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Add branch hint for _mi_os_good_alloc_size
In _mi_os_good_alloc_size, overflow caused by alignment size is rare, and this patch added the appropriate branch hint during range checks.
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src/os.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -113,7 +113,7 @@ size_t _mi_os_good_alloc_size(size_t size) {
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else if (size < 8*MiB) align_size = 256*KiB;
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else if (size < 32*MiB) align_size = 1*MiB;
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else align_size = 4*MiB;
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if (size >= (SIZE_MAX - align_size)) return size; // possible overflow?
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if (mi_unlikely(size >= (SIZE_MAX - align_size))) return size; // possible overflow?
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return _mi_align_up(size, align_size);
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}
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