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Remove cross-platform macros and dead code

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This commit is contained in:
Nick Terrell
2017-05-16 17:16:00 -07:00
parent 8eb7a32527
commit 358280f107
5 changed files with 1 additions and 154 deletions
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contrib/linux-kernel/lib/zstd/zstd_internal.h
-13
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@@ -238,20 +238,7 @@ void ZSTD_stackFree(void* opaque, void* address);
MEM_STATIC U32 ZSTD_highbit32(U32 val)
{
# if defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */
return 31 - __builtin_clz(val);
# else /* Software version */
static const int DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 };
U32 v = val;
int r;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
r = DeBruijnClz[(U32)(v * 0x07C4ACDDU) >> 27];
return r;
# endif
}