Export of internal Abseil changes.

--
4e224c85c3730398919fc5195cb1fc7a752e6e4f by Mark Barolak <mbar@google.com>:

Update some references to "StringPiece" to say "string_view" instead.

PiperOrigin-RevId: 219693697

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6bdc925a3db5e97f1f8a404bdfda2e47e48f7b9a by Abseil Team <absl-team@google.com>:

Disable weak symbols for the Windows backend of LLVM, since they are currently buggy. See https://bugs.llvm.org/show_bug.cgi?id=37598 for more information.

PiperOrigin-RevId: 219676493

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5823f495036181191f435efa4c45d60ca3160145 by Derek Mauro <dmauro@google.com>:

Don't use the SSE2 implementation of container_internal::Group
with -funsigned-char under GCC.

This is a workaround for https://github.com/abseil/abseil-cpp/issues/209.

_mm_cmpgt_epi8 is broken under GCC with -funsigned-char.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87853

PiperOrigin-RevId: 219666066
GitOrigin-RevId: 4e224c85c3730398919fc5195cb1fc7a752e6e4f
Change-Id: I2f115d0256576cf476ae73a9464c21d4106a2a56

1 files changed, 36 insertions, 31 deletions

diff --git a/absl/container/internal/raw_hash_set_test.cc b/absl/container/internal/raw_hash_set_test.cc
index f48578eb1495..b66a8f16444f 100644
--- a/absl/container/internal/raw_hash_set_test.cc
+++ b/absl/container/internal/raw_hash_set_test.cc
@@ -130,45 +130,50 @@ TEST(Group, EmptyGroup) {
   for (h2_t h = 0; h != 128; ++h) EXPECT_FALSE(Group{EmptyGroup()}.Match(h));
 }
 
-#if SWISSTABLE_HAVE_SSE2
 TEST(Group, Match) {
-  ctrl_t group[] = {kEmpty, 1, kDeleted, 3, kEmpty, 5, kSentinel, 7,
-                    7,      5, 3,        1, 1,      1, 1,         1};
-  EXPECT_THAT(Group{group}.Match(0), ElementsAre());
-  EXPECT_THAT(Group{group}.Match(1), ElementsAre(1, 11, 12, 13, 14, 15));
-  EXPECT_THAT(Group{group}.Match(3), ElementsAre(3, 10));
-  EXPECT_THAT(Group{group}.Match(5), ElementsAre(5, 9));
-  EXPECT_THAT(Group{group}.Match(7), ElementsAre(7, 8));
+  if (Group::kWidth == 16) {
+    ctrl_t group[] = {kEmpty, 1, kDeleted, 3, kEmpty, 5, kSentinel, 7,
+                      7,      5, 3,        1, 1,      1, 1,         1};
+    EXPECT_THAT(Group{group}.Match(0), ElementsAre());
+    EXPECT_THAT(Group{group}.Match(1), ElementsAre(1, 11, 12, 13, 14, 15));
+    EXPECT_THAT(Group{group}.Match(3), ElementsAre(3, 10));
+    EXPECT_THAT(Group{group}.Match(5), ElementsAre(5, 9));
+    EXPECT_THAT(Group{group}.Match(7), ElementsAre(7, 8));
+  } else if (Group::kWidth == 8) {
+    ctrl_t group[] = {kEmpty, 1, 2, kDeleted, 2, 1, kSentinel, 1};
+    EXPECT_THAT(Group{group}.Match(0), ElementsAre());
+    EXPECT_THAT(Group{group}.Match(1), ElementsAre(1, 5, 7));
+    EXPECT_THAT(Group{group}.Match(2), ElementsAre(2, 4));
+  } else {
+    FAIL() << "No test coverage for Group::kWidth==" << Group::kWidth;
+  }
 }
 
 TEST(Group, MatchEmpty) {
-  ctrl_t group[] = {kEmpty, 1, kDeleted, 3, kEmpty, 5, kSentinel, 7,
-                    7,      5, 3,        1, 1,      1, 1,         1};
-  EXPECT_THAT(Group{group}.MatchEmpty(), ElementsAre(0, 4));
-}
-
-TEST(Group, MatchEmptyOrDeleted) {
-  ctrl_t group[] = {kEmpty, 1, kDeleted, 3, kEmpty, 5, kSentinel, 7,
-                    7,      5, 3,        1, 1,      1, 1,         1};
-  EXPECT_THAT(Group{group}.MatchEmptyOrDeleted(), ElementsAre(0, 2, 4));
-}
-#else
-TEST(Group, Match) {
-  ctrl_t group[] = {kEmpty, 1, 2, kDeleted, 2, 1, kSentinel, 1};
-  EXPECT_THAT(Group{group}.Match(0), ElementsAre());
-  EXPECT_THAT(Group{group}.Match(1), ElementsAre(1, 5, 7));
-  EXPECT_THAT(Group{group}.Match(2), ElementsAre(2, 4));
-}
-TEST(Group, MatchEmpty) {
-  ctrl_t group[] = {kEmpty, 1, 2, kDeleted, 2, 1, kSentinel, 1};
-  EXPECT_THAT(Group{group}.MatchEmpty(), ElementsAre(0));
+  if (Group::kWidth == 16) {
+    ctrl_t group[] = {kEmpty, 1, kDeleted, 3, kEmpty, 5, kSentinel, 7,
+                      7,      5, 3,        1, 1,      1, 1,         1};
+    EXPECT_THAT(Group{group}.MatchEmpty(), ElementsAre(0, 4));
+  } else if (Group::kWidth == 8) {
+    ctrl_t group[] = {kEmpty, 1, 2, kDeleted, 2, 1, kSentinel, 1};
+    EXPECT_THAT(Group{group}.MatchEmpty(), ElementsAre(0));
+  } else {
+    FAIL() << "No test coverage for Group::kWidth==" << Group::kWidth;
+  }
 }
 
 TEST(Group, MatchEmptyOrDeleted) {
-  ctrl_t group[] = {kEmpty, 1, 2, kDeleted, 2, 1, kSentinel, 1};
-  EXPECT_THAT(Group{group}.MatchEmptyOrDeleted(), ElementsAre(0, 3));
+  if (Group::kWidth == 16) {
+    ctrl_t group[] = {kEmpty, 1, kDeleted, 3, kEmpty, 5, kSentinel, 7,
+                      7,      5, 3,        1, 1,      1, 1,         1};
+    EXPECT_THAT(Group{group}.MatchEmptyOrDeleted(), ElementsAre(0, 2, 4));
+  } else if (Group::kWidth == 8) {
+    ctrl_t group[] = {kEmpty, 1, 2, kDeleted, 2, 1, kSentinel, 1};
+    EXPECT_THAT(Group{group}.MatchEmptyOrDeleted(), ElementsAre(0, 3));
+  } else {
+    FAIL() << "No test coverage for Group::kWidth==" << Group::kWidth;
+  }
 }
-#endif
 
 TEST(Batch, DropDeletes) {
   constexpr size_t kCapacity = 63;