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When removing a value from GVN's leaders list, don't drop the Next pointer in a corner case.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122822 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2011-01-04 19:10:54 +00:00
parent c84e3c0c03
commit 680ac4ff4e
1 changed files with 2 additions and 1 deletions
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3
lib/Transforms/Scalar/GVN.cpp
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@ -466,6 +466,7 @@ namespace {
NumberTableEntry* Next = Curr->Next; NumberTableEntry* Next = Curr->Next;
Curr->Val = Next->Val; Curr->Val = Next->Val;
Curr->BB = Next->BB; Curr->BB = Next->BB;
Curr->Next = Next->Next;
} }
} }
} }
@ -1693,7 +1694,7 @@ bool GVN::processInstruction(Instruction *I,
return false; return false;
} }
uint32_t NextNum = VN.getNextUnusedValueNumber(); uint32_t NextNum = VN.getNextUnusedValueNumber();
unsigned Num = VN.lookup_or_add(I); unsigned Num = VN.lookup_or_add(I);