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Update stale comment.

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llvm-svn: 146220
This commit is contained in:
Devang Patel 2011-12-09 01:18:48 +00:00
parent 8f3db3867c
commit cba55d6c8d
1 changed files with 1 additions and 4 deletions
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5
lib/CodeGen/MachineSink.cpp
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@ -152,10 +152,7 @@ MachineSinking::AllUsesDominatedByBlock(unsigned Reg,
if (MRI->use_nodbg_empty(Reg))
return true;
// Ignoring debug uses is necessary so debug info doesn't affect the code.
// This may leave a referencing dbg_value in the original block, before
// the definition of the vreg. Dwarf generator handles this although the
// user might not get the right info at runtime.
// Ignoring debug uses because debug info doesn't affect the code.
// BreakPHIEdge is true if all the uses are in the successor MBB being sunken
// into and they are all PHI nodes. In this case, machine-sink must break