Tests: Remove x86 and SPARC BCJ tests

These are very old but the exact test file isn't easy to reproduce
as it was compiled from a short C program (bcj_test.c) long ago.
These tests weren't very good anyway, just a little better than nothing.

(cherry picked from commit a5f2aa5618)

tests/Makefile.am

@@ -8,16 +8,11 @@ EXTRA_DIST = \
 	tests.h \
 	test_files.sh \
 	test_compress.sh \
-	test_compress_prepared_bcj_sparc \
-	test_compress_prepared_bcj_x86 \
 	test_compress_generated_abc \
 	test_compress_generated_random \
 	test_compress_generated_text \
 	test_scripts.sh \
 	test_suffix.sh \
-	bcj_test.c \
-	compress_prepared_bcj_sparc \
-	compress_prepared_bcj_x86 \
 	xzgrep_expected_output
 
 AM_CPPFLAGS = \
@@ -59,8 +54,6 @@ TESTS = \
 	test_vli \
 	test_files.sh \
 	test_suffix.sh \
-	test_compress_prepared_bcj_sparc \
-	test_compress_prepared_bcj_x86 \
 	test_compress_generated_abc \
 	test_compress_generated_random \
 	test_compress_generated_text

tests/bcj_test.c

@@ -1,64 +0,0 @@
-// SPDX-License-Identifier: 0BSD
-
-///////////////////////////////////////////////////////////////////////////////
-//
-/// \file       bcj_test.c
-/// \brief      Source code of compress_prepared_bcj_*
-///
-/// This is a simple program that should make the compiler to generate
-/// PC-relative branches, jumps, and calls. The compiled files can then
-/// be used to test the branch conversion filters. Note that this program
-/// itself does nothing useful.
-///
-/// Compiling: gcc -std=c99 -fPIC -c bcj_test.c
-/// Don't optimize or strip.
-//
-//  Author:     Lasse Collin
-//
-///////////////////////////////////////////////////////////////////////////////
-
-extern int jump(int a, int b);
-
-
-extern int
-call(int a, int b)
-{
-	if (a < b)
-		a = jump(a, b);
-
-	return a;
-}
-
-
-extern int
-jump(int a, int b)
-{
-	// The loop generates conditional jump backwards.
-	while (1) {
-		if (a < b) {
-			a *= 2;
-			a += 3 * b;
-			break;
-		} else {
-			// Put enough code here to prevent JMP SHORT on x86.
-			a += b;
-			a /= 2;
-			b += b % 5;
-			a -= b / 3;
-			b = 2 * b + a - 1;
-			a *= b + a + 1;
-			b += a - 1;
-			a += b * 2 - a / 5;
-		}
-	}
-
-	return a;
-}
-
-
-int
-main(int argc, char **argv)
-{
-	int a = call(argc, argc + 1);
-	return a == 0;
-}

tests/files/README

@@ -66,14 +66,6 @@
     good-1-delta-lzma2.tiff.xz is an image file that compresses
     better with Delta+LZMA2 than with plain LZMA2.
 
-    good-1-x86-lzma2.xz uses the x86 filter (BCJ) and LZMA2. The
-    uncompressed file is compress_prepared_bcj_x86 found from the tests
-    directory.
-
-    good-1-sparc-lzma2.xz uses the SPARC filter and LZMA2. The
-    uncompressed file is compress_prepared_bcj_sparc found from the tests
-    directory.
-
     good-1-arm64-lzma2-1.xz uses the ARM64 filter and LZMA2. The
     uncompressed data is constructed so that it tests integer
     wrap around and sign extension. To recreate the file, compress

tests/test_compress_prepared_bcj_sparc

@@ -1,4 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: 0BSD
-
-exec "$srcdir/test_compress.sh" compress_prepared_bcj_sparc

tests/test_compress_prepared_bcj_x86

@@ -1,4 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: 0BSD
-
-exec "$srcdir/test_compress.sh" compress_prepared_bcj_x86