Method _insert_continue_label

Tools/jit/_optimizers.py:334–348

(self)

                yield pre

    def _insert_continue_label(self) -> None:
        # Find the block with the last instruction:
        for end in reversed(list(self._blocks())):
            if end.instructions:
                break
        # Before:
        #    jmp FOO
        # After:
        #    jmp FOO
        #    _JIT_CONTINUE:
        # This lets the assembler encode _JIT_CONTINUE jumps at build time!
        continuation = self._lookup_label(f"{self.label_prefix}_JIT_CONTINUE")
        assert continuation.label
        continuation.noninstructions.append(f"{continuation.label}:")
        end.link, continuation.link = continuation, end.link

    def _mark_hot_blocks(self) -> None:
        # Start with the last block, and perform a DFS to find all blocks that