mozilla/rust — pull request #5785 by JensNockert (2013-04-08 20:39:11+00:00)
Title: Remove (most) LLVM intrinsics from the compiler

This commit is similar to the old one, and does the following

- Removes most LLVM intrinsics from the compiler
- Adds functions that optimize down to specific LLVM intrinsics to
libcore
- Adds a pragma #[constant_arg] for constant integer arguments to intrinsics (and other functions)
- Utilize the sqrt intrinsic for f32/f64 since LLVM lowers it to an actual instruction sequence.