[MSP430] Improve support of 'interrupt' attribute
* Accept as an argument constants in range 0..63 (aligned with TI headers and linker scripts provided with TI GCC toolchain).
* Emit function attribute 'interrupt'='xx' instead of aliases (used in the backend to create a section for particular interrupt vector).
* Add more diagnostics.
Patch by Kristina Bessonova!
Differential Revision: https://reviews.llvm.org/D56663
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@351344
91177308-0d34-0410-b5e6-
96231b3b80d8
projects / clang / commit