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JIT: capture class types when spilling a GDV arg #110675

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Merged
merged 2 commits into from
Dec 14, 2024
Merged

JIT: capture class types when spilling a GDV arg #110675

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864c2f5
JIT: capture class types when spilling a GDV arg
AndyAyersMS Dec 13, 2024
7d1b635
Update src/coreclr/jit/indirectcalltransformer.cpp
AndyAyersMS Dec 13, 2024
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17 changes: 15 additions & 2 deletions src/coreclr/jit/indirectcalltransformer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -754,8 +754,21 @@ class IndirectCallTransformer
//
void SpillArgToTempBeforeGuard(CallArg* arg)
{
unsigned tmpNum = compiler->lvaGrabTemp(true DEBUGARG("guarded devirt arg temp"));
GenTree* store = compiler->gtNewTempStore(tmpNum, arg->GetNode());
unsigned tmpNum = compiler->lvaGrabTemp(true DEBUGARG("guarded devirt arg temp"));
GenTree* const argNode = arg->GetNode();
GenTree* store = compiler->gtNewTempStore(tmpNum, argNode);

if (argNode->TypeIs(TYP_REF))
{
bool isExact = false;
bool isNonNull = false;
CORINFO_CLASS_HANDLE cls = compiler->gtGetClassHandle(argNode, &isExact, &isNonNull);
if (cls != NO_CLASS_HANDLE)
{
compiler->lvaSetClass(tmpNum, cls, isExact);
}
}

Statement* storeStmt = compiler->fgNewStmtFromTree(store, stmt->GetDebugInfo());
compiler->fgInsertStmtAtEnd(checkBlock, storeStmt);

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