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Lines 82-88
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BIT_UTIL_INLINE uint64_t |
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BIT_UTIL_INLINE uint64_t |
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pow2_ceil_u64(uint64_t x) { |
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pow2_ceil_u64(uint64_t x) { |
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#if (defined(__amd64__) || defined(__x86_64__) || defined(JEMALLOC_HAVE_BUILTIN_CLZ)) |
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#if ((defined(__amd64__) || defined(__x86_64__) || defined(JEMALLOC_HAVE_BUILTIN_CLZ))) && !defined(__ILP32__) |
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if(unlikely(x <= 1)) { |
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if(unlikely(x <= 1)) { |
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return x; |
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return x; |
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} |
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} |
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Lines 112-123
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BIT_UTIL_INLINE uint32_t |
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BIT_UTIL_INLINE uint32_t |
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pow2_ceil_u32(uint32_t x) { |
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pow2_ceil_u32(uint32_t x) { |
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#if ((defined(__i386__) || defined(JEMALLOC_HAVE_BUILTIN_CLZ)) && (!defined(__s390__))) |
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#if (((defined(__i386__) || (defined(__amd64__) || defined(__x86_64__)) && defined(__ILP32__)) || defined(JEMALLOC_HAVE_BUILTIN_CLZ)) && (!defined(__s390__))) |
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if(unlikely(x <= 1)) { |
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if(unlikely(x <= 1)) { |
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return x; |
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return x; |
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} |
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} |
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size_t msb_on_index; |
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size_t msb_on_index; |
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#if (defined(__i386__)) |
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#if (defined(__i386__)) || defined(__ILP32__) |
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asm ("bsr %1, %0" |
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asm ("bsr %1, %0" |
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: "=r"(msb_on_index) // Outputs. |
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: "=r"(msb_on_index) // Outputs. |
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: "r"(x-1) // Inputs. |
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: "r"(x-1) // Inputs. |
