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Each SM and PTX version is modeled as a subtarget feature/CPU. Additionally, PTX 3.1 is added as the default PTX version to be out-of-the-box compatible with CUDA 5.0. Available CPUs for this target: sm_10 - Select the sm_10 processor. sm_11 - Select the sm_11 processor. sm_12 - Select the sm_12 processor. sm_13 - Select the sm_13 processor. sm_20 - Select the sm_20 processor. sm_21 - Select the sm_21 processor. sm_30 - Select the sm_30 processor. sm_35 - Select the sm_35 processor. Available features for this target: ptx30 - Use PTX version 3.0. ptx31 - Use PTX version 3.1. sm_10 - Target SM 1.0. sm_11 - Target SM 1.1. sm_12 - Target SM 1.2. sm_13 - Target SM 1.3. sm_20 - Target SM 2.0. sm_21 - Target SM 2.1. sm_30 - Target SM 3.0. sm_35 - Target SM 3.5. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167699 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
//===- NVPTXSubtarget.cpp - NVPTX Subtarget Information -------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the NVPTX specific subclass of TargetSubtarget.
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//
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//===----------------------------------------------------------------------===//
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#include "NVPTXSubtarget.h"
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#define GET_SUBTARGETINFO_ENUM
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#define GET_SUBTARGETINFO_TARGET_DESC
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#define GET_SUBTARGETINFO_CTOR
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#include "NVPTXGenSubtargetInfo.inc"
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using namespace llvm;
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// Select Driver Interface
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#include "llvm/Support/CommandLine.h"
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namespace {
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cl::opt<NVPTX::DrvInterface>
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DriverInterface(cl::desc("Choose driver interface:"),
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cl::values(
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clEnumValN(NVPTX::NVCL, "drvnvcl", "Nvidia OpenCL driver"),
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clEnumValN(NVPTX::CUDA, "drvcuda", "Nvidia CUDA driver"),
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clEnumValN(NVPTX::TEST, "drvtest", "Plain Test"),
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clEnumValEnd),
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cl::init(NVPTX::NVCL));
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}
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NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
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const std::string &FS, bool is64Bit)
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: NVPTXGenSubtargetInfo(TT, CPU, FS),
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Is64Bit(is64Bit),
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PTXVersion(0),
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SmVersion(10) {
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drvInterface = DriverInterface;
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// Provide the default CPU if none
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std::string defCPU = "sm_10";
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ParseSubtargetFeatures((CPU.empty() ? defCPU : CPU), FS);
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// Get the TargetName from the FS if available
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if (FS.empty() && CPU.empty())
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TargetName = defCPU;
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else if (!CPU.empty())
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TargetName = CPU;
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else
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llvm_unreachable("we are not using FeatureStr");
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// We default to PTX 3.1, but we cannot just default to it in the initializer
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// since the attribute parser checks if the given option is >= the default.
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// So if we set ptx31 as the default, the ptx30 attribute would never match.
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// Instead, we use 0 as the default and manually set 31 if the default is
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// used.
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if (PTXVersion == 0) {
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PTXVersion = 31;
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}
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}
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