f8eb100c60
Previously, to compute the size of objects and the offsets of struct elements within structs, we were using the trick of using getelementpointer with a NULL base pointer and then casting the result to an int32/64. However, since we actually know the target we're compiling for at compile time, we can use corresponding methods from TargetData to get these values directly. This mostly cleans up code, but may make some of the gather/scatter lowering to loads/stores optimizations work better in the presence of structures.
============================== Intel(r) SPMD Program Compiler ============================== Welcome to the Intel(r) SPMD Program Compiler (ispc)! ispc is a new compiler for "single program, multiple data" (SPMD) programs. Under the SPMD model, the programmer writes a program that mostly appears to be a regular serial program, though the execution model is actually that a number of program instances execute in parallel on the hardware. ispc compiles a C-based SPMD programming language to run on the SIMD units of CPUs; it frequently provides a a 3x or more speedup on CPUs with 4-wide SSE units, without any of the difficulty of writing intrinsics code. ispc is an open source compiler under the BSD license; see the file LICENSE.txt. ispc supports Windows, Mac, and Linux, with both x86 and x86-64 targets. It currently supports the SSE2, SSE4, and AVX instruction sets. For more information and examples, as well as a wiki and the bug database, see the ispc distribution site, http://ispc.github.com.