diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/benchmarks/corelib/tools/qstring/main.cpp | 110 | ||||
| -rw-r--r-- | tests/benchmarks/corelib/tools/qstring/qstring.pro | 3 |
2 files changed, 112 insertions, 1 deletions
diff --git a/tests/benchmarks/corelib/tools/qstring/main.cpp b/tests/benchmarks/corelib/tools/qstring/main.cpp index 4e5d1c0..e1800c0 100644 --- a/tests/benchmarks/corelib/tools/qstring/main.cpp +++ b/tests/benchmarks/corelib/tools/qstring/main.cpp @@ -274,6 +274,110 @@ static bool equals2_sse2_aligning(ushort *p1, ushort *p2, int len) return equals2_shortwise(p1, p2, len); } + +template<int N> static inline bool equals2_ssse3_alignr(__m128i *m1, __m128i *m2, int len) +{ + __m128i lower = _mm_load_si128(m1); + while (len > 8) { + __m128i upper = _mm_load_si128(m1 + 1); + __m128i correct; + correct = _mm_alignr_epi8(upper, lower, N); + + __m128i q2 = _mm_loadu_si128(m2); + __m128i cmp = _mm_cmpeq_epi16(correct, q2); + if (ushort(_mm_movemask_epi8(cmp)) != 0xffff) + return false; + + len -= 8; + ++m2; + ++m1; + lower = upper; + } + + // tail + return len == 0 || equals2_shortwise((ushort *)m1 + N / 2, (ushort*)m2, len); +} + +static inline bool equals2_ssse3_aligned(__m128i *m1, __m128i *m2, int len) +{ + while (len > 8) { + __m128i q2 = _mm_loadu_si128(m2); + __m128i cmp = _mm_cmpeq_epi16(*m1, q2); + if (ushort(_mm_movemask_epi8(cmp)) != 0xffff) + return false; + + len -= 8; + ++m1; + ++m2; + } + return len == 0 || equals2_shortwise((ushort *)m1, (ushort *)m2, len); +} + +//#ifdef __SSSE3__ +static bool equals2_ssse3(ushort *p1, ushort *p2, int len) +{ + // p1 & 0xf can be: + // 0, 2, 4, 6, 8, 10, 12, 14 + // If it's 0, we're aligned + // If it's not, then we're interested in the 16 - (p1 & 0xf) bytes only + + if (len > 8) { + // find the last aligned position below the p1 memory + __m128i *m1 = (__m128i *)(quintptr(p1) & ~0xf); + __m128i *m2 = (__m128i *)p2; + uchar diff = quintptr(p1) - quintptr(m1); + + // diff contains the number of extra bytes + if (diff < 8) { + if (diff < 4) { + if (diff == 0) + return equals2_ssse3_aligned(m1, m2, len); + else // diff == 2 + return equals2_ssse3_alignr<2>(m1, m2, len); + } else { + if (diff == 4) + return equals2_ssse3_alignr<4>(m1, m2, len); + else // diff == 6 + return equals2_ssse3_alignr<6>(m1, m2, len); + } + } else { + if (diff < 12) { + if (diff == 8) + return equals2_ssse3_alignr<8>(m1, m2, len); + else // diff == 10 + return equals2_ssse3_alignr<10>(m1, m2, len); + } else { + if (diff == 12) + return equals2_ssse3_alignr<12>(m1, m2, len); + else // diff == 14 + return equals2_ssse3_alignr<14>(m1, m2, len); + } + } + +// switch (diff) { +// case 0: +// return equals2_ssse3_aligned(m1, m2, len); +// case 2: +// return equals2_ssse3_alignr<2>(m1, m2, len); +// case 4: +// return equals2_ssse3_alignr<4>(m1, m2, len); +// case 6: +// return equals2_ssse3_alignr<6>(m1, m2, len); +// case 8: +// return equals2_ssse3_alignr<8>(m1, m2, len); +// case 10: +// return equals2_ssse3_alignr<10>(m1, m2, len); +// case 12: +// return equals2_ssse3_alignr<12>(m1, m2, len); +// case 14: +// return equals2_ssse3_alignr<14>(m1, m2, len); +// } + } + + // tail + return equals2_shortwise(p1, p2, len); +} +//#endif #endif void tst_QString::equals2_data() const @@ -287,6 +391,9 @@ void tst_QString::equals2_data() const #ifdef __SSE2__ QTest::newRow("sse2") << 4; QTest::newRow("sse2_aligning") << 5; +#ifdef __SSSE3__ + QTest::newRow("ssse3") << 6; +#endif #endif } @@ -338,6 +445,9 @@ void tst_QString::equals2() const #ifdef __SSE2__ equals2_sse2, // 4 equals2_sse2_aligning, // 5 +#ifdef __SSSE3__ + equals2_ssse3, // 6 +#endif #endif 0 }; diff --git a/tests/benchmarks/corelib/tools/qstring/qstring.pro b/tests/benchmarks/corelib/tools/qstring/qstring.pro index 388e3c2..bc6254c 100644 --- a/tests/benchmarks/corelib/tools/qstring/qstring.pro +++ b/tests/benchmarks/corelib/tools/qstring/qstring.pro @@ -14,4 +14,5 @@ wince*:{ DEFINES += SRCDIR=\\\"$$PWD/\\\" } -sse2:QMAKE_CXXFLAGS += -msse2 +ssse3:QMAKE_FLAGS += -mssse3 +else:sse2:QMAKE_CXXFLAGS += -msse2 |