[Kaleidoscope][BuildingAJIT] Split up the code-block describing the substitution of OptimizeLayer for CompileLayer in Chapter 2.
[Kaleidoscope][BuildingAJIT] Split up the code-block describing the substitution
of OptimizeLayer for CompileLayer in Chapter 2.

Hopefully this will read a little more clearly.



git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@271868 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm