[llvm] MCExpr-ify amd_kernel_code_t (PR #91587)

[Matt Arsenault via llvm-commits]

================
@@ -7,29 +7,84 @@
 //===----------------------------------------------------------------------===//
 //
 /// \file AMDKernelCodeTUtils.h
+/// MC layer struct for AMDGPUMCKernelCodeT, provides MCExpr functionality where
+/// required.
+///
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_LIB_TARGET_AMDGPU_UTILS_AMDKERNELCODETUTILS_H
-#define LLVM_LIB_TARGET_AMDGPU_UTILS_AMDKERNELCODETUTILS_H
+#ifndef LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCKERNELCODET_H
+#define LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCKERNELCODET_H
 
-struct amd_kernel_code_t;
+#include "AMDKernelCodeT.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
 
 namespace llvm {
-
 class MCAsmParser;
+class MCContext;
+class MCExpr;
+class MCStreamer;
+class MCSubtargetInfo;
 class raw_ostream;
-class StringRef;
+namespace AMDGPU {
+
+struct AMDGPUMCKernelCodeT {
+  AMDGPUMCKernelCodeT() = default;
+
+  uint32_t amd_kernel_code_version_major = 0;
+  uint32_t amd_kernel_code_version_minor = 0;
+  uint16_t amd_machine_kind = 0;
+  uint16_t amd_machine_version_major = 0;
+  uint16_t amd_machine_version_minor = 0;
+  uint16_t amd_machine_version_stepping = 0;
+  int64_t kernel_code_entry_byte_offset = 0;
+  int64_t kernel_code_prefetch_byte_offset = 0;
+  uint64_t kernel_code_prefetch_byte_size = 0;
+  uint64_t reserved0 = 0;
+  uint64_t compute_pgm_resource_registers = 0;
+  uint32_t code_properties = 0;
+  uint32_t workgroup_group_segment_byte_size = 0;
+  uint32_t gds_segment_byte_size = 0;
+  uint64_t kernarg_segment_byte_size = 0;
+  uint32_t workgroup_fbarrier_count = 0;
+  uint16_t reserved_vgpr_first = 0;
+  uint16_t reserved_vgpr_count = 0;
+  uint16_t reserved_sgpr_first = 0;
+  uint16_t reserved_sgpr_count = 0;
+  uint16_t debug_wavefront_private_segment_offset_sgpr = 0;
+  uint16_t debug_private_segment_buffer_sgpr = 0;
+  uint8_t kernarg_segment_alignment = 0;
+  uint8_t group_segment_alignment = 0;
+  uint8_t private_segment_alignment = 0;
+  uint8_t wavefront_size = 0;
+  int32_t call_convention = 0;
+  uint8_t reserved3[12] = {0};
+  uint64_t runtime_loader_kernel_symbol = 0;
+  uint64_t control_directives[16] = {0};
+
+  const MCExpr *compute_pgm_resource1_registers = nullptr;
+  const MCExpr *compute_pgm_resource2_registers = nullptr;
+
+  // Duplicated fields, but uses MCExpr instead.
+  // Name has to be the same as the ones used in AMDKernelCodeTInfo.h.
----------------
arsenm wrote:

Outdated comment? 

https://github.com/llvm/llvm-project/pull/91587