lib/Target/AMDGPU/AMDGPUMachineFunction.h

   1 //===-- AMDGPUMachineFunctionInfo.h -------------------------------*- C++ -*-=//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUMACHINEFUNCTION_H
  10 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUMACHINEFUNCTION_H
  11
  12 #include "llvm/ADT/DenseMap.h"
  13 #include "llvm/CodeGen/MachineFunction.h"
  14
  15 namespace llvm {
  16
  17 class GCNSubtarget;
  18
  19 class AMDGPUMachineFunction : public MachineFunctionInfo {
  20   /// A map to keep track of local memory objects and their offsets within the
  21   /// local memory space.
  22   SmallDenseMap<const GlobalValue *, unsigned, 4> LocalMemoryObjects;
  23
  24 protected:
  25   uint64_t ExplicitKernArgSize; // Cache for this.
  26   Align MaxKernArgAlign;        // Cache for this.
  27
  28   /// Number of bytes in the LDS that are being used.
  29   unsigned LDSSize;
  30
  31   // Kernels + shaders. i.e. functions called by the driver and not called
  32   // by other functions.
  33   bool IsEntryFunction;
  34
  35   bool NoSignedZerosFPMath;
  36
  37   // Function may be memory bound.
  38   bool MemoryBound;
  39
  40   // Kernel may need limited waves per EU for better performance.
  41   bool WaveLimiter;
  42
  43 public:
  44   AMDGPUMachineFunction(const MachineFunction &MF);
  45
  46   uint64_t getExplicitKernArgSize() const {
  47     return ExplicitKernArgSize;
  48   }
  49
  50   unsigned getMaxKernArgAlign() const { return MaxKernArgAlign.value(); }
  51
  52   unsigned getLDSSize() const {
  53     return LDSSize;
  54   }
  55
  56   bool isEntryFunction() const {
  57     return IsEntryFunction;
  58   }
  59
  60   bool hasNoSignedZerosFPMath() const {
  61     return NoSignedZerosFPMath;
  62   }
  63
  64   bool isMemoryBound() const {
  65     return MemoryBound;
  66   }
  67
  68   bool needsWaveLimiter() const {
  69     return WaveLimiter;
  70   }
  71
  72   unsigned allocateLDSGlobal(const DataLayout &DL, const GlobalValue &GV);
  73 };
  74
  75 }
  76 #endif