Don't document exactly how virtual registers are represented as integers. Code
shouldn't depend directly on that.

Give an example of how to iterate over all virtual registers in a function
without depending on the representation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123099 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed