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[clr-intero] Disable SVE intrinsics in the presence of the interpreter #123681

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Merged
davidwrighton merged 2 commits into from
Jan 29, 2026
Merged

[clr-intero] Disable SVE intrinsics in the presence of the interpreter #123681

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1917e28
Disable SVE intrinsics in the presence of the interpreter
davidwrighton Jan 27, 2026
f337fe3
Merge branch 'main' into disable_sve
davidwrighton Jan 28, 2026
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8 changes: 7 additions & 1 deletion src/coreclr/vm/codeman.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1423,7 +1423,13 @@ void EEJitManager::SetCpuInfo()
CPUCompileFlags.Set(InstructionSet_Sha256);
}

if (((cpuFeatures & ARM64IntrinsicConstants_Sve) != 0) && CLRConfig::GetConfigValue(CLRConfig::EXTERNAL_EnableArm64Sve))
if (((cpuFeatures & ARM64IntrinsicConstants_Sve) != 0) && CLRConfig::GetConfigValue(CLRConfig::EXTERNAL_EnableArm64Sve)
#ifdef FEATURE_INTERPRETER
// SVE intrinsics support for the FFR register adds a new concept of per method saved logical FFR state
// which the interpreter does not model.
&& !g_pConfig->EnableInterpreter()
#endif
)
{
uint32_t maxVectorTLength = (maxVectorTBitWidth / 8);
uint64_t sveLengthFromOS = GetSveLengthFromOS();
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