[wpiutil] Vendor llvm and update to 13.0.0 (#4224)

2026-06-20 00:51:42 +00:00 · 2022-05-20 18:59:53 -04:00
parent 5aa67f56e6
commit c3b223ce60
106 changed files with 16897 additions and 1895 deletions
--- a/wpiutil/src/test/native/cpp/llvm/PointerIntPairTest.cpp
+++ b/wpiutil/src/test/native/cpp/llvm/PointerIntPairTest.cpp
@@ -0,0 +1,109 @@
+//===- llvm/unittest/ADT/PointerIntPairTest.cpp - Unit tests --------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "wpi/PointerIntPair.h"
+#include "gtest/gtest.h"
+#include <limits>
+using namespace wpi;
+
+namespace {
+
+TEST(PointerIntPairTest, GetSet) {
+  struct S {
+    int i;
+  };
+  S s;
+
+  PointerIntPair<S *, 2> Pair(&s, 1U);
+  EXPECT_EQ(&s, Pair.getPointer());
+  EXPECT_EQ(1U, Pair.getInt());
+
+  Pair.setInt(2);
+  EXPECT_EQ(&s, Pair.getPointer());
+  EXPECT_EQ(2U, Pair.getInt());
+
+  Pair.setPointer(nullptr);
+  EXPECT_EQ(nullptr, Pair.getPointer());
+  EXPECT_EQ(2U, Pair.getInt());
+
+  Pair.setPointerAndInt(&s, 3U);
+  EXPECT_EQ(&s, Pair.getPointer());
+  EXPECT_EQ(3U, Pair.getInt());
+
+  // Make sure that we can perform all of our operations on enum classes.
+  //
+  // The concern is that enum classes are only explicitly convertible to
+  // integers. This means that if we assume in PointerIntPair this, a
+  // compilation error will result. This group of tests exercises the enum class
+  // code to make sure that we do not run into such issues in the future.
+  enum class E : unsigned {
+    Case1,
+    Case2,
+    Case3,
+  };
+  PointerIntPair<S *, 2, E> Pair2(&s, E::Case1);
+  EXPECT_EQ(&s, Pair2.getPointer());
+  EXPECT_EQ(E::Case1, Pair2.getInt());
+
+  Pair2.setInt(E::Case2);
+  EXPECT_EQ(&s, Pair2.getPointer());
+  EXPECT_EQ(E::Case2, Pair2.getInt());
+
+  Pair2.setPointer(nullptr);
+  EXPECT_EQ(nullptr, Pair2.getPointer());
+  EXPECT_EQ(E::Case2, Pair2.getInt());
+
+  Pair2.setPointerAndInt(&s, E::Case3);
+  EXPECT_EQ(&s, Pair2.getPointer());
+  EXPECT_EQ(E::Case3, Pair2.getInt());
+
+  static_assert(std::is_trivially_copyable<PointerIntPair<S *, 2, E>>::value,
+                "trivially copyable");
+}
+
+TEST(PointerIntPairTest, DefaultInitialize) {
+  PointerIntPair<float *, 2> Pair;
+  EXPECT_EQ(nullptr, Pair.getPointer());
+  EXPECT_EQ(0U, Pair.getInt());
+}
+
+// In real code this would be a word-sized integer limited to 31 bits.
+struct Fixnum31 {
+  uintptr_t Value;
+};
+struct FixnumPointerTraits {
+  static inline void *getAsVoidPointer(Fixnum31 Num) {
+    return reinterpret_cast<void *>(Num.Value << NumLowBitsAvailable);
+  }
+  static inline Fixnum31 getFromVoidPointer(void *P) {
+    // In real code this would assert that the value is in range.
+    return {reinterpret_cast<uintptr_t>(P) >> NumLowBitsAvailable};
+  }
+  static constexpr int NumLowBitsAvailable =
+      std::numeric_limits<uintptr_t>::digits - 31;
+};
+TEST(PointerIntPairTest, ManyUnusedBits) {
+
+  PointerIntPair<Fixnum31, 1, bool, FixnumPointerTraits> pair;
+  EXPECT_EQ((uintptr_t)0, pair.getPointer().Value);
+  EXPECT_FALSE(pair.getInt());
+
+  pair.setPointerAndInt({ 0x7FFFFFFF }, true );
+  EXPECT_EQ((uintptr_t)0x7FFFFFFF, pair.getPointer().Value);
+  EXPECT_TRUE(pair.getInt());
+
+  EXPECT_EQ(FixnumPointerTraits::NumLowBitsAvailable - 1,
+            (int)PointerLikeTypeTraits<decltype(pair)>::NumLowBitsAvailable);
+
+  static_assert(
+      std::is_trivially_copyable<
+          PointerIntPair<Fixnum31, 1, bool, FixnumPointerTraits>>::value,
+      "trivially copyable");
+}
+
+} // end anonymous namespace