ref: b9e50b5422bd185e9cba9bb11dede954a80d87ad
parent: 8a0bf641ba103e7893a4cc6b3482e2ab19d21e54
author: Erik de Castro Lopo <erikd@coltrane>
date: Sat Jul 3 02:52:10 EDT 2004
Add a test script to check for x86 fldcw instructions in asm output.
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,7 +4,8 @@
lib_LTLIBRARIES = libsamplerate.la
include_HEADERS = samplerate.h
-EXTRA_DIST = config.h.in Version_script.in
+EXTRA_DIST = config.h.in Version_script.in check_asm.sh
+CLEANFILES = src_sinc.s
COEFF_HDRS = high_qual_coeffs.h mid_qual_coeffs.h fastest_coeffs.h
@@ -15,6 +16,19 @@
libsamplerate_la_SOURCES = $(SRC_SOURCES) $(noinst_HEADERS)
libsamplerate_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@ @SHLIB_VERSION_ARG@
libsamplerate_la_LIBADD = -lm
+
+#-------------------------------------------------------------------------------
+# An extra check for bad asm.
+
+check : check_asm.sh src_sinc.s
+ @echo
+ @echo
+ ./check_asm.sh src_sinc.s
+ @echo
+ @echo
+
+src_sinc.s : src_sinc.c
+ $(CC) -S $(CFLAGS) src_sinc.c -o src_sinc.s
# Disable autoheader.
AUTOHEADER=echo
--- /dev/null
+++ b/src/check_asm.sh
@@ -1,0 +1,52 @@
+#!/bin/sh
+
+# Copyright (C) 2004 Erik de Castro Lopo <erikd@mega-nerd.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+
+#=======================================================================
+# This short test script compiles the file src_sinc.c into assembler
+# output and the greps the assembler output for the fldcw (FPU Load
+# Control Word) instruction which is very detrimental to the perfromance
+# of floating point code.
+
+echo -n " Checking assembler output for bad code : "
+
+if [ $# -ne 1 ]; then
+ echo "Error : Need the name of the input file."
+ exit 1
+ fi
+
+filename=$1
+
+if [ ! -f $filename ];then
+ echo "Error : Can't find file $filename."
+ exit 1
+ fi
+
+count=`grep fldcw $filename | wc -l`
+
+if [ $count -gt 0 ]; then
+ echo -e "\n\nError : found $count bad instructions.\n\n"
+ exit 1
+ fi
+
+echo "ok"
+
+# Do not edit or modify anything in this comment block.
+# The arch-tag line is a file identity tag for the GNU Arch
+# revision control system.
+#
+# arch-tag: 538c7cfe-6119-475c-b08e-ba3fef84e9e2