Export of internal Abseil changes.

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fcf9d3facb12451964ad1850073cbfb6f9739379 by CJ Johnson <johnsoncj@google.com>:

Makes it obvious to readers that the comparison operators do not branch more than needed

PiperOrigin-RevId: 240811527

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680c586f81f805be68e96caffb28d5f46b6a6511 by Jon Cohen <cohenjon@google.com>:

Consistently use "if(" instead of "if (" in CMake files

PiperOrigin-RevId: 240621819

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c4acc506648622389f33f564fd94f8dda08cb61a by Tom Manshreck <shreck@google.com>:

Internal change

PiperOrigin-RevId: 240619556

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ddbc1894944aae96767c876a1ae8696ddaba42a2 by Jon Cohen <cohenjon@google.com>:

Remove the warning about install prefixes when we aren't installing abseil

PiperOrigin-RevId: 240614750

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086c4fad213d99e875038bc8a1c7268e28a7ebf3 by Abseil Team <absl-team@google.com>:

Adjust some tests and test cases which fail on WebAssembly

PiperOrigin-RevId: 240592367

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46c2c09723a37ef4911ae3c64aab92e3f0fdba79 by Abseil Team <absl-team@google.com>:

CMake install target update
- Add prefix absl_ to each target when install rule are disabled.
- Disable all install commands when absl is used as subdirectory (Fix #287)

PiperOrigin-RevId: 240575083

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8d88063ed5b16f982a91950693d37ca18fdd46d8 by Jon Cohen <cohenjon@google.com>:

Correctly link to Threads::Threads for a few cmake targets which were missing it.

PiperOrigin-RevId: 240574513
GitOrigin-RevId: fcf9d3facb12451964ad1850073cbfb6f9739379
Change-Id: I031c57de8cd88554348eb8bd1371d01d15ff1fc7

2 files changed, 34 insertions, 23 deletions

diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index bd4ed6667ad2..0f066860623c 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -847,7 +847,7 @@ class InlinedVector {
 
  private:
   template <typename H, typename TheT, size_t TheN, typename TheA>
-  friend auto AbslHashValue(H h, const InlinedVector<TheT, TheN, TheA>& v) -> H;
+  friend H AbslHashValue(H h, const absl::InlinedVector<TheT, TheN, TheA>& a);
 
   const Tag& tag() const { return storage_.allocator_and_tag_.tag(); }
 
@@ -1231,8 +1231,8 @@ class InlinedVector {
 // Swaps the contents of two inlined vectors. This convenience function
 // simply calls `InlinedVector::swap()`.
 template <typename T, size_t N, typename A>
-auto swap(InlinedVector<T, N, A>& a,
-          InlinedVector<T, N, A>& b) noexcept(noexcept(a.swap(b))) -> void {
+void swap(absl::InlinedVector<T, N, A>& a,
+          absl::InlinedVector<T, N, A>& b) noexcept(noexcept(a.swap(b))) {
   a.swap(b);
 }
 
@@ -1240,17 +1240,21 @@ auto swap(InlinedVector<T, N, A>& a,
 //
 // Tests the equivalency of the contents of two inlined vectors.
 template <typename T, size_t N, typename A>
-auto operator==(const InlinedVector<T, N, A>& a,
-                const InlinedVector<T, N, A>& b) -> bool {
-  return absl::equal(a.begin(), a.end(), b.begin(), b.end());
+bool operator==(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
+  auto a_data = a.data();
+  auto a_size = a.size();
+  auto b_data = b.data();
+  auto b_size = b.size();
+  return absl::equal(a_data, a_data + a_size, b_data, b_data + b_size);
 }
 
 // `operator!=()`
 //
 // Tests the inequality of the contents of two inlined vectors.
 template <typename T, size_t N, typename A>
-auto operator!=(const InlinedVector<T, N, A>& a,
-                const InlinedVector<T, N, A>& b) -> bool {
+bool operator!=(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
   return !(a == b);
 }
 
@@ -1259,9 +1263,14 @@ auto operator!=(const InlinedVector<T, N, A>& a,
 // Tests whether the contents of one inlined vector are less than the contents
 // of another through a lexicographical comparison operation.
 template <typename T, size_t N, typename A>
-auto operator<(const InlinedVector<T, N, A>& a, const InlinedVector<T, N, A>& b)
-    -> bool {
-  return std::lexicographical_compare(a.begin(), a.end(), b.begin(), b.end());
+bool operator<(const absl::InlinedVector<T, N, A>& a,
+               const absl::InlinedVector<T, N, A>& b) {
+  auto a_data = a.data();
+  auto a_size = a.size();
+  auto b_data = b.data();
+  auto b_size = b.size();
+  return std::lexicographical_compare(a_data, a_data + a_size, b_data,
+                                      b_data + b_size);
 }
 
 // `operator>()`
@@ -1269,8 +1278,8 @@ auto operator<(const InlinedVector<T, N, A>& a, const InlinedVector<T, N, A>& b)
 // Tests whether the contents of one inlined vector are greater than the
 // contents of another through a lexicographical comparison operation.
 template <typename T, size_t N, typename A>
-auto operator>(const InlinedVector<T, N, A>& a, const InlinedVector<T, N, A>& b)
-    -> bool {
+bool operator>(const absl::InlinedVector<T, N, A>& a,
+               const absl::InlinedVector<T, N, A>& b) {
   return b < a;
 }
 
@@ -1279,8 +1288,8 @@ auto operator>(const InlinedVector<T, N, A>& a, const InlinedVector<T, N, A>& b)
 // Tests whether the contents of one inlined vector are less than or equal to
 // the contents of another through a lexicographical comparison operation.
 template <typename T, size_t N, typename A>
-auto operator<=(const InlinedVector<T, N, A>& a,
-                const InlinedVector<T, N, A>& b) -> bool {
+bool operator<=(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
   return !(b < a);
 }
 
@@ -1289,8 +1298,8 @@ auto operator<=(const InlinedVector<T, N, A>& a,
 // Tests whether the contents of one inlined vector are greater than or equal to
 // the contents of another through a lexicographical comparison operation.
 template <typename T, size_t N, typename A>
-auto operator>=(const InlinedVector<T, N, A>& a,
-                const InlinedVector<T, N, A>& b) -> bool {
+bool operator>=(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
   return !(a < b);
 }
 
@@ -1299,11 +1308,13 @@ auto operator>=(const InlinedVector<T, N, A>& a,
 // Provides `absl::Hash` support for inlined vectors. You do not normally call
 // this function directly.
 template <typename H, typename TheT, size_t TheN, typename TheA>
-auto AbslHashValue(H h, const InlinedVector<TheT, TheN, TheA>& v) -> H {
-  auto p = v.data();
-  auto n = v.size();
-  return H::combine(H::combine_contiguous(std::move(h), p, n), n);
+H AbslHashValue(H h, const absl::InlinedVector<TheT, TheN, TheA>& a) {
+  auto a_data = a.data();
+  auto a_size = a.size();
+  return H::combine(H::combine_contiguous(std::move(h), a_data, a_size),
+                    a_size);
 }
+
 }  // namespace absl
 
 #endif  // ABSL_CONTAINER_INLINED_VECTOR_H_
diff --git a/absl/container/internal/raw_hash_set_test.cc b/absl/container/internal/raw_hash_set_test.cc
index 4d94f7853219..7d96ed90be9c 100644
--- a/absl/container/internal/raw_hash_set_test.cc
+++ b/absl/container/internal/raw_hash_set_test.cc
@@ -414,10 +414,10 @@ TEST(Table, Prefetch) {
   t.prefetch(2);
 
   // Do not run in debug mode, when prefetch is not implemented, or when
-  // sanitizers are enabled.
+  // sanitizers are enabled, or on WebAssembly.
 #if defined(NDEBUG) && defined(__GNUC__) && !defined(ADDRESS_SANITIZER) && \
     !defined(MEMORY_SANITIZER) && !defined(THREAD_SANITIZER) &&            \
-    !defined(UNDEFINED_BEHAVIOR_SANITIZER)
+    !defined(UNDEFINED_BEHAVIOR_SANITIZER) && !defined(__EMSCRIPTEN__)
   const auto now = [] { return absl::base_internal::CycleClock::Now(); };
 
   // Make size enough to not fit in L2 cache (16.7 Mb)