Neon-optimized version of the GNU symbol calculation
On 64-bit walleye, improves the linker relocation benchmark from 71.9ms to
70.7ms (1.7% of the run-time).
On a 32-bit device, it improves the linker relocation benchmark from
205.5ms to 201.2ms (2.1% of the run-time).
$ adb shell taskset 10 /data/benchmarktest64/linker-benchmarks/linker-benchmarks --benchmark_repetitions=100 --benchmark_display_aggregates_only
--------------------------------------------------------------------
Benchmark Time CPU Iterations
--------------------------------------------------------------------
BM_gnu_hash_simple_mean 15232 ns 15212 ns 100
BM_gnu_hash_simple_median 15176 ns 15159 ns 100
BM_gnu_hash_simple_stddev 111 ns 110 ns 100
BM_gnu_hash_neon_mean 10265 ns 10252 ns 100
BM_gnu_hash_neon_median 10261 ns 10249 ns 100
BM_gnu_hash_neon_stddev 28.1 ns 23.9 ns 100
Bug: none
Test: linker-unit-tests
Test: linker-benchmarks
Change-Id: I3983bca1dddc9241bb70290ad3651d895f046660
diff --git a/linker/Android.bp b/linker/Android.bp
index e67fca8..55a8625 100644
--- a/linker/Android.bp
+++ b/linker/Android.bp
@@ -178,6 +178,7 @@
name: "linker_sources_arm",
srcs: [
"arch/arm/begin.S",
+ "arch/arm_neon/linker_gnu_hash_neon.cpp",
],
}
@@ -186,6 +187,7 @@
srcs: [
"arch/arm64/begin.S",
"arch/arm64/tlsdesc_resolver.S",
+ "arch/arm_neon/linker_gnu_hash_neon.cpp",
],
}
@@ -458,6 +460,7 @@
"linked_list_test.cpp",
"linker_sleb128_test.cpp",
"linker_utils_test.cpp",
+ "linker_gnu_hash_test.cpp",
// Parts of the linker that we're testing.
"linker_block_allocator.cpp",
@@ -472,4 +475,30 @@
"libbase",
"liblog",
],
+
+ arch: {
+ arm: {
+ srcs: ["arch/arm_neon/linker_gnu_hash_neon.cpp"],
+ },
+ arm64: {
+ srcs: ["arch/arm_neon/linker_gnu_hash_neon.cpp"],
+ },
+ },
+}
+
+cc_benchmark {
+ name: "linker-benchmarks",
+
+ srcs: [
+ "linker_gnu_hash_benchmark.cpp",
+ ],
+
+ arch: {
+ arm: {
+ srcs: ["arch/arm_neon/linker_gnu_hash_neon.cpp"],
+ },
+ arm64: {
+ srcs: ["arch/arm_neon/linker_gnu_hash_neon.cpp"],
+ },
+ },
}
diff --git a/linker/arch/arm_neon/linker_gnu_hash_neon.cpp b/linker/arch/arm_neon/linker_gnu_hash_neon.cpp
new file mode 100644
index 0000000..f4127ce
--- /dev/null
+++ b/linker/arch/arm_neon/linker_gnu_hash_neon.cpp
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+// A Neon vectorized implementation of the GNU symbol hash function.
+
+// This function generally accesses beyond the bounds of the name string. Specifically, it reads
+// each aligned 8-byte chunk containing a byte of the string, including the final NUL byte. This
+// should be acceptable for use with MTE, which uses 16-byte granules. Typically, the function is
+// used to hash strings in an ELF file's string table, where MTE is presumably unaware of the
+// bounds of each symbol, but the linker also hashes the symbol name passed to dlsym.
+
+#include "linker_gnu_hash_neon.h"
+
+#include <arm_neon.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+struct __attribute__((aligned(8))) GnuHashInitEntry {
+ uint64_t ignore_mask;
+ uint32_t accum;
+};
+
+constexpr uint32_t kStep0 = 1;
+constexpr uint32_t kStep1 = kStep0 * 33;
+constexpr uint32_t kStep2 = kStep1 * 33;
+constexpr uint32_t kStep3 = kStep2 * 33;
+constexpr uint32_t kStep4 = kStep3 * 33;
+constexpr uint32_t kStep5 = kStep4 * 33;
+constexpr uint32_t kStep6 = kStep5 * 33;
+constexpr uint32_t kStep7 = kStep6 * 33;
+constexpr uint32_t kStep8 = kStep7 * 33;
+constexpr uint32_t kStep9 = kStep8 * 33;
+constexpr uint32_t kStep10 = kStep9 * 33;
+constexpr uint32_t kStep11 = kStep10 * 33;
+
+// Step by -1 through -7: 33 * 0x3e0f83e1 == 1 (mod 2**32)
+constexpr uint32_t kStepN1 = kStep0 * 0x3e0f83e1;
+constexpr uint32_t kStepN2 = kStepN1 * 0x3e0f83e1;
+constexpr uint32_t kStepN3 = kStepN2 * 0x3e0f83e1;
+constexpr uint32_t kStepN4 = kStepN3 * 0x3e0f83e1;
+constexpr uint32_t kStepN5 = kStepN4 * 0x3e0f83e1;
+constexpr uint32_t kStepN6 = kStepN5 * 0x3e0f83e1;
+constexpr uint32_t kStepN7 = kStepN6 * 0x3e0f83e1;
+
+// Calculate the GNU hash and string length of the symbol name.
+//
+// The hash calculation is an optimized version of this function:
+//
+// uint32_t calculate_gnu_hash(const uint8_t* name) {
+// uint32_t h = 5381;
+// for (; *name != '\0'; ++name) {
+// h *= 33;
+// h += *name;
+// }
+// return h;
+// }
+//
+std::pair<uint32_t, uint32_t> calculate_gnu_hash_neon(const char* name) {
+
+ // The input string may be misaligned by 0-7 bytes (K). This function loads the first aligned
+ // 8-byte chunk, then counteracts the misalignment:
+ // - The initial K bytes are set to 0xff in the working chunk vector.
+ // - The accumulator is initialized to 5381 * modinv(33)**K.
+ // - The accumulator also cancels out each initial 0xff byte.
+ // If we could set bytes to NUL instead, then the accumulator wouldn't need to cancel out the
+ // 0xff values, but this would break the NUL check.
+
+ static const struct GnuHashInitEntry kInitTable[] = {
+ { // (addr&7) == 0
+ 0ull,
+ 5381u*kStep0,
+ }, { // (addr&7) == 1
+ 0xffull,
+ 5381u*kStepN1 - 0xffu*kStepN1,
+ }, { // (addr&7) == 2
+ 0xffffull,
+ 5381u*kStepN2 - 0xffu*kStepN1 - 0xffu*kStepN2,
+ }, { // (addr&7) == 3
+ 0xffffffull,
+ 5381u*kStepN3 - 0xffu*kStepN1 - 0xffu*kStepN2 - 0xffu*kStepN3,
+ }, { // (addr&7) == 4
+ 0xffffffffull,
+ 5381u*kStepN4 - 0xffu*kStepN1 - 0xffu*kStepN2 - 0xffu*kStepN3 - 0xffu*kStepN4,
+ }, { // (addr&7) == 5
+ 0xffffffffffull,
+ 5381u*kStepN5 - 0xffu*kStepN1 - 0xffu*kStepN2 - 0xffu*kStepN3 - 0xffu*kStepN4 - 0xffu*kStepN5,
+ }, { // (addr&7) == 6
+ 0xffffffffffffull,
+ 5381u*kStepN6 - 0xffu*kStepN1 - 0xffu*kStepN2 - 0xffu*kStepN3 - 0xffu*kStepN4 - 0xffu*kStepN5 - 0xffu*kStepN6,
+ }, { // (addr&7) == 7
+ 0xffffffffffffffull,
+ 5381u*kStepN7 - 0xffu*kStepN1 - 0xffu*kStepN2 - 0xffu*kStepN3 - 0xffu*kStepN4 - 0xffu*kStepN5 - 0xffu*kStepN6 - 0xffu*kStepN7,
+ },
+ };
+
+ uint8_t offset = reinterpret_cast<uintptr_t>(name) & 7;
+ const uint64_t* chunk_ptr = reinterpret_cast<const uint64_t*>(reinterpret_cast<uintptr_t>(name) & ~7);
+ const struct GnuHashInitEntry* entry = &kInitTable[offset];
+
+ uint8x8_t chunk = vld1_u8(reinterpret_cast<const uint8_t*>(chunk_ptr));
+ chunk |= vld1_u8(reinterpret_cast<const uint8_t*>(&entry->ignore_mask));
+
+ uint32x4_t accum_lo = { 0 };
+ uint32x4_t accum_hi = { entry->accum, 0, 0, 0 };
+ const uint16x4_t kInclineVec = { kStep3, kStep2, kStep1, kStep0 };
+ const uint32x4_t kStep8Vec = vdupq_n_u32(kStep8);
+ uint8x8_t is_nul;
+ uint16x8_t expand;
+
+ while (1) {
+ // Exit the loop if any of the 8 bytes is NUL.
+ is_nul = vceq_u8(chunk, (uint8x8_t){ 0 });
+ expand = vmovl_u8(chunk);
+ uint64x1_t is_nul_64 = vreinterpret_u64_u8(is_nul);
+ if (vget_lane_u64(is_nul_64, 0)) break;
+
+ // Multiply both accumulators by 33**8.
+ accum_lo = vmulq_u32(accum_lo, kStep8Vec);
+ accum_hi = vmulq_u32(accum_hi, kStep8Vec);
+
+ // Multiply each 4-piece subchunk by (33**3, 33**2, 33*1, 1), then accumulate the result. The lo
+ // accumulator will be behind by 33**4 until the very end of the computation.
+ accum_lo = vmlal_u16(accum_lo, vget_low_u16(expand), kInclineVec);
+ accum_hi = vmlal_u16(accum_hi, vget_high_u16(expand), kInclineVec);
+
+ // Load the next chunk.
+ chunk = vld1_u8(reinterpret_cast<const uint8_t*>(++chunk_ptr));
+ }
+
+ // Reverse the is-NUL vector so we can use clz to count the number of remaining bytes.
+ is_nul = vrev64_u8(is_nul);
+ const uint64_t is_nul_u64 = vget_lane_u64(vreinterpret_u64_u8(is_nul), 0);
+ const uint32_t num_valid_bits = is_nul_u64 == 0 ? 64 : __builtin_clzll(is_nul_u64);
+
+ const uint32_t name_len = reinterpret_cast<const char*>(chunk_ptr) - name + (num_valid_bits >> 3);
+
+ static const uint32_t kFinalStepTable[] = {
+ kStep4, kStep0, // 0 remaining bytes
+ kStep5, kStep1, // 1 remaining byte
+ kStep6, kStep2, // 2 remaining bytes
+ kStep7, kStep3, // 3 remaining bytes
+ kStep8, kStep4, // 4 remaining bytes
+ kStep9, kStep5, // 5 remaining bytes
+ kStep10, kStep6, // 6 remaining bytes
+ kStep11, kStep7, // 7 remaining bytes
+ };
+
+ // Advance the lo/hi accumulators appropriately for the number of remaining bytes. Multiply 33**4
+ // into the lo accumulator to catch it up with the hi accumulator.
+ const uint32_t* final_step = &kFinalStepTable[num_valid_bits >> 2];
+ accum_lo = vmulq_u32(accum_lo, vdupq_n_u32(final_step[0]));
+ accum_lo = vmlaq_u32(accum_lo, accum_hi, vdupq_n_u32(final_step[1]));
+
+ static const uint32_t kFinalInclineTable[] = {
+ 0, kStep6, kStep5, kStep4, kStep3, kStep2, kStep1, kStep0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ };
+
+ // Prepare a vector to multiply powers of 33 into each of the remaining bytes.
+ const uint32_t* const incline = &kFinalInclineTable[8 - (num_valid_bits >> 3)];
+ const uint32x4_t incline_lo = vld1q_u32(incline);
+ const uint32x4_t incline_hi = vld1q_u32(incline + 4);
+
+ // Multiply 33 into each of the remaining 4-piece vectors, then accumulate everything into
+ // accum_lo. Combine everything into a single 32-bit result.
+ accum_lo = vmlaq_u32(accum_lo, vmovl_u16(vget_low_u16(expand)), incline_lo);
+ accum_lo = vmlaq_u32(accum_lo, vmovl_u16(vget_high_u16(expand)), incline_hi);
+
+ uint32x2_t sum = vadd_u32(vget_low_u32(accum_lo), vget_high_u32(accum_lo));
+ const uint32_t hash = sum[0] + sum[1];
+
+ return { hash, name_len };
+}
diff --git a/linker/arch/arm_neon/linker_gnu_hash_neon.h b/linker/arch/arm_neon/linker_gnu_hash_neon.h
new file mode 100644
index 0000000..647d640
--- /dev/null
+++ b/linker/arch/arm_neon/linker_gnu_hash_neon.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <utility>
+
+std::pair<uint32_t, uint32_t> calculate_gnu_hash_neon(const char* name);
diff --git a/linker/linker_gnu_hash.h b/linker/linker_gnu_hash.h
index 8375743..f85e801 100644
--- a/linker/linker_gnu_hash.h
+++ b/linker/linker_gnu_hash.h
@@ -32,7 +32,18 @@
#include <utility>
-static inline std::pair<uint32_t, uint32_t> calculate_gnu_hash(const char* name) {
+#if defined(__arm__) || defined(__aarch64__)
+#define USE_GNU_HASH_NEON 1
+#else
+#define USE_GNU_HASH_NEON 0
+#endif
+
+#if USE_GNU_HASH_NEON
+#include "arch/arm_neon/linker_gnu_hash_neon.h"
+#endif
+
+__attribute__((unused))
+static std::pair<uint32_t, uint32_t> calculate_gnu_hash_simple(const char* name) {
uint32_t h = 5381;
const uint8_t* name_bytes = reinterpret_cast<const uint8_t*>(name);
#pragma unroll 8
@@ -41,3 +52,11 @@
}
return { h, reinterpret_cast<const char*>(name_bytes) - name };
}
+
+static inline std::pair<uint32_t, uint32_t> calculate_gnu_hash(const char* name) {
+#if USE_GNU_HASH_NEON
+ return calculate_gnu_hash_neon(name);
+#else
+ return calculate_gnu_hash_simple(name);
+#endif
+}
diff --git a/linker/linker_gnu_hash_benchmark.cpp b/linker/linker_gnu_hash_benchmark.cpp
new file mode 100644
index 0000000..dbbbc00
--- /dev/null
+++ b/linker/linker_gnu_hash_benchmark.cpp
@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <benchmark/benchmark.h>
+
+#include "linker_gnu_hash.h"
+
+// 250 symbols from the relocations of system/lib/libhwbinder.so in aosp/master, aosp_walleye.
+// ROT13-encoded so as not to pollute code search.
+static const char* const kSampleSymbolList[] = {
+ "_MA7naqebvq8uneqjner9OUjOvaqre8genafnpgRwEXAF0_6CnepryRCF2_wAFg3__18shapgvbaVSiEF2_RRR",
+ "_MA7naqebvq8uneqjner9OUjOvaqre11yvaxGbQrnguREXAF_2fcVAF0_7VOvaqre14QrnguErpvcvragRRRCiw",
+ "_MA7naqebvq8uneqjner9OUjOvaqre13hayvaxGbQrnguREXAF_2jcVAF0_7VOvaqre14QrnguErpvcvragRRRCiwCF5_",
+ "_MAX7naqebvq8uneqjner7VOvaqre13purpxFhopynffRCXi",
+ "_MA7naqebvq8uneqjner9OUjOvaqre12nggnpuBowrpgRCXiCiF4_CSiF3_F4_F4_R",
+ "_MAX7naqebvq8uneqjner9OUjOvaqre10svaqBowrpgRCXi",
+ "_MA7naqebvq8uneqjner9OUjOvaqre12qrgnpuBowrpgRCXi",
+ "_MA7naqebvq8uneqjner9OUjOvaqre11ybpnyOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqre12erzbgrOvaqreRi",
+ "_MA7naqebvq8uneqjner9OUjOvaqreQ1Ri",
+ "_MA7naqebvq8uneqjner9OUjOvaqreQ0Ri",
+ "_MA7naqebvq8uneqjner9OUjOvaqre10baGenafnpgRwEXAF0_6CnepryRCF2_wAFg3__18shapgvbaVSiEF2_RRR",
+ "_MGi0_a12_A7naqebvq8uneqjner9OUjOvaqreQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner9OUjOvaqreQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq8uneqjner11OcUjErsOnfrQ1Ri",
+ "_MA7naqebvq8uneqjner11OcUjErsOnfrQ0Ri",
+ "_MA7naqebvq8uneqjner11OcUjErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq8uneqjner11OcUjErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq8uneqjner11OcUjErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MGi0_a12_A7naqebvq8uneqjner11OcUjErsOnfrQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner11OcUjErsOnfrQ0Ri",
+ "_MGi0_a16_A7naqebvq8uneqjner11OcUjErsOnfr10baSvefgErsRi",
+ "_MGi0_a20_A7naqebvq8uneqjner11OcUjErsOnfr15baYnfgFgebatErsRCXi",
+ "_MGi0_a24_A7naqebvq8uneqjner11OcUjErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MAX7naqebvq8uneqjner7VOvaqre13purpxFhopynffRCXi",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MA7naqebvq8uneqjner7VOvaqre11ybpnyOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqre12erzbgrOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqreQ1Ri",
+ "_MA7naqebvq8uneqjner7VOvaqreQ0Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner7VOvaqreQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner7VOvaqreQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MAX7naqebvq8uneqjner7VOvaqre13purpxFhopynffRCXi",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MA7naqebvq8uneqjner7VOvaqre11ybpnyOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqre12erzbgrOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqreQ1Ri",
+ "_MA7naqebvq8uneqjner7VOvaqreQ0Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner7VOvaqreQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner7VOvaqreQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre8genafnpgRwEXAF0_6CnepryRCF2_wAFg3__18shapgvbaVSiEF2_RRR",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre11yvaxGbQrnguREXAF_2fcVAF0_7VOvaqre14QrnguErpvcvragRRRCiw",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre13hayvaxGbQrnguREXAF_2jcVAF0_7VOvaqre14QrnguErpvcvragRRRCiwCF5_",
+ "_MAX7naqebvq8uneqjner7VOvaqre13purpxFhopynffRCXi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre12nggnpuBowrpgRCXiCiF4_CSiF3_F4_F4_R",
+ "_MAX7naqebvq8uneqjner10OcUjOvaqre10svaqBowrpgRCXi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre12qrgnpuBowrpgRCXi",
+ "_MA7naqebvq8uneqjner7VOvaqre11ybpnyOvaqreRi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre12erzbgrOvaqreRi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqreQ1Ri",
+ "_MA7naqebvq8uneqjner10OcUjOvaqreQ0Ri",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre10baSvefgErsRi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq8uneqjner10OcUjOvaqre20baVapFgebatNggrzcgrqRwCXi",
+ "_MGi0_a12_A7naqebvq8uneqjner10OcUjOvaqreQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner10OcUjOvaqreQ0Ri",
+ "_MGi0_a16_A7naqebvq8uneqjner10OcUjOvaqre10baSvefgErsRi",
+ "_MGi0_a20_A7naqebvq8uneqjner10OcUjOvaqre15baYnfgFgebatErsRCXi",
+ "_MGi0_a24_A7naqebvq8uneqjner10OcUjOvaqre20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MAX7naqebvq8uneqjner7VOvaqre13purpxFhopynffRCXi",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MA7naqebvq8uneqjner7VOvaqre11ybpnyOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqre12erzbgrOvaqreRi",
+ "_MA7naqebvq8uneqjner7VOvaqreQ1Ri",
+ "_MA7naqebvq8uneqjner7VOvaqreQ0Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner7VOvaqreQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner7VOvaqreQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchgQ2Ri",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchgQ0Ri",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg5cevagRCXpw",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg10zbirVaqragRv",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg10chfuOhaqyrRi",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg9cbcOhaqyrRi",
+ "__pkn_cher_iveghny",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq8uneqjner10VVagresnprQ1Ri",
+ "_MA7naqebvq8uneqjner10VVagresnprQ0Ri",
+ "__pkn_cher_iveghny",
+ "_MGi0_a12_A7naqebvq8uneqjner10VVagresnprQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner10VVagresnprQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MAFg3__114onfvp_vbfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MAFg3__114onfvp_vbfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MGua8_AFg3__114onfvp_vbfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MGua8_AFg3__114onfvp_vbfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MGi0_a12_AFg3__114onfvp_vbfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MGi0_a12_AFg3__114onfvp_vbfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MAFg3__113onfvp_vfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MAFg3__113onfvp_vfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MGi0_a12_AFg3__113onfvp_vfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MGi0_a12_AFg3__113onfvp_vfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MAFg3__113onfvp_bfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MAFg3__113onfvp_bfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MGi0_a12_AFg3__113onfvp_bfgernzVpAF_11pune_genvgfVpRRRQ1Ri",
+ "_MGi0_a12_AFg3__113onfvp_bfgernzVpAF_11pune_genvgfVpRRRQ0Ri",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR5vzohrREXAF_6ybpnyrR",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR6frgohsRCpv",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR4flapRi",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR9fubjznalpRi",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR6kftrgaRCpv",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR5hsybjRi",
+ "_MAFg3__115onfvp_fgernzohsVpAF_11pune_genvgfVpRRR6kfchgaRCXpv",
+ "_MA7naqebvq8uneqjner12CebprffFgngrQ1Ri",
+ "_MA7naqebvq8uneqjner12CebprffFgngrQ0Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner12CebprffFgngrQ1Ri",
+ "_MGi0_a12_A7naqebvq8uneqjner12CebprffFgngrQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq6Guernq3ehaRCXpvw",
+ "_MA7naqebvq6Guernq11erdhrfgRkvgRi",
+ "_MA7naqebvq6Guernq10ernqlGbEhaRi",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq6GuernqQ1Ri",
+ "_MA7naqebvq6GuernqQ0Ri",
+ "_MA7naqebvq6Guernq3ehaRCXpvw",
+ "_MA7naqebvq6Guernq11erdhrfgRkvgRi",
+ "_MA7naqebvq6Guernq10ernqlGbEhaRi",
+ "__pkn_cher_iveghny",
+ "_MGi0_a12_A7naqebvq6GuernqQ1Ri",
+ "_MGi0_a12_A7naqebvq6GuernqQ0Ri",
+ "_MA7naqebvq7ErsOnfr10baSvefgErsRi",
+ "_MA7naqebvq7ErsOnfr15baYnfgFgebatErsRCXi",
+ "_MA7naqebvq7ErsOnfr20baVapFgebatNggrzcgrqRwCXi",
+ "_MA7naqebvq7ErsOnfr13baYnfgJrnxErsRCXi",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchgQ2Ri",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg5cevagRCXpw",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg10zbirVaqragRv",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg10chfuOhaqyrRi",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg9cbcOhaqyrRi",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchgQ2Ri",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg5cevagRCXpw",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg10zbirVaqragRv",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg10chfuOhaqyrRi",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg9cbcOhaqyrRi",
+ "_MA7naqebvq8uneqjner10GrkgBhgchgQ2Ri",
+ "_MA7naqebvq8uneqjner10GrkgBhgchgQ0Ri",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "__pkn_cher_iveghny",
+ "_MGIA7naqebvq8uneqjner9OUjOvaqreR",
+ "_MGPA7naqebvq8uneqjner9OUjOvaqreR0_AF0_7VOvaqreR",
+ "_MGPA7naqebvq8uneqjner9OUjOvaqreR0_AF0_7VOvaqreR",
+ "_MGIA7naqebvq8uneqjner9OUjOvaqreR",
+ "_MGIA7naqebvq8uneqjner11OcUjErsOnfrR",
+ "_MGIA7naqebvq8uneqjner11OcUjErsOnfrR",
+ "_MGIA7naqebvq8uneqjner7VOvaqreR",
+ "_MGIA7naqebvq8uneqjner7VOvaqreR",
+ "_MGIA7naqebvq8uneqjner10OcUjOvaqreR",
+ "_MGPA7naqebvq8uneqjner10OcUjOvaqreR0_AF0_7VOvaqreR",
+ "_MGPA7naqebvq8uneqjner10OcUjOvaqreR0_AF0_7VOvaqreR",
+ "_MGIA7naqebvq8uneqjner10OcUjOvaqreR",
+ "_MGIA7naqebvq8uneqjner10VVagresnprR",
+ "_MGIA7naqebvq8uneqjner10VVagresnprR",
+ "_MGIAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR0_AF_14onfvp_vbfgernzVpF2_RR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR0_AF_13onfvp_vfgernzVpF2_RR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR0_AF_13onfvp_vfgernzVpF2_RR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR8_AF_13onfvp_bfgernzVpF2_RR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR8_AF_13onfvp_bfgernzVpF2_RR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR0_AF_14onfvp_vbfgernzVpF2_RR",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR0_AF_14onfvp_vbfgernzVpF2_RR",
+ "_MGIAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR",
+ "_MGIAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR",
+ "_MGIA7naqebvq8uneqjner12CebprffFgngrR",
+ "_MGIA7naqebvq8uneqjner12CebprffFgngrR",
+ "_MGIA7naqebvq8uneqjner10CbbyGuernqR",
+ "_MGPA7naqebvq8uneqjner10CbbyGuernqR0_AF_6GuernqR",
+ "_MGPA7naqebvq8uneqjner10CbbyGuernqR0_AF_6GuernqR",
+ "_MGIA7naqebvq8uneqjner10CbbyGuernqR",
+ "_MGIA7naqebvq8uneqjner9OUjOvaqreR",
+ "__fgnpx_pux_thneq",
+ "_MGIA7naqebvq8uneqjner11OcUjErsOnfrR",
+ "_MGIA7naqebvq12FbegrqIrpgbeVAF_16xrl_inyhr_cnve_gVCXiAF_8uneqjner10OcUjOvaqre13BowrpgZnantre7ragel_gRRRRR",
+ "_MGPA7naqebvq8uneqjner10OcUjOvaqreR0_AF0_7VOvaqreR",
+ "_MGIA7naqebvq8uneqjner10OcUjOvaqreR",
+ "_MGIA7naqebvq6IrpgbeVAF_8uneqjner10OcUjOvaqre8BovghnelRRR",
+ "_MGGA7naqebvq8uneqjner10OcUjOvaqreR",
+ "_MGIA7naqebvq6IrpgbeVAF_2fcVAF_8uneqjner18OhssrerqGrkgBhgchg11OhssreFgngrRRRRR",
+ "_MA7naqebvq8uneqjner18OhssrerqGrkgBhgchg16guernqQrfgehpgbeRCi",
+ "_MGIA7naqebvq8uneqjner18OhssrerqGrkgBhgchgR",
+ "_MA7naqebvq8uneqjner12tGrkgOhssrefR",
+ "_MGIA7naqebvq8uneqjner18OhssrerqGrkgBhgchg11OhssreFgngrR",
+ "_MA7naqebvq8uneqjner14VCPGuernqFgngr16guernqQrfgehpgbeRCi",
+ "_MA7naqebvq8uneqjner14VCPGuernqFgngr10serrOhssreRCAF0_6CnepryRCXuwCXlwCi",
+ "_MA7naqebvq8uneqjner18gur_pbagrkg_bowrpgR",
+ "_MA7naqebvq9PnyyFgnpx18trgPheeragVagreanyRv",
+ "_MA7naqebvq9PnyyFgnpx16ybtFgnpxVagreanyRCXpCXF0_19naqebvq_YbtCevbevgl",
+ "_MGIA7naqebvq6IrpgbeVCAF_8uneqjner9OUjOvaqreRRR",
+ "_MGIA7naqebvq6IrpgbeVCAF_7ErsOnfr12jrnxers_glcrRRR",
+ "_MGIA7naqebvq6IrpgbeVCAF_7ErsOnfrRRR",
+ "_MFg7abguebj",
+ "_MGPAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR0_AF_13onfvp_vfgernzVpF2_RR",
+ "_MGIAFg3__118onfvp_fgevatfgernzVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR",
+ "_MGIAFg3__115onfvp_fgevatohsVpAF_11pune_genvgfVpRRAF_9nyybpngbeVpRRRR",
+ "_MAFg3__15pglcrVpR2vqR",
+ "_MA7naqebvq8uneqjner13tCebprffZhgrkR",
+ "_MA7naqebvq8uneqjner8tCebprffR",
+ "_MGIA7naqebvq8uneqjner12CebprffFgngrR",
+ "_MGIA7naqebvq6IrpgbeVAF_8uneqjner12CebprffFgngr12unaqyr_ragelRRR",
+ "_MGIA7naqebvq12FbegrqIrpgbeVAF_16xrl_inyhr_cnve_gVAF_8Fgevat16RAF_2fcVAF_8uneqjner7VOvaqreRRRRRRR",
+ "_MGIA7naqebvq8uneqjner10CbbyGuernqR",
+ "_MGGA7naqebvq8uneqjner12CebprffFgngrR",
+ "_MGIA7naqebvq6IrpgbeVvRR",
+ "_MGIA7naqebvq8uneqjner13YbtGrkgBhgchgR",
+};
+
+static void BM_gnu_hash_simple(benchmark::State& state) {
+ for (auto _ : state) {
+ for (const char* sym_name : kSampleSymbolList) {
+ benchmark::DoNotOptimize(calculate_gnu_hash_simple(sym_name));
+ }
+ }
+}
+
+BENCHMARK(BM_gnu_hash_simple);
+
+#if USE_GNU_HASH_NEON
+
+static void BM_gnu_hash_neon(benchmark::State& state) {
+ for (auto _ : state) {
+ for (const char* sym_name : kSampleSymbolList) {
+ benchmark::DoNotOptimize(calculate_gnu_hash_neon(sym_name));
+ }
+ }
+}
+
+BENCHMARK(BM_gnu_hash_neon);
+
+#endif // USE_GNU_HASH_NEON
+
+BENCHMARK_MAIN();
diff --git a/linker/linker_gnu_hash_test.cpp b/linker/linker_gnu_hash_test.cpp
new file mode 100644
index 0000000..a289749
--- /dev/null
+++ b/linker/linker_gnu_hash_test.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <gtest/gtest.h>
+
+#include "linker_gnu_hash.h"
+
+TEST(linker_gnu_hash, compare_neon_to_simple) {
+#if USE_GNU_HASH_NEON
+ auto check_input = [&](const char* name) {
+ auto expected = calculate_gnu_hash_simple(name);
+ auto actual = calculate_gnu_hash_neon(name);
+ EXPECT_EQ(expected.first, actual.first) << name;
+ EXPECT_EQ(expected.second, actual.second) << name;
+ };
+
+ __attribute__((aligned(8))) const char test1[] = "abcdefghijklmnop\0qrstuvwxyz";
+ for (size_t i = 0; i < sizeof(test1) - 1; ++i) {
+ check_input(&test1[i]);
+ }
+
+ __attribute__((aligned(8))) const char test2[] = "abcdefghijklmnopqrs\0tuvwxyz";
+ for (size_t i = 0; i < sizeof(test2) - 1; ++i) {
+ check_input(&test2[i]);
+ }
+
+ __attribute__((aligned(8))) const char test3[] = "abcdefghijklmnopqrstuv\0wxyz";
+ for (size_t i = 0; i < sizeof(test3) - 1; ++i) {
+ check_input(&test3[i]);
+ }
+#else
+ GTEST_SKIP() << "This test is only implemented on arm/arm64";
+#endif
+}