This is to support building all data under medium code model, eg:
using -mcmodel=medium -mlarge-data-threshold=0. Code built with these
options is organized in final binary such that all data >= 0 bytes
is considered large and any reference to this data from .text section
is accessed via GOT. Hardcoded assembly without any wrt (WithReferenceTo)
annotation accesses the variable directly assuming small code model.
This commit changes LEA macro so that such accesses go via GOT.
Performance-wise, modern linkers are smart enough to remove that additional GOT access, if the final binary size ends up being smaller.
Some general information about code models: https://eli.thegreenplace.net/2012/01/03/understanding-the-x64-code-models
VideoLAN code repository instance