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These are legal for tail calls
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21723 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -65,10 +65,13 @@ static Function *CreateFibFunction(Module *M) {
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// create fib(x-1)
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Value *Sub = BinaryOperator::createSub(ArgX, One, "arg", RecurseBB);
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Value *CallFibX1 = new CallInst(FibF, Sub, "fibx1", RecurseBB);
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CallFibX1->setTailCall(true);
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// create fib(x-2)
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Sub = BinaryOperator::createSub(ArgX, Two, "arg", RecurseBB);
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Value *CallFibX2 = new CallInst(FibF, Sub, "fibx2", RecurseBB);
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CallFibX2->setTailCall(true);
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// fib(x-1)+fib(x-2)
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Value *Sum = BinaryOperator::createAdd(CallFibX1, CallFibX2,
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@ -87,7 +87,8 @@ int main() {
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// Pass Ten to the call call:
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std::vector<Value*> Params;
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Params.push_back(Ten);
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CallInst * Add1CallRes = new CallInst(Add1F, Params, "add1", BB);
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CallInst *Add1CallRes = new CallInst(Add1F, Params, "add1", BB);
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Add1CallRes->setTailCall(true);
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// Create the return instruction and add it to the basic block.
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new ReturnInst(Add1CallRes, BB);
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