vendor/llvm/llvm-trunk-r321017

1 files changed, 139 insertions, 0 deletions

diff --git a/include/llvm/Support/AMDGPUKernelDescriptor.h b/include/llvm/Support/AMDGPUKernelDescriptor.h
new file mode 100644
index 000000000000..ce2c0c1c959e
--- /dev/null
+++ b/include/llvm/Support/AMDGPUKernelDescriptor.h
@@ -0,0 +1,139 @@
+//===--- AMDGPUKernelDescriptor.h -------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// \brief AMDGPU kernel descriptor definitions. For more information, visit
+/// https://llvm.org/docs/AMDGPUUsage.html#kernel-descriptor-for-gfx6-gfx9
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_AMDGPUKERNELDESCRIPTOR_H
+#define LLVM_SUPPORT_AMDGPUKERNELDESCRIPTOR_H
+
+#include <cstdint>
+
+// Creates enumeration entries used for packing bits into integers. Enumeration
+// entries include bit shift amount, bit width, and bit mask.
+#define AMDGPU_BITS_ENUM_ENTRY(name, shift, width) \
+  name ## _SHIFT = (shift),                        \
+  name ## _WIDTH = (width),                        \
+  name = (((1 << (width)) - 1) << (shift))         \
+
+// Gets bits for specified bit mask from specified source.
+#define AMDGPU_BITS_GET(src, mask) \
+  ((src & mask) >> mask ## _SHIFT) \
+
+// Sets bits for specified bit mask in specified destination.
+#define AMDGPU_BITS_SET(dst, mask, val)     \
+  dst &= (~(1 << mask ## _SHIFT) & ~mask);  \
+  dst |= (((val) << mask ## _SHIFT) & mask) \
+
+namespace llvm {
+namespace AMDGPU {
+namespace HSAKD {
+
+/// \brief Floating point rounding modes.
+enum : uint8_t {
+  AMDGPU_FLOAT_ROUND_MODE_NEAR_EVEN      = 0,
+  AMDGPU_FLOAT_ROUND_MODE_PLUS_INFINITY  = 1,
+  AMDGPU_FLOAT_ROUND_MODE_MINUS_INFINITY = 2,
+  AMDGPU_FLOAT_ROUND_MODE_ZERO           = 3,
+};
+
+/// \brief Floating point denorm modes.
+enum : uint8_t {
+  AMDGPU_FLOAT_DENORM_MODE_FLUSH_SRC_DST = 0,
+  AMDGPU_FLOAT_DENORM_MODE_FLUSH_DST     = 1,
+  AMDGPU_FLOAT_DENORM_MODE_FLUSH_SRC     = 2,
+  AMDGPU_FLOAT_DENORM_MODE_FLUSH_NONE    = 3,
+};
+
+/// \brief System VGPR workitem IDs.
+enum : uint8_t {
+  AMDGPU_SYSTEM_VGPR_WORKITEM_ID_X         = 0,
+  AMDGPU_SYSTEM_VGPR_WORKITEM_ID_X_Y       = 1,
+  AMDGPU_SYSTEM_VGPR_WORKITEM_ID_X_Y_Z     = 2,
+  AMDGPU_SYSTEM_VGPR_WORKITEM_ID_UNDEFINED = 3,
+};
+
+/// \brief Compute program resource register one layout.
+enum ComputePgmRsrc1 {
+  AMDGPU_BITS_ENUM_ENTRY(GRANULATED_WORKITEM_VGPR_COUNT, 0, 6),
+  AMDGPU_BITS_ENUM_ENTRY(GRANULATED_WAVEFRONT_SGPR_COUNT, 6, 4),
+  AMDGPU_BITS_ENUM_ENTRY(PRIORITY, 10, 2),
+  AMDGPU_BITS_ENUM_ENTRY(FLOAT_ROUND_MODE_32, 12, 2),
+  AMDGPU_BITS_ENUM_ENTRY(FLOAT_ROUND_MODE_16_64, 14, 2),
+  AMDGPU_BITS_ENUM_ENTRY(FLOAT_DENORM_MODE_32, 16, 2),
+  AMDGPU_BITS_ENUM_ENTRY(FLOAT_DENORM_MODE_16_64, 18, 2),
+  AMDGPU_BITS_ENUM_ENTRY(PRIV, 20, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_DX10_CLAMP, 21, 1),
+  AMDGPU_BITS_ENUM_ENTRY(DEBUG_MODE, 22, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_IEEE_MODE, 23, 1),
+  AMDGPU_BITS_ENUM_ENTRY(BULKY, 24, 1),
+  AMDGPU_BITS_ENUM_ENTRY(CDBG_USER, 25, 1),
+  AMDGPU_BITS_ENUM_ENTRY(FP16_OVFL, 26, 1),
+  AMDGPU_BITS_ENUM_ENTRY(RESERVED0, 27, 5),
+};
+
+/// \brief Compute program resource register two layout.
+enum ComputePgmRsrc2 {
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_SGPR_PRIVATE_SEGMENT_WAVE_OFFSET, 0, 1),
+  AMDGPU_BITS_ENUM_ENTRY(USER_SGPR_COUNT, 1, 5),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_TRAP_HANDLER, 6, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_SGPR_WORKGROUP_ID_X, 7, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_SGPR_WORKGROUP_ID_Y, 8, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_SGPR_WORKGROUP_ID_Z, 9, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_SGPR_WORKGROUP_INFO, 10, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_VGPR_WORKITEM_ID, 11, 2),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_ADDRESS_WATCH, 13, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_MEMORY, 14, 1),
+  AMDGPU_BITS_ENUM_ENTRY(GRANULATED_LDS_SIZE, 15, 9),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_IEEE_754_FP_INVALID_OPERATION, 24, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_FP_DENORMAL_SOURCE, 25, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_IEEE_754_FP_DIVISION_BY_ZERO, 26, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_IEEE_754_FP_OVERFLOW, 27, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_IEEE_754_FP_UNDERFLOW, 28, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_IEEE_754_FP_INEXACT, 29, 1),
+  AMDGPU_BITS_ENUM_ENTRY(ENABLE_EXCEPTION_INT_DIVIDE_BY_ZERO, 30, 1),
+  AMDGPU_BITS_ENUM_ENTRY(RESERVED1, 31, 1),
+};
+
+/// \brief Kernel descriptor layout. This layout should be kept backwards
+/// compatible as it is consumed by the command processor.
+struct KernelDescriptor final {
+  uint32_t GroupSegmentFixedSize;
+  uint32_t PrivateSegmentFixedSize;
+  uint32_t MaxFlatWorkGroupSize;
+  uint64_t IsDynamicCallStack : 1;
+  uint64_t IsXNACKEnabled : 1;
+  uint64_t Reserved0 : 30;
+  int64_t KernelCodeEntryByteOffset;
+  uint64_t Reserved1[3];
+  uint32_t ComputePgmRsrc1;
+  uint32_t ComputePgmRsrc2;
+  uint64_t EnableSGPRPrivateSegmentBuffer : 1;
+  uint64_t EnableSGPRDispatchPtr : 1;
+  uint64_t EnableSGPRQueuePtr : 1;
+  uint64_t EnableSGPRKernargSegmentPtr : 1;
+  uint64_t EnableSGPRDispatchID : 1;
+  uint64_t EnableSGPRFlatScratchInit : 1;
+  uint64_t EnableSGPRPrivateSegmentSize : 1;
+  uint64_t EnableSGPRGridWorkgroupCountX : 1;
+  uint64_t EnableSGPRGridWorkgroupCountY : 1;
+  uint64_t EnableSGPRGridWorkgroupCountZ : 1;
+  uint64_t Reserved2 : 54;
+
+  KernelDescriptor() = default;
+};
+
+} // end namespace HSAKD
+} // end namespace AMDGPU
+} // end namespace llvm
+
+#endif // LLVM_SUPPORT_AMDGPUKERNELDESCRIPTOR_H