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Fix a problem discovered on self host. 

llvm-svn: 86278
This commit is contained in:
Chris Lattner 2009-11-06 19:21:48 +00:00
parent 443f677302
commit a8b9ce3f07
2 changed files with 23 additions and 1 deletions
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2
llvm/lib/Transforms/Scalar/JumpThreading.cpp
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@ -267,7 +267,7 @@ ComputeValueKnownInPredecessors(Value *V, BasicBlock *BB,PredValueInfo &Result){
ConstantInt *CI = dyn_cast<ConstantInt>(V); ConstantInt *CI = dyn_cast<ConstantInt>(V);
Result.resize(TheFirstPHI->getNumIncomingValues()); Result.resize(TheFirstPHI->getNumIncomingValues());
for (unsigned i = 0, e = Result.size(); i != e; ++i) for (unsigned i = 0, e = Result.size(); i != e; ++i)
Result.push_back(std::make_pair(CI, TheFirstPHI->getIncomingBlock(i))); Result[i] = std::make_pair(CI, TheFirstPHI->getIncomingBlock(i));
return true; return true;
} }

22
llvm/test/Transforms/JumpThreading/crash.ll
View File

@ -170,3 +170,25 @@ bb32.i:
ret i32 1 ret i32 1
} }
define fastcc void @test5(i1 %tmp, i32 %tmp1) nounwind ssp {
entry:
br i1 %tmp, label %bb12, label %bb13
bb12:
br label %bb13
bb13:
%.lcssa31 = phi i32 [ undef, %bb12 ], [ %tmp1, %entry ]
%A = and i1 undef, undef
br i1 %A, label %bb15, label %bb61
bb15:
ret void
bb61:
ret void
}