[libclc] r331435 - remquo: Flush denormals if not supported

[Jan Vesely via cfe-commits]

Author: jvesely
Date: Wed May  2 22:44:28 2018
New Revision: 331435

URL: http://llvm.org/viewvc/llvm-project?rev=331435&view=rev
Log:
remquo: Flush denormals if not supported

It's OK to either flush to 0 or return denormal result if the device
does not support denormals. See sec 7.2 and 7.5.3 of OCL specs.
Fixes CTS on carrizo and turks.

Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>
Reviewer: Aaron Watry <awatry at gmail.com>

Modified:
    libclc/trunk/generic/lib/math/clc_remquo.cl

Modified: libclc/trunk/generic/lib/math/clc_remquo.cl
URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/math/clc_remquo.cl?rev=331435&r1=331434&r2=331435&view=diff
==============================================================================
--- libclc/trunk/generic/lib/math/clc_remquo.cl (original)
+++ libclc/trunk/generic/lib/math/clc_remquo.cl Wed May  2 22:44:28 2018
@@ -29,6 +29,8 @@
 
 _CLC_DEF _CLC_OVERLOAD float __clc_remquo(float x, float y, __private int *quo)
 {
+    x = __clc_flush_denormal_if_not_supported(x);
+    y = __clc_flush_denormal_if_not_supported(y);
     int ux = as_int(x);
     int ax = ux & EXSIGNBIT_SP32;
     float xa = as_float(ax);