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Bug fix. ~1U marks the val# dead.

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llvm-svn: 40975
This commit is contained in:
Evan Cheng 2007-08-09 23:14:39 +00:00
parent 21c0eac378
commit 0293fe7483
1 changed files with 1 additions and 1 deletions
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2
lib/CodeGen/SimpleRegisterCoalescing.cpp
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@ -645,7 +645,7 @@ bool SimpleRegisterCoalescing::JoinIntervals(LiveInterval &LHS, LiveInterval &RH
// Otherwise, use the specified value #.
LHSValNoAssignments[VN] = RHSValID;
if (VN != (unsigned)RHSValID)
ValueNumberInfo[VN].def = RHSValNoInfo.def;
ValueNumberInfo[VN]->def = ~1U; // Now this val# is dead.
else
ValueNumberInfo[VN] = RHSValNoInfo;
}