Author: awatry Date: Thu May 5 22:34:45 2016 New Revision: 268708 URL: http://llvm.org/viewvc/llvm-project?rev=268708&view=rev Log: math: Add fdim implementation
Based on the amd-builtin, but explicitly vectorized for all sizes (not just float4), and includes a vectorized double implementation. Passes piglit (float) tests on pitcairn. Signed-off-by: Aaron Watry <awa...@gmail.com> Reviewed-by: Jan Vesely <jan.ves...@rutgers.edu> Added: libclc/trunk/generic/include/clc/math/fdim.h libclc/trunk/generic/include/clc/math/fdim.inc libclc/trunk/generic/lib/math/fdim.cl libclc/trunk/generic/lib/math/fdim.inc Modified: libclc/trunk/generic/include/clc/clc.h libclc/trunk/generic/lib/SOURCES Modified: libclc/trunk/generic/include/clc/clc.h URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/clc.h?rev=268708&r1=268707&r2=268708&view=diff ============================================================================== --- libclc/trunk/generic/include/clc/clc.h (original) +++ libclc/trunk/generic/include/clc/clc.h Thu May 5 22:34:45 2016 @@ -52,6 +52,7 @@ #include <clc/math/exp10.h> #include <clc/math/exp2.h> #include <clc/math/fabs.h> +#include <clc/math/fdim.h> #include <clc/math/floor.h> #include <clc/math/fma.h> #include <clc/math/fmax.h> Added: libclc/trunk/generic/include/clc/math/fdim.h URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/math/fdim.h?rev=268708&view=auto ============================================================================== --- libclc/trunk/generic/include/clc/math/fdim.h (added) +++ libclc/trunk/generic/include/clc/math/fdim.h Thu May 5 22:34:45 2016 @@ -0,0 +1,2 @@ +#define __CLC_BODY <clc/math/fdim.inc> +#include <clc/math/gentype.inc> Added: libclc/trunk/generic/include/clc/math/fdim.inc URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/math/fdim.inc?rev=268708&view=auto ============================================================================== --- libclc/trunk/generic/include/clc/math/fdim.inc (added) +++ libclc/trunk/generic/include/clc/math/fdim.inc Thu May 5 22:34:45 2016 @@ -0,0 +1 @@ +_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE fdim(__CLC_GENTYPE a, __CLC_GENTYPE b); Modified: libclc/trunk/generic/lib/SOURCES URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/SOURCES?rev=268708&r1=268707&r2=268708&view=diff ============================================================================== --- libclc/trunk/generic/lib/SOURCES (original) +++ libclc/trunk/generic/lib/SOURCES Thu May 5 22:34:45 2016 @@ -82,6 +82,7 @@ math/exp.cl math/exp_helper.cl math/exp2.cl math/exp10.cl +math/fdim.cl math/fmax.cl math/fmin.cl math/fmod.cl Added: libclc/trunk/generic/lib/math/fdim.cl URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/math/fdim.cl?rev=268708&view=auto ============================================================================== --- libclc/trunk/generic/lib/math/fdim.cl (added) +++ libclc/trunk/generic/lib/math/fdim.cl Thu May 5 22:34:45 2016 @@ -0,0 +1,10 @@ +#include <clc/clc.h> + +#include "math.h" + +#ifdef cl_khr_fp64 +#pragma OPENCL EXTENSION cl_khr_fp64 : enable +#endif + +#define __CLC_BODY <fdim.inc> +#include <clc/math/gentype.inc> Added: libclc/trunk/generic/lib/math/fdim.inc URL: http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/math/fdim.inc?rev=268708&view=auto ============================================================================== --- libclc/trunk/generic/lib/math/fdim.inc (added) +++ libclc/trunk/generic/lib/math/fdim.inc Thu May 5 22:34:45 2016 @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2014 Advanced Micro Devices, Inc. + * Copyright (c) 2016 Aaron Watry + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#if __CLC_FPSIZE == 32 +#ifdef __CLC_SCALAR +_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE fdim(__CLC_GENTYPE x, __CLC_GENTYPE y) { + if (__builtin_isnan(x) || __builtin_isnan(y)) + return as_float(QNANBITPATT_SP32); + return __builtin_fmax(x - y, 0); +} +#define __CLC_FDIM_VEC(width) \ +_CLC_OVERLOAD _CLC_DEF float##width fdim(float##width x, float##width y) { \ + /* Determine if x or y is NaN. */ \ + /* Vector true is -1, i.e. all-bits-set, and NaN==NaN is false. */ \ + /* If either is NaN, then ~((x==x) & (y==y)) will be 0 (e.g. ~(-1)), as will n. */ \ + int##width n = ~((x == x) & (y == y)) & QNANBITPATT_SP32; \ + /* Calculate x-y if x>y, otherwise positive 0, again taking */ \ + /* advantage of vector true being all-bits-set. */ \ + int##width r = (x > y) & as_int##width(x - y); \ + return as_float##width(n | r); \ +} +__CLC_FDIM_VEC(2) +__CLC_FDIM_VEC(3) +__CLC_FDIM_VEC(4) +__CLC_FDIM_VEC(8) +__CLC_FDIM_VEC(16) +#undef __CLC_FDIM_VEC +#endif +#endif + +#if __CLC_FPSIZE == 64 +#ifdef __CLC_SCALAR +_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE fdim(__CLC_GENTYPE x, private __CLC_GENTYPE y) { + long n = -(isnan(x) | isnan(y)) & QNANBITPATT_DP64; + long r = -(x > y) & as_long(x - y); + return as_double(n | r); +} +#define __CLC_FDIM_VEC(width) \ +_CLC_OVERLOAD _CLC_DEF double##width fdim(double##width x, double##width y) { \ + /* See comment in float implementation for explanation. */ \ + long##width n = ~((x == x) & (y == y)) & QNANBITPATT_DP64; \ + long##width r = (x > y) & as_long##width(x - y); \ + return as_double##width(n | r); \ +} +__CLC_FDIM_VEC(2) +__CLC_FDIM_VEC(3) +__CLC_FDIM_VEC(4) +__CLC_FDIM_VEC(8) +__CLC_FDIM_VEC(16) +#undef __CLC_FDIM_VEC +#endif +#endif _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits