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[CodeGen][SDAG] Track returntwice in lowering info #92640

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Merged
merged 1 commit into from
May 19, 2024
Merged

[CodeGen][SDAG] Track returntwice in lowering info #92640

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4 changes: 4 additions & 0 deletions llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -214,6 +214,10 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf,
if (CI->isMustTailCall() && Fn->isVarArg())
MF->getFrameInfo().setHasMustTailInVarArgFunc(true);
}

// Determine if there is a call to setjmp in the machine function.
if (Call->hasFnAttr(Attribute::ReturnsTwice))
MF->setExposesReturnsTwice(true);
}

// Mark values used outside their block as exported, by allocating
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3 changes: 0 additions & 3 deletions llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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Expand Up @@ -680,9 +680,6 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
}
}

// Determine if there is a call to setjmp in the machine function.
MF->setExposesReturnsTwice(Fn.callsFunctionThatReturnsTwice());

// Determine if floating point is used for msvc
computeUsesMSVCFloatingPoint(TM.getTargetTriple(), Fn, MF->getMMI());

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