toivoh

function code_big_function(n::Int)
    code = [:( $(Symbol("x$k")) = $(Symbol("x$(k-1)")) + 1 ) for k=1:n]
    quote
        let
            function f(x0)
                $(code...)
                return $(Symbol("x$n"))
            end
        end
    end

toivoh

module TestSLP

function rmw!{T}(dest::Ptr{T}, src::Ptr{T})
    s1 = unsafe_load(src, 1)
    s2 = unsafe_load(src, 2)
    d1 = unsafe_load(dest, 1)
    d2 = unsafe_load(dest, 2)
    d1 $= s1
    d2 $= s2
    unsafe_store!(dest, d1, 1)

toivoh

module TestSIMD5

typealias Uint64x2 NTuple{2, Uint64}
function ($)(x::Uint64x2, y::Uint64x2)
    Base.llvmcall("""%3 = xor <2 x i64> %1, %0
                     ret <2 x i64> %3""",
                  Uint64x2, (Uint64x2, Uint64x2), x, y)
end

unsafe_aligned_load(p::Ptr{Uint64}, i::Int) = unsafe_aligned_load(ptradd(p, (i-1)*sizeof(Uint64)*2))

toivoh

module TestSIMD2

# requires Julia 0.4 for llvmcall

typealias Uint64x2 NTuple{2, Uint64}
function ($)(x::Uint64x2, y::Uint64x2)
    Base.llvmcall("""%3 = xor <2 x i64> %1, %0
                     ret <2 x i64> %3""",
                  Uint64x2, (Uint64x2, Uint64x2), x, y)
end

toivoh

module TestSIMD

immutable TypeConst{T} end

function innerloop!{T, M}(dest::Vector{T}, dest_ofs, src::Vector{T}, src_ofs, ::TypeConst{M})
    @simd for i=1:M
        @inbounds dest[i + dest_ofs] $= src[i + src_ofs]
    end            
end

toivoh

#    Copyright (c) 2014: Toivo Henningsson
#
#    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
#
#    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
#
#    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WIT

toivoh

   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "help()" to list help topics
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.0.0+105549818.rb65f
 _/ |\__'_|_|_|\__'_|  |  Commit b65f0478b4 (2012-12-26 20:02:44)
|__/                   |

julia> include("test_show_dispatch.jl")
type error: subtype: expected Type{T<:Top}, got (CompositeKind,{:i0, Int64, #undef, #undef, #undef  …  :vals, Array{Any,1}, :#s176, Int64})

toivoh

is_expr(ex, head::Symbol) = (isa(ex, Expr) && (ex.head == head))
is_expr(ex, head::Symbol, n::Int) = is_expr(ex, head) && length(ex.args) == n

# simple syntax version
macro get!(d, k, default)
    quote
        d, k = $(esc(d)), $(esc(k))
        has(d, k) ? d[k] : (d[k] = $(esc(default)))
    end
end

toivoh

# ---- @sexpr: S-expression to AST conversion ----

is_expr(ex, head::Symbol) = (isa(ex, Expr) && (ex.head == head))
is_expr(ex, head::Symbol, n::Int) = is_expr(ex, head) && length(ex.args) == n

macro sexpr(ex)
    esc(sexpr_to_expr(ex))
end

sexpr_to_expr(ex) = expr(:quote, ex)

toivoh

show_sexpr(ex) = show_sexpr(OUTPUT_STREAM, ex)
show_sexpr(io::IO, ex) = show_sexpr(io, ex, 0)
show_sexpr(io::IO, ex, indent::Int) = show(io, ex)

const sexpr_indent_width = 2

function show_sexpr(io::IO, ex::Expr, indent::Int)
    inner = indent + sexpr_indent_width
    if (ex.head === :block) inter, post = ("\n"*" "^inner, "\n"*" "^indent)
    else                    inter, post = (" ", "")