[lldb] Remove CompilerType::GetIndexOfFieldWithName (#135963)

This patch removes the unused `CompilerType::GetIndexOfFieldWithName` API (it wasn't used apart from in a single testcase). Given we have so many similarly named APIs already, it's best not to maintain this API that's not really used (and isnt tested).

Author: charles-zablit

lldb/include/lldb/Symbol/CompilerType.h

@@ -433,12 +433,6 @@ class CompilerType {
 
   CompilerDecl GetStaticFieldWithName(llvm::StringRef name) const;
 
-  uint32_t GetIndexOfFieldWithName(const char *name,
-                                   CompilerType *field_compiler_type = nullptr,
-                                   uint64_t *bit_offset_ptr = nullptr,
-                                   uint32_t *bitfield_bit_size_ptr = nullptr,
-                                   bool *is_bitfield_ptr = nullptr) const;
-
   llvm::Expected<CompilerType> GetChildCompilerTypeAtIndex(
       ExecutionContext *exe_ctx, size_t idx, bool transparent_pointers,
       bool omit_empty_base_classes, bool ignore_array_bounds,

lldb/source/Symbol/CompilerType.cpp

@@ -893,25 +893,6 @@ CompilerDecl CompilerType::GetStaticFieldWithName(llvm::StringRef name) const {
   return CompilerDecl();
 }
 
-uint32_t CompilerType::GetIndexOfFieldWithName(
-    const char *name, CompilerType *field_compiler_type_ptr,
-    uint64_t *bit_offset_ptr, uint32_t *bitfield_bit_size_ptr,
-    bool *is_bitfield_ptr) const {
-  unsigned count = GetNumFields();
-  std::string field_name;
-  for (unsigned index = 0; index < count; index++) {
-    CompilerType field_compiler_type(
-        GetFieldAtIndex(index, field_name, bit_offset_ptr,
-                        bitfield_bit_size_ptr, is_bitfield_ptr));
-    if (strcmp(field_name.c_str(), name) == 0) {
-      if (field_compiler_type_ptr)
-        *field_compiler_type_ptr = field_compiler_type;
-      return index;
-    }
-  }
-  return UINT32_MAX;
-}
-
 llvm::Expected<CompilerType> CompilerType::GetChildCompilerTypeAtIndex(
     ExecutionContext *exe_ctx, size_t idx, bool transparent_pointers,
     bool omit_empty_base_classes, bool ignore_array_bounds,

lldb/unittests/Platform/PlatformSiginfoTest.cpp

@@ -60,9 +60,11 @@ class PlatformSiginfoTest : public ::testing::Test {
     uint64_t total_offset = 0;
     for (auto field_name : llvm::split(path, '.')) {
       uint64_t bit_offset;
-      ASSERT_NE(field_type.GetIndexOfFieldWithName(field_name.str().c_str(),
-                                                   &field_type, &bit_offset),
-                UINT32_MAX);
+      std::string name;
+      field_type = field_type.GetFieldAtIndex(
+          field_type.GetIndexOfChildWithName(field_name, false), name,
+          &bit_offset, nullptr, nullptr);
+      ASSERT_TRUE(field_type);
       total_offset += bit_offset;
     }