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https://github.com/open-goal/jak-project.git
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cc8801a27b
I noticed that jak 3's compilation was spending a lot of time accessing the `unordered_map`s we use to store constants and symbol types. I repurposed the `EnvironmentMap` originally made for GOOS for this. It turns out that we were copying the entire constant map whenever we encountered a `deftype`, and fixed that too. This speeds up jak3 compiles from ~16 to 11 seconds for me.
47 lines
822 B
C
47 lines
822 B
C
#pragma once
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#include <cstdlib>
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#include "common/common_types.h"
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u32 crc32(const u8* data, size_t size);
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#include <cstring>
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#ifdef __aarch64__
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#include <arm_acle.h>
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inline u32 crc32(const u8* data, size_t size) {
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u32 result = 0xffffffff;
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while (size >= 4) {
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u32 x;
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memcpy(&x, data, 4);
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data += 4;
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size -= 4;
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result = __crc32w(result, x);
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}
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while (size) {
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result = __crc32b(result, *data);
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data++;
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size--;
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}
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return ~result;
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}
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#else
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#include <immintrin.h>
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inline u32 crc32(const u8* data, size_t size) {
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u32 result = 0xffffffff;
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while (size >= 4) {
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u32 x;
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memcpy(&x, data, 4);
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data += 4;
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size -= 4;
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result = _mm_crc32_u32(result, x);
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}
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while (size) {
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result = _mm_crc32_u8(result, *data);
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data++;
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size--;
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}
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return ~result;
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}
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#endif |