1 //===- LowerBitSets.cpp - Unit tests for bitset lowering ------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Transforms/IPO/LowerBitSets.h"
11 #include "gtest/gtest.h"
15 TEST(LowerBitSets, BitSetBuilder) {
17 std::vector<uint64_t> Offsets;
18 std::set<uint64_t> Bits;
25 {{}, std::set<uint64_t>{}, 0, 1, 0, false, false},
26 {{0}, {0}, 0, 1, 0, true, true},
27 {{4}, {0}, 4, 1, 0, true, true},
28 {{37}, {0}, 37, 1, 0, true, true},
29 {{0, 1}, {0, 1}, 0, 2, 0, false, true},
30 {{0, 4}, {0, 1}, 0, 2, 2, false, true},
31 {{0, uint64_t(1) << 33}, {0, 1}, 0, 2, 33, false, true},
32 {{3, 7}, {0, 1}, 3, 2, 2, false, true},
33 {{0, 1, 7}, {0, 1, 7}, 0, 8, 0, false, false},
34 {{0, 2, 14}, {0, 1, 7}, 0, 8, 1, false, false},
35 {{0, 1, 8}, {0, 1, 8}, 0, 9, 0, false, false},
36 {{0, 2, 16}, {0, 1, 8}, 0, 9, 1, false, false},
37 {{0, 1, 2, 3, 4, 5, 6, 7},
38 {0, 1, 2, 3, 4, 5, 6, 7},
44 {{0, 1, 2, 3, 4, 5, 6, 7, 8},
45 {0, 1, 2, 3, 4, 5, 6, 7, 8},
53 for (auto &&T : BSBTests) {
55 for (auto Offset : T.Offsets)
56 BSB.addOffset(Offset);
58 BitSetInfo BSI = BSB.build();
60 EXPECT_EQ(T.Bits, BSI.Bits);
61 EXPECT_EQ(T.ByteOffset, BSI.ByteOffset);
62 EXPECT_EQ(T.BitSize, BSI.BitSize);
63 EXPECT_EQ(T.AlignLog2, BSI.AlignLog2);
64 EXPECT_EQ(T.IsSingleOffset, BSI.isSingleOffset());
65 EXPECT_EQ(T.IsAllOnes, BSI.isAllOnes());
67 for (auto Offset : T.Offsets)
68 EXPECT_TRUE(BSI.containsGlobalOffset(Offset));
70 auto I = T.Offsets.begin();
71 for (uint64_t NonOffset = 0; NonOffset != 256; ++NonOffset) {
72 if (I != T.Offsets.end() && *I == NonOffset) {
77 EXPECT_FALSE(BSI.containsGlobalOffset(NonOffset));
82 TEST(LowerBitSets, GlobalLayoutBuilder) {
85 std::vector<std::set<uint64_t>> Fragments;
86 std::vector<uint64_t> WantLayout;
89 {4, {{0, 1}, {2, 3}}, {0, 1, 2, 3}},
90 {3, {{0, 1}, {1, 2}}, {0, 1, 2}},
91 {4, {{0, 1}, {1, 2}, {2, 3}}, {0, 1, 2, 3}},
92 {4, {{0, 1}, {2, 3}, {1, 2}}, {0, 1, 2, 3}},
93 {6, {{2, 5}, {0, 1, 2, 3, 4, 5}}, {0, 1, 2, 5, 3, 4}},
96 for (auto &&T : GLBTests) {
97 GlobalLayoutBuilder GLB(T.NumObjects);
98 for (auto &&F : T.Fragments)
101 std::vector<uint64_t> ComputedLayout;
102 for (auto &&F : GLB.Fragments)
103 ComputedLayout.insert(ComputedLayout.end(), F.begin(), F.end());
105 EXPECT_EQ(T.WantLayout, ComputedLayout);
109 TEST(LowerBitSets, ByteArrayBuilder) {
111 std::set<uint64_t> Bits;
113 uint64_t WantByteOffset;
118 std::vector<BABAlloc> Allocs;
119 std::vector<uint8_t> WantBytes;
121 {{{{0}, 1, 0, 1}, {{0}, 1, 0, 2}}, {3}},
137 {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80, 0, 0x80, 0x40, 0x20, 0x10, 8, 4,
141 for (auto &&T : BABTests) {
142 ByteArrayBuilder BABuilder;
144 for (auto &&A : T.Allocs) {
145 uint64_t GotByteOffset;
148 BABuilder.allocate(A.Bits, A.BitSize, GotByteOffset, GotMask);
149 EXPECT_EQ(A.WantByteOffset, GotByteOffset);
150 EXPECT_EQ(A.WantMask, GotMask);
153 EXPECT_EQ(T.WantBytes, BABuilder.Bytes);