… to synonymous LLVM attributes

…tion of alias sets

…s out of serial loops

…pressions that emerge from SimplifyCFG's sinking optimization

…rom functions that should be treated like system memory allocation functions for memory accesses within the same strand.

…in LLVM IR.

…structions in the same strand and to utilize the strand_pure and strand_noalias attributes for such queries.

… same spindle and to use that spindle information for alias-analysis queries.

…c library functions. Record some libraries for Cilk and OpenCilk Tapir targets. Update the default Tapir target to be OpenCilk.

…ns when analyzing code metrics.

…e of Tapir tasks in the loop as part of the loop, even if LoopInfo does not recognize those blocks as belonging to the loop.

… hoist code out of the generated inner serial loop. This change allows for substantial optimization of Tapir loops containing __cilkrts_hyper_lookup calls.