SDR.CPUID

This module is for detecting which SIMD instruction sets your CPU supports. In particular, it can detect SSE4.2, AVX and AVX2.

Raw CPUID

cpuid

Arguments

:: Word32

Operation (EAX)

-> IO (Word32, Word32, Word32, Word32)

Result (EAX, EBX, ECX, EDX)

Execute the CPUID instruction

cpuidExtended

Arguments

:: Word32

Operation (EAX)

-> Word32

ECX

-> IO (Word32, Word32, Word32, Word32)

Result (EAX, EBX, ECX, EDX)

Execute the CPUID instruction setting ECX as well

High level CPU capabilities

data CPUInfo

Information about the features supported by your CPU

Constructors

CPUInfo

Fields

features :: Word32

extendedFeatures :: Maybe Word32

getCPUInfo :: IO CPUInfo

Get a CPUInfo

Features

hasSSE42 :: CPUInfo -> Bool

Check if the CPU supports SSE4.2

hasAVX :: CPUInfo -> Bool

Check if the CPU supports AVX

hasAVX2 :: CPUInfo -> Bool

Check if the CPU supports AVX2

Convenience functions

featureSelect

Arguments

:: CPUInfo

The CPU features

-> a

Default implementation

-> [(CPUInfo -> Bool, a)]

List of (feature, implementation) pairs

-> a

The selected implementation

Convenience function for selecting a function based on the features that the CPU supports