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Improve support for IAR compiler with attributes and intrinsics

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This commit is contained in:
Joseph Chen
2024-05-14 17:01:19 +08:00
parent 78955f5f9d
commit 2955d92ac0
5 changed files with 25 additions and 5 deletions
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lib/common/bits.h
+8
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@@ -43,6 +43,8 @@ MEM_STATIC unsigned ZSTD_countTrailingZeros32(U32 val)
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4)
return (unsigned)__builtin_ctz(val);
# elif defined(__ICCARM__)
return (unsigned)__builtin_ctz(val);
# else
return ZSTD_countTrailingZeros32_fallback(val);
# endif
@@ -82,6 +84,8 @@ MEM_STATIC unsigned ZSTD_countLeadingZeros32(U32 val)
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4)
return (unsigned)__builtin_clz(val);
# elif defined(__ICCARM__)
return (unsigned)__builtin_clz(val);
# else
return ZSTD_countLeadingZeros32_fallback(val);
# endif
@@ -105,6 +109,8 @@ MEM_STATIC unsigned ZSTD_countTrailingZeros64(U64 val)
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4) && defined(__LP64__)
return (unsigned)__builtin_ctzll(val);
# elif defined(__ICCARM__)
return (unsigned)__builtin_ctzll(val);
# else
{
U32 mostSignificantWord = (U32)(val >> 32);
@@ -136,6 +142,8 @@ MEM_STATIC unsigned ZSTD_countLeadingZeros64(U64 val)
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4)
return (unsigned)(__builtin_clzll(val));
# elif defined(__ICCARM__)
return (unsigned)(__builtin_clzll(val));
# else
{
U32 mostSignificantWord = (U32)(val >> 32);