Adding some test cases used for building the PBQP code selection

[r20729]

ir/be/test/am_explode.c

+int a = 42;
+int array[32];
+int b = 990100;
+
+int main(void)
+{
+	int c = a+b;
+
+	array[0] = c + 1;
+	array[1] = c + 2;
+	array[2] = c + 3;
+	array[3] = c + 4;
+	array[4] = c + 5;
+	array[5] = c + 6;
+	array[6] = c + 7;
+	array[7] = c + 8;
+	array[8] = c + 9;
+	array[9] = c + 10;
+	array[10] = c + 11;
+	array[11] = c + 12;
+	array[12] = c + 13;
+	array[13] = c + 14;
+	array[14] = c + 15;
+	array[15] = c + 16;
+	array[16] = c + 17;
+	array[17] = c + 18;
+	array[18] = c + 19;
+	array[29] = c + 20;
+	array[20] = c + 21;
+	array[21] = c + 22;
+	array[22] = c + 23;
+	array[23] = c + 24;
+	array[24] = c + 25;
+	array[25] = c + 26;
+	array[26] = c + 27;
+	array[27] = c + 28;
+	array[28] = c + 29;
+	array[29] = c + 30;
+	array[30] = c + 31;
+	array[31] = c + 32;
+
+	return array[10];
+}

ir/be/test/bitwise.c

+
+	int a, b, c, d, e;
+
+int main(void) {
+	c = a & b;
+	d = c | a;
+	e = b ^ d;
+	return 0;
+}

ir/be/test/fehler115.c

+int test(float x, double y) {
+	return x + y;
+}
+
+int main() {
+	printf("%d (expected 15)\n", test(7.753f, 8.222));
+	return 0;
+}

ir/be/test/fehler116.c

+int main(void) {
+	float fy=3;
+	int c = 7 * fy;
+
+	printf("21 == %d \n", c);
+	return 0;
+}

ir/be/test/unary.c

+int a,b,c,d;
+
+int main(void) {
+	b = -a;
+	c = !a;
+	d = ~a;
+	return 0;
+}