search for: float32x4_t

...ts, $ 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 fadd v0....

...p16fml -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...

...r the interleaved cases (vld[234].*). It seems the vld1.* and vst1.* do have those direct IR representations though. It’s great news if this is fixed in the current tip, but in the short term (for app store builds using the official toolchain) are there any LLVM-specific extensions to initialise a float32x4_t that will get lowered to the "load <4 x float>* %1” form? Or is that more a question for the clang folks? Simon

Hi, Optimizes celt_pitch_xcorr for ARM NEON floating point. Changes from RFCv3: - celt_neon_intr.c - removed warnings due to not having constant pointers - Put simpler loop to take care of corner cases. Unrolling using intrinsics was not really mapping well to what was done in celt_pitch_xcorr_arm.s - Makefile.am Removed explicit -O3 optimization - test_unit_mathops.c,

...ulq_f32(a, t); \ + tv = vtrnq_f32(m, t); \ + m = vaddq_f32(tv.val[0], tv.val[1]); \ + }while(0) + +#define ONES_MINUS_ONE 0xbf8000003f800000 //{-1.0, 1.0} +#define MINUS_ONE 0xbf800000bf800000 // {-1.0, -1.0} + +static void kf_bfly4_neon_m1(kiss_fft_cpx *Fout, int N) { + float32x4_t Fout_4[2]; + float32x2_t Fout_2[4]; + float32x2_t scratch_2[2]; + float32x2_t ones_2 = vcreate_f32(ONES_MINUS_ONE); + float32x2_t minusones_2 = vcreate_f32(MINUS_ONE); + float *ai = (float *)Fout; + float *bi = (float *)Fout; + int i; + + /* Consume/update 4 complex Fout values per cycle + * just...

...lude "../arch.h" + +/* + * Function: xcorr_kernel_neon_float + * --------------------------------- + * Computes 4 correlation values and stores them in sum[4] + */ +static void xcorr_kernel_neon_float(const float *x, const float *y, + float sum[4], int len) { + float32x4_t YY[3]; + float32x4_t YEXT[3]; + float32x4_t XX[2]; + float32x2_t XX_2; + float32x4_t SUMM; + const float *xi = x; + const float *yi = y; + + celt_assert(len>0); + + YY[0] = vld1q_f32(yi); + SUMM = vdupq_n_f32(0); + + /* Consume 8 elements in x vector and 12 elements in y +...

Hi, Optimizes celt_pitch_xcorr for floating point. Changes from RFCv1: - Rebased on top of commit aad281878: Fix celt_pitch_xcorr_c signature. which got rid of ugly code around CELT_PITCH_XCORR_IMPL passing of "arch" parameter. - Unified with --enable-intrinsics used by x86 - Modified algorithm to be more in-line with algorithm in celt_pitch_xcorr_arm.s Viswanath Puttagunta

...lude "../arch.h" + +/* + * Function: xcorr_kernel_neon_float + * --------------------------------- + * Computes 4 correlation values and stores them in sum[4] + */ +static void xcorr_kernel_neon_float(const float *x, const float *y, + float sum[4], int len) { + float32x4_t YY[3]; + float32x4_t YEXT[3]; + float32x4_t XX[2]; + float32x2_t XX_2; + float32x4_t SUMM; + float *xi = x; + float *yi = y; + + celt_assert(len>0); + + YY[0] = vld1q_f32(yi); + SUMM = vdupq_n_f32(0); + + /* Consume 8 elements in x vector and 12 elements in y + * vector. H...

Hi, Optimizes celt_pitch_xcorr for floating point. Changes from RFCv2: - Changes recommended by Timothy for celt_neon_intr.c everything except, left the unrolled loop still unrolled - configure.ac - use AC_LINK_IFELSE instead of AC_COMPILE_IFELSE - Moved compile flags into Makefile.am - OPUS_ARM_NEON_INR --> typo --> OPUS_ARM_NEON_INTR Viswanath Puttagunta (1): armv7:

...{ I had to think quite a bit about what "3to1" meant (since it is describing the context of the caller, not what the actual function does). I'd follow the naming convention in the existing celt_pitch_xcorr_arm.s, and use "process1", personally. > + int i; > + float32x4_t XX[4]; > + float32x4_t YY[4]; > + float32x4_t SUMM; > + float32x2_t ZERO; > + float32x2x2_t tv; > + float sumi; > + float *xi = x; > + float *yi = y; > + > + ZERO = vdup_n_f32(0); > + SUMM = vdupq_n_f32(0); > + > + /* Work on 16 values per cyc...

...t; + * Function: xcorr_kernel_neon_float > + * --------------------------------- > + * Computes 4 correlation values and stores them in sum[4] > + */ > +static void xcorr_kernel_neon_float(const float *x, const float *y, > + float sum[4], int len) { > + float32x4_t YY[3]; > + float32x4_t YEXT[3]; > + float32x4_t XX[2]; > + float32x2_t XX_2; > + float32x4_t SUMM; > + const float *xi = x; > + const float *yi = y; > + > + celt_assert(len>0); > + > + YY[0] = vld1q_f32(yi); > + SUMM = vdupq_n_f32(0); > + &gt...

----- Original Message ----- > From: "Renato Golin" <renato.golin at linaro.org> > To: "Hal Finkel" <hfinkel at anl.gov> > Cc: "James Molloy" <James.Molloy at arm.com>, "Nadav Rotem" <nrotem at apple.com>, "Arnold Schwaighofer" > <aschwaighofer at apple.com>, "LLVM Dev" <llvm-dev at

...; +#include "../arch.h" + +/* + * Function: xcorr_kernel_neon_float + * --------------------------------- + * Computes 4 correlation values and stores them in sum[4] + */ +void xcorr_kernel_neon_float(const float *x, const float *y, + float sum[4], int len) { + float32x4_t YY[3]; + float32x4_t YEXT[3]; + float32x4_t XX[2]; + float32x2_t XX_2; + float32x4_t SUMM; + float *xi = x; + float *yi = y; + + celt_assert(len>0); + + YY[0] = vld1q_f32(yi); + SUMM = vdupq_n_f32(0); + + /* Consume 8 elements in x vector and 12 elements in y + * vector. H...

Hello, This patch introduces ARM NEON Intrinsics to optimize kf_bfly4 routine in celt part of libopus. Using NEON optimized kf_bfly4(_neon) routine helped improve performance of opus_fft_impl function by about 21.4%. The end use case was decoding a music opus ogg file. The end use case saw performance improvement of about 4.47%. This patch has 2 components i. Actual neon code to improve

From: Viswanath Puttagunta <viswanath.puttagunta at linaro.org> Hi, Optimizes celt_pitch_xcorr for floating point. Changes from RFCv1: - Rebased on top of commit aad281878: Fix celt_pitch_xcorr_c signature. which got rid of ugly code around CELT_PITCH_XCORR_IMPL passing of "arch" parameter. - Unified with --enable-intrinsics used by x86 - Modified algorithm to be more

Should call celt_inner_prod(). --- celt/bands.c | 7 ++++--- celt/bands.h | 2 +- celt/celt_encoder.c | 6 +++--- celt/pitch.c | 2 +- src/opus_multistream_encoder.c | 2 +- 5 files changed, 10 insertions(+), 9 deletions(-) diff --git a/celt/bands.c b/celt/bands.c index bbe8a4c..1ab24aa 100644 --- a/celt/bands.c +++ b/celt/bands.c

...so, you're probably having problems cross-compiling. Renato's > recently worked on some documentation in this area: > http://clang.llvm.org/docs/CrossCompilation.html. > > But for a quick hack, you could try: > > $ 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 > > ("ffreestanding" will dodge any issues with your supporting toolchain, > but won't work...

...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 help. Cheers, - Stan...

.../* Neon */ Please do not use tabs in source code (this applies here and everywhere below). Even with the tabs expanded in context, the comments here do not line up properly. > +static void xcorr_kernel_neon_float(float *x, float *y, float sum[4], int len) { x and y should be const. > + float32x4_t YY[5]; > + float32x4_t XX[4]; > + float32x2_t XX_2; > + float32x4_t SUMM[4]; > + float *xi = x; > + float *yi = y; > + int cd = len/4; > + int cr = len%4; len is signed, so / and % are NOT equivalent to the corresponding >> and & (they are much slower). > + int...

Hello LLVM Devs, I am starting my PhD on Automatic Parallelization for DSP and want to play with some ARM NEON intrinsics for a start. I spent the last three days trying to compile a version of LLVM that would allow me to compile sources that contain these intrinsics, but with no success. In the process I found out that clang doesn't support NEON (as per