AlignOfTest.cpp revision 3967f503f4ea623d3300a785f5f1c333230f24a9
15df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul//===- llvm/unittest/Support/AlignOfTest.cpp - Alignment utility tests ----===// 25df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// 35df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// The LLVM Compiler Infrastructure 45df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// 55df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// This file is distributed under the University of Illinois Open Source 65df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// License. See LICENSE.TXT for details. 75df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// 85df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul//===----------------------------------------------------------------------===// 95df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 105df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#include "llvm/Support/AlignOf.h" 115df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#include "llvm/Support/Compiler.h" 125df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 135df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#include "gtest/gtest.h" 145df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 155df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulusing namespace llvm; 165df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 175df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulnamespace { 185df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 195df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul// Define some fixed alignment types to use in these tests. 205df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#if __cplusplus == 201103L || __has_feature(cxx_alignas) 215df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char alignas(1) A1; 225df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char alignas(2) A2; 235df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char alignas(4) A4; 245df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char alignas(8) A8; 255df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#elif defined(__clang__) || defined(__GNUC__) 265df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char A1 __attribute__((aligned(1))); 275df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char A2 __attribute__((aligned(2))); 285df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char A4 __attribute__((aligned(4))); 295df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef char A8 __attribute__((aligned(8))); 305df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#elif defined(_MSC_VER) 315df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef __declspec(align(1)) char A1; 325df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef __declspec(align(2)) char A2; 335df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef __declspec(align(4)) char A4; 345df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paultypedef __declspec(align(8)) char A8; 355df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#else 365df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul# error No supported align as directive. 37bcc6eddd335e97d49ed2ef3a1440f94d58dce12dJon Smirl#endif 385df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 39bcc6eddd335e97d49ed2ef3a1440f94d58dce12dJon Smirl// Wrap the forced aligned types in structs to hack around compiler bugs. 405df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct SA1 { A1 a; }; 415df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct SA2 { A2 a; }; 425df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct SA4 { A4 a; }; 435df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct SA8 { A8 a; }; 445df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 455df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct S1 {}; 465df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct S2 { char a; }; 475df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct S3 { int x; }; 485df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct S4 { double y; }; 495df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct S5 { A1 a1; A2 a2; A4 a4; A8 a8; }; 505df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct S6 { double f(); }; 515df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D1 : S1 {}; 52462183fe4cb6df6d90632d9e2cee881c8d26b1cbAlan Hourihanestruct D2 : S6 { float g(); }; 535df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D3 : S2 {}; 545df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D4 : S2 { int x; }; 555df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D5 : S3 { char c; }; 565df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D6 : S2, S3 {}; 575df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D7 : S1, S3 {}; 585df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D8 : S1, D4, D5 { double x[2]; }; 595df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct D9 : S1, D1 { S1 s1; }; 605df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct V1 { virtual ~V1(); }; 615df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paulstruct V2 { int x; virtual ~V2(); }; 625562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholtstruct V3 : V1 { virtual ~V3(); }; 635562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholtstruct V4 : virtual V2 { int y; virtual ~V4(); }; 645562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholtstruct V5 : V4, V3 { double z; virtual ~V5(); }; 658e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheideggerstruct V6 : S1 { virtual ~V6(); }; 668e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheideggerstruct V7 : virtual V2, virtual V6 { virtual ~V7(); }; 678e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheideggerstruct V8 : V5, virtual V6, V7 { double zz; virtual ~V8(); }; 688e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger 698e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger// Ensure alignment is a compile-time constant. 708e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheideggerchar LLVM_ATTRIBUTE_UNUSED test_arr1 718e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<char>::Alignment > 0] 728e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<short>::Alignment > 0] 738e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<int>::Alignment > 0] 748e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<long>::Alignment > 0] 758e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<long long>::Alignment > 0] 768e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<float>::Alignment > 0] 777a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<double>::Alignment > 0] 785562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<long double>::Alignment > 0] 795562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<void *>::Alignment > 0] 807a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<int *>::Alignment > 0] 815562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<double (*)(double)>::Alignment > 0] 828e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<double (S6::*)()>::Alignment > 0]; 838e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheideggerchar LLVM_ATTRIBUTE_UNUSED test_arr2 848e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<A1>::Alignment > 0] 857a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<A2>::Alignment > 0] 865562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<A4>::Alignment > 0] 877a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<A8>::Alignment > 0] 887a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<SA1>::Alignment > 0] 897a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<SA2>::Alignment > 0] 907a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<SA4>::Alignment > 0] 917a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<SA8>::Alignment > 0]; 927a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholtchar LLVM_ATTRIBUTE_UNUSED test_arr3 938e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<S1>::Alignment > 0] 948e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<S2>::Alignment > 0] 957a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<S3>::Alignment > 0] 965562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<S4>::Alignment > 0] 977a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<S5>::Alignment > 0] 987a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<S6>::Alignment > 0]; 998e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheideggerchar LLVM_ATTRIBUTE_UNUSED test_arr4 1008e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<D1>::Alignment > 0] 1015562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<D2>::Alignment > 0] 1025562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<D3>::Alignment > 0] 1035562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<D4>::Alignment > 0] 1047a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<D5>::Alignment > 0] 1057a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<D6>::Alignment > 0] 1067a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<D7>::Alignment > 0] 1075562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<D8>::Alignment > 0] 1085562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt [AlignOf<D9>::Alignment > 0]; 1095562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholtchar LLVM_ATTRIBUTE_UNUSED test_arr5 1108e3926575264d31b3caacb9cbb606f8f2914f57dRoland Scheidegger [AlignOf<V1>::Alignment > 0] 1117a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V2>::Alignment > 0] 1127a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V3>::Alignment > 0] 1137a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V4>::Alignment > 0] 1147a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V5>::Alignment > 0] 1157a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V6>::Alignment > 0] 1167a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V7>::Alignment > 0] 1177a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt [AlignOf<V8>::Alignment > 0]; 1185562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt 1195562fe653cf88454bbf2c50f77a8b56b0dafe01bEric AnholtTEST(AlignOfTest, BasicAlignmentInvariants) { 1205562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // For a very strange reason, many compilers do not support this. Both Clang 1215562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // and GCC fail to align these properly. 1227a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_EQ(1u, alignOf<A1>()); 1237a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt#if 0 1247a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_EQ(2u, alignOf<A2>()); 1257a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_EQ(4u, alignOf<A4>()); 1265562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(8u, alignOf<A8>()); 1277a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt#endif 1285562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt 1295df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // But once wrapped in structs, the alignment is correctly managed. 1305df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(1u, alignOf<SA1>()); 1315df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(2u, alignOf<SA2>()); 1325df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(4u, alignOf<SA4>()); 1335df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(8u, alignOf<SA8>()); 1345562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt 1355562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(1u, alignOf<char>()); 1365562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<char>(), alignOf<short>()); 1375562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<short>(), alignOf<int>()); 1385df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(alignOf<int>(), alignOf<long>()); 1395562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<long>(), alignOf<long long>()); 1405562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<char>(), alignOf<float>()); 1415562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<float>(), alignOf<double>()); 1425562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<char>(), alignOf<long double>()); 1435562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<char>(), alignOf<void *>()); 1445562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<void *>(), alignOf<int *>()); 1455562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<char>(), alignOf<S1>()); 1465562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<S2>()); 1475562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<S3>()); 1485562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<S4>()); 1495562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<S5>()); 1505562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<S6>()); 1515562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D1>()); 1525562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D2>()); 1535562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D3>()); 15422d1acf2ee25280c3294c2cfded232e612ffac2eFelix Kuehling EXPECT_LE(alignOf<S1>(), alignOf<D4>()); 1555562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D5>()); 1565562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D6>()); 1575562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D7>()); 1585562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<D8>()); 15922d1acf2ee25280c3294c2cfded232e612ffac2eFelix Kuehling EXPECT_LE(alignOf<S1>(), alignOf<D9>()); 1605562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<S1>(), alignOf<V1>()); 16122d1acf2ee25280c3294c2cfded232e612ffac2eFelix Kuehling EXPECT_LE(alignOf<V1>(), alignOf<V2>()); 1625562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<V1>(), alignOf<V3>()); 1635562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<V1>(), alignOf<V4>()); 1645562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<V1>(), alignOf<V5>()); 1655562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<V1>(), alignOf<V6>()); 1665562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(alignOf<V1>(), alignOf<V7>()); 1675df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(alignOf<V1>(), alignOf<V8>()); 1685df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul} 1695df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 1705df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian PaulTEST(AlignOfTest, BasicAlignedArray) { 1715562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // Note: this code exclusively uses the struct-wrapped arbitrarily aligned 1725562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // types because of the bugs mentioned above where GCC and Clang both 1735df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // disregard the arbitrary alignment specifier until the type is used to 1745df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // declare a member of a struct. 1755df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(1u, alignOf<AlignedCharArray<SA1>::union_type>()); 1765df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_LE(2u, alignOf<AlignedCharArray<SA2>::union_type>()); 1777a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_LE(4u, alignOf<AlignedCharArray<SA4>::union_type>()); 1787a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_LE(8u, alignOf<AlignedCharArray<SA8>::union_type>()); 1797a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt 1807a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_LE(1u, sizeof(AlignedCharArray<SA1>::union_type)); 1817a086dc05e665a78f7e9d069aa4fc70e844b8988Eric Anholt EXPECT_LE(2u, sizeof(AlignedCharArray<SA2>::union_type)); 1825562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(4u, sizeof(AlignedCharArray<SA4>::union_type)); 1835562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_LE(8u, sizeof(AlignedCharArray<SA8>::union_type)); 1845df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 1855562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(1u, (alignOf<AlignedCharArray<SA1>::union_type>())); 1865562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(2u, (alignOf<AlignedCharArray<SA1, SA2>::union_type>())); 1875562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(4u, (alignOf<AlignedCharArray<SA1, SA2, SA4>::union_type>())); 1885562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(8u, (alignOf<AlignedCharArray<SA1, SA2, SA4, SA8>::union_type>())); 1895562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt 1905562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(1u, sizeof(AlignedCharArray<SA1>::union_type)); 1915562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(2u, sizeof(AlignedCharArray<SA1, SA2>::union_type)); 1925562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(4u, sizeof(AlignedCharArray<SA1, SA2, SA4>::union_type)); 1935562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(8u, sizeof(AlignedCharArray<SA1, SA2, SA4, SA8>::union_type)); 1945562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt 1955562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(1u, (alignOf<AlignedCharArray<SA1[1]>::union_type>())); 1965562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(2u, (alignOf<AlignedCharArray<SA1[2], SA2[1]>::union_type>())); 1975562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(4u, (alignOf<AlignedCharArray<SA1[42], SA2[55], 1985562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt SA4[13]>::union_type>())); 1995562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(8u, (alignOf<AlignedCharArray<SA1[2], SA2[1], 2005562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt SA4, SA8>::union_type>())); 2015df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 2025df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(1u, sizeof(AlignedCharArray<SA1[1]>::union_type)); 2035562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(2u, sizeof(AlignedCharArray<SA1[2], SA2[1]>::union_type)); 2045562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(4u, sizeof(AlignedCharArray<SA1[3], SA2[2], SA4>::union_type)); 2055562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(16u, sizeof(AlignedCharArray<SA1, SA2[3], 2065562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt SA4[3], SA8>::union_type)); 2075562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt 2085562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // For other tests we simply assert that the alignment of the union mathes 2095562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // that of the fundamental type and hope that we have any weird type 2105562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt // productions that would trigger bugs. 2115562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<char>(), alignOf<AlignedCharArray<char>::union_type>()); 2125562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<short>(), alignOf<AlignedCharArray<short>::union_type>()); 2135562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<int>(), alignOf<AlignedCharArray<int>::union_type>()); 2145562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<long>(), alignOf<AlignedCharArray<long>::union_type>()); 2155562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<long long>(), 2165562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt alignOf<AlignedCharArray<long long>::union_type>()); 2175562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<float>(), alignOf<AlignedCharArray<float>::union_type>()); 2185df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<double>(), alignOf<AlignedCharArray<double>::union_type>()); 2195df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<long double>(), 2205562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt alignOf<AlignedCharArray<long double>::union_type>()); 2215562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<void *>(), alignOf<AlignedCharArray<void *>::union_type>()); 2225562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<int *>(), alignOf<AlignedCharArray<int *>::union_type>()); 2235562fe653cf88454bbf2c50f77a8b56b0dafe01bEric Anholt EXPECT_EQ(alignOf<double (*)(double)>(), 2245df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul alignOf<AlignedCharArray<double (*)(double)>::union_type>()); 2255df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<double (S6::*)()>(), 2265df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul alignOf<AlignedCharArray<double (S6::*)()>::union_type>()); 2275df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<S1>(), alignOf<AlignedCharArray<S1>::union_type>()); 2285df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<S2>(), alignOf<AlignedCharArray<S2>::union_type>()); 2295df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<S3>(), alignOf<AlignedCharArray<S3>::union_type>()); 2305df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<S4>(), alignOf<AlignedCharArray<S4>::union_type>()); 2315df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<S5>(), alignOf<AlignedCharArray<S5>::union_type>()); 2325df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<S6>(), alignOf<AlignedCharArray<S6>::union_type>()); 2335df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D1>(), alignOf<AlignedCharArray<D1>::union_type>()); 234ae4a1cc0666860bf5cc37a5cb549afc9aa5448b0Jon Smirl EXPECT_EQ(alignOf<D2>(), alignOf<AlignedCharArray<D2>::union_type>()); 2355df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D3>(), alignOf<AlignedCharArray<D3>::union_type>()); 2365df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D4>(), alignOf<AlignedCharArray<D4>::union_type>()); 2375df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D5>(), alignOf<AlignedCharArray<D5>::union_type>()); 2385df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D6>(), alignOf<AlignedCharArray<D6>::union_type>()); 2395df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D7>(), alignOf<AlignedCharArray<D7>::union_type>()); 2405df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D8>(), alignOf<AlignedCharArray<D8>::union_type>()); 2415df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<D9>(), alignOf<AlignedCharArray<D9>::union_type>()); 2425df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<V1>(), alignOf<AlignedCharArray<V1>::union_type>()); 2435df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<V2>(), alignOf<AlignedCharArray<V2>::union_type>()); 2445df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<V3>(), alignOf<AlignedCharArray<V3>::union_type>()); 2456f3cc6a5226fd4b5d44cca91e2f76216ecaff831Eric Anholt EXPECT_EQ(alignOf<V4>(), alignOf<AlignedCharArray<V4>::union_type>()); 2466f3cc6a5226fd4b5d44cca91e2f76216ecaff831Eric Anholt EXPECT_EQ(alignOf<V5>(), alignOf<AlignedCharArray<V5>::union_type>()); 2475df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<V6>(), alignOf<AlignedCharArray<V6>::union_type>()); 2486f3cc6a5226fd4b5d44cca91e2f76216ecaff831Eric Anholt EXPECT_EQ(alignOf<V7>(), alignOf<AlignedCharArray<V7>::union_type>()); 2495df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 2505df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // Some versions of MSVC get this wrong somewhat disturbingly. The failure 2515df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // appears to be benign: alignOf<V8>() produces a preposterous value: 12 2525df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#ifndef _MSC_VER 2535df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(alignOf<V8>(), alignOf<AlignedCharArray<V8>::union_type>()); 2545df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#endif 2555df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 2565df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char), sizeof(AlignedCharArray<char>::union_type)); 2575df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[1]), sizeof(AlignedCharArray<char[1]>::union_type)); 2585df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[2]), sizeof(AlignedCharArray<char[2]>::union_type)); 2595df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[3]), sizeof(AlignedCharArray<char[3]>::union_type)); 2605df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[4]), sizeof(AlignedCharArray<char[4]>::union_type)); 2615df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[5]), sizeof(AlignedCharArray<char[5]>::union_type)); 2625df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[8]), sizeof(AlignedCharArray<char[8]>::union_type)); 2635df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[13]), sizeof(AlignedCharArray<char[13]>::union_type)); 2645df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[16]), sizeof(AlignedCharArray<char[16]>::union_type)); 2655df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[21]), sizeof(AlignedCharArray<char[21]>::union_type)); 2665df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(char[32]), sizeof(AlignedCharArray<char[32]>::union_type)); 2675df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(short), sizeof(AlignedCharArray<short>::union_type)); 2685df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(int), sizeof(AlignedCharArray<int>::union_type)); 2695df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(long), sizeof(AlignedCharArray<long>::union_type)); 2705df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(long long), 2715df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul sizeof(AlignedCharArray<long long>::union_type)); 2725df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(float), sizeof(AlignedCharArray<float>::union_type)); 2735df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(double), sizeof(AlignedCharArray<double>::union_type)); 2745df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(long double), 2755df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul sizeof(AlignedCharArray<long double>::union_type)); 2765df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(void *), sizeof(AlignedCharArray<void *>::union_type)); 2775df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(int *), sizeof(AlignedCharArray<int *>::union_type)); 2785df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(double (*)(double)), 2795df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul sizeof(AlignedCharArray<double (*)(double)>::union_type)); 2805df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(double (S6::*)()), 2815df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul sizeof(AlignedCharArray<double (S6::*)()>::union_type)); 2825df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(S1), sizeof(AlignedCharArray<S1>::union_type)); 2835df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(S2), sizeof(AlignedCharArray<S2>::union_type)); 2845df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(S3), sizeof(AlignedCharArray<S3>::union_type)); 2855df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(S4), sizeof(AlignedCharArray<S4>::union_type)); 2865df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(S5), sizeof(AlignedCharArray<S5>::union_type)); 2875df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(S6), sizeof(AlignedCharArray<S6>::union_type)); 2885df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D1), sizeof(AlignedCharArray<D1>::union_type)); 2895df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D2), sizeof(AlignedCharArray<D2>::union_type)); 2905df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D3), sizeof(AlignedCharArray<D3>::union_type)); 2915df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D4), sizeof(AlignedCharArray<D4>::union_type)); 2925df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D5), sizeof(AlignedCharArray<D5>::union_type)); 2935df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D6), sizeof(AlignedCharArray<D6>::union_type)); 2945df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D7), sizeof(AlignedCharArray<D7>::union_type)); 2955df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D8), sizeof(AlignedCharArray<D8>::union_type)); 2965df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9), sizeof(AlignedCharArray<D9>::union_type)); 2975df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[1]), sizeof(AlignedCharArray<D9[1]>::union_type)); 2985df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[2]), sizeof(AlignedCharArray<D9[2]>::union_type)); 2995df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[3]), sizeof(AlignedCharArray<D9[3]>::union_type)); 3005df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[4]), sizeof(AlignedCharArray<D9[4]>::union_type)); 3015df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[5]), sizeof(AlignedCharArray<D9[5]>::union_type)); 3025df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[8]), sizeof(AlignedCharArray<D9[8]>::union_type)); 3035df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[13]), sizeof(AlignedCharArray<D9[13]>::union_type)); 3045df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[16]), sizeof(AlignedCharArray<D9[16]>::union_type)); 3055df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[21]), sizeof(AlignedCharArray<D9[21]>::union_type)); 3065df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(D9[32]), sizeof(AlignedCharArray<D9[32]>::union_type)); 3075df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V1), sizeof(AlignedCharArray<V1>::union_type)); 3085df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V2), sizeof(AlignedCharArray<V2>::union_type)); 3095df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V3), sizeof(AlignedCharArray<V3>::union_type)); 3105df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V4), sizeof(AlignedCharArray<V4>::union_type)); 3115df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V5), sizeof(AlignedCharArray<V5>::union_type)); 3125df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V6), sizeof(AlignedCharArray<V6>::union_type)); 3135df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V7), sizeof(AlignedCharArray<V7>::union_type)); 3145df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul 3155df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // Some versions of MSVC also get this wrong. The failure again appears to be 3165df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul // benign: sizeof(V8) is only 52 bytes, but our array reserves 56. 3175df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#ifndef _MSC_VER 3185df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul EXPECT_EQ(sizeof(V8), sizeof(AlignedCharArray<V8>::union_type)); 3195df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul#endif 3205df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul} 321ae4a1cc0666860bf5cc37a5cb549afc9aa5448b0Jon Smirl 3225df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul} 3235df82c82bd53db90eb72c5aad4dd20cf6f1116b1Brian Paul