Use llvm-opt's LTO pass list instead of generic O2/O3 pass list for LTO

pnacl/build.sh

 #!/bin/bash
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 #@                 Untrusted Toolchain Manager
 #@-------------------------------------------------------------------
 #@ This script builds the ARM and PNaCl untrusted toolchains.
 #@ It MUST be run from the native_client/ directory.
 ######################################################################
@@ skipping 2673 matching lines @@
   # (with ac_cv_prog_cc_g).
 
   # There's no point in setting the correct path as sysroot, because we
   # want the toolchain to be relocatable. The driver will use ld command-line
   # option --sysroot= to override this value and set it to the correct path.
   # However, we need to include --with-sysroot during configure to get this
   # option. So fill in a non-sense, non-existent path.
   spopd
 }
 
-# binutils-gold-sb-make - Make binutils (unsandboxed)
+# binutils-gold-sb-make - Make binutils (sandboxed)
 binutils-gold-sb-make() {
-  local arch=${arch}
+  local arch=${1}
   local objdir="$(GetTranslatorBuildDir ${arch})/binutils-gold-sb"
   ts-touch-open "${objdir}/"
 
   StepBanner "GOLD-NATIVE-SB" "Make (liberty) ${arch}"
   spushd "${objdir}/libiberty"
 
   local log_prefix="binutils-gold.sb.${arch}"
   RunWithLog "${log_prefix}".make \
       env -i PATH="/usr/bin:/bin" \
       make ${MAKE_OPTS}
@@ skipping 1202 matching lines @@
   #Usage
   echo "ERROR: unknown function '$1'." >&2
   echo "For help, try:"
   echo "    $0 help"
   exit 1
 fi
 
 hg-migrate
 
 "$@"