search for: arm_neon

...i=hard -mthumb -I"C:\Program Files\CodeSourcery\Sourcery_CodeBench_for_ARM_EABI\arm-none-eabi\include" -ferror-limit=1000 and the followings are error codes. Thanks and regards, Seung-yeon. In file included from helloneon.c:4: d:/llvm_projects/llvm-3.0rc4/bin/../lib/clang/3.0/include\arm_neon.h:41:24: error: invalid vector element type 'int32_t' (aka 'long') typedef __attribute__((neon_vector_type(2))) int32_t int32x2_t; ^ d:/llvm_projects/llvm-3.0rc4/bin/../lib/clang/3.0/include\arm_neon.h:42:24: error: invalid vector element type 'int32_t...

...ter types assigning to 'const long *' from 'long long *' [-Wincompatible-pointer-types]     corr_QC_s64x2[ 0 ] = vld1q_s64( corr_QC + offset + 0 );                                     ^~~~~~~~~~~~~~~~~~~~ /Users/andrewl/android/toolchain-r16b-arm64-v8a/lib64/clang/5.0.300080/include/arm_neon.h:7628:46: note: expanded from macro 'vld1q_s64'   __ret = (int64x2_t) __builtin_neon_vld1q_v(__p0, 35); \                                              ^~~~ silk/fixed/arm/warped_autocorrelation_FIX_neon_intr.c:44:37: warning: incompatible pointer types assigning to 'const long *' f...

...ising the 64-bit and 128-bit NEON machine types. The AAPCS defines how to pass containerized vectors and it defines how the NEON user types map on to them. Also it defines how to mangle the NEON user types. So it defines how to use NEON user types in a public binary interface. It also says that arm_neon.h "defines a set of internal structures that describe the short vector types" which I guess could be read as saying they are packed inside structures - but I don't think this is the intention and it doesn't match implementations. The arm_neon.h implementation in the ARM compiler d...

...grams and outputs, $ clang -O3 -march=armv8.2-a+fp16fml -ffast-math -S -o- vfp32.c test_vfma_lane_f16: // @test_vfma_lane_f16 fmla v2.4s, v1.4s, v0.4s // fp32 is GOOD mov v0.16b, v2.16b ret $ cat vfp32.c #include <arm_neon.h> float32x4_t test_vfma_lane_f16(float32x4_t a, float32x4_t b, float32x4_t c) { c += a * b; return c; } $ clang -O3 -march=armv8.2-a+fp16fml -ffast-math -S -o- vfp16.c test_vfma_lane_f16: // @test_vfma_lane_f16 fmul v0.4h, v1.4h, v0.4h...

...machine types. > > The AAPCS defines how to pass containerized vectors and it defines > how the NEON user types map on to them.  Also it defines how to > mangle the NEON user types.  So it defines how to use NEON user > types in a public binary interface. > > It also says that arm_neon.h "defines a set of internal structures > that describe the short vector types" which I guess could be read > as saying they are packed inside structures - but I don't think this > is the intention and it doesn't match implementations. > The arm_neon.h implementation i...

...ke others static. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk at 205112 91177308-0d34-0410-b5e6-96231b3b80d8 --- Clang commit d57bb79310cadab07ed3b56d0de55318916f2fb0 Author: Tim Northover <tnorthover at apple.com> Date: Sat Mar 29 17:35:34 2014 +0000 Install: add arm_neon.h header back I'd gone too far pruning aarch64_simd.h this time and took out one instance of arm_neon.h. This should restore us to the status quo. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk at 205111 91177308-0d34-0410-b5e6-96231b3b80d8 -K -- Qualcomm Innovat...

...3 -march=armv8.2-a+fp16fml -ffast-math -S -o- vfp32.c > test_vfma_lane_f16: // @test_vfma_lane_f16 > fmla v2.4s, v1.4s, v0.4s // fp32 is GOOD > mov v0.16b, v2.16b > ret > $ cat vfp32.c > #include <arm_neon.h> > float32x4_t test_vfma_lane_f16(float32x4_t a, float32x4_t b, float32x4_t c) { > c += a * b; > return c; > } > > $ clang -O3 -march=armv8.2-a+fp16fml -ffast-math -S -o- vfp16.c > test_vfma_lane_f16: // @test_vfma_lane_f16 > fmul...

...'s default search path priority moved back. In my case, when I busted codesourcery toolchains stdint.h, it's okay to build. And also it was okay cuz clang called /usr/include/stdint.h first on Unbuntu linux. How could I avoid this conflict, not to be removed stdint.h of toolchian? I think arm_neon.h in clang lib folder can handle this. Thanks and regards Seung-yeon. 2011/11/24 James Molloy <james.molloy at arm.com> > Hi,**** > > ** ** > > > additionally, I also specified include dir of arm codesourcery latest > toolchain because of missing stdio.h and stdint....

...which I think is 64-bit. I am much happy to compile the latest code and am successfully doing so. I tried to compile release 2.9, as I (wrongly) believed that I need llvm-gcc in order to compile NEON code on LLVM. Tim's minimalist example worked on my clang3.4: $ cat > neon.c #include <arm_neon.h> float32x4_t my_func(float32x4_t lhs, float32x4_t rhs) { return vaddq_f32(lhs, rhs); } $ clang --target=arm-linux-gnueabihf -mcpu=cortex-a15 -ffreestanding -O3 -S -o - neon.c however it doesn't if I remove the -ffreestanding flag. I need to figure this out next. Thank you for your hel...

Hi, I found some errors in the Clang/LLVM lowering of NEON instructions. There are three types of errors: 1. In Clang's arm_neon.h, the definition of vshl_u8 is wrong. According to ARM's document [1], the shift amount parameter is *always* signed, even for unsigned values, since a negative shift means right shift. I believe the header should be changed to conform to ARM's specification. 2. Compare absolute intrins...

...they did it that way. > > That's ok, but why do you need to do that in the IR? I mean, in the > end, the boilerplate will be optimized away and all that's left will > be the vector instruction, either compiled or JITed. The intrinsics are defined as ordinary C functions in <arm_neon.h>. They use the containerized vector types. So, you've got C code using structures, and at some point we want to remove those structures and expose the underlying vector types. We rely on llvm's SROA optimizations to do that. If you're suggesting that the front-end should optimi...

....adcb969 100644 --- a/configure.ac +++ b/configure.ac @@ -503,6 +503,26 @@ AS_IF([test x"$enable_intrinsics" = x"yes"],[ [rtcd_support="$rtcd_support (NE10)"]) ]) + OPUS_CHECK_INTRINSICS( + [Aarch64 Neon], + [$ARM_NEON_INTR_CFLAGS], + [OPUS_ARM_MAY_HAVE_AARCH64_NEON_INTR], + [OPUS_ARM_PRESUME_AARCH64_NEON_INTR], + [[#include <arm_neon.h> + ]], + [[ + static int32_t IN; + static int16_t OUT; + OUT = vqmovns_s32(I...

On 21 September 2010 18:03, Bob Wilson <bob.wilson at apple.com> wrote: > Because that is what ARM has specified?  They define the vector types that are used with their NEON intrinsics as "containerized vectors".  Perhaps someone on the list from ARM can explain why they did it that way. That's ok, but why do you need to do that in the IR? I mean, in the end, the

libvorbis does not currently have any simd/vectorization. Following patches add generic framework for simd/vectorization and on top, add ARM-NEON simd vectorization using intrinsics. I was able to get over 34% performance improvement on my Beaglebone Black which is single Cortex-A8 based CPU. You can find more information on metrics and procedure I used to measure at

...ved back. > > In my case, when I busted codesourcery toolchains stdint.h, it's okay to > build. > And also it was okay cuz clang called /usr/include/stdint.h first on > Unbuntu linux. > > How could I avoid this conflict, not to be removed stdint.h of toolchian? > I think arm_neon.h in clang lib folder can handle this. > > Thanks and regards > Seung-yeon. > > > > 2011/11/24 James Molloy <james.molloy at arm.com> > >> Hi,**** >> >> ** ** >> >> > additionally, I also specified include dir of arm codesourcery lates...

...'s default search path priority moved back. In my case, when I busted codesourcery toolchains stdint.h, it's okay to build. And also it was okay cuz clang called /usr/include/stdint.h first on Unbuntu linux. How could I avoid this conflict, not to be removed stdint.h of toolchian? I think arm_neon.h in clang lib folder can handle this. Thanks and regards Seung-yeon. 2011/11/24 James Molloy <james.molloy at arm.com<mailto:james.molloy at arm.com>> Hi, > additionally, I also specified include dir of arm codesourcery latest toolchain because of missing stdio.h and stdint.h ....

...ntrinsics as "containerized vectors". Perhaps someone on the list from ARM can explain why they did it that way. The extra structures are irrelevant at the llvm IR level and below. The NEON intrinsics in llvm use plain old vector types. If you're using llvm-gcc, you can define the ARM_NEON_GCC_COMPATIBILITY preprocessor macro, and it will switch to a version of the NEON intrinsics that use plain vector types instead of the containerized vectors. For clang, we are planning to do something similar (without requiring the macro) by overloading the intrinsic functions to take either type...

...Can you clarify what compatibility problems you had with GCC? And that > by using structures in Clang you made it work with armcc? > > Is it just a source code compatibility issue? Yes, there are multiple issues but they all involve source compatibility. Here is an example: #include <arm_neon.h> uint32x2_t test(int32x2_t x) { return vadd_u32(x, x); } This works fine with GCC because int32x2_t and uint32x2_t are built-in vector types and can be implicitly converted. It is not valid if those types are defined as structs, because C/C++ do not allow distinct struct types to be implicit...

...far as the LLVM back-end is concerned, with or without structures, the instruction selection works a treat and generates correct NEON instructions. If the final object has the correct instructions and follows ARM ABIs, there is no point in keeping IR compatibility. I also noticed that Clang's arm_neon.h is completely different from armcc's, another non-compatible choice that has no impact in the final object code generated. As far as I can see, there is no gain in adding the wrapping structures to the vector types. I'll add the intrinsic to the VCEQ.P8 locally and test. If that works,...

Second question: I was checking NEON instructions this week and the vector types seem to be inside structures. If vector types are considered proper types in LLVM, why pack them inside structures? That results in a lot of boilerplate code for converting and copying the values (about 20 lines of IR) just to call a NEON instruction that, in the end, will be converted into three instructions: VLDR