diff options
Diffstat (limited to 'libs/ardour/globals.cc')
| -rw-r--r-- | libs/ardour/globals.cc | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/libs/ardour/globals.cc b/libs/ardour/globals.cc index 515d9e1c2f..2806ab60a8 100644 --- a/libs/ardour/globals.cc +++ b/libs/ardour/globals.cc @@ -197,43 +197,44 @@ setup_hardware_optimization (bool try_optimization) { bool generic_mix_functions = true; + if (try_optimization) { #if defined (ARCH_X86) && defined (BUILD_SSE_OPTIMIZATIONS) - unsigned int use_sse = 0; + unsigned long use_sse = 0; #ifndef USE_X86_64_ASM - asm volatile ( + asm ( "mov $1, %%eax\n" "pushl %%ebx\n" "cpuid\n" - "popl %%ebx\n" - "andl $33554432, %%edx\n" "movl %%edx, %0\n" - : "=m" (use_sse) + "popl %%ebx\n" + : "=l" (use_sse) : : "%eax", "%ecx", "%edx", "memory"); + #else - asm volatile ( - "movq $1, %%rax\n" + asm ( "pushq %%rbx\n" + "movq $1, %%rax\n" "cpuid\n" - "popq %%rbx\n" - "andq $33554432, %%rdx\n" "movq %%rdx, %0\n" - : "=m" (use_sse) + "popq %%rbx\n" + : "=l" (use_sse) : - : "%rax", "%rcx", "%rdx", "memory"); + : "%rax", "%rcx", "%rdx", "memory"); #endif /* USE_X86_64_ASM */ + use_sse &= (1 << 25); // bit 25 = SSE support if (use_sse) { info << "Using SSE optimized routines" << endmsg; // SSE SET - Session::compute_peak = x86_sse_compute_peak; + Session::compute_peak = x86_sse_compute_peak; Session::apply_gain_to_buffer = x86_sse_apply_gain_to_buffer; Session::mix_buffers_with_gain = x86_sse_mix_buffers_with_gain; Session::mix_buffers_no_gain = x86_sse_mix_buffers_no_gain; |