diff options
| author | Chris Lattner <sabre@nondot.org> | 2005-11-05 08:21:11 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-11-05 08:21:11 +0000 |
| commit | 16b29e95626ffc03eca49c24c6280893c9d00640 (patch) | |
| tree | 4d31bdaae1f40778a668ed79675a492942811966 /llvm/lib/Transforms | |
| parent | 7a4c694ef7067e68d307b057901fccdf1aa265f6 (diff) | |
| download | bcm5719-llvm-16b29e95626ffc03eca49c24c6280893c9d00640.tar.gz bcm5719-llvm-16b29e95626ffc03eca49c24c6280893c9d00640.zip | |
Implement Transforms/TailCallElim/return-undef.ll, a trivial case
that has been sitting in my inbox since May 18. :)
llvm-svn: 24194
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp b/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp index a8c2a3a8b77..99c1f10865b 100644 --- a/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp +++ b/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp @@ -342,6 +342,7 @@ bool TailCallElim::ProcessReturningBlock(ReturnInst *Ret, BasicBlock *&OldEntry, // constant, return the value returned by the tail call, or that are being // accumulator recursion variable eliminated. if (Ret->getNumOperands() != 0 && Ret->getReturnValue() != CI && + !isa<UndefValue>(Ret->getReturnValue()) && AccumulatorRecursionEliminationInitVal == 0 && !getCommonReturnValue(Ret, CI)) return false; |
