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...r certain operations (like sdiv). We recently ran into a problem where these operations that are expanded to library calls aren't maintaining the proper ordering in relation to other chains in the DAG. The following snippet of a DAG demonstrates the problem. t0: ch = EntryToken t2: i64,ch,glue = CopyFromReg t0, Register:i64 %reg0 t4: i64,ch,glue = CopyFromReg t2:1, Register:i64 %reg1, t2:1 t6: i64,ch,glue = CopyFromReg t4:1, Register:i64 %reg2, t4:1 t8: i64,ch,glue = CopyFromReg t6:1, Register:i64 %reg3, t6:1 t11: ch = CopyToReg t0, Register:i64 %vreg0, t2 t13: ch =...

Hello everyone, I wanted to attach a node without affecting the present nodes in any way. I tried to use MVT::Glue for that but I think I'm missing something as I could not achieve the below state. LUI LUI | | ADDI ----GLUE---- ADDI | store I've few question about this and Glue node in general, I'll be happy to get some help on this :) 1. Is...

Hi guys I got the errors like this while compiling cluster glue: ./.libs/libplumb.so: undefined reference to `uuid_parse' ./.libs/libplumb.so: undefined reference to `uuid_generate' ./.libs/libplumb.so: undefined reference to `uuid_copy' ./.libs/libplumb.so: undefined reference to `uuid_is_null' ./.libs/libplumb.so: undefined reference to `uuid...

...er - Disable interrupts - Do the nonatomic LOAD/STORE/SWAP/ADD - Restore the status register I’d really like to be able to do this at the IR level. What I want to do is write a custom lowering hook to convert ISD::ATOMIC_LOAD into a standard ISD::LOAD with the save/restore/interrupt nodes glued to it. Here’s what I have so far: // Store `SREG` auto Save = DAG.getCopyFromReg(DAG.getEntryNode(), DL, AVR::SREG, MVT::i8); // Disable interrupts (`clr` is equivalent to `bclr 7`). auto ClearInterrupts = DAG.getNode(AVRISD::BCLR, DL, MVT::Glue, DAG.getConstant(7, DL, MVT::i8)); //...

...;0x3dbe418>)> t24:1, GlobalAddress:i16<float* @x3> 0, undef:i16 t26: f32,ch = load<Volatile LD4[@x4](tbaa=<0x3dbe418>)> t25:1, GlobalAddress:i16<float* @x4> 0, undef:i16 t27: i16 = GlobalAddress<float (float, float, float, float)* @fdivfaddfmul_a> 0 t29: ch,glue = callseq_start t26:1, TargetConstant:i16<4> t31: ch,glue = CLPISD::COPY_TO_CALLEE_A t29, t23, FrameIndex:i16<0>, t29:1 t33: ch,glue = CLPISD::COPY_TO_CALLEE_A t31, t24, FrameIndex:i16<1>, t31:1 t35: ch,glue = CLPISD::COPY_TO_CALLEE_A t33, t25, FrameIndex:i16<2>, t33:1...

...) checkhints: extra NS 'L.ROOT-SERVERS.NET' in hints: 170 Time(s) checkhints: extra NS 'M.ROOT-SERVERS.NET' in hints: 170 Time(s) checkhints: unable to find root NS 'ns1.dnslibre.info' in hints: 147 Time(s) checkhints: unable to find root NS 'ns1.opennic.glue' in hints: 170 Time(s) checkhints: unable to find root NS 'ns10.opennic.glue' in hints: 170 Time(s) checkhints: unable to find root NS 'ns2.dnslibre.info' in hints: 147 Time(s) checkhints: unable to find root NS 'ns2.opennic.glue' in hints: 170 Time(s)...

I don't think that'd work, because it leaves all other backends broken. AFAICT, your transform is simply not a legal transform, with the way the ADDC/ADDE opcodes are currently defined, and to do it you really need to fix the opcode definitions to not involve glue, first. I also note that your transform doesn't actually trigger at all on this particular test case on x86, because the dag ends up looking like (uaddo X, (adde Y, 0, Carry)), which the transform doesn't match. That is not really relevant to the issue here, because the x86 backend does wo...

Hi, Is there a kind of scope mechanism in the instruction lowering pattern language in order to control where instructions are inserted or how they are later reordered during the SelectionDiag linearization? I know the glue chain that stick instructions together. But such mechanism in not provided in instruction lowering pattern. I'm facing many situations where some patterns are lowered into valid sequences of consecutive SDNodes/Instructions. Such sequences have no glue, so later during Instruction Scheduling/Se...

...float* @x3> 0, undef:i16 > >   t26: f32,ch = load<Volatile LD4[@x4](tbaa=<0x3dbe418>)> t25:1, > GlobalAddress:i16<float* @x4> 0, undef:i16 > >   t27: i16 = GlobalAddress<float (float, float, float, float)* > @fdivfaddfmul_a> 0 > >   t29: ch,glue = callseq_start t26:1, TargetConstant:i16<4> > >   t31: ch,glue = CLPISD::COPY_TO_CALLEE_A t29, t23, FrameIndex:i16<0>, > t29:1 > >   t33: ch,glue = CLPISD::COPY_TO_CALLEE_A t31, t24, FrameIndex:i16<1>, > t31:1 > >   t35: ch,glue = CLPISD::COPY_TO_C...

Would it not make sense to refactor the code so those don't use glue rather than emitting them with glue and then getting rid of it. There are times when we would like to emit these in separate blocks but can't (presumably because of the glue). On Tue, Feb 7, 2017 at 9:15 PM, James Y Knight via llvm-dev < llvm-dev at lists.llvm.org> wrote: > That'...

...p_by(screen_name) %>% ts_plot("days", trim = 1L) + ggplot2::geom_point() + ggplot2::labs( title = "Tuits publicados por cada cuenta" ) Me da el siguiente error Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) : namespace ?glue? 1.3.1 is already loaded, but >= 1.3.2 is required Instalé y corrí glue, no sé si tenga que ver con la versión de R que tengo. Alguien tiene idea cuál es el problema? Muchas gracias! [[alternative HTML version deleted]]

...;float* @x3> 0, undef:i16 > >   t26: f32,ch = load<Volatile LD4[@x4](tbaa=<0x3dbe418>)> t25:1, > GlobalAddress:i16<float* @x4> 0, undef:i16 > >   t27: i16 = GlobalAddress<float (float, float, float, float)* > @fdivfaddfmul_a> 0 > >   t29: ch,glue = callseq_start t26:1, TargetConstant:i16<4> > >   t31: ch,glue = CLPISD::COPY_TO_CALLEE_A t29, t23, > FrameIndex:i16<0>, > t29:1 > >   t33: ch,glue = CLPISD::COPY_TO_CALLEE_A t31, t24, > FrameIndex:i16<1>, > t31:1 > >   t35: ch,glue = CLPISD:...

...ADDC/SUBC (which would seem a good outcome). You'd need to make sure the right thing happened when converting from ADDC's 1-bit carry in/out to X86ISD::AD[DC]'s EFLAGS i/o. Right now the conversion can get away with assuming that the only thing which can be used as input to ADDC is the glue-output of ADD/ADDC. That would no longer be the case once they're using a normal value. (Actually, I wonder if it would be possible to represent x86's EFLAGS.CARRY as a 1-bit subreg of EFLAGS, and use that on input to X86ISD::ADC; that may allow cheaper spills/reloads if it only has to sav...

The log message for revision 122213 says: > Change the X86 backend to stop using the evil ADDC/ADDE/SUBC/SUBE nodes (which > their carry depenedencies with MVT::Flag operands) and use clean and beautiful > EFLAGS dependences instead. (MVT::Flag has since been renamed to MVT::Glue.) That revision made bug 8404 go away. Am I right in thinking that one of the problems with MVT::Glue is that it is hard to guarantee that other instructions won't come between the two instructions that are glued together? And another problem is that you actually want to allow some instructio...

...plemented a pair intrinsic nodes in back-end, But there is a chain dependence between two intrinsic nodes. So in the Pre-RA-sched stage, these two intrinsic nodes would be apart. I expect that there is no node between these two intrinsic nodes, therefore, I guess it would be work if there is a MVT::Glue between these nodes. But I don’t know how to add. Thanks in advance. Haishan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140623/5cea9454/attachment.html>

...ions for these. There are interactions with 'ISD::CALL' and 'ISD::RET_FLAG', but so far as I can tell I have revised these in the same way as the in-tree targets have adjusted their sources. The error I am seeing is: fatal error: error in backend: Cannot select: 0x15c9bbe00: ch,glue = callseq_end 0x15c9bbd98, TargetConstant:i32<0>, TargetGlobalAddress:i32<void (i8*, i32, i8*, i8*)* @__assert_func> 0, 0x15c9bbd98:1 0x15c9bb920: i32 = TargetConstant<0> 0x15c9bb8b8: i32 = TargetGlobalAddress<void (i8*, i32, i8*, i8*)* @__assert_func> 0 0x15c9bb...

Hi there, I try to JIT compile some bitcode and seeing the following error: LLVM ERROR: Cannot select: 0x28ec830: ch,glue = X86ISD::CALL 0x28ec7c0, 0x28ef900, Register:i32 %EDI, Register:i8 %AL, RegisterMask:Untyped, 0x28ec7c0:1 0x28ef900: i32 = X86ISD::Wrapper TargetGlobalAddress:i32<void (i8*, ...)* @_ZN5FooBr7xprintfEPKcz> 0 0x28ec520: i32 = TargetGlobalAddress<void (i8*, ...)* @_ZN5FooBr7xprintfEPKc...

Long story short: https://llvm.org/bugs/show_bug.cgi?id=31890 The backend fails to schedule a given DAG, the reason being that there is an instruction and it glue that needs to be broken apart as they can't be scheduled consecutively. See attached file for a picture of the DAG. Not sure what's the best course of action is, and not sure why this isn't a problem for the X86 backend either. I'm looking for advice on the best course of actions....

newbee here. What's the difference between glue and chain? Why can't we add chains to any node we want? On Fri, Jul 17, 2020, 10:25 PM Björn Pettersson A via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Still sounds to me as Glue might help (as already proposed by Craig), but > maybe I’ve misunderstood something. > > &...

Hi, I am confused about the behavior of chain of glue operands; I have a node that receives the chain and a glue operand from the same node, and the ISEL DAG looks how I want it to. However, once it passes to scheduling, the glue no longer exists and the nodes are just chained, but twice. ISel output: ISEL: Starting pattern match on root node: 0x2c...