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Remove InstructionSet_VectorT256 if AVX2 is disabled via env var #89413

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Merged
merged 1 commit into from
Jul 25, 2023
Merged

Remove InstructionSet_VectorT256 if AVX2 is disabled via env var #89413

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15 changes: 14 additions & 1 deletion src/coreclr/vm/codeman.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1299,7 +1299,6 @@ void EEJitManager::SetCpuInfo()
if (((cpuFeatures & XArchIntrinsicConstants_VectorT256) != 0) && ((maxVectorTBitWidth == 0) || (maxVectorTBitWidth >= 256)))
{
// We allow 256-bit Vector<T> by default
CPUCompileFlags.Clear(InstructionSet_VectorT128);
CPUCompileFlags.Set(InstructionSet_VectorT256);
}

Expand Down Expand Up @@ -1541,6 +1540,20 @@ void EEJitManager::SetCpuInfo()
CPUCompileFlags.EnsureValidInstructionSetSupport();

#if defined(TARGET_X86) || defined(TARGET_AMD64)

// Clean up mutually exclusive ISAs
if (CPUCompileFlags.IsSet(InstructionSet_VectorT512))
{
// We don't currently support InstructionSet_VectorT512, but just to
// make it future proof.
CPUCompileFlags.Clear(InstructionSet_VectorT256);
CPUCompileFlags.Clear(InstructionSet_VectorT128);
}
else if (CPUCompileFlags.IsSet(InstructionSet_VectorT256))
{
CPUCompileFlags.Clear(InstructionSet_VectorT128);
}

int cpuidInfo[4];

const int CPUID_EAX = 0;
Expand Down