Roll back extern template instatiations in swisstable due to binary size increases in shared libraries.

PiperOrigin-RevId: 615497725
Change-Id: Ic29db8923ea4ea7cd0b01b396896fa9fff8c74b0

1 files changed, 0 insertions, 41 deletions

diff --git a/absl/container/flat_hash_map.h b/absl/container/flat_hash_map.h
index 2f4457d6..a33c794f 100644
--- a/absl/container/flat_hash_map.h
+++ b/absl/container/flat_hash_map.h
@@ -31,20 +31,15 @@
 #define ABSL_CONTAINER_FLAT_HASH_MAP_H_
 
 #include <cstddef>
-#include <cstdint>
-#include <memory>
 #include <new>
-#include <string>
 #include <type_traits>
 #include <utility>
 
 #include "absl/algorithm/container.h"
-#include "absl/base/config.h"
 #include "absl/base/macros.h"
 #include "absl/container/internal/container_memory.h"
 #include "absl/container/internal/hash_function_defaults.h"  // IWYU pragma: export
 #include "absl/container/internal/raw_hash_map.h"  // IWYU pragma: export
-#include "absl/container/internal/raw_hash_set.h"  // IWYU pragma: export
 #include "absl/memory/memory.h"
 
 namespace absl {
@@ -637,42 +632,6 @@ struct IsUnorderedContainer<
 
 }  // namespace container_algorithm_internal
 
-// Explicit template instantiations for common map types in order to decrease
-// linker input size. Note that explicitly instantiating flat_hash_map itself
-// doesn't help because it has no non-alias members. If we need to decrease
-// linker input size more, we could potentially (a) add more key/value types,
-// e.g. string_view/Cord, (b) instantiate some template member functions, e.g.
-// operator[]/find. The EXTERN argument is `extern` for the declaration and
-// empty for the definition.
-#define ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(TEMPLATE, KEY, VALUE) \
-  TEMPLATE class absl::container_internal::raw_hash_map<           \
-      absl::container_internal::FlatHashMapPolicy<KEY, VALUE>,     \
-      absl::container_internal::hash_default_hash<KEY>,            \
-      absl::container_internal::hash_default_eq<KEY>,              \
-      std::allocator<std::pair<const KEY, VALUE>>>;                \
-  TEMPLATE class absl::container_internal::raw_hash_set<           \
-      absl::container_internal::FlatHashMapPolicy<KEY, VALUE>,     \
-      absl::container_internal::hash_default_hash<KEY>,            \
-      absl::container_internal::hash_default_eq<KEY>,              \
-      std::allocator<std::pair<const KEY, VALUE>>>;
-
-// We use exact-width integer types rather than `int`/`long`/`long long` because
-// these are the types recommended in the Google C++ style guide and which are
-// commonly used in Google code.
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, int32_t, int32_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, std::string, int32_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, int32_t, std::string);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, int64_t, int64_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, std::string, int64_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, int64_t, std::string);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, uint32_t, uint32_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, std::string, uint32_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, uint32_t, std::string);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, uint64_t, uint64_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, std::string, uint64_t);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, uint64_t, std::string);
-ABSL_INTERNAL_TEMPLATE_FLAT_HASH_MAP(extern template, std::string, std::string);
-
 ABSL_NAMESPACE_END
 }  // namespace absl