chore(3p/abseil_cpp): unvendor abseil_cpp r/3786

we weren't actually using these sources anymore, okay?

Change-Id: If701571d9716de308d3512e1eb22c35db0877a66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5248
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 219 deletions

diff --git a/third_party/abseil_cpp/absl/base/internal/bits.h b/third_party/abseil_cpp/absl/base/internal/bits.h
deleted file mode 100644
index 81648e2c3957..000000000000
--- a/third_party/abseil_cpp/absl/base/internal/bits.h
+++ /dev/null
@@ -1,219 +0,0 @@
-// Copyright 2018 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef ABSL_BASE_INTERNAL_BITS_H_
-#define ABSL_BASE_INTERNAL_BITS_H_
-
-// This file contains bitwise ops which are implementation details of various
-// absl libraries.
-
-#include <cstdint>
-
-#include "absl/base/config.h"
-
-// Clang on Windows has __builtin_clzll; otherwise we need to use the
-// windows intrinsic functions.
-#if defined(_MSC_VER) && !defined(__clang__)
-#include <intrin.h>
-#if defined(_M_X64)
-#pragma intrinsic(_BitScanReverse64)
-#pragma intrinsic(_BitScanForward64)
-#endif
-#pragma intrinsic(_BitScanReverse)
-#pragma intrinsic(_BitScanForward)
-#endif
-
-#include "absl/base/attributes.h"
-
-#if defined(_MSC_VER) && !defined(__clang__)
-// We can achieve something similar to attribute((always_inline)) with MSVC by
-// using the __forceinline keyword, however this is not perfect. MSVC is
-// much less aggressive about inlining, and even with the __forceinline keyword.
-#define ABSL_BASE_INTERNAL_FORCEINLINE __forceinline
-#else
-// Use default attribute inline.
-#define ABSL_BASE_INTERNAL_FORCEINLINE inline ABSL_ATTRIBUTE_ALWAYS_INLINE
-#endif
-
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace base_internal {
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros64Slow(uint64_t n) {
-  int zeroes = 60;
-  if (n >> 32) {
-    zeroes -= 32;
-    n >>= 32;
-  }
-  if (n >> 16) {
-    zeroes -= 16;
-    n >>= 16;
-  }
-  if (n >> 8) {
-    zeroes -= 8;
-    n >>= 8;
-  }
-  if (n >> 4) {
-    zeroes -= 4;
-    n >>= 4;
-  }
-  return "\4\3\2\2\1\1\1\1\0\0\0\0\0\0\0"[n] + zeroes;
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros64(uint64_t n) {
-#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_X64)
-  // MSVC does not have __buitin_clzll. Use _BitScanReverse64.
-  unsigned long result = 0;  // NOLINT(runtime/int)
-  if (_BitScanReverse64(&result, n)) {
-    return 63 - result;
-  }
-  return 64;
-#elif defined(_MSC_VER) && !defined(__clang__)
-  // MSVC does not have __buitin_clzll. Compose two calls to _BitScanReverse
-  unsigned long result = 0;  // NOLINT(runtime/int)
-  if ((n >> 32) &&
-      _BitScanReverse(&result, static_cast<unsigned long>(n >> 32))) {
-    return 31 - result;
-  }
-  if (_BitScanReverse(&result, static_cast<unsigned long>(n))) {
-    return 63 - result;
-  }
-  return 64;
-#elif defined(__GNUC__) || defined(__clang__)
-  // Use __builtin_clzll, which uses the following instructions:
-  //  x86: bsr
-  //  ARM64: clz
-  //  PPC: cntlzd
-  static_assert(sizeof(unsigned long long) == sizeof(n),  // NOLINT(runtime/int)
-                "__builtin_clzll does not take 64-bit arg");
-
-  // Handle 0 as a special case because __builtin_clzll(0) is undefined.
-  if (n == 0) {
-    return 64;
-  }
-  return __builtin_clzll(n);
-#else
-  return CountLeadingZeros64Slow(n);
-#endif
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros32Slow(uint64_t n) {
-  int zeroes = 28;
-  if (n >> 16) {
-    zeroes -= 16;
-    n >>= 16;
-  }
-  if (n >> 8) {
-    zeroes -= 8;
-    n >>= 8;
-  }
-  if (n >> 4) {
-    zeroes -= 4;
-    n >>= 4;
-  }
-  return "\4\3\2\2\1\1\1\1\0\0\0\0\0\0\0"[n] + zeroes;
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros32(uint32_t n) {
-#if defined(_MSC_VER) && !defined(__clang__)
-  unsigned long result = 0;  // NOLINT(runtime/int)
-  if (_BitScanReverse(&result, n)) {
-    return 31 - result;
-  }
-  return 32;
-#elif defined(__GNUC__) || defined(__clang__)
-  // Use __builtin_clz, which uses the following instructions:
-  //  x86: bsr
-  //  ARM64: clz
-  //  PPC: cntlzd
-  static_assert(sizeof(int) == sizeof(n),
-                "__builtin_clz does not take 32-bit arg");
-
-  // Handle 0 as a special case because __builtin_clz(0) is undefined.
-  if (n == 0) {
-    return 32;
-  }
-  return __builtin_clz(n);
-#else
-  return CountLeadingZeros32Slow(n);
-#endif
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero64Slow(uint64_t n) {
-  int c = 63;
-  n &= ~n + 1;
-  if (n & 0x00000000FFFFFFFF) c -= 32;
-  if (n & 0x0000FFFF0000FFFF) c -= 16;
-  if (n & 0x00FF00FF00FF00FF) c -= 8;
-  if (n & 0x0F0F0F0F0F0F0F0F) c -= 4;
-  if (n & 0x3333333333333333) c -= 2;
-  if (n & 0x5555555555555555) c -= 1;
-  return c;
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero64(uint64_t n) {
-#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_X64)
-  unsigned long result = 0;  // NOLINT(runtime/int)
-  _BitScanForward64(&result, n);
-  return result;
-#elif defined(_MSC_VER) && !defined(__clang__)
-  unsigned long result = 0;  // NOLINT(runtime/int)
-  if (static_cast<uint32_t>(n) == 0) {
-    _BitScanForward(&result, static_cast<unsigned long>(n >> 32));
-    return result + 32;
-  }
-  _BitScanForward(&result, static_cast<unsigned long>(n));
-  return result;
-#elif defined(__GNUC__) || defined(__clang__)
-  static_assert(sizeof(unsigned long long) == sizeof(n),  // NOLINT(runtime/int)
-                "__builtin_ctzll does not take 64-bit arg");
-  return __builtin_ctzll(n);
-#else
-  return CountTrailingZerosNonZero64Slow(n);
-#endif
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero32Slow(uint32_t n) {
-  int c = 31;
-  n &= ~n + 1;
-  if (n & 0x0000FFFF) c -= 16;
-  if (n & 0x00FF00FF) c -= 8;
-  if (n & 0x0F0F0F0F) c -= 4;
-  if (n & 0x33333333) c -= 2;
-  if (n & 0x55555555) c -= 1;
-  return c;
-}
-
-ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero32(uint32_t n) {
-#if defined(_MSC_VER) && !defined(__clang__)
-  unsigned long result = 0;  // NOLINT(runtime/int)
-  _BitScanForward(&result, n);
-  return result;
-#elif defined(__GNUC__) || defined(__clang__)
-  static_assert(sizeof(int) == sizeof(n),
-                "__builtin_ctz does not take 32-bit arg");
-  return __builtin_ctz(n);
-#else
-  return CountTrailingZerosNonZero32Slow(n);
-#endif
-}
-
-#undef ABSL_BASE_INTERNAL_FORCEINLINE
-
-}  // namespace base_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_BASE_INTERNAL_BITS_H_