Snippets for amsynth 1.13.4 from Alpine ppc64le

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-ppc64le/community/amsynth/amsynth-1.13.4-r0.log.

src/VoiceBoard/Synth--.h:64:22: warning: inlining failed in call to 'float Lerper::nextValue()': call is unlikely and code size would grow [-Winline]
   64 |         inline float nextValue()
      |                      ^~~~~~~~~

src/VoiceBoard/Synth--.h:175:22: warning: inlining failed in call to 'float SmoothedParam::tick()': call is unlikely and code size would grow [-Winline]
  175 |         inline float tick()
      |                      ^~~~

src/amsynth_vst.cpp:53:5: warning: "__x86_64__" is not defined, evaluates to 0 [-Wundef]
   53 | #if __x86_64__
      |     ^~~~~~~~~~

src/amsynth_vst.cpp:178:5: warning: "__x86_64__" is not defined, evaluates to 0 [-Wundef]
  178 | #if __x86_64__
      |     ^~~~~~~~~~

vendor/freeverb/comb.hpp:36:14: warning: inlining failed in call to 'float comb::process(float)': call is unlikely and code size would grow [-Winline]
   36 | inline float comb::process(float input)
      |              ^~~~

vendor/freeverb/allpass.hpp:30:14: warning: inlining failed in call to 'float allpass::process(float)': call is unlikely and code size would grow [-Winline]
   30 | inline float allpass::process(float input)
      |              ^~~~~~~

src/JackOutput.h:37:7: warning: inlining failed in call to 'virtual JackOutput::~JackOutput() noexcept': call is unlikely and code size would grow [-Winline]
   37 | class JackOutput : public GenericOutput {
      |       ^~~~~~~~~~

src/amsynth_lv2.cpp:37:8: warning: inlining failed in call to 'amsynth_wrapper::~amsynth_wrapper() noexcept': call is unlikely and code size would grow [-Winline]
   37 | struct amsynth_wrapper {
      |        ^~~~~~~~~~~~~~~

src/TuningMap.h:28:7: warning: inlining failed in call to 'TuningMap::~TuningMap() noexcept': call is unlikely and code size would grow [-Winline]
   28 | class TuningMap
      |       ^~~~~~~~~

src/VoiceBoard/Oscillator.h:33:7: warning: inlining failed in call to 'constexpr Oscillator::Oscillator() noexcept': call is unlikely and code size would grow [-Winline]
   33 | class Oscillator
      |       ^~~~~~~~~~

src/PresetController.h:141:15: warning: inlining failed in call to 'virtual PresetController::RandomiseChange::~RandomiseChange() noexcept': call is unlikely and code size would grow [-Winline]
  141 |         class RandomiseChange: public ChangeData {
      |               ^~~~~~~~~~~~~~~

src/PresetController.h:32:8: warning: inlining failed in call to 'BankInfo::BankInfo(const BankInfo&)': call is unlikely and code size would grow [-Winline]
   32 | struct BankInfo {
      |        ^~~~~~~~