pet 0.10 has been released

pet 0.10 was released containing a couple of changes:

• Detect and report unbalanced pairs of scop/endscop pragmas

  For example, in the following code fragment, the #pragma scop appears inside the for-loop, while the #pragma endscop appears outside of the loop. Previous versions would silently ignore such regions. Now, a warning is produced.

  void foo(int a[10])
  {
          for (int i = 0; i < 10; ++i)
  #pragma scop
                  a[i] = i;
  #pragma endscop
  }
  

• Take into account assumptions during extraction

  Consider the program fragment below.

  int f(int k)
  {
          int a;
  #pragma scop
          __builtin_assume(k >= 0);
          a = k % 16;
  #pragma endscop
          return a;
  }
  

  Without the __builtin_assume, pet would have to assume that k may be either positive or negative, resulting in a piecewise expression for a. The extra assumption allows the expression to be simplified. Before, pet would only perform such simplifications at the very end, now they are also performed during the extraction process, potentially speeding up this extraction process in the presence of multiple modulo or integer division expressions.