[libclc] r334228 - r600/fmin: Flush denormals before calling builtin.

[Jan Vesely via cfe-commits]

Author: jvesely
Date: Thu Jun  7 13:27:58 2018
New Revision: 334228

URL: http://llvm.org/viewvc/llvm-project?rev=334228&view=rev
Log:
r600/fmin: Flush denormals before calling builtin.

Same reason as amdgcn.
Fixes fmin, minmag CTS on turks.
Reviewer: Tom Stellard <tstellar at redhat.com>
Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>

Added:
    libclc/trunk/r600/lib/math/fmin.cl
Modified:
    libclc/trunk/r600/lib/SOURCES

Modified: libclc/trunk/r600/lib/SOURCES
URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/r600/lib/SOURCES?rev=334228&r1=334227&r2=334228&view=diff
==============================================================================
--- libclc/trunk/r600/lib/SOURCES (original)
+++ libclc/trunk/r600/lib/SOURCES Thu Jun  7 13:27:58 2018
@@ -1,4 +1,5 @@
 math/fmax.cl
+math/fmin.cl
 synchronization/barrier_impl.ll
 workitem/get_global_offset.cl
 workitem/get_group_id.cl

Added: libclc/trunk/r600/lib/math/fmin.cl
URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/r600/lib/math/fmin.cl?rev=334228&view=auto
==============================================================================
--- libclc/trunk/r600/lib/math/fmin.cl (added)
+++ libclc/trunk/r600/lib/math/fmin.cl Thu Jun  7 13:27:58 2018
@@ -0,0 +1,30 @@
+#include <clc/clc.h>
+
+#include "../../../generic/lib/clcmacro.h"
+#include "../../../generic/lib/math/math.h"
+
+_CLC_DEF _CLC_OVERLOAD float fmin(float x, float y)
+{
+   /* fcanonicalize removes sNaNs and flushes denormals if not enabled.
+    * Otherwise fmin 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_fminf(x, y);
+}
+_CLC_BINARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, fmin, float, float)
+
+#ifdef cl_khr_fp64
+
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+
+_CLC_DEF _CLC_OVERLOAD double fmin(double x, double y)
+{
+   return __builtin_fmin(x, y);
+}
+_CLC_BINARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, fmin, double, double)
+
+#endif
+
+#define __CLC_BODY <../../../generic/lib/math/fmin.inc>
+#include <clc/math/gentype.inc>