Hi all, this is my first post in this mailing list. I'm trying to understand GCC 4 as part of my research, but I'm finding questions which are difficult to answer just with online documentation.
I understand that the whole process of compiling a C file involves GENERIC->GIMPLE->SSA->GIMPLE->RTL If I'm not wrong, GCC currently cannot go from SSA to RTL directly. What I don't understand is what happens with all versions of the same variable when doing the SSA->GIMPLE step. Are they mixed into a single variable declaration? Are they treated as separate variables and handled later by the register allocator? Thanks in advance. Jose.
