Using exp2(x * M_LOG2E_F) does not give us accurate enough results for
OpenCL. If you look at the new exp implementation you'll see that
it does multiply the input by M_LOG2E_F, but it still uses the original
input in part of the calculation.
This exp implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.
llvm-svn: 237229
Not all targets support the intrinsic, so it's better to have a
generic implementation which does not use it.
This exp2 implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.
llvm-svn: 237228
This implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.
v2:
- Remove f suffix from constant in double implementations.
- Consolidate implementations using the .cl/.inc approach.
v3:
- Use __CLC_FPSIZE instead of __CLC_FP{32,64}
v4 (Jan Vesely):
- Limit to single precision.
llvm-svn: 236920
This is a generic implementation which just calls rsqrt.
Targets should override this if they want a faster implementation.
v2:
- Alphabettize SOURCES
v3 (Jan Vesely):
Limit to single precision types.
llvm-svn: 236915
Ported from AMD builtin library, passes piglit on Turks.
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 236647
The new implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.
llvm-svn: 236608
This makes it possible for runtime implementations to disable
subnormal handling at runtime.
When this flag is enabled, decisions about how to handle subnormals
in the library will be controlled by an external variable called
__CLC_SUBNORMAL_DISABLE.
Function implementations should use these new helpers for querying subnormal
support:
__clc_fp16_subnormals_supported();
__clc_fp32_subnormals_supported();
__clc_fp64_subnormals_supported();
In order for the library to link correctly with this feature,
users will be required to either:
1. Insert this variable into the module (if using the LLVM/Clang C++/C APIs).
2. Pass either subnormal_disable.bc or subnormal_use_default.bc to the
linker. These files are distributed with liblclc and installed to
$(installdir). e.g.:
llvm-link -o kernel-out.bc kernel.bc builtins-nosubnormal.bc subnormal_disable.bc
or
llvm-link -o kernel-out.bc kernel.bc builtins-nosubnormal.bc subnormal_use_default.bc
If you do not supply the --enable-runtime-subnormal then the library
behaves the same as it did before this commit.
In addition to these changes, the patch adds helper functions that
should be used when implementing library functions that need
special handling for denormals:
__clc_fp16_subnormals_supported();
__clc_fp32_subnormals_supported();
__clc_fp64_subnormals_supported();
llvm-svn: 235329
This is a generic implementation which just calls sqrt. Targets should
override this if they want a faster implementation.
v2:
- Alphabetize SOURCES
llvm-svn: 232965
This implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.
v2:
- Remove unnecessary copyright.
llvm-svn: 232964
We need to reinterpret float/double types as uint/ulong in order to
perform the bitwise operations.
This has been tested with piglit, OpenCV, and the ocl conformance tests.
v2:
- Use vector operations rather than splitting vectors into scalar
components.
Reviewed-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 231373
It has been part of the common functions since 1.0
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 231137
Ported from the libclc/amd-builtins branch
v2: Rename sincos_f_piby4 to __libclc__sincosf_piby4
Add cospi(double) implementation instead of using llvm.cos
Notes:
The sincosD_piby4.h file is mostly the same as the builtin implementation
released by AMD. The inline attribute declaration is changed, and M_PI is
used instead of a constant double. Otherwise, the only difference is that
the header explicitly enables the fp64 pragma.
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Jeroen Ketema <j.ketema@imperial.ac.uk>
CC: Tom Stellard <tom@stellard.net>
CC: Matt Arsenault <Matthew.Arsenault@amd.com>
llvm-svn: 230641
Some functions are implemented using hand-written LLVM IR, and
LLVM assembly format is allowed to change between versions, so we
should require a specific version of LLVM.
llvm-svn: 225041
Including a standard or system header isn't allowed in OpenCL.
The type "size_t" needs to be explicitely defined now.
v2: Use __SIZE_TYPE__ instead of unsigned int.
v3: Define ptrdiff_t and NULL.
Patch-by: Jean-Sébastien Pédron
Reviewed-by: Jeroen Ketema
Reviewed-by: Jan Vesely
llvm-svn: 222235
v2: Fix function declaration
Add range metadata to r600 implementation
v3: change prefix to AMDGPU
Reviewed-by: Tom Stellard <tom@stellard.net>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 219793
This is a simple implementation which just copies data synchronously.
v2:
- Use size_t.
v3:
- Fix possible race condition by splitting the copy among multiple
work items.
llvm-svn: 219008
We were missing the local versions of the atom_* before
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 217911
Uses the algorithm:
tan(x) = sin(x) / sqrt(1-sin^2(x))
An alternative is:
tan(x) = sin(x) / cos(x)
Which produces more verbose bitcode and longer assembly.
Either way, the generated bitcode seems pretty nasty and a more optimized
but still precise-enough solution is welcome.
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 217511
Passes the tests that were submitted to the piglit list
Tested on R600 (Pitcairn)
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 217509
This was previously implemented with a macro and we were using
__builtin_copysign(), which takes double inputs for the float
version of copysign().
Reviewed-and-Tested-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 217045
v2: use space instead of '=' to make Mac happy
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Jeroen Ketema <j.ketema@imperial.ac.uk>
llvm-svn: 216922
These were missing and caused mad24/mul24 with int3/uint3 arg type to fail
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 216321
This generates bitcode which is indistinguishable from what was
hand-written for int32 types in v[load|store]_impl.ll.
v4: Use vec2+scalar for vec3 load/stores to prevent corruption (per Tom)
v3: Also remove unused generic/lib/shared/v[load|store]_impl.ll
v2: (Per Matt Arsenault) Fix alignment issues with vector load stores
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
CC: Matt Arsenault <Matthew.Arsenault@amd.com>
CC: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 216069
Tom Stellard