seminaries/qtrvsim/branchpred-1: include example for branch predictor

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

seminaries/qtrvsim/branchpred-1/branchpred-1.S

+# i = s0, j = s1, c = s2, t0 = outer loop limits, t1 = inner loop limit, t3 - auxiliary variable
+
+  addi s1, zero, 0     # c = 0;
+  addi t0, zero, 4     # t0 = 500;
+  addi t1, zero, 5     # t1 = 2
+
+  addi s0, zero, 0     # i = 0;
+L1:
+  addi s1, zero, 0     # j = 0;
+L2:
+  addi s2, s2, 1     # c++;
+
+  addi s1, s1, 1     # j++;
+  slt  t3, s1, t1    # t3 = (s1 < t1) ? 1 : 0;
+  bne  t3, zero, L2
+  addi s0, s0, 1     # i++;
+  slt  t3, s0, t0    # t3 = (s0 < t0) ? 1 : 0;
+  bne  t3, zero, L1
+  ebreak