[llvm] Extend GCC workaround to GCC < 8.4 for llvm::iterator_range ctor (PR #82643)

[Tom Stellard via llvm-commits]

tstellar wrote:

We could also change our policy to only support the latest minor release of gcc-X.  That would make it much easier to test.

https://github.com/llvm/llvm-project/pull/82643