search for: sextloadvi8

I have an operation which loads a 16 bit block of data as 2 8-bit elements, sign extends the both parts to 32 bits and stores the result into 64-bit vector register. How can I define the pattern for this? just using [(set V2I32Regs:$result, (sextloadv2i8 ADDRrr:$address))] gives me error that extloav2i8 is not defined. (the same principle works for scalar sextload) So I need to define it

Hi Heikki, > just using [(set V2I32Regs:$result, (sextloadv2i8 ADDRrr:$address))] > > gives me error that extloav2i8 is not defined. I don't have a target to test this on, but looking at include/llvm/Target/TargetSelectionDAG.td, there is an "sextloadvi8" PatFrag, at least. I'd suggest a pattern along the lines of: (set V2I32Regs:$result, (v2i32 (sextloadvi8 ADDRrr:$address))) Tim.

...: > Hi Heikki, > >> just using [(set V2I32Regs:$result, (sextloadv2i8 ADDRrr:$address))] >> >> gives me error that extloav2i8 is not defined. > > I don't have a target to test this on, but looking at > include/llvm/Target/TargetSelectionDAG.td, there is an "sextloadvi8" > PatFrag, at least. I'd suggest a pattern along the lines of: > > (set V2I32Regs:$result, (v2i32 (sextloadvi8 ADDRrr:$address))) Thanks, now it accepts the pattern, but it still does not work. LLVM ERROR: Cannot select: 0x1b98410: v2i32,ch = load 0x2bc86a0, 0x1b9d460, 0x25ceb...