Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 631 insertions, 0 deletions

diff --git a/mfbt/tests/TestSIMD.cpp b/mfbt/tests/TestSIMD.cpp
new file mode 100644
index 0000000000..23dc8b0117
--- /dev/null
+++ b/mfbt/tests/TestSIMD.cpp
@@ -0,0 +1,631 @@
+/* -*- Mode: C++; tab-width: 9; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Assertions.h"
+#include "mozilla/SIMD.h"
+
+using mozilla::SIMD;
+
+void TestTinyString() {
+  const char* test = "012\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '0', 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '0', 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '1', 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '1', 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '2', 3) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '2', 3) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '\n', 3) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '\n', 3) == nullptr);
+}
+
+void TestShortString() {
+  const char* test = "0123456789\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '0', 10) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '0', 10) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '1', 10) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '1', 10) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '2', 10) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '2', 10) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '3', 10) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '3', 10) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '4', 10) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '4', 10) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '5', 10) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '5', 10) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '6', 10) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '6', 10) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '7', 10) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '7', 10) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '8', 10) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '8', 10) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '9', 10) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '9', 10) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '\n', 10) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '\n', 10) == nullptr);
+}
+
+void TestMediumString() {
+  const char* test = "0123456789abcdef\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '0', 16) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '0', 16) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '1', 16) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '1', 16) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '2', 16) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '2', 16) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '3', 16) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '3', 16) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '4', 16) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '4', 16) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '5', 16) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '5', 16) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '6', 16) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '6', 16) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '7', 16) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '7', 16) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '8', 16) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '8', 16) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '9', 16) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '9', 16) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, 'a', 16) == test + 0xa);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, 'a', 16) == test + 0xa);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, 'b', 16) == test + 0xb);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, 'b', 16) == test + 0xb);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, 'c', 16) == test + 0xc);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, 'c', 16) == test + 0xc);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, 'd', 16) == test + 0xd);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, 'd', 16) == test + 0xd);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, 'e', 16) == test + 0xe);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, 'e', 16) == test + 0xe);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, 'f', 16) == test + 0xf);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, 'f', 16) == test + 0xf);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8(test, '\n', 16) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test, '\n', 16) == nullptr);
+}
+
+void TestLongString() {
+  // NOTE: here we make sure we go all the way up to 256 to ensure we're
+  // handling negative-valued chars appropriately. We don't need to bother
+  // testing this side of things with char16_t's because they are very
+  // sensibly guaranteed to be unsigned.
+  const size_t count = 256;
+  char test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = static_cast<char>(i);
+  }
+
+  for (size_t i = 0; i < count - 1; ++i) {
+    MOZ_RELEASE_ASSERT(SIMD::memchr8(test, static_cast<char>(i), count - 1) ==
+                       test + i);
+    MOZ_RELEASE_ASSERT(
+        SIMD::memchr8SSE2(test, static_cast<char>(i), count - 1) == test + i);
+  }
+  MOZ_RELEASE_ASSERT(
+      SIMD::memchr8(test, static_cast<char>(count - 1), count - 1) == nullptr);
+}
+
+void TestGauntlet() {
+  const size_t count = 256;
+  char test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = static_cast<char>(i);
+  }
+
+  for (size_t i = 0; i < count - 1; ++i) {
+    for (size_t j = 0; j < count - 1; ++j) {
+      for (size_t k = 0; k < count - 1; ++k) {
+        if (i >= k) {
+          const char* expected = nullptr;
+          if (j >= k && j < i) {
+            expected = test + j;
+          }
+          MOZ_RELEASE_ASSERT(
+              SIMD::memchr8(test + k, static_cast<char>(j), i - k) == expected);
+          MOZ_RELEASE_ASSERT(SIMD::memchr8SSE2(test + k, static_cast<char>(j),
+                                               i - k) == expected);
+        }
+      }
+    }
+  }
+}
+
+void TestTinyString16() {
+  const char16_t* test = u"012\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'0', 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'0', 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'1', 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'1', 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'2', 3) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'2', 3) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'\n', 3) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'\n', 3) == nullptr);
+}
+
+void TestShortString16() {
+  const char16_t* test = u"0123456789\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'0', 10) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'0', 10) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'1', 10) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'1', 10) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'2', 10) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'2', 10) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'3', 10) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'3', 10) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'4', 10) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'4', 10) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'5', 10) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'5', 10) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'6', 10) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'6', 10) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'7', 10) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'7', 10) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'8', 10) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'8', 10) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'9', 10) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'9', 10) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'\n', 10) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'\n', 10) == nullptr);
+}
+
+void TestMediumString16() {
+  const char16_t* test = u"0123456789abcdef\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'0', 16) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'0', 16) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'1', 16) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'1', 16) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'2', 16) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'2', 16) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'3', 16) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'3', 16) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'4', 16) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'4', 16) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'5', 16) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'5', 16) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'6', 16) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'6', 16) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'7', 16) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'7', 16) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'8', 16) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'8', 16) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'9', 16) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'9', 16) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'a', 16) == test + 0xa);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'a', 16) == test + 0xa);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'b', 16) == test + 0xb);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'b', 16) == test + 0xb);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'c', 16) == test + 0xc);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'c', 16) == test + 0xc);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'd', 16) == test + 0xd);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'd', 16) == test + 0xd);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'e', 16) == test + 0xe);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'e', 16) == test + 0xe);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'f', 16) == test + 0xf);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'f', 16) == test + 0xf);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, u'\n', 16) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, u'\n', 16) == nullptr);
+}
+
+void TestLongString16() {
+  const size_t count = 256;
+  char16_t test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = i;
+  }
+
+  for (size_t i = 0; i < count - 1; ++i) {
+    MOZ_RELEASE_ASSERT(
+        SIMD::memchr16(test, static_cast<char16_t>(i), count - 1) == test + i);
+    MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, static_cast<char16_t>(i),
+                                          count - 1) == test + i);
+  }
+  MOZ_RELEASE_ASSERT(SIMD::memchr16(test, count - 1, count - 1) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test, count - 1, count - 1) == nullptr);
+}
+
+void TestGauntlet16() {
+  const size_t count = 257;
+  char16_t test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = i;
+  }
+
+  for (size_t i = 0; i < count - 1; ++i) {
+    for (size_t j = 0; j < count - 1; ++j) {
+      for (size_t k = 0; k < count - 1; ++k) {
+        if (i >= k) {
+          const char16_t* expected = nullptr;
+          if (j >= k && j < i) {
+            expected = test + j;
+          }
+          MOZ_RELEASE_ASSERT(SIMD::memchr16(test + k, static_cast<char16_t>(j),
+                                            i - k) == expected);
+          MOZ_RELEASE_ASSERT(SIMD::memchr16SSE2(test + k,
+                                                static_cast<char16_t>(j),
+                                                i - k) == expected);
+        }
+      }
+    }
+  }
+}
+
+void TestTinyString64() {
+  const uint64_t test[4] = {0, 1, 2, 3};
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 0, 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 1, 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 2, 3) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 3, 3) == nullptr);
+}
+
+void TestShortString64() {
+  const uint64_t test[16] = {0, 1, 2,  3,  4,  5,  6,  7,
+                             8, 9, 10, 11, 12, 13, 14, 15};
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 0, 15) == test + 0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 1, 15) == test + 1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 2, 15) == test + 2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 3, 15) == test + 3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 4, 15) == test + 4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 5, 15) == test + 5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 6, 15) == test + 6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 7, 15) == test + 7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 8, 15) == test + 8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 9, 15) == test + 9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 9, 15) == test + 9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 10, 15) == test + 10);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 11, 15) == test + 11);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 12, 15) == test + 12);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 13, 15) == test + 13);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 14, 15) == test + 14);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 15, 15) == nullptr);
+}
+
+void TestMediumString64() {
+  const uint64_t test[32] = {0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  10,
+                             11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
+                             22, 23, 24, 25, 26, 27, 28, 29, 30, 31};
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 0, 31) == test + 0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 1, 31) == test + 1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 2, 31) == test + 2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 3, 31) == test + 3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 4, 31) == test + 4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 5, 31) == test + 5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 6, 31) == test + 6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 7, 31) == test + 7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 8, 31) == test + 8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 9, 31) == test + 9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 9, 31) == test + 9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 10, 31) == test + 10);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 11, 31) == test + 11);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 12, 31) == test + 12);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 13, 31) == test + 13);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 14, 31) == test + 14);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 15, 31) == test + 15);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 16, 31) == test + 16);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 17, 31) == test + 17);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 18, 31) == test + 18);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 19, 31) == test + 19);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 20, 31) == test + 20);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 21, 31) == test + 21);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 22, 31) == test + 22);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 23, 31) == test + 23);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 24, 31) == test + 24);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 25, 31) == test + 25);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 26, 31) == test + 26);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 27, 31) == test + 27);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 28, 31) == test + 28);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 29, 31) == test + 29);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 30, 31) == test + 30);
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, 31, 31) == nullptr);
+}
+
+void TestLongString64() {
+  const size_t count = 256;
+  uint64_t test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = i;
+  }
+
+  for (uint64_t i = 0; i < count - 1; ++i) {
+    MOZ_RELEASE_ASSERT(SIMD::memchr64(test, i, count - 1) == test + i);
+  }
+  MOZ_RELEASE_ASSERT(SIMD::memchr64(test, count - 1, count - 1) == nullptr);
+}
+
+void TestGauntlet64() {
+  const size_t count = 257;
+  uint64_t test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = i;
+  }
+
+  for (uint64_t i = 0; i < count - 1; ++i) {
+    for (uint64_t j = 0; j < count - 1; ++j) {
+      for (uint64_t k = 0; k < count - 1; ++k) {
+        if (i >= k) {
+          const uint64_t* expected = nullptr;
+          if (j >= k && j < i) {
+            expected = test + j;
+          }
+          MOZ_RELEASE_ASSERT(SIMD::memchr64(test + k, j, i - k) == expected);
+        }
+      }
+    }
+  }
+}
+
+void TestTinyString2x8() {
+  const char* test = "012\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '0', '1', 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '1', '2', 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '2', '\n', 3) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '0', '2', 3) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '1', '\n', 3) == nullptr);
+}
+
+void TestShortString2x8() {
+  const char* test = "0123456789\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '0', '1', 10) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '1', '2', 10) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '2', '3', 10) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '3', '4', 10) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '4', '5', 10) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '5', '6', 10) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '6', '7', 10) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '7', '8', 10) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '8', '9', 10) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '9', '\n', 10) == nullptr);
+}
+
+void TestMediumString2x8() {
+  const char* test = "0123456789abcdef\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '0', '1', 16) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '1', '2', 16) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '2', '3', 16) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '3', '4', 16) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '4', '5', 16) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '5', '6', 16) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '6', '7', 16) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '7', '8', 16) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '8', '9', 16) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, '9', 'a', 16) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, 'a', 'b', 16) == test + 0xa);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, 'b', 'c', 16) == test + 0xb);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, 'c', 'd', 16) == test + 0xc);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, 'd', 'e', 16) == test + 0xd);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, 'e', 'f', 16) == test + 0xe);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, 'f', '\n', 16) == nullptr);
+}
+
+void TestLongString2x8() {
+  const size_t count = 256;
+  char test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = static_cast<char>(i);
+  }
+
+  for (size_t i = 0; i < count - 2; ++i) {
+    MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, static_cast<char>(i),
+                                       static_cast<char>(i + 1),
+                                       count - 1) == test + i);
+  }
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test, static_cast<char>(count - 2),
+                                     static_cast<char>(count - 1),
+                                     count - 1) == nullptr);
+}
+
+void TestTinyString2x16() {
+  const char16_t* test = u"012\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'0', u'1', 3) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'1', u'2', 3) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'2', u'\n', 3) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'0', u'2', 3) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'1', u'\n', 3) == nullptr);
+}
+
+void TestShortString2x16() {
+  const char16_t* test = u"0123456789\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'0', u'1', 10) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'1', u'2', 10) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'2', u'3', 10) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'3', u'4', 10) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'4', u'5', 10) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'5', u'6', 10) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'6', u'7', 10) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'7', u'8', 10) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'8', u'9', 10) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'9', u'\n', 10) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'0', u'2', 10) == nullptr);
+}
+
+void TestMediumString2x16() {
+  const char16_t* test = u"0123456789abcdef\n";
+
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'0', u'1', 16) == test + 0x0);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'1', u'2', 16) == test + 0x1);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'2', u'3', 16) == test + 0x2);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'3', u'4', 16) == test + 0x3);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'4', u'5', 16) == test + 0x4);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'5', u'6', 16) == test + 0x5);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'6', u'7', 16) == test + 0x6);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'7', u'8', 16) == test + 0x7);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'8', u'9', 16) == test + 0x8);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'9', u'a', 16) == test + 0x9);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'a', u'b', 16) == test + 0xa);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'b', u'c', 16) == test + 0xb);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'c', u'd', 16) == test + 0xc);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'd', u'e', 16) == test + 0xd);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'e', u'f', 16) == test + 0xe);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'f', u'\n', 16) == nullptr);
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, u'0', u'2', 10) == nullptr);
+}
+
+void TestLongString2x16() {
+  const size_t count = 257;
+  char16_t test[count];
+  for (size_t i = 0; i < count; ++i) {
+    test[i] = static_cast<char16_t>(i);
+  }
+
+  for (size_t i = 0; i < count - 2; ++i) {
+    MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, static_cast<char16_t>(i),
+                                        static_cast<char16_t>(i + 1),
+                                        count - 1) == test + i);
+  }
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test, static_cast<char16_t>(count - 2),
+                                      static_cast<char16_t>(count - 1),
+                                      count - 1) == nullptr);
+}
+
+void TestGauntlet2x8() {
+  const size_t count = 256;
+  char test[count * 2];
+  // load in the evens
+  for (size_t i = 0; i < count / 2; ++i) {
+    test[i] = static_cast<char>(2 * i);
+  }
+  // load in the odds
+  for (size_t i = 0; i < count / 2; ++i) {
+    test[count / 2 + i] = static_cast<char>(2 * i + 1);
+  }
+  // load in evens and odds sequentially
+  for (size_t i = 0; i < count; ++i) {
+    test[count + i] = static_cast<char>(i);
+  }
+
+  for (size_t i = 0; i < count - 1; ++i) {
+    for (size_t j = 0; j < count - 2; ++j) {
+      for (size_t k = 0; k < count - 1; ++k) {
+        if (i > k + 1) {
+          const char* expected1 = nullptr;
+          const char* expected2 = nullptr;
+          if (i > j + 1) {
+            expected1 = test + j + count;  // Add count to skip over odds/evens
+            if (j >= k) {
+              expected2 = test + j + count;
+            }
+          }
+          char a = static_cast<char>(j);
+          char b = static_cast<char>(j + 1);
+          // Make sure it doesn't pick up any in the alternating odd/even
+          MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test + k, a, b, i - k + count) ==
+                             expected1);
+          // Make sure we cover smaller inputs
+          MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test + k + count, a, b, i - k) ==
+                             expected2);
+        }
+      }
+    }
+  }
+}
+
+void TestGauntlet2x16() {
+  const size_t count = 1024;
+  char16_t test[count * 2];
+  // load in the evens
+  for (size_t i = 0; i < count / 2; ++i) {
+    test[i] = static_cast<char16_t>(2 * i);
+  }
+  // load in the odds
+  for (size_t i = 0; i < count / 2; ++i) {
+    test[count / 2 + i] = static_cast<char16_t>(2 * i + 1);
+  }
+  // load in evens and odds sequentially
+  for (size_t i = 0; i < count; ++i) {
+    test[count + i] = static_cast<char16_t>(i);
+  }
+
+  for (size_t i = 0; i < count - 1; ++i) {
+    for (size_t j = 0; j < count - 2; ++j) {
+      for (size_t k = 0; k < count - 1; ++k) {
+        if (i > k + 1) {
+          const char16_t* expected1 = nullptr;
+          const char16_t* expected2 = nullptr;
+          if (i > j + 1) {
+            expected1 = test + j + count;  // Add count to skip over odds/evens
+            if (j >= k) {
+              expected2 = test + j + count;
+            }
+          }
+          char16_t a = static_cast<char16_t>(j);
+          char16_t b = static_cast<char16_t>(j + 1);
+          // Make sure it doesn't pick up any in the alternating odd/even
+          MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test + k, a, b, i - k + count) ==
+                             expected1);
+          // Make sure we cover smaller inputs
+          MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test + k + count, a, b, i - k) ==
+                             expected2);
+        }
+      }
+    }
+  }
+}
+
+void TestSpecialCases() {
+  // The following 4 asserts test the case where we do two overlapping checks,
+  // where the first one ends with our first search character, and the second
+  // one begins with our search character. Since they are overlapping, we want
+  // to ensure that the search function doesn't carry the match from the
+  // first check over to the second check.
+  const char* test1 = "x123456789abcdey";
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test1, 'y', 'x', 16) == nullptr);
+  const char* test2 = "1000000000000000200000000000000030b000000000000a40";
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x8(test2, 'a', 'b', 50) == nullptr);
+  const char16_t* test1wide = u"x123456y";
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test1wide, 'y', 'x', 8) == nullptr);
+  const char16_t* test2wide = u"100000002000000030b0000a40";
+  MOZ_RELEASE_ASSERT(SIMD::memchr2x16(test2wide, 'a', 'b', 26) == nullptr);
+}
+
+int main(void) {
+  TestTinyString();
+  TestShortString();
+  TestMediumString();
+  TestLongString();
+  TestGauntlet();
+
+  TestTinyString16();
+  TestShortString16();
+  TestMediumString16();
+  TestLongString16();
+  TestGauntlet16();
+
+  TestTinyString64();
+  TestShortString64();
+  TestMediumString64();
+  TestLongString64();
+  TestGauntlet64();
+
+  TestTinyString2x8();
+  TestShortString2x8();
+  TestMediumString2x8();
+  TestLongString2x8();
+
+  TestTinyString2x16();
+  TestShortString2x16();
+  TestMediumString2x16();
+  TestLongString2x16();
+
+  TestSpecialCases();
+
+  // These are too slow to run all the time, but they should be run when making
+  // meaningful changes just to be sure.
+  // TestGauntlet2x8();
+  // TestGauntlet2x16();
+
+  return 0;
+}