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| author | Evan Cheng <evan.cheng@apple.com> | 2010-01-27 00:07:07 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-01-27 00:07:07 +0000 |
| commit | 0c439eb2c8397996cbccaf2798e598052d9982c8 (patch) | |
| tree | 0900b4bd1e1489b3e42021affea56810029efa23 /lib/Target/SystemZ/SystemZISelLowering.cpp | |
| parent | 381993f1f2f947fcdaec814181a735091b22fcba (diff) | |
| download | llvm-0c439eb2c8397996cbccaf2798e598052d9982c8.tar.gz llvm-0c439eb2c8397996cbccaf2798e598052d9982c8.tar.bz2 llvm-0c439eb2c8397996cbccaf2798e598052d9982c8.tar.xz | |
Eliminate target hook IsEligibleForTailCallOptimization.
Target independent isel should always pass along the "tail call" property. Change
target hook LowerCall's parameter "isTailCall" into a refernce. If the target
decides it's impossible to honor the tail call request, it should set isTailCall
to false to make target independent isel happy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94626 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/SystemZ/SystemZISelLowering.cpp')
| -rw-r--r-- | lib/Target/SystemZ/SystemZISelLowering.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Target/SystemZ/SystemZISelLowering.cpp b/lib/Target/SystemZ/SystemZISelLowering.cpp index d6b476e5ea..f7405a52de 100644 --- a/lib/Target/SystemZ/SystemZISelLowering.cpp +++ b/lib/Target/SystemZ/SystemZISelLowering.cpp @@ -250,11 +250,13 @@ SystemZTargetLowering::LowerFormalArguments(SDValue Chain, SDValue SystemZTargetLowering::LowerCall(SDValue Chain, SDValue Callee, CallingConv::ID CallConv, bool isVarArg, - bool isTailCall, + bool &isTailCall, const SmallVectorImpl<ISD::OutputArg> &Outs, const SmallVectorImpl<ISD::InputArg> &Ins, DebugLoc dl, SelectionDAG &DAG, SmallVectorImpl<SDValue> &InVals) { + // SystemZ target does not yet support tail call optimization. + isTailCall = false; switch (CallConv) { default: |