These macros are defined in avr-gcc and are useful when working with
assembly. For example, startup code needs to copy the contents of .data
from flash to RAM, but should use elpm (instead of lpm) on devices with
more than 64kB flash. Without __AVR_HAVE_ELPM__, there is no way to know
whether the elpm instruction is supported.
This partially fixes https://github.com/llvm/llvm-project/issues/56157.
Differential Revision: https://reviews.llvm.org/D137572
This macro is defined in avr-gcc, and is very useful especially in
assembly code to check whether particular instructions are supported. It
is also the basis for other macros like __AVR_HAVE_ELPM__.
Differential Revision: https://reviews.llvm.org/D137521
These tests were placed in the CodeGen directory while they really
should have been placed in the Preprocessor directory.
Differential Revision: https://reviews.llvm.org/D78163
Ayke van Laethem