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0f74d191d1
This patch adds support to generate any number of sections that are assigned to fragments of functions that are split more than two-way. With this, a function's *nth* split fragment goes into section `.text.cold.n`. This also changes `FunctionLayout::erase` to make sure, that there are no empty fragments at the end of the function. This sometimes happens when blocks are erased from the function. To avoid creating symbols pointing to these fragments, they need to be removed. Reviewed By: rafauler Differential Revision: https://reviews.llvm.org/D130521