v2: prefer intrinsics only on Linux to avoid compilation problems on
other
platforms [1].
Is posible that other OS could also benefit from intrinsic.
We need this patch, because Gallium Nine use directly intrinsics.
Otherwise build fails.
[1] https://bugs.freedesktop.org/show_bug.cgi?id=30514
Cc: Tom Fogal <tfo...@alumni.unh.edu>
Cc: Vinson Lee <v...@freedesktop.org>
Signed-off-by: David Heidelberger <david.heidelber...@ixit.cz>
---
src/gallium/auxiliary/util/u_atomic.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/gallium/auxiliary/util/u_atomic.h
b/src/gallium/auxiliary/util/u_atomic.h
index 68369a1..6271736 100644
--- a/src/gallium/auxiliary/util/u_atomic.h
+++ b/src/gallium/auxiliary/util/u_atomic.h
@@ -24,6 +24,9 @@
#define PIPE_ATOMIC_MSVC_INTRINSIC
#elif (defined(PIPE_CC_MSVC) && defined(PIPE_ARCH_X86))
#define PIPE_ATOMIC_ASM_MSVC_X86
+#elif defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 401) && \
+ defined(PIPE_OS_LINUX)
+#define PIPE_ATOMIC_GCC_INTRINSIC
#elif (defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86))
#define PIPE_ATOMIC_ASM_GCC_X86
#elif (defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86_64))
--
2.1.2
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