The presence (or absence) of a global variable has no effect on the rest of the generated code. Nothing changed. You could possibly look at the alignment of t

The presence (or absence) of a global variable has no effect on the rest of the generated code. Nothing changed. You could possibly look at the alignment of the in-memory representation generated by the relocator,runtime dynamic linker. Likely, some bits of code are now on the same cache line that were previously separate, and vice versa.