don't reserve space for tailcall arg areas. It explicitly managed.
llvm-svn: 22050
diff --git a/llvm/lib/Target/X86/X86ISelPattern.cpp b/llvm/lib/Target/X86/X86ISelPattern.cpp
index 28534a2..1d30608 100644
--- a/llvm/lib/Target/X86/X86ISelPattern.cpp
+++ b/llvm/lib/Target/X86/X86ISelPattern.cpp
@@ -3764,8 +3764,10 @@
MVT::ValueType StoreVT;
switch (Chain.getOpcode()) {
case ISD::CALLSEQ_START:
- // If we found the start of the call sequence, we're done.
- return Chain;
+ // If we found the start of the call sequence, we're done. We actually
+ // strip off the CALLSEQ_START node, to avoid generating the
+ // ADJCALLSTACKDOWN marker for the tail call.
+ return Chain.getOperand(0);
case ISD::TokenFactor: {
std::vector<SDOperand> Ops;
Ops.reserve(Chain.getNumOperands());