search for: slot_earlyclobb

...ctionIndex(*MI).getRegSlot(); if (VNInfo *VNI = OldLI.getVNInfoAt(Idx.getRegSlot(true))) if (SlotIndex::isSameInstr(Idx, VNI->def)) Idx = VNI->def; Comments in SlotIndexes.h have this to say: /// Early-clobber register use/def slot. A live range defined at /// Slot_EarlyCLobber interferes with normal live ranges killed at /// Slot_Register. Also used as the kill slot for live ranges tied to an /// early-clobber def. Slot_EarlyClobber, What does this mean, exactly? My impression was that an instruction uses a virtual register at Slot_EarlyClobber if...

On 12/22/2016 4:02 PM, via llvm-dev wrote: > > /// Early-clobber register use/def slot. A live range defined at > /// Slot_EarlyCLobber interferes with normal live ranges killed at > /// Slot_Register. Also used as the kill slot for live ranges tied to an > /// early-clobber def. > Slot_EarlyClobber, > > What does this mean, exactly? My impression was that an instruction > uses a virtual regi...

...ay's patch I'm not getting any errors at all, the code generated is the same one as with the call. This is happening when InlineSpiller::foldMemoryOperand() returns true, so a very wild guess is that maybe when calling LIS.ReplaceMachineInstrInMaps() the new SlotIndex created is not of type Slot_EarlyClobber since the MI being replaced is a COPY with no EC ops. I've also found a way for you to reproduce this error in a simple way with the ARM backend with -march=thumb: Just add "Constraints = "@earlyclobber $Rt" in" to the tLDRspi instruction in ARMInstrThumb.td (around line...

On Jul 15, 2012, at 9:20 AM, Borja Ferrer <borja.ferav at gmail.com> wrote: > Jakob, one more hint, I've placed some asserts around the code you added and noticed that the InlineSpiller::insertReload() function is not being called. > > 2012/7/14 Borja Ferrer <borja.ferav at gmail.com> > Hello Jakob, > > I'm still getting the error, I can give you any other

...ay's patch I'm not getting any errors at all, the code generated is the same one as with the call. This is happening when InlineSpiller::foldMemoryOperand() returns true, so a very wild guess is that maybe when calling LIS.ReplaceMachineInstrInMaps() the new SlotIndex created is not of type Slot_EarlyClobber since the MI being replaced is a COPY with no EC ops. OK, I see what is happening. We don't expect foldMemoryOperand to turn a normal def into an early-clobber and vice versa. This is not easy to fix, could you file a PR, please? As a workaround, you can use a pseudo-instruction in loadReg...