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34729
2013 Oct 14
1
[LLVMdev] LiveInterval Questions
...phi 2 at 6688B-phi 3 at 3472r 4 at 12160B
-phi 5 at 13744B-phi 6 at 14480B-phi 7 at 18048B-phi 8 at 19792B-phi
There is only one non-phi def. The (one) instruction defining the
virtual register containing value #3 is at the top level of the
function, not in a loop nest and not under a condition:
3472B %vreg637<def> = MOV64rm <fi#0>, 1, %noreg, 32, %noreg; mem:LD8[%37](align=32) GR64:%vreg637 dbg:file.c:46 [comments:
Because of the multiple value numbers resulting from the phi defs, what
appears at first to be a live interval that could be collapsed into one
LiveRange cannot be so c...