diff --git a/.travis.yml b/.travis.yml
index 078a9249e2f7a..1f45c08d32008 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,7 +40,7 @@ matrix:
             - gfortran-5
     - os: osx
       env: ARCH="x86_64"
-      osx_image: xcode8
+      osx_image: xcode8.3
 cache: ccache
 branches:
   only:
@@ -76,8 +76,8 @@ before_install:
         brew tap staticfloat/julia > /dev/null;
         brew rm --force $(brew deps --HEAD julia);
         brew install -v ccache gcc gmp mpfr pcre2 staticfloat/julia/openblas-julia staticfloat/julia/suite-sparse-julia staticfloat/juliadeps/libgfortran;
-        BUILDOPTS="-j3 USECLANG=1 USECCACHE=1 BINARYBUILDER_TRIPLET=x86_64-apple-darwin14 BINARYBUILDER_LLVM_ASSERTS=1";
-        BUILDOPTS="$BUILDOPTS USE_BINARYBUILDER_LLVM=1 LLVM_CONFIG=$TRAVIS_BUILD_DIR/usr/tools/llvm-config LLVM_SIZE=$TRAVIS_BUILD_DIR/usr/tools/llvm-size";
+        BUILDOPTS="-j3 USECLANG=1 USECCACHE=1 USE_BINARYBUILDER_LLVM=1 USE_BINARYBUILDER_OPENBLAS=1 BINARYBUILDER_LLVM_ASSERTS=1";
+        BUILDOPTS="$BUILDOPTS LLVM_CONFIG=$TRAVIS_BUILD_DIR/usr/tools/llvm-config LLVM_SIZE=$TRAVIS_BUILD_DIR/usr/tools/llvm-size";
         BUILDOPTS="$BUILDOPTS VERBOSE=1 USE_BLAS64=0 SUITESPARSE_INC=-I$(brew --prefix suite-sparse-julia)/include FORCE_ASSERTIONS=1";
         BUILDOPTS="$BUILDOPTS LIBBLAS=-lopenblas LIBBLASNAME=libopenblas LIBLAPACK=-lopenblas LIBLAPACKNAME=libopenblas";
         for lib in SUITESPARSE BLAS LAPACK GMP MPFR LIBUNWIND; do
diff --git a/Make.inc b/Make.inc
index 81ff923156ed8..e9cb2411981e5 100644
--- a/Make.inc
+++ b/Make.inc
@@ -232,11 +232,10 @@ INSTALL_F := $(JULIAHOME)/contrib/install.sh 644
 INSTALL_M := $(JULIAHOME)/contrib/install.sh 755
 
 # BinaryBuilder options
-# TODO: Autodiscover triplet
+USE_BINARYBUILDER_OPENBLAS := 0
 USE_BINARYBUILDER_LLVM := 0
 # Use the Assertions build
 BINARYBUILDER_LLVM_ASSERTS := 0
-BINARYBUILDER_TRIPLET :=
 
 # LLVM Options
 LLVMROOT := $(build_prefix)
diff --git a/base/array.jl b/base/array.jl
index f13c6ee08358e..6f39e525bc6d6 100644
--- a/base/array.jl
+++ b/base/array.jl
@@ -267,7 +267,7 @@ offset `do`. Return `dest`.
 """
 function copyto!(dest::Array{T}, doffs::Integer, src::Array{T}, soffs::Integer, n::Integer) where T
     n == 0 && return dest
-    n > 0 || _throw_argerror(n)
+    n > 0 || _throw_argerror()
     if soffs < 1 || doffs < 1 || soffs+n-1 > length(src) || doffs+n-1 > length(dest)
         throw(BoundsError())
     end
@@ -276,10 +276,11 @@ function copyto!(dest::Array{T}, doffs::Integer, src::Array{T}, soffs::Integer,
 end
 
 # Outlining this because otherwise a catastrophic inference slowdown
-# occurs, see discussion in #27874
-function _throw_argerror(n)
+# occurs, see discussion in #27874.
+# It is also mitigated by using a constant string.
+function _throw_argerror()
     @_noinline_meta
-    throw(ArgumentError(string("tried to copy n=", n, " elements, but n should be nonnegative")))
+    throw(ArgumentError("Number of elements to copy must be nonnegative."))
 end
 
 copyto!(dest::Array{T}, src::Array{T}) where {T} = copyto!(dest, 1, src, 1, length(src))
diff --git a/base/checked.jl b/base/checked.jl
index 9b11e13caf796..c6a77cacadbae 100644
--- a/base/checked.jl
+++ b/base/checked.jl
@@ -87,7 +87,7 @@ function checked_neg(x::T) where T<:Integer
     checked_sub(T(0), x)
 end
 throw_overflowerr_negation(x) = (@_noinline_meta;
-    throw(OverflowError("checked arithmetic: cannot compute -x for x = $x::$(typeof(x))")))
+    throw(OverflowError(Base.invokelatest(string, "checked arithmetic: cannot compute -x for x = ", x, "::", typeof(x)))))
 if BrokenSignedInt != Union{}
 function checked_neg(x::BrokenSignedInt)
     r = -x
@@ -151,7 +151,7 @@ end
 
 
 throw_overflowerr_binaryop(op, x, y) = (@_noinline_meta;
-    throw(OverflowError("$x $op $y overflowed for type $(typeof(x))")))
+    throw(OverflowError(Base.invokelatest(string, x, " ", op, "y", " overflowed for type ", typeof(x)))))
 
 """
     Base.checked_add(x, y)
diff --git a/base/compiler/abstractinterpretation.jl b/base/compiler/abstractinterpretation.jl
index b1fab2f0f4e69..b01ad3a271fca 100644
--- a/base/compiler/abstractinterpretation.jl
+++ b/base/compiler/abstractinterpretation.jl
@@ -405,12 +405,27 @@ function precise_container_type(@nospecialize(typ), vtypes::VarTable, sv::Infere
             end
         end
         return result
-    elseif isa(tti0, DataType) && tti0 <: Tuple
-        if isvatuple(tti0) && length(tti0.parameters) == 1
-            return Any[Vararg{unwrapva(tti0.parameters[1])}]
+    elseif tti0 <: Tuple
+        if isa(tti0, DataType)
+            if isvatuple(tti0) && length(tti0.parameters) == 1
+                return Any[Vararg{unwrapva(tti0.parameters[1])}]
+            else
+                return Any[ p for p in tti0.parameters ]
+            end
+        elseif !isa(tti, DataType)
+            return Any[Vararg{Any}]
         else
-            return Any[ p for p in tti0.parameters ]
+            len = length(tti.parameters)
+            last = tti.parameters[len]
+            va = isvarargtype(last)
+            elts = Any[ fieldtype(tti0, i) for i = 1:len ]
+            if va
+                elts[len] = Vararg{elts[len]}
+            end
+            return elts
         end
+    elseif tti0 === SimpleVector || tti0 === Any
+        return Any[Vararg{Any}]
     elseif tti0 <: Array
         return Any[Vararg{eltype(tti0)}]
     else
diff --git a/base/compiler/ssair/passes.jl b/base/compiler/ssair/passes.jl
index d291e85a661b8..63bd542157659 100644
--- a/base/compiler/ssair/passes.jl
+++ b/base/compiler/ssair/passes.jl
@@ -130,7 +130,7 @@ function simple_walk(compact::IncrementalCompact, @nospecialize(defssa#=::AnySSA
                 return defssa
             end
             if isa(def.val, SSAValue)
-                if isa(defssa, OldSSAValue) && !already_inserted(compact, defssa)
+                if is_old(compact, defssa)
                     defssa = OldSSAValue(def.val.id)
                 else
                     defssa = def.val
@@ -191,7 +191,7 @@ function walk_to_defs(compact::IncrementalCompact, @nospecialize(defssa), @nospe
                 collect(Iterators.filter(1:length(def.edges)) do n
                     isassigned(def.values, n) || return false
                     val = def.values[n]
-                    if isa(defssa, OldSSAValue) && isa(val, SSAValue)
+                    if is_old(compact, defssa) && isa(val, SSAValue)
                         val = OldSSAValue(val.id)
                     end
                     edge_typ = widenconst(compact_exprtype(compact, val))
@@ -201,7 +201,7 @@ function walk_to_defs(compact::IncrementalCompact, @nospecialize(defssa), @nospe
             for n in possible_predecessors
                 pred = def.edges[n]
                 val = def.values[n]
-                if isa(defssa, OldSSAValue) && isa(val, SSAValue)
+                if is_old(compact, defssa) && isa(val, SSAValue)
                     val = OldSSAValue(val.id)
                 end
                 if isa(val, AnySSAValue)
@@ -281,7 +281,7 @@ function lift_leaves(compact::IncrementalCompact, @nospecialize(stmt),
             end
             if is_tuple_call(compact, def) && isa(field, Int) && 1 <= field < length(def.args)
                 lifted = def.args[1+field]
-                if isa(leaf, OldSSAValue) && isa(lifted, SSAValue)
+                if is_old(compact, leaf) && isa(lifted, SSAValue)
                     lifted = OldSSAValue(lifted.id)
                 end
                 if isa(lifted, GlobalRef) || isa(lifted, Expr)
@@ -320,7 +320,7 @@ function lift_leaves(compact::IncrementalCompact, @nospecialize(stmt),
                     compact[leaf] = def
                 end
                 lifted = def.args[1+field]
-                if isa(leaf, OldSSAValue) && isa(lifted, SSAValue)
+                if is_old(compact, leaf) && isa(lifted, SSAValue)
                     lifted = OldSSAValue(lifted.id)
                 end
                 if isa(lifted, GlobalRef) || isa(lifted, Expr)
@@ -339,7 +339,7 @@ function lift_leaves(compact::IncrementalCompact, @nospecialize(stmt),
                     # N.B.: This can be a bit dangerous because it can lead to
                     # infinite loops if we accidentally insert a node just ahead
                     # of where we are
-                    if isa(leaf, OldSSAValue) && (isa(field, Int) || isa(field, Symbol))
+                    if is_old(compact, leaf) && (isa(field, Int) || isa(field, Symbol))
                         (isa(typ, DataType) && (!typ.abstract)) || return nothing
                         @assert !typ.mutable
                         # If there's the potential for an undefref error on access, we cannot insert a getfield
@@ -425,6 +425,12 @@ struct LiftedPhi
     need_argupdate::Bool
 end
 
+function is_old(compact, @nospecialize(old_node_ssa))
+    isa(old_node_ssa, OldSSAValue) &&
+        !is_pending(compact, old_node_ssa) &&
+        !already_inserted(compact, old_node_ssa)
+end
+
 function perform_lifting!(compact::IncrementalCompact,
         visited_phinodes::Vector{Any}, @nospecialize(cache_key),
         lifting_cache::IdDict{Pair{AnySSAValue, Any}, AnySSAValue},
@@ -455,7 +461,7 @@ function perform_lifting!(compact::IncrementalCompact,
             isassigned(old_node.values, i) || continue
             val = old_node.values[i]
             orig_val = val
-            if isa(old_node_ssa, OldSSAValue) && !is_pending(compact, old_node_ssa) && !already_inserted(compact, old_node_ssa) && isa(val, SSAValue)
+            if is_old(compact, old_node_ssa) && isa(val, SSAValue)
                 val = OldSSAValue(val.id)
             end
             if isa(val, Union{NewSSAValue, SSAValue, OldSSAValue})
@@ -688,10 +694,14 @@ function getfield_elim_pass!(ir::IRCode, domtree::DomTree)
         compact[idx] = val === nothing ? nothing : val.x
     end
 
-    # Copy the use count, `finish` may modify it and for our predicate
-    # below we need it consistent with the state of the IR here.
+
+    non_dce_finish!(compact)
+    # Copy the use count, `simple_dce!` may modify it and for our predicate
+    # below we need it consistent with the state of the IR here (after tracking
+    # phi node arguments, but before dce).
     used_ssas = copy(compact.used_ssas)
-    ir = finish(compact)
+    simple_dce!(compact)
+    ir = complete(compact)
     # Now go through any mutable structs and see which ones we can eliminate
     for (idx, (intermediaries, defuse)) in defuses
         intermediaries = collect(intermediaries)
diff --git a/base/compiler/typeinfer.jl b/base/compiler/typeinfer.jl
index ff9273de3cfd5..cdf56df177d09 100644
--- a/base/compiler/typeinfer.jl
+++ b/base/compiler/typeinfer.jl
@@ -633,7 +633,12 @@ end
 
 
 function return_type(@nospecialize(f), @nospecialize(t))
-    params = Params(ccall(:jl_get_tls_world_age, UInt, ()))
+    world = ccall(:jl_get_tls_world_age, UInt, ())
+    return ccall(:jl_call_in_typeinf_world, Any, (Ptr{Ptr{Cvoid}}, Cint), Any[_return_type, f, t, world], 4)
+end
+
+function _return_type(@nospecialize(f), @nospecialize(t), world)
+    params = Params(world)
     rt = Union{}
     if isa(f, Builtin)
         rt = builtin_tfunction(f, Any[t.parameters...], nothing, params)
diff --git a/base/show.jl b/base/show.jl
index 164031b7a5884..2104858483f76 100644
--- a/base/show.jl
+++ b/base/show.jl
@@ -455,14 +455,14 @@ function show_type_name(io::IO, tn::Core.TypeName)
     globname = isdefined(tn, :mt) ? tn.mt.name : nothing
     globfunc = false
     if globname !== nothing
-        globname_str = string(globname)
+        globname_str = string(globname::Symbol)
         if ('#' ∉ globname_str && '@' ∉ globname_str && isdefined(tn, :module) &&
                 isbindingresolved(tn.module, globname) && isdefined(tn.module, globname) &&
                 isconcretetype(tn.wrapper) && isa(getfield(tn.module, globname), tn.wrapper))
             globfunc = true
         end
     end
-    sym = globfunc ? globname : tn.name
+    sym = (globfunc ? globname : tn.name)::Symbol
     if get(io, :compact, false)
         if globfunc
             return print(io, "typeof(", sym, ")")
diff --git a/base/strings/io.jl b/base/strings/io.jl
index 71767cefb52af..7453845211148 100644
--- a/base/strings/io.jl
+++ b/base/strings/io.jl
@@ -105,6 +105,7 @@ end
 
 tostr_sizehint(x) = 8
 tostr_sizehint(x::AbstractString) = lastindex(x)
+tostr_sizehint(x::Union{String,SubString{String}}) = sizeof(x)
 tostr_sizehint(x::Float64) = 20
 tostr_sizehint(x::Float32) = 12
 
diff --git a/base/subarray.jl b/base/subarray.jl
index 2d6f8a709a642..3c3bb89d271f2 100644
--- a/base/subarray.jl
+++ b/base/subarray.jl
@@ -42,7 +42,7 @@ check_parent_index_match(parent, ::NTuple{N, Bool}) where {N} =
 # are inlined
 @inline Base.throw_boundserror(A::SubArray, I) =
     __subarray_throw_boundserror(typeof(A), A.parent, A.indices, A.offset1, A.stride1, I)
-@noinline __subarray_throw_boundserror(T, parent, indices, offset1, stride1, I) =
+@noinline __subarray_throw_boundserror(::Type{T}, parent, indices, offset1, stride1, I) where {T} =
     throw(BoundsError(T(parent, indices, offset1, stride1), I))
 
 # This computes the linear indexing compatibility for a given tuple of indices
diff --git a/contrib/fixup-libgfortran.sh b/contrib/fixup-libgfortran.sh
index a994515d2356d..897c067de6a83 100755
--- a/contrib/fixup-libgfortran.sh
+++ b/contrib/fixup-libgfortran.sh
@@ -2,6 +2,7 @@
 # This file is a part of Julia. License is MIT: https://julialang.org/license
 
 # Run as: fixup-libgfortran.sh [--verbose] <$private_libdir>
+FC=${FC:-gfortran}
 
 # If we're invoked with "--verbose", create a `debug` function that prints stuff out
 if [ "$1" = "--verbose" ] || [ "$1" = "-v" ]; then
@@ -22,7 +23,7 @@ if [ "$UNAME" = "Linux" ]; then
 elif [ "$UNAME" = "Darwin" ]; then
     SHLIB_EXT="dylib"
 else
-    echo "WARNING: Could not autodetect platform type ('uname -s' == $UNAME); assuming Linux" >&2
+    echo "WARNING: Could not autodetect platform type ('uname -s' = $UNAME); assuming Linux" >&2
     UNAME="Linux"
     SHLIB_EXT="so"
 fi
@@ -41,6 +42,20 @@ find_shlib()
     fi
 }
 
+find_shlib_dir()
+{
+    # Usually, on platforms like OSX we get full paths when linking.  However,
+    # if we are inspecting, say, BinaryBuilder-built OpenBLAS libraries, we will
+    # only get something like `@rpath/libgfortran.5.dylib` when inspecting the
+    # libraries.  We can, as a last resort, ask `$FC` directly what the full
+    # filepath for this library is, but only if we don't have a direct path to it:
+    if [ $(dirname "$1") = "@rpath" ]; then
+        dirname "$($FC -print-file-name="$(basename "$1")" 2>/dev/null)"
+    else
+        dirname "$1" 2>/dev/null
+    fi
+}
+
 # First, discover all the places where libgfortran/libgcc is, as well as their true SONAMES
 for lib in lapack blas openblas; do
     for private_libname in ${private_libdir}/lib$lib*.$SHLIB_EXT*; do
@@ -51,10 +66,11 @@ for lib in lapack blas openblas; do
         LIBQUADMATH_PATH=$(find_shlib "$private_libname" libquadmath)
 
         # Take the directories, add them onto LIBGFORTRAN_DIRS, which we use to
-        # search for these libraries in the future.
-        LIBGFORTRAN_DIRS="$LIBGFORTRAN_DIRS $(dirname $LIBGFORTRAN_PATH 2>/dev/null)"
-        LIBGFORTRAN_DIRS="$LIBGFORTRAN_DIRS $(dirname $LIBGCC_PATH 2>/dev/null)"
-        LIBGFORTRAN_DIRS="$LIBGFORTRAN_DIRS $(dirname $LIBQUADMATH_PATH 2>/dev/null)"
+        # search for these libraries in the future.  If there is no directory, try
+        # asking `$FC` where such a file could be found.
+        LIBGFORTRAN_DIRS="$LIBGFORTRAN_DIRS $(find_shlib_dir $LIBGFORTRAN_PATH)"
+        LIBGFORTRAN_DIRS="$LIBGFORTRAN_DIRS $(find_shlib_dir $LIBGCC_PATH)"
+        LIBGFORTRAN_DIRS="$LIBGFORTRAN_DIRS $(find_shlib_dir $LIBQUADMATH_PATH)"
 
         # Save the SONAMES
         LIBGFORTRAN_SONAMES="$LIBGFORTRAN_SONAMES $(basename "$LIBGFORTRAN_PATH")"
diff --git a/contrib/normalize_triplet.py b/contrib/normalize_triplet.py
new file mode 100755
index 0000000000000..8ac7e2553c291
--- /dev/null
+++ b/contrib/normalize_triplet.py
@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+
+import re, sys
+
+# This script designed to mimick `src/PlatformNames.jl` in `BinaryProvider.jl`, which has
+# a method `platform_key_abi()` to parse uname-like output into something standarized.
+
+if len(sys.argv) < 2:
+    print("Usage: %s <host triplet> [<gcc version>]")
+    sys.exit(1)
+
+arch_mapping = {
+    'x86_64': '(x86_|amd)64',
+    'i686': "i\\d86",
+    'aarch64': "aarch64",
+    'arm': "arm(v7l)?",
+    'powerpc64le': "p(ower)?pc64le",
+}
+platform_mapping = {
+    'darwin': "-apple-darwin[\\d\\.]*",
+    'freebsd': "-(.*-)?freebsd[\\d\\.]*",
+    'windows': "-w64-mingw32",
+    'linux': "-(.*-)?linux",
+}
+libc_mapping = {
+    'blank_libc': "",
+    'gnu': "-gnu",
+    'musl': "-musl",
+}
+call_abi_mapping = {
+    'blank_call_abi': "",
+    'eabihf': "eabihf",
+}
+gcc_version_mapping = {
+    'blank_gcc': "",
+    'gcc4': "-gcc4",
+    'gcc7': "-gcc7",
+    'gcc8': "-gcc8",
+}
+cxx_abi_mapping = {
+    'blank_cxx_abi': "",
+    'cxx03': "-cxx03",
+    'cxx11': "-cxx11",
+}
+
+# Helper function to collapse dictionary of mappings down into a regex of
+# named capture groups joined by "|" operators
+c = lambda mapping: "("+"|".join(["(?P<%s>%s)"%(k,v) for (k, v) in mapping.items()]) + ")"
+mondo_regex = re.compile(
+    "^"+
+    c(arch_mapping)+
+    c(platform_mapping)+
+    c(libc_mapping)+
+    c(call_abi_mapping)+
+    c(gcc_version_mapping)+
+    c(cxx_abi_mapping)+
+    "$"
+)
+
+# Apply our mondo regex to our input:
+m = mondo_regex.match(sys.argv[1])
+if m is None:
+    print("ERROR: Unmatchable platform string '%s'!"%(sys.argv[1]))
+    sys.exit(1)
+
+# Helper function to find the single named field within the giant regex
+# that is not `nothing` for each mapping we give it.
+def get_field(m, mapping):
+    g = m.groupdict()
+    for k in mapping:
+        if g[k] is not None:
+            return k
+
+arch = get_field(m, arch_mapping)
+platform = get_field(m, platform_mapping)
+libc = get_field(m, libc_mapping)
+call_abi = get_field(m, call_abi_mapping)
+gcc_version = get_field(m, gcc_version_mapping)
+cxx_abi = get_field(m, cxx_abi_mapping)
+
+# The default libc on Linux is glibc
+if platform == "linux" and libc == "blank_libc":
+    libc = "gnu"
+
+def r(x):
+    x = x.replace("blank_call_abi", "")
+    x = x.replace("blank_gcc", "")
+    x = x.replace("blank_cxx_abi", "")
+    x = x.replace("blank_libc", "")
+    return x
+
+def p(x):
+    # These contain characters that can't be easily represented as
+    # capture group names, unfortunately:
+    os_remapping = {
+        'darwin': 'apple-darwin14',
+        'windows': 'w64-mingw32',
+        'freebsd': 'unknown-freebsd11.1',
+    }
+    x = r(x)
+    if x:
+        for k in os_remapping:
+            x = x.replace(k, os_remapping[k])
+        return '-' + x
+    return x
+
+# If the user passes in a GCC version (like 8.2.0) use that to force a
+# "-gcc8" tag at the end of the triplet, but only if it has otherwise
+# not been specified
+if gcc_version == "blank_gcc":
+    if len(sys.argv) == 3:
+        gcc_version = {
+            "4": "gcc4",
+            "5": "gcc4",
+            "6": "gcc4",
+            "7": "gcc7",
+            "8": "gcc8",
+        }[sys.argv[2][0]]
+
+
+print(arch+p(platform)+p(libc)+r(call_abi)+p(gcc_version)+p(cxx_abi))
+
+# Testing suite:
+# triplets="i686-w64-mingw32 x86_64-pc-linux-musl arm-linux-musleabihf x86_64-linux-gnu arm-linux-gnueabihf x86_64-apple-darwin14 x86_64-unknown-freebsd11.1"
+# for t in $triplets; do
+#     if [[ $(./normalize_triplet.py "$t") != "$t" ]]; then
+#         echo "ERROR: Failed test on $t"
+#     fi
+# done
diff --git a/contrib/refresh_bb_tarballs.sh b/contrib/refresh_bb_tarballs.sh
new file mode 100755
index 0000000000000..9aac101b68e7d
--- /dev/null
+++ b/contrib/refresh_bb_tarballs.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+# Get this list via:
+#    using BinaryBuilder
+#    print("TRIPLETS=\"$(join(triplet.(BinaryBuilder.supported_platforms()), " "))\"")
+TRIPLETS="i686-linux-gnu x86_64-linux-gnu aarch64-linux-gnu arm-linux-gnueabihf powerpc64le-linux-gnu i686-linux-musl x86_64-linux-musl aarch64-linux-musl arm-linux-musleabihf x86_64-apple-darwin14 x86_64-unknown-freebsd11.1 i686-w64-mingw32 x86_64-w64-mingw32"
+
+# These are the projects currently using BinaryBuilder; both GCC-expanded and non-GCC-expanded:
+BB_PROJECTS="llvm"
+BB_GCC_EXPANDED_PROJECTS="openblas"
+
+# Get "contrib/" directory path
+CONTRIB_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+
+set -x
+# For each triplet and each project, download the BB tarball and save its hash:
+for triplet in ${TRIPLETS}; do
+	for proj in ${BB_PROJECTS}; do
+		PROJ="$(echo ${proj} | tr [a-z] [A-Z])"
+        make -C "${CONTRIB_DIR}/../deps" USE_BINARYBUILDER_${PROJ}=1 ${PROJ}_BB_TRIPLET=${triplet} distclean-${proj}
+		make -C "${CONTRIB_DIR}/../deps" USE_BINARYBUILDER_${PROJ}=1 ${PROJ}_BB_TRIPLET=${triplet} compile-${proj}
+	done
+
+    for proj in ${BB_GCC_EXPANDED_PROJECTS}; do
+		PROJ="$(echo ${proj} | tr [a-z] [A-Z])"
+        for gcc in gcc4 gcc7 gcc8; do
+		    make -C "${CONTRIB_DIR}/../deps" USE_BINARYBUILDER_${PROJ}=1 ${PROJ}_BB_TRIPLET=${triplet}-${gcc} distclean-${proj}
+		    make -C "${CONTRIB_DIR}/../deps" USE_BINARYBUILDER_${PROJ}=1 ${PROJ}_BB_TRIPLET=${triplet}-${gcc} compile-${proj}
+        done
+    done
+done
diff --git a/contrib/windows/appveyor_build.sh b/contrib/windows/appveyor_build.sh
index fa29774a4e63b..082d98c17d9b8 100755
--- a/contrib/windows/appveyor_build.sh
+++ b/contrib/windows/appveyor_build.sh
@@ -45,7 +45,6 @@ if [ "$ARCH" = x86_64 ]; then
   echo 'USE_BLAS64 = 1' >> Make.user
   echo 'LIBBLAS = -L$(JULIAHOME)/usr/bin -lopenblas64_' >> Make.user
   echo 'LIBBLASNAME = libopenblas64_' >> Make.user
-  echo 'BINARYBUILDER_TRIPLET = x86_64-w64-mingw32' >> Make.user
 else
   bits=32
   archsuffix=86
@@ -53,7 +52,6 @@ else
   echo "override MARCH = pentium4" >> Make.user
   echo 'LIBBLAS = -L$(JULIAHOME)/usr/bin -lopenblas' >> Make.user
   echo 'LIBBLASNAME = libopenblas' >> Make.user
-  echo 'BINARYBUILDER_TRIPLET = i686-w64-mingw32' >> Make.user
 fi
 echo "override JULIA_CPU_TARGET=generic;native" >> Make.user
 
@@ -198,8 +196,9 @@ if [ -n "$USEMSVC" ]; then
 else
   # Use BinaryBuilder
   echo 'USE_BINARYBUILDER_LLVM = 1' >> Make.user
+  echo 'USE_BINARYBUILDER_OPENBLAS = 1' >> Make.user
   echo 'BINARYBUILDER_LLVM_ASSERTS = 1' >> Make.user
-  echo 'override DEP_LIBS += llvm openlibm' >> Make.user
+  echo 'override DEP_LIBS += llvm openlibm openblas' >> Make.user
   export CCACHE_DIR=/cygdrive/c/ccache
   echo 'USECCACHE=1' >> Make.user
   make check-whitespace
diff --git a/deps/Makefile b/deps/Makefile
index a759218f6ca03..ba0bb685181db 100644
--- a/deps/Makefile
+++ b/deps/Makefile
@@ -12,6 +12,7 @@ include $(SRCDIR)/Versions.make
 include $(JULIAHOME)/Make.inc
 include $(SRCDIR)/tools/common.mk
 include $(SRCDIR)/tools/git-external.mk
+include $(SRCDIR)/tools/bb-install.mk
 
 # Special comments:
 #
diff --git a/deps/blas.mk b/deps/blas.mk
index c025d4ac26e39..147a18b9bf9c8 100644
--- a/deps/blas.mk
+++ b/deps/blas.mk
@@ -92,8 +92,9 @@ endif
 # Do not overwrite the "-j" flag
 OPENBLAS_BUILD_OPTS += MAKE_NB_JOBS=0
 
+ifneq ($(USE_BINARYBUILDER_OPENBLAS), 1)
+
 $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/build-configured: $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/source-extracted
-	perl -i -ple 's/^\s*(EXTRALIB\s*\+=\s*-lSystemStubs)\s*$$/# $$1/g' $(dir $<)/Makefile.system
 	echo 1 > $@
 
 $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/build-compiled: $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/build-configured
@@ -194,3 +195,21 @@ configure-lapack: extract-lapack
 compile-lapack: $(BUILDDIR)/lapack-$(LAPACK_VER)/build-compiled
 fastcheck-lapack: check-lapack
 check-lapack: $(BUILDDIR)/lapack-$(LAPACK_VER)/build-checked
+
+else # USE_BINARYBUILDER_OPENBLAS
+
+
+OPENBLAS_BB_URL_BASE := https://github.com/JuliaPackaging/Yggdrasil/releases/download/OpenBLAS-v$(OPENBLAS_VER)-$(OPENBLAS_BB_REL)
+OPENBLAS_BB_NAME := OpenBLAS.v$(OPENBLAS_VER)-$(OPENBLAS_BB_REL)
+
+$(eval $(call bb-install,openblas,OPENBLAS,true))
+get-lapack: get-openblas
+extract-lapack: extract-openblas
+configure-lapack: configure-openblas
+compile-lapack: compile-openblas
+fastcheck-lapack: fastcheck-openblas
+check-lapack: check-openblas
+clean-lapack: clean-openblas
+distclean-lapack: distclean-openblas
+install-lapack: install-openblas
+endif
diff --git a/deps/checksums/LLVM.v6.0.1.aarch64-linux-gnu.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.aarch64-linux-gnu.tar.gz/md5
new file mode 100644
index 0000000000000..27d3b973b20a9
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.aarch64-linux-gnu.tar.gz/md5
@@ -0,0 +1 @@
+46152d2b14fd1a9b052e0dcf341fdc60
diff --git a/deps/checksums/LLVM.v6.0.1.aarch64-linux-gnu.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.aarch64-linux-gnu.tar.gz/sha512
new file mode 100644
index 0000000000000..21a1fea1b3b80
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.aarch64-linux-gnu.tar.gz/sha512
@@ -0,0 +1 @@
+0d0f0a2331d5c4fe6b0b81ce1d03df73faa418308b6bb59a3a663d398bb33f95a03a882d2abe1f962c9dd58f063ab8f6d571a3e9df1951ede2b6594fdb1e34b9
diff --git a/deps/checksums/LLVM.v6.0.1.arm-linux-gnueabihf.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.arm-linux-gnueabihf.tar.gz/md5
new file mode 100644
index 0000000000000..9bafee5a23dce
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.arm-linux-gnueabihf.tar.gz/md5
@@ -0,0 +1 @@
+4969025231930de85f04ba2fcb15589a
diff --git a/deps/checksums/LLVM.v6.0.1.arm-linux-gnueabihf.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.arm-linux-gnueabihf.tar.gz/sha512
new file mode 100644
index 0000000000000..a4d47733d6f9f
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.arm-linux-gnueabihf.tar.gz/sha512
@@ -0,0 +1 @@
+ee1df591b443e75a6359f1ee72635925a60f1fde2a21c62f818d7eaedff4e8aacfef16a18e417f29ee02f3a5e972dd59a25bcea8b4822efb688ce18a744e24a5
diff --git a/deps/checksums/LLVM.v6.0.1.i686-linux-gnu.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.i686-linux-gnu.tar.gz/md5
new file mode 100644
index 0000000000000..3702585999c90
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.i686-linux-gnu.tar.gz/md5
@@ -0,0 +1 @@
+8dbfc95c4b69b3a6dee154d73865fff8
diff --git a/deps/checksums/LLVM.v6.0.1.i686-linux-gnu.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.i686-linux-gnu.tar.gz/sha512
new file mode 100644
index 0000000000000..43632266302d1
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.i686-linux-gnu.tar.gz/sha512
@@ -0,0 +1 @@
+6cc8bb7d76c4d606f1b02d99d81d320c5498fa851bbaac284162ac9306c5e8b10db43f0411c0c0b6e778bbb88bd86ce33dbc4ff1bd74bc2610514a536af367b4
diff --git a/deps/checksums/LLVM.v6.0.1.i686-w64-mingw32.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.i686-w64-mingw32.tar.gz/md5
new file mode 100644
index 0000000000000..069cae96b15f5
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.i686-w64-mingw32.tar.gz/md5
@@ -0,0 +1 @@
+20ef707d38a3ea744cc5748170c09dad
diff --git a/deps/checksums/LLVM.v6.0.1.i686-w64-mingw32.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.i686-w64-mingw32.tar.gz/sha512
new file mode 100644
index 0000000000000..cad16a805c30e
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.i686-w64-mingw32.tar.gz/sha512
@@ -0,0 +1 @@
+84343663f17b6aeea6114478c35741b509ff696e6d042d8666aa52adc9ed17f64d90823123be7eaef367dacf34daf4466c83e662d2b5aa9046e950d1b611f831
diff --git a/deps/checksums/LLVM.v6.0.1.powerpc64le-linux-gnu.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.powerpc64le-linux-gnu.tar.gz/md5
new file mode 100644
index 0000000000000..4b8a47a1d79ed
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.powerpc64le-linux-gnu.tar.gz/md5
@@ -0,0 +1 @@
+19afaeb0632a880777b88482f69ccdfc
diff --git a/deps/checksums/LLVM.v6.0.1.powerpc64le-linux-gnu.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.powerpc64le-linux-gnu.tar.gz/sha512
new file mode 100644
index 0000000000000..c1183ce6d3b31
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.powerpc64le-linux-gnu.tar.gz/sha512
@@ -0,0 +1 @@
+3ecd22371aa4bb24b854467c40fa72d25e2e9d2f9e9b684b2d541d6003a151a763998b1a1171636207850f3f4da4656a4c62a4d7bc065d055b86f6380874e430
diff --git a/deps/checksums/LLVM.v6.0.1.x86_64-apple-darwin14.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.x86_64-apple-darwin14.tar.gz/md5
new file mode 100644
index 0000000000000..657e760ebe3df
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.x86_64-apple-darwin14.tar.gz/md5
@@ -0,0 +1 @@
+fba99debe20aa1a131f61c539cf66b73
diff --git a/deps/checksums/LLVM.v6.0.1.x86_64-apple-darwin14.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.x86_64-apple-darwin14.tar.gz/sha512
new file mode 100644
index 0000000000000..484bc27299e2e
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.x86_64-apple-darwin14.tar.gz/sha512
@@ -0,0 +1 @@
+efc19110cd4b36a77249b20fb31b5b35cea0c0932d9ae8bb279064d93ead5869b608a27146a5f08e0aedde913bfa3435758e0a60b6e79087e3fbc2f61c7801ba
diff --git a/deps/checksums/LLVM.v6.0.1.x86_64-linux-gnu.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.x86_64-linux-gnu.tar.gz/md5
new file mode 100644
index 0000000000000..8a99d684df419
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.x86_64-linux-gnu.tar.gz/md5
@@ -0,0 +1 @@
+287274fe536cb5b241d1fd84be23b874
diff --git a/deps/checksums/LLVM.v6.0.1.x86_64-linux-gnu.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.x86_64-linux-gnu.tar.gz/sha512
new file mode 100644
index 0000000000000..851222926ac37
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.x86_64-linux-gnu.tar.gz/sha512
@@ -0,0 +1 @@
+9d1419e594c88b9ac4c64745a79292e8a83d3e1b21b65a24bb8531e19b5044d178b975acefe67a71b468282ffebac6a906213a4f7345d9e111c92441fd9b674e
diff --git a/deps/checksums/LLVM.v6.0.1.x86_64-w64-mingw32.tar.gz/md5 b/deps/checksums/LLVM.v6.0.1.x86_64-w64-mingw32.tar.gz/md5
new file mode 100644
index 0000000000000..0230bce662d87
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.x86_64-w64-mingw32.tar.gz/md5
@@ -0,0 +1 @@
+f1c51ca218daf247a4119dfa68105ec5
diff --git a/deps/checksums/LLVM.v6.0.1.x86_64-w64-mingw32.tar.gz/sha512 b/deps/checksums/LLVM.v6.0.1.x86_64-w64-mingw32.tar.gz/sha512
new file mode 100644
index 0000000000000..6194e1f96dd77
--- /dev/null
+++ b/deps/checksums/LLVM.v6.0.1.x86_64-w64-mingw32.tar.gz/sha512
@@ -0,0 +1 @@
+355e10041f4827bcc3409312cc0d069c10d731b91c3afaf9905f72b321818102bfab7032340282a11e0ddb4b946fb8aff5c874b9f884a856e3743b394ad601b5
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..792f513b4167d
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+f088cf15546c4eedba5209b72a9f9ac5
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..c267d5a7ede11
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+7e43fa526bc31793a2b2a5c289cd8676741c01f2c5403da5da010dc057d8327dba46bbd6bbde6543d110f4c29529f344ed60c6648e8f0860e29b97b02b1900ec
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..c5bd2ae1f68df
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+92628223024ec50dd3a4f9951a519627
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..fb2ec47413c2e
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+83a3c1e457d1b3a5014171bfeb773cd6c9abbe0677f8825565c4b7dfe2c0006fa98432c9603fce65c0bfa303abfa1a5808215d83de0ce25cf82803c89ed090a7
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..1cce6f1bdc23e
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+311db7786512fd6d10d894aacf34585c
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..96fbf57bb0d07
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-gnu-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..d02384e04ba5f
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+8a57c45906f45e3e23f45ad15342b86f
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..4c67392f1a146
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..94b0a7869ca16
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+784b3804c06102a2a5e921045128141d
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..32b29be1c51b3
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc7.tar.gz/sha512
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..f1609510e419c
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc8.tar.gz/md5
@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..ab61a60182ca4
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.aarch64-linux-musl-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..807bf5843ec31
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc4.tar.gz/md5
@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..cb93ab0a43f0d
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+++ b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..e6aa6406a6588
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@@ -0,0 +1 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..2644cb0868c61
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+++ b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc7.tar.gz/sha512
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diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.arm-linux-gnueabihf-gcc8.tar.gz/md5
new file mode 100644
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+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+cf06a7c6dbe8e72f7faf0e8b8dc45b5b
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..729ca02670b8a
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+ee6c8d7ab063151cc31384c8b5aac09930e43ad47eaf88ea6becc3fe63b45502979b2510df9c64866e2fe843b6c996b6e8f6c580557765262f48ddf05711ac77
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..a18e2bfcd872a
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+dd83850d3dccaf8a86c1dc2c92bd2722
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..5aa3cbcd98e5c
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+f09ec01d77dd362afce2d801b07bbad3fd7bf4968f3675f7da199f6e36641fa4a1f39e0efdd29811f38af41e084a06999e183a5e9d8dd6b19ccc574009bbd56a
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..9c9dae5cf3eed
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+77dcaa22914d8a83bb430fa8da8f0e7d
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..01490f443b11f
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-gnu-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
+b2b9141ca3ed0ffc7e6b65b6e066d7c18fd9d2db4cde0ffdf3ad4dfa6d6c6c2a0d58986e611d6628e36644f3fb50a844aac9a8b5aa2a70e29a26005b019a2592
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..dfd30fccb742d
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+21124a1f217460744ef6613d1227da03
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..1d74b2061dbb1
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+fddebd7bbd1e67e1ce3fb9887b2bfbdba53452ab445d25a718d6369a9d91957b45fbca24f246d2823bfcf51a1aa8f9bc3530f43cf66d7915e01da8810041342d
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..d73728859785f
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+a5203a3d0101c0f8af922ca4d9e9f63d
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..2b3a6f1a7dbae
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+209107bb4d61494a90f7efecfaeb2074183e1f0ca4b28e6caf1bd87fd356ba7f82ba4ad34e9e34a27669ee55f9df38bb831bcc9c3ca3f4f45aacc1d1747cd2b5
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..8835978052e1b
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+25b669075a95cdaf89f15970125d1f61
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..0f4bdbdb92d75
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-linux-musl-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
+62dcd6e02b4d175eb2cf4a66fbd0bdc53b42e5cf7d710b999cf82cefe96abffe017b7e02821ea9f8da610d64a671414b92b8ae66750c0d828573f0c30161b223
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..35fc9d28191e7
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+6f18d278fde2b975a87eb4bc4713535a
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..565dd9928a980
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+6fed03c459cf4eb0237d838da1e0dfb2f57d6f13a345e74a4e7bdd0f11ef487646d00c1741a8965a2a05abdf61b4ed517a1bf955e5f8a93b590ed7824543d5da
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..c2c8e742da8da
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+4adce6ef2ba3b74ae180302d511144de
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..0608e8a46d6fc
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+ca43770bbb021a0ffb2847bf45fbaa4d9b8fff78bc201094adf4dac1df4e5db52eee2646155c415fc9b5a0e419426f335b246c90c193c423cce86def172b034f
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..e228b6bb332db
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+e88ac7a195ddb48f71ecd13d91e62cf0
diff --git a/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..0ef69f1f9b025
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.3-0.x86_64-w64-mingw32-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
+0a73eec901c3470c354468e0b961325eda1a1515dcbe9f25528856390eecf21f81fec37def9f9e1661ec84db1a4fa782a4607d16805661c743bd978050f82d6a
diff --git a/deps/llvm.mk b/deps/llvm.mk
index bfef4d51abdec..c516b577f6269 100644
--- a/deps/llvm.mk
+++ b/deps/llvm.mk
@@ -513,37 +513,12 @@ ifeq ($(USE_POLLY),1)
 endif
 endif
 else # USE_BINARYBUILDER_LLVM
-LLVM_BB_URL_BASE := https://github.com/staticfloat/LLVMBuilder/releases/download
+LLVM_BB_URL_BASE := https://github.com/staticfloat/LLVMBuilder/releases/download/v$(LLVM_VER)-$(LLVM_BB_REL)
 ifneq ($(BINARYBUILDER_LLVM_ASSERTS), 1)
-LLVM_BB_NAME := LLVM
+LLVM_BB_NAME := LLVM.v$(LLVM_VER)
 else
-LLVM_BB_NAME := LLVM.asserts
+LLVM_BB_NAME := LLVM.asserts.v$(LLVM_VER)
 endif
-LLVM_BB_NAME := $(LLVM_BB_NAME).v$(LLVM_VER)
-LLVM_BB_URL := $(LLVM_BB_URL_BASE)/v$(LLVM_VER)-$(LLVM_BB_REL)/$(LLVM_BB_NAME).$(BINARYBUILDER_TRIPLET).tar.gz
 
-
-$(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL):
-	mkdir -p $@
-
-$(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL)/LLVM.$(BINARYBUILDER_TRIPLET).tar.gz: | $(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL)
-	$(JLDOWNLOAD) $@ $(LLVM_BB_URL)
-
-$(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL)/build-compiled: | $(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL)/LLVM.$(BINARYBUILDER_TRIPLET).tar.gz
-	echo 1 > $@
-
-$(eval $(call staged-install,llvm,llvm-$$(LLVM_VER)-$$(LLVM_BB_REL),,,,))
-
-#Override provision of stage tarball
-$(build_staging)/llvm-$(LLVM_VER)-$(LLVM_BB_REL).tgz: $(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL)/LLVM.$(BINARYBUILDER_TRIPLET).tar.gz | $(build_staging)
-	cp $< $@
-
-clean-llvm:
-distclean-llvm:
-get-llvm:  $(BUILDDIR)/llvm-$(LLVM_VER)-$(LLVM_BB_REL)/LLVM.$(BINARYBUILDER_TRIPLET).tar.gz
-extract-llvm:
-configure-llvm:
-compile-llvm:
-fastcheck-llvm:
-check-llvm:
+$(eval $(call bb-install,llvm,LLVM,false))
 endif # USE_BINARYBUILDER_LLVM
diff --git a/deps/openblas.version b/deps/openblas.version
index fd259abbf7dc4..889bae7c4c860 100644
--- a/deps/openblas.version
+++ b/deps/openblas.version
@@ -1,2 +1,4 @@
 OPENBLAS_BRANCH=v0.3.3
 OPENBLAS_SHA1=fd8d1868a126bb9f12bbc43b36ee30d1ba943fbb
+OPENBLAS_VER=0.3.3
+OPENBLAS_BB_REL=0
diff --git a/deps/tools/bb-install.mk b/deps/tools/bb-install.mk
new file mode 100644
index 0000000000000..24e3e7232d4d8
--- /dev/null
+++ b/deps/tools/bb-install.mk
@@ -0,0 +1,42 @@
+define bb-install
+# If the user has signified that this is a GCC-multiversioned tarball, then generate the proper tarball
+ifeq ($(3),true)
+$(2)_BB_TRIPLET := $(shell python $(call cygpath_w,$(JULIAHOME)/contrib/normalize_triplet.py) $(or $(XC_HOST),$(XC_HOST),$(BUILD_MACHINE)) "$(lastword $(shell $(FC) --version | head -1))")
+else
+$(2)_BB_TRIPLET := $(shell python $(call cygpath_w,$(JULIAHOME)/contrib/normalize_triplet.py) $(or $(XC_HOST),$(XC_HOST),$(BUILD_MACHINE)))
+endif
+$(2)_BB_URL := $$($(2)_BB_URL_BASE)/$$($(2)_BB_NAME).$$($(2)_BB_TRIPLET).tar.gz
+$(2)_BB_BASENAME := $$(shell basename $$($(2)_BB_URL))
+
+$$(BUILDDIR)/$$($(2)_BB_NAME):
+	mkdir -p $$@
+
+$$(SRCCACHE)/$$($(2)_BB_BASENAME): | $$(SRCCACHE)
+	$$(JLDOWNLOAD) $$@ $$($(2)_BB_URL)
+
+$$(BUILDDIR)/$$($(2)_BB_NAME)/build-compiled: $$(BUILDDIR)/$$($(2)_BB_NAME) | $$(SRCCACHE)/$$($(2)_BB_BASENAME)
+	$$(JLCHECKSUM) $$(SRCCACHE)/$$($(2)_BB_BASENAME)
+	echo 1 > $$@
+
+$$(eval $$(call staged-install,$(1),$$($(2)_BB_NAME),,,,))
+
+#Override provision of stage tarball
+$$(build_staging)/$$($(2)_BB_NAME).tgz: $$(SRCCACHE)/$$($(2)_BB_BASENAME) | $$(build_staging)
+	cp $$< $$@
+
+clean-bb-$(1):
+	rm -f $$(build_staging)/$$($(2)_BB_BASENAME)
+	rm -f $$(BUILDDIR)/$$($(2)_BB_NAME)/build-compiled
+
+clean-$(1): clean-bb-$(1)
+distclean-$(1): clean-bb-$(1)
+get-$(1): $$(SRCCACHE)/$$($(2)_BB_BASENAME)
+extract-$(1):
+configure-$(1):
+compile-$(1): $$(BUILDDIR)/$$($(2)_BB_NAME)/build-compiled
+install-$(1): compile-$(1)
+fastcheck-$(1):
+check-$(1):
+
+.PHONY: clean-bb-$(1)
+endef
diff --git a/src/gf.c b/src/gf.c
index 4c8ae077192c1..78e9bfa40e758 100644
--- a/src/gf.c
+++ b/src/gf.c
@@ -300,6 +300,16 @@ jl_code_info_t *jl_type_infer(jl_method_instance_t **pli JL_ROOTS_TEMPORARILY, s
     return src;
 }
 
+JL_DLLEXPORT jl_value_t *jl_call_in_typeinf_world(jl_value_t **args, int nargs)
+{
+    jl_ptls_t ptls = jl_get_ptls_states();
+    size_t last_age = ptls->world_age;
+    ptls->world_age = jl_typeinf_world;
+    jl_value_t *ret = jl_apply(args, nargs);
+    ptls->world_age = last_age;
+    return ret;
+}
+
 int jl_is_rettype_inferred(jl_method_instance_t *li) JL_NOTSAFEPOINT
 {
     if (!li->inferred)
diff --git a/stdlib/Distributed/src/managers.jl b/stdlib/Distributed/src/managers.jl
index 3bc838750ab71..c782279788a13 100644
--- a/stdlib/Distributed/src/managers.jl
+++ b/stdlib/Distributed/src/managers.jl
@@ -373,7 +373,7 @@ manage
 struct DefaultClusterManager <: ClusterManager
 end
 
-const tunnel_hosts_map = Dict{AbstractString, Semaphore}()
+const tunnel_hosts_map = Dict{String, Semaphore}()
 
 """
     connect(manager::ClusterManager, pid::Int, config::WorkerConfig) -> (instrm::IO, outstrm::IO)
diff --git a/test/compiler/irpasses.jl b/test/compiler/irpasses.jl
index 77f75958fd837..12b299b7b1d91 100644
--- a/test/compiler/irpasses.jl
+++ b/test/compiler/irpasses.jl
@@ -37,3 +37,55 @@ let m = Meta.@lower 1 + 1
     Core.Compiler.verify_ir(ir)
     @test isa(ir.stmts[3], Core.PhiNode) && length(ir.stmts[3].edges) == 1
 end
+
+# Tests for SROA
+
+mutable struct Foo30594; x::Float64; end
+Base.copy(x::Foo30594) = Foo30594(x.x)
+function add!(p::Foo30594, off::Foo30594)
+    p.x += off.x
+    return p
+end
+Base.:(+)(a::Foo30594, b::Foo30594) = add!(copy(a), b)
+
+let results = Float64[]
+    @noinline use30594(x) = push!(results, x.x); nothing
+    function foo30594(cnt::Int, dx::Int)
+        step = Foo30594(dx)
+        curr = step + Foo30594(1)
+        for i in 1:cnt
+            use30594(curr)
+            curr = curr + step
+        end
+        nothing
+    end
+
+    foo30594(4, -1)
+    @test results == [0.0, -1.0, -2.0, -3.0]
+end
+
+# Issue #29983
+# This one is a bit hard to trigger, but the key is to create a case
+# where SROA needs to introduce an intermediate type-unstable phi node
+struct Foo29983{T}
+    x::Tuple{T}
+end
+struct Bar29983{S}
+    x::S
+end
+Base.:+(a::T, b::Bar29983{S}) where {T, S} = Bar29983(a + b.x)
+Base.:+(a::Bar29983{S}, b::T) where {T, S} = b + a
+Base.:+(a::Bar29983{S}, b::Bar29983{T}) where {T, S} = Bar29983(a.x + b.x)
+Base.:+(a::Foo29983, b::Foo29983) = Foo29983((a.x[1] + b.x[1],))
+
+function f(x::Vector{T}) where {T}
+    x1 = Foo29983((x[1],))
+    la1 = Foo29983((x[1],))
+    f1 = Foo29983((0,))
+    for _ in 1:2
+        f1 += la1
+    end
+    return f1
+end
+
+@test f([Bar29983(1.0)]).x[1].x == 2.0