search for: ptx_device

Dear Justin, I am trying to add the support for some OpenCL builtin functions to the PTX backend. The attached file represent the first stub of a patch for the fmax builtin function. The test case I am trying is the following: define ptx_device float @f(float %x, float %y) { entry: %z = call float @fmax(float %x, float %y) ret float %z } declare float @fmax(float, float) But at the moment llc crashes saying that "calls are not supported", this does not happens with llvm builtins like llvm.sqrt.f32 Can you please give me a...

...ind { entry: %callback.addr = alloca i32*, align 8 store i32* %callback, i32** %callback.addr, align 8 %0 = load i32** %callback.addr, align 8 %1 = bitcast i32* %0 to %struct.kernelgen_callback_t* %lock = getelementptr inbounds %struct.kernelgen_callback_t* %1, i32 0, i32 0 %call = call ptx_device i32 @_Z12__iAtomicCASPiii(i32* %lock, i32 1, i32 0) br label %while.cond while.cond: ; preds = %while.body, %entry %2 = load i32** %callback.addr, align 8 %3 = bitcast i32* %2 to %struct.kernelgen_callback_t* %lock1 = getelementptr inbounds %struct.ker...

...define the LLVM intrinsic as @llvm.ptx.max(). > >>> Please follow the same convention when naming the __builtin_* > function. > >>> > >>>> > >>>> The test case I am trying is the following: > >>>> > >>>> define ptx_device float @f(float %x, float %y) { > >>>> entry: > >>>> %z = call float @fmax(float %x, float %y) > >>>> ret float %z > >>>> } > >>>> > >>>> declare float @fmax(float, float) > >>>> > >>&...

...= alloca i32*, align 8 > store i32* %callback, i32** %callback.addr, align 8 > %0 = load i32** %callback.addr, align 8 > %1 = bitcast i32* %0 to %struct.kernelgen_callback_t* > %lock = getelementptr inbounds %struct.kernelgen_callback_t* %1, i32 0, > i32 0 > %call = call ptx_device i32 @_Z12__iAtomicCASPiii(i32* %lock, i32 1, i32 0) > br label %while.cond > > while.cond: ; preds = %while.body, %entry > %2 = load i32** %callback.addr, align 8 > %3 = bitcast i32* %2 to %struct.kernelgen_callback_t* > %lock1 = gete...

...ax(). >> >>>  Please follow the same convention when naming the __builtin_* >> >>> function. >> >>> >> >>>> >> >>>> The test case I am trying is the following: >> >>>> >> >>>> define ptx_device float @f(float %x, float %y) { >> >>>> entry: >> >>>>  %z = call float @fmax(float %x, float %y) >> >>>>  ret float %z >> >>>> } >> >>>> >> >>>> declare float @fmax(float, float) >> &gt...

...case here. When you define a new intrinsic, use the following template as a name: int_ptx_max. This will define the LLVM intrinsic as @llvm.ptx.max(). Please follow the same convention when naming the __builtin_* function. > > The test case I am trying is the following: > > define ptx_device float @f(float %x, float %y) { > entry: > %z = call float @fmax(float %x, float %y) > ret float %z > } > > declare float @fmax(float, float) > > But at the moment llc crashes saying that "calls are not supported", > this does not > happens with llvm builtin...

...lease follow the same convention when naming the __builtin_* > >> >>> function. > >> >>> > >> >>>> > >> >>>> The test case I am trying is the following: > >> >>>> > >> >>>> define ptx_device float @f(float %x, float %y) { > >> >>>> entry: > >> >>>> %z = call float @fmax(float %x, float %y) > >> >>>> ret float %z > >> >>>> } > >> >>>> > >> >>>> declare float @f...

...PTXInstrInfo.td as you suggested before. multiclass PTX_LOGIC_2OP<string opcstr,PatFrag opnode> { ... } Now I am trying to write test case for logic and shift operations. But I have a trouble in mapping LLVM IR to PTX IR for "not" instruction. The test case I wrote is, define ptx_device i16 @t4_u16(i16 %x) { ; CHECK: not.b16 rh0, rh1, rh2; ; CHECK-NEXT: ret; %z = xor i16 %x, 1 ret i16 %z } Since LLVM IR doesn't support logical not directly, I use "xor i16 %x, 1" to represent logical not in LLVM IR. It turns out the IR is mapped to PTX "xor" not PTX &qu...

...nvention when naming the __builtin_* >> >> >>> function. >> >> >>> >> >> >>>> >> >> >>>> The test case I am trying is the following: >> >> >>>> >> >> >>>> define ptx_device float @f(float %x, float %y) { >> >> >>>> entry: >> >> >>>>  %z = call float @fmax(float %x, float %y) >> >> >>>>  ret float %z >> >> >>>> } >> >> >>>> >> >> >>&...

...ltin_* > >> >> >>> function. > >> >> >>> > >> >> >>>> > >> >> >>>> The test case I am trying is the following: > >> >> >>>> > >> >> >>>> define ptx_device float @f(float %x, float %y) { > >> >> >>>> entry: > >> >> >>>>  %z = call float @fmax(float %x, float %y) > >> >> >>>>  ret float %z > >> >> >>>> } > >> >> >>>> &g...

...ch is invalid. Problem does not occur if compiled for sm_10. > cat test.ll ; ModuleID = '__kernelgen_main_module' target datalayout = "e-p:64:64-i64:64:64-f64:64:64-n1:8:16:32:64" target triple = "ptx64-unknown-unknown" %struct.float2 = type { float, float } define ptx_device void @__internal_dsmul(%struct.float2* noalias nocapture sret %agg.result, %struct.float2* nocapture byval %x, %struct.float2* nocapture byval %y) nounwind inlinehint alwaysinline { entry: %y1 = getelementptr inbounds %struct.float2* %x, i64 0, i32 1 %0 = load float* %y1, align 4 %sub = fsub...

...nction. > >> >> >> >>> > >> >> >> >>>> > >> >> >> >>>> The test case I am trying is the following: > >> >> >> >>>> > >> >> >> >>>> define ptx_device float @f(float %x, float %y) { > >> >> >> >>>> entry: > >> >> >> >>>> %z = call float @fmax(float %x, float %y) > >> >> >> >>>> ret float %z > >> >> >> >>>> } > &...

...>> >>> function. >> >> >> >>> >> >> >> >>>> >> >> >> >>>> The test case I am trying is the following: >> >> >> >>>> >> >> >> >>>> define ptx_device float @f(float %x, float %y) { >> >> >> >>>> entry: >> >> >> >>>>  %z = call float @fmax(float %x, float %y) >> >> >> >>>>  ret float %z >> >> >> >>>> } >> >> >>...

...v32:32:32-v64:64:64-v128:128:128-n16:32:64" target triple = "nvptx64-unknown-unknown" @__kernelgen_version = constant [15 x i8] c"0.2/1654:1675M\00" define ptx_kernel void @__kernelgen_matvec_loop_7(i32* nocapture) #0 { "Loop Function Root": %tid.x = tail call ptx_device i32 @llvm.nvvm.read.ptx.sreg.tid.x() %ctaid.x = tail call ptx_device i32 @llvm.nvvm.read.ptx.sreg.ctaid.x() %PositionOfBlockInGrid.x = shl i32 %ctaid.x, 9 %BlockLB.Add.ThreadPosInBlock.x = add i32 %PositionOfBlockInGrid.x, %tid.x %isThreadLBgtLoopUB.x = icmp sgt i32 %BlockLB.Add.ThreadPosIn...

...; >> >> >>> > > >> >> >> >>>> > > >> >> >> >>>> The test case I am trying is the following: > > >> >> >> >>>> > > >> >> >> >>>> define ptx_device float @f(float %x, float %y) { > > >> >> >> >>>> entry: > > >> >> >> >>>> %z = call float @fmax(float %x, float %y) > > >> >> >> >>>> ret float %z > > >> >> >> >&...

...attached max_not_working.patch file): def int_ptx_max : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>, LLVMMatchType<0>], [Commutative]>; The problem is that the builtin is not recognised in the following test case: define ptx_device i16 @max_16(i16 %a, i16 %b) { entry: %d = call i16 @llvm.ptx.max(i16 %a, i16 %b) ret i16 %d } declare i16 @llvm.ptx.max(i16, i16) Things change if I define explicitly the i16 intrinsic, like this: def int_ptx_max : Intrinsic<[llvm_i16_ty], [llvm_i16_ty, llvm_i16...

Dear all, During app compilation we have a crash in NVPTX backend: LLVM ERROR: Cannot select: 0x732b270: i64 = ExternalSymbol'__powisf2' [ID=18] As I understand LLVM tries to lower the following call %28 = call ptx_device float @llvm.powi.f32(float 2.000000e+00, i32 %8) nounwind readonly to device intrinsic. The table llvm/IntrinsicsNVVM.td does not contain such intrinsic, however it should be builtin, according to cuda/include/math_functions.h Is my understanding correct, and we need simply add the corresponding...

Dear all, Attached notunrolled.ll is a module containing reduction kernel. What I'm trying to do is to unroll it in such way, that partial reduction on unrolled iterations would be performed on register, and then stored to memory only once. Currently llvm's unroller together with all standard optimizations produce code, which stores value to memory after every unrolled iteration, which is

...gt; >>> >> > >> >> >> >>>> >> > >> >> >> >>>> The test case I am trying is the following: >> > >> >> >> >>>> >> > >> >> >> >>>> define ptx_device float @f(float %x, float %y) { >> > >> >> >> >>>> entry: >> > >> >> >> >>>>  %z = call float @fmax(float %x, float %y) >> > >> >> >> >>>>  ret float %z >> > >> >&gt...

...gt; >>> >> > >> >> >> >>>> >> > >> >> >> >>>> The test case I am trying is the following: >> > >> >> >> >>>> >> > >> >> >> >>>> define ptx_device float @f(float %x, float %y) { >> > >> >> >> >>>> entry: >> > >> >> >> >>>> %z = call float @fmax(float %x, float %y) >> > >> >> >> >>>> ret float %z >> > >> >&gt...