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| author | Sverker Eriksson <[email protected]> | 2018-03-19 19:13:29 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2018-04-19 15:18:58 +0200 |
| commit | 1ab478a7ce281f7cdce01df2fe04953c0770fdbc (patch) | |
| tree | f20f9caf78faad66129c9059276f281c7908387c /lib/erl_interface/configure.in | |
| parent | 1d3acb70debd134c8346b7e98347171d5cf6fc62 (diff) | |
| download | otp-1ab478a7ce281f7cdce01df2fe04953c0770fdbc.tar.gz otp-1ab478a7ce281f7cdce01df2fe04953c0770fdbc.tar.bz2 otp-1ab478a7ce281f7cdce01df2fe04953c0770fdbc.zip | |
erl_interface: Optimize latin1_to_utf8 and friend
to do word wise check/copy for pure ASCII
if ARCH allows it (x86 and amd64).
Diffstat (limited to 'lib/erl_interface/configure.in')
| -rw-r--r-- | lib/erl_interface/configure.in | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/lib/erl_interface/configure.in b/lib/erl_interface/configure.in index 0a8fbf513c..7cc1f1f89a 100644 --- a/lib/erl_interface/configure.in +++ b/lib/erl_interface/configure.in @@ -106,6 +106,98 @@ if test $ac_cv_sizeof_long = 8; then CFLAGS="$CFLAGS -DEI_64BIT" fi +dnl +dnl Determine target hardware in ARCH +dnl +AC_MSG_CHECKING([target hardware architecture]) +if test "x$host_alias" != "x" -a "x$host_cpu" != "x"; then + chk_arch_=$host_cpu +else + chk_arch_=`uname -m` +fi + +case $chk_arch_ in + sun4u) ARCH=ultrasparc;; + sparc64) ARCH=sparc64;; + sun4v) ARCH=ultrasparc;; + i86pc) ARCH=x86;; + i386) ARCH=x86;; + i486) ARCH=x86;; + i586) ARCH=x86;; + i686) ARCH=x86;; + x86_64) ARCH=amd64;; + amd64) ARCH=amd64;; + macppc) ARCH=ppc;; + powerpc) ARCH=ppc;; + ppc) ARCH=ppc;; + ppc64) ARCH=ppc64;; + ppc64le) ARCH=ppc64le;; + "Power Macintosh") ARCH=ppc;; + armv5b) ARCH=arm;; + armv5teb) ARCH=arm;; + armv5tel) ARCH=arm;; + armv5tejl) ARCH=arm;; + armv6l) ARCH=arm;; + armv6hl) ARCH=arm;; + armv7l) ARCH=arm;; + armv7hl) ARCH=arm;; + tile) ARCH=tile;; + *) ARCH=noarch;; +esac +AC_MSG_RESULT($ARCH) + +dnl +dnl Convert between x86 and amd64 based on the compiler's mode. +dnl Ditto between ultrasparc and sparc64. +dnl +AC_MSG_CHECKING(whether compilation mode forces ARCH adjustment) +case "$ARCH-$ac_cv_sizeof_void_p" in + x86-8) + AC_MSG_RESULT(yes: adjusting ARCH=x86 to ARCH=amd64) + ARCH=amd64 + ;; + amd64-4) + AC_MSG_RESULT(yes: adjusting ARCH=amd64 to ARCH=x86) + ARCH=x86 + ;; + ultrasparc-8) + AC_MSG_RESULT(yes: adjusting ARCH=ultrasparc to ARCH=sparc64) + ARCH=sparc64 + ;; + sparc64-4) + AC_MSG_RESULT(yes: adjusting ARCH=sparc64 to ARCH=ultrasparc) + ARCH=ultrasparc + ;; + ppc64-4) + AC_MSG_RESULT(yes: adjusting ARCH=ppc64 to ARCH=ppc) + ARCH=ppc + ;; + ppc-8) + AC_MSG_RESULT(yes: adjusting ARCH=ppc to ARCH=ppc64) + ARCH=ppc64 + ;; + arm-8) + AC_MSG_RESULT(yes: adjusting ARCH=arm to ARCH=noarch) + ARCH=noarch + ;; + *) + AC_MSG_RESULT(no: ARCH is $ARCH) + ;; +esac + +AC_SUBST(ARCH) + +AC_MSG_CHECKING(for unaligned word access) +case "$ARCH" in + x86|amd64) + AC_MSG_RESULT(yes: x86 or amd64) + AC_DEFINE(HAVE_UNALIGNED_WORD_ACCESS, 1, [Define if hw supports unaligned word access]) + ;; + *) + AC_MSG_RESULT(no) + ;; +esac + AC_CHECK_TOOL(AR, ar, false) if test "$AR" = false; then AC_MSG_ERROR([No 'ar' command found in PATH]) |