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Fix SSE detection on non-AVX CPUs (#135)

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Fixes #4. This is based on #115 with a few modifications:
 - Removed use of __builtin_cpu_supports since it relies on cpuid and doesn't improve on the current situation,
 - Added detection for all of sse, sse2, sse3, ssse3, sse4_1 and sse4_2,
 - Added tests for Atom, Nehalem, and P3 processors,

Thx to @gadoofou87 for providing the original PR.
It also removes the need for #92

* Fix SSE detection on non-AVX CPUs
* Fixes typo
* Mock OSX sysctlbyname in tests
* Also update other tests
* FakeCpu is reset between each tests
* Fix conflicting name on Windows
* Disable pre AVX cpu sse detection tests on Windows
* Guard OS specific code with macros
* Fix missing import for tests
* Fix wrong function prototype
* Fix wrong mocking of P3 on Windows
* Completely guard OS specific parts in x86 tests
* Store DWORD instead unsigned long for x86 tests
This commit is contained in:
Guillaume Chatelet
2020-10-09 17:20:25 +02:00
committed by GitHub
parent 22a5362e11
commit 4795373db2
6 changed files with 428 additions and 38 deletions
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4
include/cpu_features_macros.h
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@ -79,6 +79,10 @@
#define CPU_FEATURES_OS_WINDOWS
#endif
#if (defined(__apple__) || defined(__APPLE__) || defined(__MACH__))
#define CPU_FEATURES_OS_DARWIN
#endif
////////////////////////////////////////////////////////////////////////////////
// Compilers
////////////////////////////////////////////////////////////////////////////////

3
include/internal/cpuid_x86.h
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@ -26,7 +26,8 @@ typedef struct {
uint32_t eax, ebx, ecx, edx;
} Leaf;
Leaf CpuIdEx(uint32_t leaf_id, int ecx);
// Returns the result of a call to the cpuid instruction.
Leaf GetCpuidLeaf(uint32_t leaf_id, int ecx);
// Returns the eax value of the XCR0 register.
uint32_t GetXCR0Eax(void);