Displaying 6 results from an estimated 6 matches for "nomask".
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nmask
2019 Jun 10
2
[RFC] Expose user provided vector function for auto-vectorization.
...ky processing` you are referring to that the vectorizer should care about?
For the case mentioned earlier:
float MyAdd(float* a, int b) { return *a + b; }
__declspec(vector_variant(implements(MyAdd(float *a, int b)),
linear(a), vectorlength(8),
nomask, processor(core_2nd_gen_avx)))
__m256 __regcall MyAddVec(float* v_a, __m128i v_b1, __m128i v_b2)
If FE emitted
;; Alwaysinline
define <8 x float> @MyAddVec.abi_wrapper(float* %v_a, <8 x i32> %v_b) {
;; Not sure about the exact values in the mask parameter.
%v_b1 = shufflevector &...
2019 Jun 10
2
[RFC] Expose user provided vector function for auto-vectorization.
...//software.intel.com/en-us/cpp-compiler-developer-guide-and-reference-vector-variant:
>
> float MyAdd(float* a, int b) { return *a + b; }
> __declspec(vector_variant(implements(MyAdd(float *a, int b)),
> linear(a), vectorlength(8),
> nomask, processor(core_2nd_gen_avx)))
> __m256 __regcall MyAddVec(float* v_a, __m128i v_b1, __m128i v_b2)
>
> We need somehow communicate which lanes of widened "b" would map for the b1 parameter and which would go to the b2. If we only care about single ABI (like the one mandated by th...
2019 Jun 07
2
[RFC] Expose user provided vector function for auto-vectorization.
...ample from https://software.intel.com/en-us/cpp-compiler-developer-guide-and-reference-vector-variant:
float MyAdd(float* a, int b) { return *a + b; }
__declspec(vector_variant(implements(MyAdd(float *a, int b)),
linear(a), vectorlength(8),
nomask, processor(core_2nd_gen_avx)))
__m256 __regcall MyAddVec(float* v_a, __m128i v_b1, __m128i v_b2)
We need somehow communicate which lanes of widened "b" would map for the b1 parameter and which would go to the b2. If we only care about single ABI (like the one mandated by the OMP) than su...
2016 Mar 02
2
Proposal for function vectorization and loop vectorization with function calls
...ch vector-width to use? If the dowork function and its caller are in different modules, how does compiler communicate what vector width are needed?
Yes, you are right in general, that is defined by VectorABI used by GCC and ICC. E.g. GCC generation 7 versions by default for x86 (scalar, SSE(mask, nomask), AVX(mask, nomask), AVX2 (mask, nomask). There are several options we can optimize to reduce the # of version we need to generate w.r.t compile-time and code-size. We can provide detailed info.
>>>>> Loop Vectorizer already supports math functions and math functions libraries. You...
2008 Nov 23
1
[Bug 18669] New: copyPixels fails if alphaBitmap/ alphaPoint arguments are null
...Pixels(src, rect, pt, null, null, merge_alpha);
Currently, however, swfdec implements it as a noop.
A branch which extends the copyPixels test to catch this bug, and additionally
fixes it, is available from this repository:
git://github.com/mental/swfdec.git
The branch name is copyPixels-alpha-nomask
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2016 Mar 02
4
Proposal for function vectorization and loop vectorization with function calls
Proposal for function vectorization and loop vectorization with function calls
==============================================================================
Intel Corporation (3/2/2016)
This is a proposal for an initial work towards Clang and LLVM implementation of
vectorizing a function annotated with OpenMP 4.5's "#pragma omp declare simd"
(named SIMD-enabled function) and its