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common/cpu_detect: Remove unused functionality
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@ -3,8 +3,6 @@
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// Refer to the license.txt file included.
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#include <cstring>
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#include <string>
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#include <thread>
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#include "common/common_types.h"
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#include "common/x64/cpu_detect.h"
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@ -51,8 +49,6 @@ namespace Common {
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static CPUCaps Detect() {
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CPUCaps caps = {};
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caps.num_cores = std::thread::hardware_concurrency();
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// Assumes the CPU supports the CPUID instruction. Those that don't would likely not support
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// Citra at all anyway
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@ -96,15 +92,9 @@ static CPUCaps Detect() {
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caps.sse4_1 = true;
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if ((cpu_id[2] >> 20) & 1)
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caps.sse4_2 = true;
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if ((cpu_id[2] >> 22) & 1)
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caps.movbe = true;
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if ((cpu_id[2] >> 25) & 1)
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caps.aes = true;
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if ((cpu_id[3] >> 24) & 1) {
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caps.fxsave_fxrstor = true;
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}
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// AVX support requires 3 separate checks:
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// - Is the AVX bit set in CPUID?
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// - Is the XSAVE bit set in CPUID?
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@ -129,8 +119,6 @@ static CPUCaps Detect() {
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}
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}
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caps.flush_to_zero = caps.sse;
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if (max_ex_fn >= 0x80000004) {
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// Extract CPU model string
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__cpuid(cpu_id, 0x80000002);
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@ -144,14 +132,8 @@ static CPUCaps Detect() {
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if (max_ex_fn >= 0x80000001) {
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// Check for more features
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__cpuid(cpu_id, 0x80000001);
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if (cpu_id[2] & 1)
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caps.lahf_sahf_64 = true;
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if ((cpu_id[2] >> 5) & 1)
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caps.lzcnt = true;
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if ((cpu_id[2] >> 16) & 1)
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caps.fma4 = true;
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if ((cpu_id[3] >> 29) & 1)
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caps.long_mode = true;
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}
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return caps;
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@ -162,48 +144,4 @@ const CPUCaps& GetCPUCaps() {
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return caps;
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}
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std::string GetCPUCapsString() {
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auto caps = GetCPUCaps();
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std::string sum(caps.cpu_string);
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sum += " (";
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sum += caps.brand_string;
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sum += ")";
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if (caps.sse)
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sum += ", SSE";
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if (caps.sse2) {
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sum += ", SSE2";
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if (!caps.flush_to_zero)
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sum += " (without DAZ)";
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}
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if (caps.sse3)
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sum += ", SSE3";
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if (caps.ssse3)
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sum += ", SSSE3";
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if (caps.sse4_1)
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sum += ", SSE4.1";
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if (caps.sse4_2)
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sum += ", SSE4.2";
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if (caps.avx)
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sum += ", AVX";
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if (caps.avx2)
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sum += ", AVX2";
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if (caps.bmi1)
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sum += ", BMI1";
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if (caps.bmi2)
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sum += ", BMI2";
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if (caps.fma)
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sum += ", FMA";
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if (caps.aes)
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sum += ", AES";
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if (caps.movbe)
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sum += ", MOVBE";
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if (caps.long_mode)
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sum += ", 64-bit support";
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return sum;
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}
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} // namespace Common
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@ -4,8 +4,6 @@
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#pragma once
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#include <string>
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namespace Common {
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/// x86/x64 CPU vendors that may be detected by this module
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@ -20,14 +18,12 @@ struct CPUCaps {
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CPUVendor vendor;
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char cpu_string[0x21];
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char brand_string[0x41];
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int num_cores;
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bool sse;
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bool sse2;
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bool sse3;
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bool ssse3;
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bool sse4_1;
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bool sse4_2;
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bool lzcnt;
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bool avx;
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bool avx2;
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bool bmi1;
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@ -35,20 +31,6 @@ struct CPUCaps {
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bool fma;
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bool fma4;
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bool aes;
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// Support for the FXSAVE and FXRSTOR instructions
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bool fxsave_fxrstor;
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bool movbe;
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// This flag indicates that the hardware supports some mode in which denormal inputs and outputs
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// are automatically set to (signed) zero.
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bool flush_to_zero;
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// Support for LAHF and SAHF instructions in 64-bit mode
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bool lahf_sahf_64;
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bool long_mode;
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};
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/**
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@ -57,10 +39,4 @@ struct CPUCaps {
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*/
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const CPUCaps& GetCPUCaps();
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/**
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* Gets a string summary of the name and supported capabilities of the host CPU
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* @return String summary
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*/
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std::string GetCPUCapsString();
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} // namespace Common
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