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Clarify what mysterious check means.

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llvm-svn: 108005
This commit is contained in:
Bill Wendling 2010-07-09 19:44:12 +00:00
parent e7a09d478d
commit 07a0700418
1 changed files with 3 additions and 0 deletions
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3
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -300,6 +300,9 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
for (MachineBasicBlock::const_iterator
II = MBB->begin(), IE = MBB->end(); II != IE; ++II) {
const TargetInstrDesc &TID = TM.getInstrInfo()->get(II->getOpcode());
// Operand 1 of an inline asm instruction indicates whether the asm
// needs stack or not.
if ((II->isInlineAsm() && II->getOperand(1).getImm()) ||
(TID.isCall() && !TID.isReturn())) {
MFI->setHasCalls(true);