search for: 6480b

...::def points to. Some scenarios I want to understand: 4B A = ... 10B D = use A This seems straightforward. The instruction at slot 10 uses A at 10r and the VNInfo for 10r should have a def at 4r. But that's not right! I am staring at the following: LiveInterval: %vreg163 [5404r,6432B:0)[6480B,6688r:0) 0 at 5404r Instruction: 6688B %RDX<def> = COPY %vreg163 There is NO VNInfo at 6688r (the live range excludes it) but there is a VNInfo at 6688e (Slot_EarlyClobber). How am I supposed to know which slot to look at for a register use? Are ALL uses always at Slot_EarlyClobber? The...

...erstand: > > 4B A = ... > 10B D = use A > > This seems straightforward. The instruction at slot 10 uses A at 10r > and the VNInfo for 10r should have a def at 4r. > > But that's not right! I am staring at the following: > > LiveInterval: %vreg163 [5404r,6432B:0)[6480B,6688r:0) 0 at 5404r > Instruction: 6688B %RDX<def> = COPY %vreg163 An instruction by itself doesn't have any meaningful slot. It shows as B, but only because B is the default slot. For a given register you get the actual slot from the live interval. -Krzysztof