Displaying 12 results from an estimated 12 matches for "v128i16".
2016 Dec 12
0
TableGen - Help to implement a form of gather/scatter operations for Mips MSA
...<"ISD::MGATHER", SDTMaskedGather,
[SDNPHasChain, SDNPMayLoad, SDNPMemOperand]>;
Also, we need to make the operand $wsi a memory operand (otherwise we get the
difficult error: <<In LD_INDIRECT_D2: Type inference contradiction found, 'v128i16' needs
to be scalar>>), like in the following complete specification:
// Inspired heavily from lib/Target/X86/X86InstrInfo.td
class X86MemOperand<string printMethod> : Operand<iPTR> {
let PrintMethod = printMethod;
let MIOperandInfo = (...
2016 Dec 11
2
TableGen - Help to implement a form of gather/scatter operations for Mips MSA
...rn::ParseTreePattern(llvm::Init*, llvm::StringRef): Assertion
`New->getNumTypes() == 1 && "FIXME: Unhandled"' failed."
Can somebody help me with the code below responsible for this error?
// From llvm/lib/Target/X86/X86InstrFragmentsSIMD.td
def mgatherv128i16 : PatFrag<(ops node:$src1, node:$src2, node:$src3),
(masked_gather node:$src1, node:$src2, node:$src3) , [{
if (MaskedGatherSDNode *mgNode = dyn_cast<MaskedGatherSDNode>(N))
return (mgNode->getIndex().getValueType() == MVT::v128i16 ||
mgNode->g...
2016 Dec 15
2
TableGen - Help to implement a form of gather/scatter operations for Mips MSA
...2:32:32-i64:64-n32:32-S128", since my back end basically extends with
vector instructions the LLVM BPF back end.
So, at instruction selection it lowers the <128 x i16> value to <128 x i64>, since
pointers have 64 bits, which we can see from the debug info of llc:
t25: v128i16 = BUILD_VECTOR Constant:i64<31>, Constant:i64<31>, Constant:i64<31>,
Constant:i64<31>, Constant:i64<31>, Constant:i64<31>, Constant:i64<31>, Constant:i64<31>,
Constant:i64<31>, Constant:i64<31>, Constant:i64<31>, ...
Co...
2016 Oct 24
2
Instruction selection confusion at register - chooses vector register instead of scalar one
Hello.
I have extended the BPF back end with vector registers (inspiring from Mips MSA) -
something like this:
def MSA128D: RegisterClass<"Connex", [v128i16], 32,
(sequence "Wh%u", 0, 31)>;
I also added vector store and load instructions in the style of Mips MSA - see
https://github.com/llvm-mirror/llvm/blob/master/lib/Target/Mips/MipsMSAInstrInfo.td, look
for "def ST_D", etc.
Note however...
2016 Oct 25
0
Instruction selection confusion at register - chooses vector register instead of scalar one
...00, "Alex Susu via llvm-dev" <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote:
Hello.
I have extended the BPF back end with vector registers (inspiring from Mips MSA) -
something like this:
def MSA128D: RegisterClass<"Connex", [v128i16], 32,
(sequence "Wh%u", 0, 31)>;
I also added vector store and load instructions in the style of Mips MSA - see
https://github.com/llvm-mirror/llvm/blob/master/lib/Target/Mips/MipsMSAInstrInfo.td, look
for "def ST_D", etc.
Note however th...
2016 Dec 09
0
TableGen - Help to implement a form of gather/scatter operations for Mips MSA
Hi Alex,
I don’t know too much about recent MIPS, but have recently been doing something similar for the new ARM SVE architecture, so hopefully this will get you closer to what you need:
If you’re looking where I think you are (lib/Target/X86/X86InstrAVX512.td), ‘GatherNode’ is a template argument, not a definition.
It allows a PatFrag be passed into the avx512_gather multiclass definition.
2017 Jul 28
2
Addressing TableGen's error "Ran out of lanemask bits" in order to use more than 32 subregisters per register
...chmarks - things seem to work well.
>
> Besides these changes I added new vector types (basically all
> vector types that were not already present in LLVM, from 32 lanes to
> 1024, for types i8, i16, i32, i64 and f16/32/64, etc - examples of types
> that I needed are v128i1, v128i16, also v1024f64). The files I changed are:
> [repository]/llvm/include/llvm/CodeGen/ValueTypes.td
> [repository]/lib/IR/ValueTypes.cpp
> [repository]/include/llvm/IR/Intrinsics.td
> [repository]/llvm/include/llvm/CodeGen/MachineValueType.h
> [reposit...
2017 Jul 28
0
Addressing TableGen's error "Ran out of lanemask bits" in order to use more than 32 subregisters per register
...s with llc on various benchmarks
- things seem to work well.
Besides these changes I added new vector types (basically all vector types that were
not already present in LLVM, from 32 lanes to 1024, for types i8, i16, i32, i64 and
f16/32/64, etc - examples of types that I needed are v128i1, v128i16, also v1024f64). The
files I changed are:
[repository]/llvm/include/llvm/CodeGen/ValueTypes.td
[repository]/lib/IR/ValueTypes.cpp
[repository]/include/llvm/IR/Intrinsics.td
[repository]/llvm/include/llvm/CodeGen/MachineValueType.h
[repository]/llvm/utils/TableGen...
2017 Feb 11
2
Specify special cases of delay slots in the back end
Hello.
Hal, the problem I have is that it doesn't advance at the next available instruction
- it always gets the same store. This might be because I did not specify in a file like
[Target]Schedule.td the functional units, processor and instruction itineraries.
Regarding the Stalls argument to my method
[Target]DispatchGroupSBHazardRecognizer::getHazardType() I always get the
2016 Dec 09
5
TableGen - Help to implement a form of gather/scatter operations for Mips MSA
Hello.
I read on page 4 of http://www.cs.fsu.edu/~whalley/cda5155/chap4.pdf that gather and
scatter operations exist for Mips, named LVI and SVI, respectively.
Did anyone think of implementing in the LLVM Mips back end (part of the MSA vector
instructions) gather and scatter operations?
If so, can you share with me the TableGen spec? (I tried to start from LD_DESC_BASE,
but it
2017 Feb 01
2
Strange opt error in Value ("replaceAllUses of value with new value of different type!" assertion failure)
...you might see also a bit
from the error message above, is:
%0 = sext <128 x i16> zeroinitializer to <128 x i64>, !dbg !17
%VectorGep = getelementptr i16, i16* inttoptr (i16 51 to i16*), <128 x i64> %0,
!dbg !17
%1 = call <128 x i16> @llvm.masked.gather.v128i16(<128 x i16*> %VectorGep, i32 0,
<128 x i1> <i1 true,
It seems it is exactly the zeroinitializer causing the problem because if I use a
different constant value than zeroinitializer it no longer gives this error. I guess LLVM
gets confused by the many different types zeroinit...
2016 Sep 18
4
Addressing TableGen's error "Ran out of lanemask bits" in order to use more than 32 subregisters per register
Hello.
I've managed to patch the various files from the back end related to
lanemask - now I have 1024-bit long lanemask.
But now I get the following error when giving make llc:
<<error:unhandled vector type width in intrinsic!>>
This error comes from this file
https://github.com/llvm-mirror/llvm/blob/master/utils/TableGen/IntrinsicEmitter.cpp,
comes from the