r600/fmax: Flush denormals before calling builtin.
Same reason as amdgcn.
Fixes fmax, maxmag CTS on turks.
Reviewer: Tom Stellard <tstellar@redhat.com>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 334227
GitOrigin-RevId: e23c0ec0863870bc4823c731091f478c4bc781cf
diff --git a/r600/lib/SOURCES b/r600/lib/SOURCES
index 284052c..132b151 100644
--- a/r600/lib/SOURCES
+++ b/r600/lib/SOURCES
@@ -1,3 +1,4 @@
+math/fmax.cl
synchronization/barrier_impl.ll
workitem/get_global_offset.cl
workitem/get_group_id.cl
diff --git a/r600/lib/math/fmax.cl b/r600/lib/math/fmax.cl
new file mode 100644
index 0000000..e4b9e4c
--- /dev/null
+++ b/r600/lib/math/fmax.cl
@@ -0,0 +1,29 @@
+#include <clc/clc.h>
+
+#include "../../../generic/lib/clcmacro.h"
+#include "../../../generic/lib/math/math.h"
+
+_CLC_DEF _CLC_OVERLOAD float fmax(float x, float y)
+{
+ /* Flush denormals if not enabled. Otherwise fmax instruction flushes
+ * the values for comparison, but outputs original denormal */
+ x = __clc_flush_denormal_if_not_supported(x);
+ y = __clc_flush_denormal_if_not_supported(y);
+ return __builtin_fmaxf(x, y);
+}
+_CLC_BINARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, fmax, float, float)
+
+#ifdef cl_khr_fp64
+
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+
+_CLC_DEF _CLC_OVERLOAD double fmax(double x, double y)
+{
+ return __builtin_fmax(x, y);
+}
+_CLC_BINARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, fmax, double, double)
+
+#endif
+
+#define __CLC_BODY <../../../generic/lib/math/fmax.inc>
+#include <clc/math/gentype.inc>
