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This is to announce the release of ices 2.0 beta 3. The source client for streaming Ogg Vorbis to Icecast 2. After far too much time having passed since beta 2, where many fixes and updates have been applied, it's time to push for a full 2.0 release. This beta is really to flush out any remaining issues, so no new functionality is to be added until after the 2.0 release. Download from

This is to announce the release of ices 2.0 beta 3. The source client for streaming Ogg Vorbis to Icecast 2. After far too much time having passed since beta 2, where many fixes and updates have been applied, it's time to push for a full 2.0 release. This beta is really to flush out any remaining issues, so no new functionality is to be added until after the 2.0 release. Download from

I tried adding them in my backend however I run into the assertion assert((unsigned)VT.SimpleTy < sizeof(LoadExtActions[0])*4 && ExtType < array_lengthof(LoadExtActions) && "Table isn't big enough!"); What does the assertion mean ? thanks for all help!! shrey On Wed, Jul 14, 2010 at 6:56 PM, Eli Friedman <eli.friedman at gmail.com> wrote: > On Wed, Jul 14, 2010 at 6:48 PM, shreyas kr...

...o accomplish that: 1. Register the ZEXTLOAD for custom lowering: setLoadExtAction(ISD::ZEXTLOAD, MVT::i16, Custom); 2. Implement a custom lowering function: static SDValue LowerExtLoad(SDValue Op, SelectionDAG &DAG) { LoadSDNode *LD = dyn_cast<LoadSDNode>(Op.getNode()); ISD::LoadExtType ExtType = LD->getExtensionType(); if (LD->getExtensionType() == ISD::ZEXTLOAD) { DEBUG(errs() << "ZEXTLOAD\n"); SDValue Chain = LD->getChain(); SDValue Ptr = LD->getBasePtr(); DebugLoc dl = Op.getNode()->getDebugLoc(); SDValue LdResult = DAG.ge...

On Fri, Jul 16, 2010 at 5:14 PM, shreyas krishnan <shreyas76 at gmail.com> wrote: > I tried adding them in my backend however I run into the assertion > >  assert((unsigned)VT.SimpleTy < sizeof(LoadExtActions[0])*4 && >           ExtType < array_lengthof(LoadExtActions) && >           "Table isn't big enough!"); > > What does the assertion mean ? That means you forgot to bump up LAST_VALUETYPE. -Eli

I'm curious about this code in ReduceLoadWidth (and in DAGCombiner in general): if (LegalOperations && !TLI.isLoadExtLegal(ExtType, ExtVT)) return SDValue <http://llvm.org/docs/doxygen/html/classllvm_1_1SDValue.html>(); LegalOperations is false for the first pre-legalize pass and true for the post-legalize pass. The first pass is target-independent yes? So that makes sense. The issue we are having is this: we don...

...ZEXTLOAD i16.  I'm wondering if there is: > > a) A way to turn off this optimization in DAGCombine if your target > doesn't support LD2 natively This. I think you're talking about DAGCombiner::ReduceLoadWidth... and the "if (LegalOperations && !TLI.isLoadExtLegal(ExtType, ExtVT))" is supposed to ensure that the transformation in question is safe. That said, IIRC I fixed a bug there recently; are you using trunk? -Eli

...there is: >> >> a) A way to turn off this optimization in DAGCombine if your target >> doesn't support LD2 natively > > This. > > I think you're talking about DAGCombiner::ReduceLoadWidth... and the > "if (LegalOperations&& !TLI.isLoadExtLegal(ExtType, ExtVT))" is > supposed to ensure that the transformation in question is safe. That > said, IIRC I fixed a bug there recently; are you using trunk? Perfect! I'm using 2.8 for now (am hoping to roll forward to trunk and stay there in a month or two), and 2.8 only had that check f...

Hi All, I'm writing a backend for a target which only supports 4-byte, 4-byte-aligned loads and stores. I custom-lower all {*EXT}LOAD and STORE nodes in TargetISelLowering.cpp to take advantage of all alignment information available to the backend, rather than treat each load and store conservatively, which takes O(10) instructions. My target's allowsUnalignedMemoryOperations()

...> a) A way to turn off this optimization in DAGCombine if your target >>> doesn't support LD2 natively >> >> This. >> >> I think you're talking about DAGCombiner::ReduceLoadWidth... and the >> "if (LegalOperations&&  !TLI.isLoadExtLegal(ExtType, ExtVT))" is >> supposed to ensure that the transformation in question is safe.  That >> said, IIRC I fixed a bug there recently; are you using trunk? > > Perfect!  I'm using 2.8 for now (am hoping to roll forward to trunk and stay > there in a month or two), and 2.8...

...med.bougacha at gmail.com> wrote: > On Tue, Mar 3, 2015 at 10:35 AM, Ryan Taylor <ryta1203 at gmail.com> wrote: > > I'm curious about this code in ReduceLoadWidth (and in DAGCombiner in > > general): > > > > if (LegalOperations && !TLI.isLoadExtLegal(ExtType, ExtVT)) > > return SDValue(); > > > > LegalOperations is false for the first pre-legalize pass and true for the > > post-legalize pass. The first pass is target-independent yes? So that > makes > > sense. > > > > The issue we are having is this: we...

Hi I find types such as v16i32, v16f32 missing in my llvm version 2.7 So does the following page not list them http://llvm.org/docs/doxygen/html/classllvm_1_1MVT.html is that intentional for any reason or can I just add them ? thanks shrey

On Wed, Jul 14, 2010 at 6:48 PM, shreyas krishnan <shreyas76 at gmail.com> wrote: > Hi >   I find  types such as v16i32, v16f32  missing in my llvm version 2.7 > > So does the following page not list them > http://llvm.org/docs/doxygen/html/classllvm_1_1MVT.html > > is that intentional for any reason or can I just add them  ? As far as I know, they're not there

...mail.com> wrote: > On Fri, Jul 16, 2010 at 5:14 PM, shreyas krishnan <shreyas76 at gmail.com> wrote: >> I tried adding them in my backend however I run into the assertion >> >>  assert((unsigned)VT.SimpleTy < sizeof(LoadExtActions[0])*4 && >>           ExtType < array_lengthof(LoadExtActions) && >>           "Table isn't big enough!"); >> >> What does the assertion mean ? > > That means you forgot to bump up LAST_VALUETYPE. > > -Eli >

On Wed, May 20, 2009 at 4:55 PM, Dan Gohman <gohman at apple.com> wrote: > Can you explain why you chose the approach of using a new pass? > I pictured removing LegalizeDAG's type legalization code would > mostly consist of finding all the places that use TLI.getTypeAction > and just deleting code for handling its Expand and Promote. Are you > anticipating something more

On May 20, 2009, at 1:34 PM, Eli Friedman wrote: > On Wed, May 20, 2009 at 1:19 PM, Eli Friedman > <eli.friedman at gmail.com> wrote: > >> Per subject, this patch adding an additional pass to handle vector >> >> operations; the idea is that this allows removing the code from >> >> LegalizeDAG that handles illegal types, which should be a significant

...ult = DAG.getExtLoad(ISD::EXTLOAD, dl, NVT, Tmp3, VAList, NULL, 0, VT); - } - // Remember that we legalized the chain. - AddLegalizedOperand(Op.getValue(1), LegalizeOp(Result.getValue(1))); - break; - - case ISD::LOAD: { - LoadSDNode *LD = cast<LoadSDNode>(Node); - ISD::LoadExtType ExtType = ISD::isNON_EXTLoad(Node) - ? ISD::EXTLOAD : LD->getExtensionType(); - Result = DAG.getExtLoad(ExtType, dl, NVT, - LD->getChain(), LD->getBasePtr(), - LD->getSrcValue(), LD->getSrcValueOffset(), -...

...; On Tue, Mar 3, 2015 at 10:35 AM, Ryan Taylor <ryta1203 at gmail.com> > wrote: > >> > I'm curious about this code in ReduceLoadWidth (and in DAGCombiner in > >> > general): > >> > > >> > if (LegalOperations && !TLI.isLoadExtLegal(ExtType, ExtVT)) > >> > return SDValue(); > >> > > >> > LegalOperations is false for the first pre-legalize pass and true for > >> > the > >> > post-legalize pass. The first pass is target-independent yes? So that > >> > makes >...