ispc/ispc v1.7.0

v1.7.0 (18 April 2014)

on GitHub

A major new version of ISPC with several language and library extensions and
fixes in debug info support. Binaries for all platforms are based on patched
version on LLVM 3.4. There also performance improvements beyond switchover to
LLVM 3.4.

The list of language and library changes:

• Support for varying types in exported functions was added. See documentation
  for more details.

• get_programCount() function was moved from stdlib.ispc to
  examples/util/util.isph, which needs to be included somewhere in your
  project, if you want to use it.

• Library functions for saturated arithmetic were added. add/sub/mul/div
  operations are supported for signed and unsigned 8/16/32/64 integer types
  (both uniform and varying).

• The algorithm for selecting overloaded function was extended to cover more
  types of overloading. Handling of reference types in overloaded functions was
  fixed. The rules for selecting the best match were changed to match C++,
  which requires the function to be the best match for all parameters. In
  ambiguous cases, a warning is issued, but it will be converted to an error
  in the next release.

• Explicit typecasts between any two reference types were allowed.

• Implicit cast of pointer to const type to void* was disallowed.

The list of other notable changes is:

• Number of fixes for better debug info support.

• Memory corruption bug was fixed, which caused rare but not reproducible
  compile time fails.

• Alias analysis was enabled (more aggressive optimizations are expected).

• A bug involving inaccurate handling of const qualifier was fixed. As a
  result, more const qualifiers may appear in .h files, which may cause
  compilation errors.