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Work around compiler optimization bug

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This commit is contained in:
Ken Cooke 2017-10-05 09:27:07 -07:00
parent 218de29356
commit d8341a0929
2 changed files with 11 additions and 12 deletions
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19
libraries/audio/src/AudioDynamics.h
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@ -31,6 +31,9 @@
#define MULQ31(a,b) ((int32_t)(MUL64(a, b) >> 31))
#define MULDIV64(a,b,c) (int32_t)(MUL64(a, b) / (c))
#define ADDMOD32(a,b) (int32_t)((uint32_t)(a) + (uint32_t)(b))
#define SUBMOD32(a,b) (int32_t)((uint32_t)(a) - (uint32_t)(b))
//
// on x86 architecture, assume that SSE2 is present
//
@ -399,14 +402,14 @@ public:
x = MULHI(x, CICGAIN);
_buffer[i] = _acc1;
_acc1 += x; // integrator
_acc1 = ADDMOD32(_acc1, x); // integrator
i = (i + CIC1 - 1) & MASK;
x = _acc1 - _buffer[i]; // comb
x = SUBMOD32(_acc1, _buffer[i]); // comb
_buffer[i] = _acc2;
_acc2 += x; // integrator
_acc2 = ADDMOD32(_acc2, x); // integrator
i = (i + CIC2 - 1) & MASK;
x = _acc2 - _buffer[i]; // comb
x = SUBMOD32(_acc2, _buffer[i]); // comb
_index = (i + 1) & MASK; // skip unused tap
return x;
@ -464,14 +467,14 @@ public:
x = MULHI(x, CICGAIN);
_buffer[i] = _acc1;
_acc1 += x; // integrator
_acc1 = ADDMOD32(_acc1, x); // integrator
i = (i + CIC1 - 1) & MASK;
x = _acc1 - _buffer[i]; // comb
x = SUBMOD32(_acc1, _buffer[i]); // comb
_buffer[i] = _acc2;
_acc2 += x; // integrator
_acc2 = ADDMOD32(_acc2, x); // integrator
i = (i + CIC2 - 1) & MASK;
x = _acc2 - _buffer[i]; // comb
x = SUBMOD32(_acc2, _buffer[i]); // comb
_index = (i + 1) & MASK; // skip unused tap
return x;

4
libraries/audio/src/AudioGate.cpp
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@ -13,10 +13,6 @@
#include <cstdlib>
#include "AudioDynamics.h"
#ifdef __clang__
#pragma clang optimize off
#endif
// log2 domain headroom bits above 0dB (int32_t)
static const int LOG2_HEADROOM_Q30 = 1;