Instruction set supported masking makes it easier to do per lane control flow, like "if else", familiar from the shader programming model (and Intel's ISPC) whe

Instruction set supported masking makes it easier to do per lane control flow, like "if else", familiar from the shader programming model (and Intel's ISPC) where you write a function that operates on one datum, and it gets compiled into code where individual SIMD lanes may by masked depending on which side of a data dependent branch they are executing. (I don't know what the GCC change is though)