diff options
| author | Matt Turner <[email protected]> | 2015-02-02 17:26:49 -0800 |
|---|---|---|
| committer | Emil Velikov <[email protected]> | 2015-02-04 01:37:20 +0000 |
| commit | 9d1d1f46c7952da26aaafa4ecf646fcd2c4645c4 (patch) | |
| tree | 7270463d363509d69d01ba62c2eb9db5341bc96e | |
| parent | b51d36969071d1baba09a65640312155634962cd (diff) | |
gallium/util: Don't use __builtin_clrsb in util_last_bit().
Unclear circumstances lead to undefined symbols on x86.
Bugzilla: https://bugs.gentoo.org/show_bug.cgi?id=536916
Cc: [email protected]
Reviewed-by: Ilia Mirkin <[email protected]>
(cherry picked from commit 32e98e8ef06f0bb6ad55f9fb5858be77c03367b0)
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index 0113fb1a0c6..8f63c008b5b 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -561,14 +561,10 @@ util_last_bit(unsigned u) static INLINE unsigned util_last_bit_signed(int i) { -#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 407) && !defined(__INTEL_COMPILER) - return 31 - __builtin_clrsb(i); -#else if (i >= 0) return util_last_bit(i); else return util_last_bit(~(unsigned)i); -#endif } /* Destructively loop over all of the bits in a mask as in: |