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libFLAC/cpu.c: Move cpu_id_ex into cpu_info_x86()

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This simplifies the C code without complexifying the preprocessor
code.
This commit is contained in:
Julian Calaby
2016-06-27 22:41:13 +10:00
committed by Erik de Castro Lopo
parent 79ca23ece3
commit eae338e0e6
1 changed files with 5 additions and 16 deletions
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21
src/libFLAC/cpu.c
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@@ -436,21 +436,6 @@ void FLAC__cpu_info (FLAC__CPUInfo *info)
#if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN
#if defined _MSC_VER || defined __INTEL_COMPILER
static inline void
cpu_id_ex (int *cpuinfo, int result)
{
// Stupid MSVC doesn't know how to optimise out:
// if (FLAC_AVC_SUPPORTER)
// __cpuidex(cpuinfo, level, 0); /* for AVX2 detection */
#if FLAC__AVX_SUPPORTED
__cpuidex(cpuinfo, result, 0); /* for AVX2 detection */
#else
__cpuid(cpuinfo, result); /* some old compilers don't support __cpuidex */
#endif
}
#endif
void FLAC__cpu_info_x86(FLAC__uint32 level, FLAC__uint32 *eax, FLAC__uint32 *ebx, FLAC__uint32 *ecx, FLAC__uint32 *edx)
{
#if defined _MSC_VER || defined __INTEL_COMPILER
@@ -458,7 +443,11 @@ void FLAC__cpu_info_x86(FLAC__uint32 level, FLAC__uint32 *eax, FLAC__uint32 *ebx
int ext = level & 0x80000000;
__cpuid(cpuinfo, ext);
if((unsigned)cpuinfo[0] >= level) {
cpu_id_ex (cpuinfo, ext);
#if FLAC__AVX_SUPPORTED
__cpuidex(cpuinfo, ext, 0); /* for AVX2 detection */
#else
__cpuid(cpuinfo, ext); /* some old compilers don't support __cpuidex */
#endif
*eax = cpuinfo[0]; *ebx = cpuinfo[1]; *ecx = cpuinfo[2]; *edx = cpuinfo[3];