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extract channel count constants from loops

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These values are constant, but Clang has some trouble noticing that,
especially if the loop body is complex enough. This prevents it from
noticing places where vectorization is possible (and desirable).

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
This commit is contained in:
Steven Noonan
2021-03-15 04:08:34 -07:00
parent 2dcce6d53b
commit c88bb8ccd2
2 changed files with 61 additions and 48 deletions
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miniaudio.h
+55 -44
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@@ -36317,13 +36317,14 @@ MA_API ma_result ma_biquad_reinit(const ma_biquad_config* pConfig, ma_biquad* pB
static MA_INLINE void ma_biquad_process_pcm_frame_f32__direct_form_2_transposed(ma_biquad* pBQ, float* pY, const float* pX)
{
ma_uint32 c;
const ma_uint32 channels = pBQ->channels;
const float b0 = pBQ->b0.f32;
const float b1 = pBQ->b1.f32;
const float b2 = pBQ->b2.f32;
const float a1 = pBQ->a1.f32;
const float a2 = pBQ->a2.f32;
for (c = 0; c < pBQ->channels; c += 1) {
for (c = 0; c < channels; c += 1) {
float r1 = pBQ->r1[c].f32;
float r2 = pBQ->r2[c].f32;
float x = pX[c];
@@ -36347,13 +36348,14 @@ static MA_INLINE void ma_biquad_process_pcm_frame_f32(ma_biquad* pBQ, float* pY,
static MA_INLINE void ma_biquad_process_pcm_frame_s16__direct_form_2_transposed(ma_biquad* pBQ, ma_int16* pY, const ma_int16* pX)
{
ma_uint32 c;
const ma_uint32 channels = pBQ->channels;
const ma_int32 b0 = pBQ->b0.s32;
const ma_int32 b1 = pBQ->b1.s32;
const ma_int32 b2 = pBQ->b2.s32;
const ma_int32 a1 = pBQ->a1.s32;
const ma_int32 a2 = pBQ->a2.s32;
for (c = 0; c < pBQ->channels; c += 1) {
for (c = 0; c < channels; c += 1) {
ma_int32 r1 = pBQ->r1[c].s32;
ma_int32 r2 = pBQ->r2[c].s32;
ma_int32 x = pX[c];
@@ -36517,10 +36519,11 @@ MA_API ma_result ma_lpf1_reinit(const ma_lpf1_config* pConfig, ma_lpf1* pLPF)
static MA_INLINE void ma_lpf1_process_pcm_frame_f32(ma_lpf1* pLPF, float* pY, const float* pX)
{
ma_uint32 c;
const ma_uint32 channels = pLPF->channels;
const float a = pLPF->a.f32;
const float b = 1 - a;
for (c = 0; c < pLPF->channels; c += 1) {
for (c = 0; c < channels; c += 1) {
float r1 = pLPF->r1[c].f32;
float x = pX[c];
float y;
@@ -36535,10 +36538,11 @@ static MA_INLINE void ma_lpf1_process_pcm_frame_f32(ma_lpf1* pLPF, float* pY, co
static MA_INLINE void ma_lpf1_process_pcm_frame_s16(ma_lpf1* pLPF, ma_int16* pY, const ma_int16* pX)
{
ma_uint32 c;
const ma_uint32 channels = pLPF->channels;
const ma_int32 a = pLPF->a.s32;
const ma_int32 b = ((1 << MA_BIQUAD_FIXED_POINT_SHIFT) - a);
for (c = 0; c < pLPF->channels; c += 1) {
for (c = 0; c < channels; c += 1) {
ma_int32 r1 = pLPF->r1[c].s32;
ma_int32 x = pX[c];
ma_int32 y;
@@ -37024,10 +37028,11 @@ MA_API ma_result ma_hpf1_reinit(const ma_hpf1_config* pConfig, ma_hpf1* pHPF)
static MA_INLINE void ma_hpf1_process_pcm_frame_f32(ma_hpf1* pHPF, float* pY, const float* pX)
{
ma_uint32 c;
const ma_uint32 channels = pHPF->channels;
const float a = 1 - pHPF->a.f32;
const float b = 1 - a;
for (c = 0; c < pHPF->channels; c += 1) {
for (c = 0; c < channels; c += 1) {
float r1 = pHPF->r1[c].f32;
float x = pX[c];
float y;
@@ -37042,10 +37047,11 @@ static MA_INLINE void ma_hpf1_process_pcm_frame_f32(ma_hpf1* pHPF, float* pY, co
static MA_INLINE void ma_hpf1_process_pcm_frame_s16(ma_hpf1* pHPF, ma_int16* pY, const ma_int16* pX)
{
ma_uint32 c;
const ma_uint32 channels = pHPF->channels;
const ma_int32 a = ((1 << MA_BIQUAD_FIXED_POINT_SHIFT) - pHPF->a.s32);
const ma_int32 b = ((1 << MA_BIQUAD_FIXED_POINT_SHIFT) - a);
for (c = 0; c < pHPF->channels; c += 1) {
for (c = 0; c < channels; c += 1) {
ma_int32 r1 = pHPF->r1[c].s32;
ma_int32 x = pX[c];
ma_int32 y;
@@ -38382,6 +38388,7 @@ static void ma_linear_resampler_interpolate_frame_s16(ma_linear_resampler* pResa
{
ma_uint32 c;
ma_uint32 a;
const ma_uint32 channels = pResampler->config.channels;
const ma_uint32 shift = 12;
MA_ASSERT(pResampler != NULL);
@@ -38389,7 +38396,7 @@ static void ma_linear_resampler_interpolate_frame_s16(ma_linear_resampler* pResa
a = (pResampler->inTimeFrac << shift) / pResampler->config.sampleRateOut;
for (c = 0; c < pResampler->config.channels; c += 1) {
for (c = 0; c < channels; c += 1) {
ma_int16 s = ma_linear_resampler_mix_s16(pResampler->x0.s16[c], pResampler->x1.s16[c], a, shift);
pFrameOut[c] = s;
}
@@ -38400,13 +38407,14 @@ static void ma_linear_resampler_interpolate_frame_f32(ma_linear_resampler* pResa
{
ma_uint32 c;
float a;
const ma_uint32 channels = pResampler->config.channels;
MA_ASSERT(pResampler != NULL);
MA_ASSERT(pFrameOut != NULL);
a = (float)pResampler->inTimeFrac / pResampler->config.sampleRateOut;
for (c = 0; c < pResampler->config.channels; c += 1) {
for (c = 0; c < channels; c += 1) {
float s = ma_mix_f32_fast(pResampler->x0.f32[c], pResampler->x1.f32[c], a);
pFrameOut[c] = s;
}
@@ -48714,20 +48722,21 @@ static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__white(ma_noise* pNoise, voi
{
ma_uint64 iFrame;
ma_uint32 iChannel;
const ma_uint32 channels = pNoise->config.channels;
if (pNoise->config.format == ma_format_f32) {
float* pFramesOutF32 = (float*)pFramesOut;
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
float s = ma_noise_f32_white(pNoise);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = s;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutF32[iFrame*channels + iChannel] = s;
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = ma_noise_f32_white(pNoise);
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutF32[iFrame*channels + iChannel] = ma_noise_f32_white(pNoise);
}
}
}
@@ -48736,31 +48745,31 @@ static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__white(ma_noise* pNoise, voi
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
ma_int16 s = ma_noise_s16_white(pNoise);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = s;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutS16[iFrame*channels + iChannel] = s;
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = ma_noise_s16_white(pNoise);
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutS16[iFrame*channels + iChannel] = ma_noise_s16_white(pNoise);
}
}
}
} else {
ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
ma_uint32 bpf = bps * pNoise->config.channels;
const ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
const ma_uint32 bpf = bps * channels;
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
float s = ma_noise_f32_white(pNoise);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
float s = ma_noise_f32_white(pNoise);
ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
}
@@ -48831,20 +48840,21 @@ static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__pink(ma_noise* pNoise, void
{
ma_uint64 iFrame;
ma_uint32 iChannel;
const ma_uint32 channels = pNoise->config.channels;
if (pNoise->config.format == ma_format_f32) {
float* pFramesOutF32 = (float*)pFramesOut;
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
float s = ma_noise_f32_pink(pNoise, 0);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = s;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutF32[iFrame*channels + iChannel] = s;
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = ma_noise_f32_pink(pNoise, iChannel);
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutF32[iFrame*channels + iChannel] = ma_noise_f32_pink(pNoise, iChannel);
}
}
}
@@ -48853,31 +48863,31 @@ static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__pink(ma_noise* pNoise, void
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
ma_int16 s = ma_noise_s16_pink(pNoise, 0);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = s;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutS16[iFrame*channels + iChannel] = s;
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = ma_noise_s16_pink(pNoise, iChannel);
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutS16[iFrame*channels + iChannel] = ma_noise_s16_pink(pNoise, iChannel);
}
}
}
} else {
ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
ma_uint32 bpf = bps * pNoise->config.channels;
const ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
const ma_uint32 bpf = bps * channels;
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
float s = ma_noise_f32_pink(pNoise, 0);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
float s = ma_noise_f32_pink(pNoise, iChannel);
ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
}
@@ -48911,20 +48921,21 @@ static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__brownian(ma_noise* pNoise,
{
ma_uint64 iFrame;
ma_uint32 iChannel;
const ma_uint32 channels = pNoise->config.channels;
if (pNoise->config.format == ma_format_f32) {
float* pFramesOutF32 = (float*)pFramesOut;
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
float s = ma_noise_f32_brownian(pNoise, 0);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = s;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutF32[iFrame*channels + iChannel] = s;
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = ma_noise_f32_brownian(pNoise, iChannel);
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutF32[iFrame*channels + iChannel] = ma_noise_f32_brownian(pNoise, iChannel);
}
}
}
@@ -48933,31 +48944,31 @@ static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__brownian(ma_noise* pNoise,
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
ma_int16 s = ma_noise_s16_brownian(pNoise, 0);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = s;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutS16[iFrame*channels + iChannel] = s;
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = ma_noise_s16_brownian(pNoise, iChannel);
for (iChannel = 0; iChannel < channels; iChannel += 1) {
pFramesOutS16[iFrame*channels + iChannel] = ma_noise_s16_brownian(pNoise, iChannel);
}
}
}
} else {
ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
ma_uint32 bpf = bps * pNoise->config.channels;
const ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
const ma_uint32 bpf = bps * channels;
if (pNoise->config.duplicateChannels) {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
float s = ma_noise_f32_brownian(pNoise, 0);
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
}
}
} else {
for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
float s = ma_noise_f32_brownian(pNoise, iChannel);
ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
}