #[inline]
    pub fn borrowed(b: &'a str) -> Self {
        CowStr(CowVec::borrowed(b.as_bytes()))
    }