Summary:
Useful in case you want to have control over interrupt vector generation.
For example in Rust language we have an arrangement where all unhandled
ISR vectors gets mapped to a single default handler function. Which is
hard to implement when LLVM tries to generate vectors on its own.
Reviewers: asl, krisb
Subscribers: hiraditya, JDevlieghere, awygle, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D67313
llvm-svn: 372910
