similar to: [LLVMdev] Multi instruction pattern help

Chris, Thanks for the help, this will help me with writing more patterns, but I am still hitting another roadblock. I attempted what you suggested and it fixed that issue, but then it started giving a warning that there is an unknown node in the resulting pattern. // unsigned int: f64->i32 ==> f64->f32 + f32->i32 def : Pat<(i32 (fp_to_uint (f64 GPR:$src0))), (i32

On Oct 6, 2008, at 5:42 PM, Villmow, Micah wrote: > I am trying to get a multi instruction pattern to work and seem to > be running into trouble. > The problem itself is fairly simple. I need to go from 64bit floats > to 32bit integers. As the backend doesn’t support this natively but > has a way of converting it, I’d prefer to get this working via > tablegen. > >

On Oct 7, 2008, at 9:30 AM, Villmow, Micah wrote: > Chris, > Thanks for the help, this will help me with writing more patterns, > but I am still hitting another roadblock. I attempted what you > suggested and it fixed that issue, but then it started giving a > warning that there is an unknown node in the resulting pattern. > > // unsigned int: f64->i32 ==>

I have a tablegen string that I want to add a modifier to the registers that are being matched. For example a simple match on fneg: def FNEG : OneInOneOut<IL_OP_MOV, (outs GPR:$dst), (ins GPR:$src0), "mov $dst, $src0", [(set GPR:$dst, (fneg GPR:$src0))]>; I want to place a modifier directly after $src0 in the string so that no space is between the string and

Hi, I'm working on an LLVM backend for GPUs. One thing that is a little different about some GPUs is that instructions can take registers or 32-bit floating point immediates as arguments. I was wondering if there is a way to model this using tablegen, without having to define an instruction for each possible combination of registers and immediates (e.g. For ADD it would require four

Tom, There is no way to do this that I know of. Maybe David Greene or someone who hacks on Tablegen a lot would know. Micah > -----Original Message----- > From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of Tom Stellard > Sent: Thursday, November 03, 2011 10:23 AM > To: LLVM Developers Mailing List > Subject: [LLVMdev] Tablegen:

Each register is a 4-component (namely, r, g, b, a) vector register. They are actually defined as llvm packed [4xfloat]. The instruction: add_sat r0.a, r1_bias.xxyy, r3_x2.zzzz Explaination: '.a' is a writemask. only the specified component will be update '.xxyy' and '.zzzz' are swizzle masks, specify the component permutation, simliar to the Intel SSE permutation

helps two alien isolation shaders shader-db: total instructions in shared programs : 4251497 -> 4251494 (-0.00%) total gprs used in shared programs : 513962 -> 513962 (0.00%) total local used in shared programs : 29797 -> 29797 (0.00%) total bytes used in shared programs : 38960264 -> 38960232 (-0.00%) local gpr inst bytes helped

Hello. I come back to this older thread. Again, because of i64immSExt32 I receive TableGen error "Could not infer all types in, pattern!" (exact details written below). So far I'm not able to generate selection code with TableGen for the ADD_r* instructions, etc: def i64immSExt32 : PatLeaf<(imm), [{return

Actually the problems that Tzu-Chien Chiu are encountering are similar to what should be done for generating SSE code in the X86 backend and also other SIMD instruction sets. I think LLVM neeeds to add instructions for permuting components, extracting and injecting elements in packed types. If the architecture has instructions which can do permutations for each instruction (for example

On Apr 15, 2009, at 11:15 AM, Villmow, Micah wrote: > I still think there is a bug somewhere, but not sure where yet. > This is what is generated in intrinsic.gen: > case Intrinsic::opencl_math_fdistance: // > llvm.opencl.math.fdistance > ResultTy = Type::FloatTy; > ArgTys.push_back(Tys[0]); > ArgTys.push_back(Tys[0]); > break; OK. That looks right to me.

If I force it to use v2f32 for my register class, it still fails with: d:\hq\main\sw\appeng\tools\hpc\opencl\compiler\llvm\test\AMDIL>TableGen. exe -gen -dag-isel -I../../include/ test.td > output GPRV2F32:v2f32:$src1 MACRO_DISTANCE_FAST_v2f32: (set GPRF32:f32:$dst, (i ntrinsic_w_chain:f32 84:iPTR, GPRV2F32:v2f32:$src0, GPRV2F32:v2f32:$src1)) TableGen.exe: In

Also some missing _src()s and cosmetic changes. --- src/gallium/programs/galliumut/Makefile | 5 + .../programs/galliumut/gen_uureg_opcodes.sh | 29 +++ src/gallium/programs/galliumut/uureg.h | 196 ++++---------------- 3 files changed, 71 insertions(+), 159 deletions(-) create mode 100644 src/gallium/programs/galliumut/gen_uureg_opcodes.sh diff --git

On Mar 19, 2010, at 12:23 PM, Villmow, Micah wrote: > Is there anywhere in the codebase that actually uses the ConvertAction to determine how conversion functions are lowered? I don't see any. > > In SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) > > ... > case ISD::SINT_TO_FP: > case ISD::UINT_TO_FP: > case ISD::EXTRACT_VECTOR_ELT: > Action =

So, I have this small test program that I figured would cause no problems but want to test all the various data types and operations with my modified sparc backend. I've been working on LLVM for about 3 days now, so this might be a problem with not knowing enough yet, so thanks for bearing with me. The code that I based my example off of is compiled to LLVM-IR from: void

How can I prevent some nodes from being combined in DAGCombine.cpp? Maybe what I want to do below doesn't follow the philosophy of LLVM, but I'd like to know if there is any way to avoid node from being combined. TargetLowering::PerformDAGCombine() is only called if DAGCombiner cannot combine a specific node. It seems that there is no chance to stop it from combining a node. I need the

On Apr 15, 2009, at 1:11 PM, Villmow, Micah wrote: > If I force it to use v2f32 for my register class, it still fails with: > d:\hq\main\sw\appeng\tools\hpc\opencl\compiler\llvm\test > \AMDIL>TableGen. > exe -gen > -dag-isel -I../../include/ test.td > output > GPRV2F32:v2f32:$src1 MACRO_DISTANCE_FAST_v2f32: (set > GPRF32:f32:$dst, (i > ntrinsic_w_chain:f32

Hello. I've tried to add some simple arithmetic vector operations to the BPF backend available in the LLVM repo. Because I added in BPFRegisterInfo.td another RegisterClass (taken from the Mips backend): def MSA128W: RegisterClass<"BPF", [v2i64, v2f64], 128, (sequence "W%u", 0, 31)>; in order to support vector for example, ADD

I am trying to make some modifications to our code generator that will produce better code, but require adding new patterns. What I am trying to do is take a register/register pattern and change it to a register/immediate. So for example, I have this pattern: class ILFormat<ILOpCode op, dag outs, dag ins, string asmstr, list<dag> pattern> : Instruction { let Namespace =

I'm working with Andrew on D43515 right now, and some of these unanswered questions are directly relevant to that patch. So.... On Fri, Feb 09, 2018 at 03:42:20PM +0100, Ulrich Weigand wrote: > C) Floating-point exceptions > If a mask bit in the floating-point status register is set, then all FP > instructions will *trap* whenever an IEEE exception condition is >