Author: jvesely
Date: Tue Feb 6 10:44:43 2018
New Revision: 324373
URL: http://llvm.org/viewvc/llvm-project?rev=324373&view=rev
Log:
Add vstore_half_rtz implementation
Passes CTS on carrizo
Reviewer: Jeroen Ketema <j.ket...@xs4all.nl>
Signed-off-by: Jan Vesely <jan.ves...@rutgers.edu>
Modified:
libclc/trunk/generic/include/clc/shared/vstore.h
libclc/trunk/generic/lib/shared/vstore.cl
Modified: libclc/trunk/generic/include/clc/shared/vstore.h
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/shared/vstore.h?rev=324373&r1=324372&r2=324373&view=diff
==============================================================================
--- libclc/trunk/generic/include/clc/shared/vstore.h (original)
+++ libclc/trunk/generic/include/clc/shared/vstore.h Tue Feb 6 10:44:43 2018
@@ -37,10 +37,12 @@ _CLC_VECTOR_VSTORE_PRIM1(ulong)
_CLC_VECTOR_VSTORE_PRIM1(float)
_CLC_VECTOR_VSTORE_HALF_PRIM1(float,)
+_CLC_VECTOR_VSTORE_HALF_PRIM1(float, _rtz)
#ifdef cl_khr_fp64
_CLC_VECTOR_VSTORE_PRIM1(double)
_CLC_VECTOR_VSTORE_HALF_PRIM1(double,)
+ _CLC_VECTOR_VSTORE_HALF_PRIM1(double, _rtz)
#endif
#ifdef cl_khr_fp16
Modified: libclc/trunk/generic/lib/shared/vstore.cl
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/shared/vstore.cl?rev=324373&r1=324372&r2=324373&view=diff
==============================================================================
--- libclc/trunk/generic/lib/shared/vstore.cl (original)
+++ libclc/trunk/generic/lib/shared/vstore.cl Tue Feb 6 10:44:43 2018
@@ -108,15 +108,48 @@ _CLC_DEF _CLC_OVERLOAD float __clc_noop(
{
return x;
}
+_CLC_DEF _CLC_OVERLOAD float __clc_rtz(float x)
+{
+ /* Remove lower 13 bits to make sure the number is rounded down */
+ int mask = 0xffffe000;
+ const int exp = (as_uint(x) >> 23 & 0xff) - 127;
+ /* Denormals cannot be flushed, and they use different bit for rounding
*/
+ if (exp < -14)
+ mask <<= min(-(exp + 14), 10);
+ /* RTZ does not produce Inf for large numbers */
+ if (fabs(x) > 65504.0f && !isinf(x))
+ return copysign(65504.0f, x);
+ /* Handle nan corner case */
+ if (isnan(x))
+ return x;
+ return as_float(as_uint(x) & mask);
+}
#ifdef cl_khr_fp64
_CLC_DEF _CLC_OVERLOAD double __clc_noop(double x)
{
return x;
}
+_CLC_DEF _CLC_OVERLOAD double __clc_rtz(double x)
+{
+ /* Remove lower 42 bits to make sure the number is rounded down */
+ ulong mask = 0xfffffc0000000000UL;
+ const int exp = (as_ulong(x) >> 52 & 0x7ff) - 1023;
+ /* Denormals cannot be flushed, and they use different bit for rounding
*/
+ if (exp < -14)
+ mask <<= min(-(exp + 14), 10);
+ /* RTZ does not produce Inf for large numbers */
+ if (fabs(x) > 65504.0 && !isinf(x))
+ return copysign(65504.0, x);
+ /* Handle nan corner case */
+ if (isnan(x))
+ return x;
+ return as_double(as_ulong(x) & mask);
+}
#endif
#define __XFUNC(SUFFIX, VEC_SIZE, OFFSET, TYPE, STYPE, AS) \
- __FUNC(SUFFIX, VEC_SIZE, OFFSET, TYPE, STYPE, AS, __clc_noop)
+ __FUNC(SUFFIX, VEC_SIZE, OFFSET, TYPE, STYPE, AS, __clc_noop) \
+ __FUNC(SUFFIX ## _rtz, VEC_SIZE, OFFSET, TYPE, STYPE, AS, __clc_rtz)
#define FUNC(SUFFIX, VEC_SIZE, OFFSET, TYPE, STYPE, AS) \
__XFUNC(SUFFIX, VEC_SIZE, OFFSET, TYPE, STYPE, AS)
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