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Make zlib go faster

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Justine Tunney 2022-09-18 06:30:45 -07:00
parent be29b709b7
commit 224c12f54d
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GPG key ID: BE714B4575D6E328
6 changed files with 16 additions and 43 deletions
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8
third_party/zlib/insert_string.internal.h vendored
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@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_THIRD_PARTY_ZLIB_INSERT_STRING_H_
#define COSMOPOLITAN_THIRD_PARTY_ZLIB_INSERT_STRING_H_
#include "libc/nexgen32e/x86feature.h"
#include "third_party/zlib/deflate.internal.h"
#include "third_party/zlib/zutil.internal.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
@ -16,7 +17,7 @@ COSMOPOLITAN_C_START_
// clang-format off
#if defined(CRC32_SIMD_SSE42_PCLMUL)
#include <smmintrin.h> /* Required to make MSVC bot build pass. */
// #include <smmintrin.h> /* Required to make MSVC bot build pass. */
#if defined(__clang__) || defined(__GNUC__)
#define TARGET_CPU_WITH_CRC __attribute__((target("sse4.2")))
@ -50,7 +51,6 @@ COSMOPOLITAN_C_START_
#if defined(TARGET_CPU_WITH_CRC)
TARGET_CPU_WITH_CRC
local INLINE Pos insert_string_simd(deflate_state* const s, const Pos str) {
Pos ret;
unsigned *ip, val, h = 0;
@ -61,7 +61,7 @@ local INLINE Pos insert_string_simd(deflate_state* const s, const Pos str) {
if (s->level >= 6) val &= 0xFFFFFF;
/* Compute hash from the CRC32C of |val|. */
h = _cpu_crc32c_hash_u32(h, val);
asm("crc32\t%1,%0" : "+r"(h) : "rm"(val));
ret = s->head[h & s->hash_mask];
s->head[h & s->hash_mask] = str;
@ -129,7 +129,7 @@ local INLINE Pos insert_string(deflate_state* const s, const Pos str) {
* the Rabin-Karp hash instead.
*/ /* FALLTHROUGH Rabin-Karp */
#elif defined(TARGET_CPU_WITH_CRC) && defined(CRC32_SIMD_SSE42_PCLMUL)
if (x86_cpu_enable_simd) return insert_string_simd(s, str);
if (X86_HAVE(SSE4_2)) return insert_string_simd(s, str);
#elif defined(TARGET_CPU_WITH_CRC) && defined(CRC32_ARMV8_CRC32)
if (arm_cpu_enable_crc32) return insert_string_simd(s, str);
#endif