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JIT: avoid creating unnecessary temp for indirect virtual stub calls #116875

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merged 1 commit into from
Jun 20, 2025
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JIT: avoid creating unnecessary temp for indirect virtual stub calls #116875

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15 changes: 9 additions & 6 deletions src/coreclr/jit/importercalls.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -310,14 +310,17 @@ var_types Compiler::impImportCall(OPCODE opcode,
// complex expression. As it is evaluated after the args,
// it may cause registered args to be spilled. Simply spill it.
//
unsigned const lclNum = lvaGrabTemp(true DEBUGARG("VirtualCall with runtime lookup"));
if (compDonotInline())
if (!stubAddr->OperIs(GT_LCL_VAR))
{
return TYP_UNDEF;
}
unsigned const lclNum = lvaGrabTemp(true DEBUGARG("VirtualCall with runtime lookup"));
if (compDonotInline())
{
return TYP_UNDEF;
}

impStoreToTemp(lclNum, stubAddr, CHECK_SPILL_NONE);
stubAddr = gtNewLclvNode(lclNum, TYP_I_IMPL);
impStoreToTemp(lclNum, stubAddr, CHECK_SPILL_NONE);
stubAddr = gtNewLclvNode(lclNum, TYP_I_IMPL);
}

// Create the actual call node

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