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40 #include "gromacs/simd/simd.h"
41 #include "gromacs/utility/basedefinitions.h"
45 /* Some notes on the setup of these tests:
47 * It might seem strange to mix different instructions for "setting" SIMD
48 * registers, but the difference is that the routines like setSimdIntFrom1I()
49 * only use the load/store operations that we already test separately in
50 * bootstrap_loadstore.cpp. Since these are "known good" if the bootstrap
51 * tests pass, we use them to test the normal SIMD implementation instructions.
64 /*! \addtogroup module_simd */
67 /*! \brief Test fixture for integer tests (identical to the generic \ref SimdTest) */
68 typedef SimdTest SimdIntegerTest;
70 /* Yes, Virginia. We test for real even for integers. This is because we use
71 * the floating-point type when no real integer SIMD type exists (which in turn
72 * is because the results of real-to-integer conversions end up there). This
73 * means the basic integer SIMD type is available whenever the real one is,
74 * but depending on the precision selected that might not be the case.
76 * The second we have default-precision floating-point SIMD, we also have
77 * the integer SIMD dataype and the most fundamental load/store ops.
79 # if GMX_SIMD_HAVE_REAL
81 TEST_F(SimdIntegerTest, setZero)
83 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(0), setZero());
85 TEST_F(SimdIntegerTest, set)
87 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(1), SimdInt32(1));
89 # endif // GMX_SIMD_HAVE_REAL
91 # if GMX_SIMD_HAVE_INT32_ARITHMETICS
92 TEST_F(SimdIntegerTest, add)
94 GMX_EXPECT_SIMD_INT_EQ(iSimd_5_7_9, iSimd_1_2_3 + iSimd_4_5_6); // short add
95 GMX_EXPECT_SIMD_INT_EQ(iSimd_5M_7M_9M, iSimd_1M_2M_3M + iSimd_4M_5M_6M); // 32 bit add
98 TEST_F(SimdIntegerTest, sub)
100 GMX_EXPECT_SIMD_INT_EQ(iSimd_1_2_3, iSimd_5_7_9 - iSimd_4_5_6); // short sub
101 GMX_EXPECT_SIMD_INT_EQ(iSimd_1M_2M_3M, iSimd_5M_7M_9M - iSimd_4M_5M_6M); // 32 bit sub
104 TEST_F(SimdIntegerTest, mul)
106 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(4, 10, 18), iSimd_1_2_3 * iSimd_4_5_6); // 2*3=6 (short mul)
107 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(268435456),
108 SimdInt32(16384) * SimdInt32(16384)); // 16384*16384 = 268435456 (long mul)
111 # endif // GMX_SIMD_HAVE_INT32_ARITHMETICS
113 # if GMX_SIMD_HAVE_INT32_LOGICAL
114 TEST_F(SimdIntegerTest, and)
116 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(0xC0C0C0C0), iSimd_0xF0F0F0F0 & iSimd_0xCCCCCCCC);
119 TEST_F(SimdIntegerTest, andNot)
121 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(0x0C0C0C0C), andNot(iSimd_0xF0F0F0F0, iSimd_0xCCCCCCCC));
124 TEST_F(SimdIntegerTest, or)
126 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(0xFCFCFCFC), iSimd_0xF0F0F0F0 | iSimd_0xCCCCCCCC);
129 TEST_F(SimdIntegerTest, xor)
131 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(0x3C3C3C3C), iSimd_0xF0F0F0F0 ^ iSimd_0xCCCCCCCC);
133 # endif // GMX_SIMD_HAVE_INT32_LOGICAL
135 # if GMX_SIMD_HAVE_INT32_EXTRACT
136 TEST_F(SimdIntegerTest, extract)
138 alignas(GMX_SIMD_ALIGNMENT) std::int32_t idata[GMX_SIMD_REAL_WIDTH];
141 for (int i = 0; i < GMX_SIMD_REAL_WIDTH; i++)
145 simd = load<SimdInt32>(idata);
147 /* We cannot do a loop here, since
148 * - C++ gets confused about signed/unsigned if SSE macros are used in EXPECT_EQ()
149 * - Extract macros can only take immediates (not variables) on some archs,
150 * and some compilers are not smart enough to expand the for loop.
152 * To solve this we use a few values manually instead of a for-loop.
155 extracted_int = extract<0>(simd);
156 EXPECT_EQ(1, extracted_int);
157 # if GMX_SIMD_REAL_WIDTH >= 2
158 extracted_int = extract<1>(simd);
159 EXPECT_EQ(2, extracted_int);
161 # if GMX_SIMD_REAL_WIDTH >= 4
162 extracted_int = extract<3>(simd);
163 EXPECT_EQ(4, extracted_int);
165 # if GMX_SIMD_REAL_WIDTH >= 6
166 extracted_int = extract<5>(simd);
167 EXPECT_EQ(6, extracted_int);
169 # if GMX_SIMD_REAL_WIDTH >= 8
170 extracted_int = extract<7>(simd);
171 EXPECT_EQ(8, extracted_int);
174 # endif // GMX_SIMD_HAVE_INT32_EXTRACT
176 # if GMX_SIMD_HAVE_REAL
177 TEST_F(SimdIntegerTest, cvtR2I)
179 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(2), cvtR2I(rSimd_2p25));
180 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-2), cvtR2I(rSimd_m2p25));
181 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(4), cvtR2I(rSimd_3p75));
182 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-4), cvtR2I(rSimd_m3p75));
183 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(3), cvtR2I(rSimd_3p25));
184 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-3), cvtR2I(rSimd_m3p25));
186 // Test multi-byte numbers
187 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(123457), cvtR2I(setSimdRealFrom1R(123456.7)));
188 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-123457), cvtR2I(setSimdRealFrom1R(-123456.7)));
189 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(123456), cvtR2I(setSimdRealFrom1R(123456.3)));
190 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-123456), cvtR2I(setSimdRealFrom1R(-123456.3)));
193 // Test number with more digits than we can represent in single.
194 // Note that our SIMD integers are only 32 bits, so we cannot go beyond that.
195 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(12345679), cvtR2I(setSimdRealFrom1R(12345678.6)));
196 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-12345679), cvtR2I(setSimdRealFrom1R(-12345678.6)));
197 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(12345678), cvtR2I(setSimdRealFrom1R(12345678.3)));
198 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-12345678), cvtR2I(setSimdRealFrom1R(-12345678.3)));
202 TEST_F(SimdIntegerTest, cvttR2I)
204 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(2), cvttR2I(rSimd_2p25));
205 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-2), cvttR2I(rSimd_m2p25));
206 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(3), cvttR2I(rSimd_3p75));
207 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-3), cvttR2I(rSimd_m3p75));
208 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(3), cvttR2I(rSimd_3p25));
209 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-3), cvttR2I(rSimd_m3p25));
211 // Test multi-byte numbers
212 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(123456), cvttR2I(setSimdRealFrom1R(123456.7)));
213 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-123456), cvttR2I(setSimdRealFrom1R(-123456.7)));
214 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(123456), cvttR2I(setSimdRealFrom1R(123456.3)));
215 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-123456), cvttR2I(setSimdRealFrom1R(-123456.3)));
218 // Test number with more digits than we can represent in single.
219 // Note that our SIMD integers are only 32 bits, so we cannot go beyond that.
220 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(12345678), cvttR2I(setSimdRealFrom1R(12345678.6)));
221 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-12345678), cvttR2I(setSimdRealFrom1R(-12345678.6)));
222 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(12345678), cvttR2I(setSimdRealFrom1R(12345678.3)));
223 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom1I(-12345678), cvttR2I(setSimdRealFrom1R(-12345678.3)));
227 TEST_F(SimdIntegerTest, cvtI2R)
229 GMX_EXPECT_SIMD_REAL_EQ(setSimdRealFrom1R(2.0), cvtI2R(SimdInt32(2)));
230 GMX_EXPECT_SIMD_REAL_EQ(setSimdRealFrom1R(-2.0), cvtI2R(SimdInt32(-2)));
231 GMX_EXPECT_SIMD_REAL_EQ(setSimdRealFrom1R(102448689._real), cvtI2R(SimdInt32(102448689)));
232 GMX_EXPECT_SIMD_REAL_EQ(setSimdRealFrom1R(-102448689._real), cvtI2R(SimdInt32(-102448689)));
234 # endif // GMX_SIMD_HAVE_REAL
236 # if GMX_SIMD_HAVE_INT32_ARITHMETICS
237 TEST_F(SimdIntegerTest, cmpEqAndSelectMask)
239 SimdIBool eq = (iSimd_5_7_9 == iSimd_7_8_9);
240 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(0, 0, 3), selectByMask(iSimd_1_2_3, eq));
243 TEST_F(SimdIntegerTest, cmpEqAndSelectNotMask)
245 SimdIBool eq = (iSimd_5_7_9 == iSimd_7_8_9);
246 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(1, 2, 0), selectByNotMask(iSimd_1_2_3, eq));
249 TEST_F(SimdIntegerTest, cmpLt)
251 SimdIBool lt = (iSimd_5_7_9 < iSimd_7_8_9);
252 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(1, 2, 0), selectByMask(iSimd_1_2_3, lt));
255 TEST_F(SimdIntegerTest, testBits)
257 SimdIBool eq = testBits(setSimdIntFrom3I(1, 0, 2));
258 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(1, 0, 3), selectByMask(iSimd_1_2_3, eq));
260 // Test if we detect only the sign bit being set
261 eq = testBits(setSimdIntFrom1I(0x80000000));
262 GMX_EXPECT_SIMD_INT_EQ(iSimd_1_2_3, selectByMask(iSimd_1_2_3, eq));
265 TEST_F(SimdIntegerTest, andB)
267 SimdIBool eq1 = (iSimd_5_7_9 == iSimd_7_8_9);
268 SimdIBool eq2 = (iSimd_5_7_9 == iSimd_5_7_9);
269 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(0, 0, 3), selectByMask(iSimd_1_2_3, eq1 && eq2));
272 TEST_F(SimdIntegerTest, orB)
274 SimdIBool eq1 = (iSimd_5_7_9 == iSimd_7_8_9);
275 SimdIBool eq2 = (iSimd_5_7_9 == setSimdIntFrom3I(5, 0, 0));
276 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(1, 0, 3), selectByMask(iSimd_1_2_3, eq1 || eq2));
279 TEST_F(SimdIntegerTest, anyTrue)
281 alignas(GMX_SIMD_ALIGNMENT) std::array<std::int32_t, GMX_SIMD_REAL_WIDTH> mem{};
283 // Test the false case
284 EXPECT_FALSE(anyTrue(setZero() < load<SimdInt32>(mem.data())));
286 // Test each bit (these should all be true)
287 for (int i = 0; i < GMX_SIMD_REAL_WIDTH; i++)
291 EXPECT_TRUE(anyTrue(setZero() < load<SimdInt32>(mem.data())))
292 << "Not detecting true in element " << i;
296 TEST_F(SimdIntegerTest, blend)
298 SimdIBool lt = (iSimd_5_7_9 < iSimd_7_8_9);
299 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(4, 5, 3), blend(iSimd_1_2_3, iSimd_4_5_6, lt));
301 # endif // GMX_SIMD_HAVE_INT32_ARITHMETICS
303 # if GMX_SIMD_HAVE_REAL && GMX_SIMD_HAVE_INT32_ARITHMETICS
304 TEST_F(SimdIntegerTest, cvtB2IB)
306 SimdBool eq = (rSimd_c3c4c5 == rSimd_c3c0c4); // eq should be T,F,F
307 SimdIBool eqi = cvtB2IB(eq);
308 GMX_EXPECT_SIMD_INT_EQ(setSimdIntFrom3I(1, 0, 0), selectByMask(iSimd_1_2_3, eqi));
311 TEST_F(SimdIntegerTest, cvtIB2B)
313 SimdIBool eqi = (iSimd_5_7_9 == setSimdIntFrom3I(5, 0, 0)); // eq should be T,F,F
314 SimdBool eq = cvtIB2B(eqi);
315 GMX_EXPECT_SIMD_REAL_EQ(setSimdRealFrom3R(c0, 0, 0), selectByMask(rSimd_c0c1c2, eq));
317 # endif // GMX_SIMD_HAVE_REAL && GMX_SIMD_HAVE_INT32_ARITHMETICS