ObjFW  Check-in [e7465cd688]

Overview
Comment:OFSystemInfo: Remove check for SSE support in OS

The check was wrong and would return false on OSes that are SSE-enabled
but not AVX-enabled.

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Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: e7465cd688e000c94700758fcfb07a8a795aab9e72a920a6fe37d494d28a7e2e
User & Date: js on 2023-11-10 01:31:40
Other Links: manifest | tags
Context
2023-12-21
15:22
OFSystemInfo: Check if the OS enabled SSE support check-in: 1f26898324 user: js tags: trunk
2023-11-10
01:31
OFSystemInfo: Remove check for SSE support in OS check-in: e7465cd688 user: js tags: trunk
00:25
OFSystemInfo: Check OS support for SSE/AVX/AVX512 check-in: 42efa8c05a user: js tags: trunk
Changes
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Modified src/OFSystemInfo.h from [e1f6b5972e] to [721a4a4cb5].

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 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU supports enhanced 3DNow!
 */
+ (bool)supportsEnhanced3DNow;

/**
 * @brief Returns whether the CPU and OS support SSE.
 * @brief Returns whether the CPU supports SSE.
 *
 * @note This only checks CPU support and assumes OS support!
 *
 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU and OS support SSE
 * @return Whether the CPU supports SSE
 */
+ (bool)supportsSSE;

/**
 * @brief Returns whether the CPU and OS support SSE2.
 * @brief Returns whether the CPU supports SSE2.
 *
 * @note This only checks CPU support and assumes OS support!
 *
 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU and OS support SSE2
 * @return Whether the CPU supports SSE2
 */
+ (bool)supportsSSE2;

/**
 * @brief Returns whether the CPU and OS support SSE3.
 * @brief Returns whether the CPU supports SSE3.
 *
 * @note This only checks CPU support and assumes OS support!
 *
 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU and OS support SSE3
 * @return Whether the CPU supports SSE3
 */
+ (bool)supportsSSE3;

/**
 * @brief Returns whether the CPU and OS support SSSE3.
 * @brief Returns whether the CPU supports SSSE3.
 *
 * @note This only checks CPU support and assumes OS support!
 *
 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU and OS support SSSE3
 * @return Whether the CPU supports SSSE3
 */
+ (bool)supportsSSSE3;

/**
 * @brief Returns whether the CPU and OS support SSE4.1.
 * @brief Returns whether the CPU supports SSE4.1.
 *
 * @note This only checks CPU support and assumes OS support!
 *
 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU and OS support SSE4.1
 * @return Whether the CPU supports SSE4.1
 */
+ (bool)supportsSSE41;

/**
 * @brief Returns whether the CPU and OS support SSE4.2.
 * @brief Returns whether the CPU supports SSE4.2.
 *
 * @note This only checks CPU support and assumes OS support!
 *
 * @note This method is only available on AMD64 and x86.
 *
 * @return Whether the CPU and OS support SSE4.2
 * @return Whether the CPU supports SSE4.2
 */
+ (bool)supportsSSE42;

/**
 * @brief Returns whether the CPU and OS support AVX.
 *
 * @note This method is only available on AMD64 and x86.
︙

Modified src/OFSystemInfo.m from [dde9f4593e] to [81b1425388].

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{
	return (x86CPUID(0x80000000, 0).eax >= 0x80000001 &&
	    x86CPUID(0x80000001, 0).edx & (1u << 30));
}

+ (bool)supportsSSE
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).edx & (1u << 25)) &&
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).edx & (1u << 25));
	    x86XCR(0).eax & (1u << 1));
}

+ (bool)supportsSSE2
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).edx & (1u << 26)) &&
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).edx & (1u << 26));
	    x86XCR(0).eax & (1u << 1));
}

+ (bool)supportsSSE3
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 0)) &&
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 0));
	    x86XCR(0).eax & (1u << 1));
}

+ (bool)supportsSSSE3
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 9)) &&
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 9));
	    x86XCR(0).eax & (1u << 1));
}

+ (bool)supportsSSE41
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 19)) &&
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 19));
	    x86XCR(0).eax & (1u << 1));
}

+ (bool)supportsSSE42
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 20)) &&
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 20));
	    x86XCR(0).eax & (1u << 1));
}

+ (bool)supportsAVX
{
	return ((x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 28)) &&
	    x86XCR(0).eax & (1u << 2));
	    (x86XCR(0).eax & 0x6) == 0x6);
}

+ (bool)supportsAVX2
{
	return ((x86CPUID(0, 0).eax >= 7 && (x86CPUID(7, 0).ebx & (1u << 5))) &&
	    x86XCR(0).eax & (1u << 2));
	    (x86XCR(0).eax & 0x6) == 0x6);
}

+ (bool)supportsAESNI
{
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 25));
}
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{
	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 29));
}

+ (bool)supportsAVX512Foundation
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 16)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512ConflictDetectionInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 28)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512ExponentialAndReciprocalInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 27)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512PrefetchInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 26)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512VectorLengthExtensions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 31)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512DoublewordAndQuadwordInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 17)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512ByteAndWordInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 30)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512IntegerFusedMultiplyAdd
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 21)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512VectorByteManipulationInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ecx & (1u << 1)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512VectorPopulationCountInstruction
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ecx & (1u << 14)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512VectorNeuralNetworkInstructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ecx & (1u << 11)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512VectorByteManipulationInstructions2
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ecx & (1u << 6)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512BitAlgorithms
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ecx & (1u << 12)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512Float16Instructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).edx & (1u << 23)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}

+ (bool)supportsAVX512BFloat16Instructions
{
	return ((x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 1).eax & (1u << 5)) &&
	    x86XCR(0).eax & ((1u << 5) | (1u << 6) | (1u << 7)));
	    (x86XCR(0).eax & 0xE6) == 0xE6);
}
#endif

#if defined(OF_POWERPC) || defined(OF_POWERPC64)
+ (bool)supportsAltiVec
{
# if defined(OF_MACOS)
︙

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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