search for: dec64_32rr

...h clearer. The loop body produces the following SelectionDAG: http://i.imgur.com/tmJBZ.png The JNE_4 near the root of the graph depends on the flag produced by the DEC64_32r, through a CopyToReg node. Other nodes that write to the flags, such as the ADD64rr nodes on the left are not linked to the DEC64_32rr node with a WAW edge. I'm assuming that this is because they are not hardcoded to output to EFLAGS, but rather to a virtual register, and the aforementioned CopyToReg node takes the virtual output from DEC64_32rr and puts it in EFLAGS. The SelectionDAG is then converted to the following Schedu...