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explain what earlyclobber actually is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56415 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -68,9 +68,9 @@ private:
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/// This is only valid on definitions of registers.
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bool IsDead : 1;
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/// IsEarlyClobber - True if this MO_Register operand is marked earlyclobber
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/// in an inline asm. Flag is not valid for any other case. See gcc doc
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/// for description of earlyclobber.
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/// IsEarlyClobber - True if this MO_Register 'def' operand is written to
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/// by the MachineInstr before all input registers are read. This is used to
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/// model the GCC inline asm '&' constraint modifier.
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bool IsEarlyClobber : 1;
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/// OverlapsEarlyClobber - True if this MO_Register operand is used as an
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