Unify CALLSEQ_{START,END}. They take 4 parameters: the chain, two stack

adjustment fields, and an optional flag. If there is a "dynamic_stackalloc" in
the code, make sure that it's bracketed by CALLSEQ_START and CALLSEQ_END. If
not, then there is the potential for the stack to be changed while the stack's
being used by another instruction (like a call).

This can only result in tears...

llvm-svn: 44037

1 files changed, 4 insertions, 6 deletions

diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp
index d12d30b43b2..d0a5ed750ff 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp
@@ -399,12 +399,10 @@ LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG, unsigned CC)
   }      
 
   // Create the CALLSEQ_END node.
-  NodeTys = DAG.getVTList(MVT::Other, MVT::Flag);
-  Ops.clear();
-  Ops.push_back(Chain);
-  Ops.push_back(DAG.getConstant(NumBytes, getPointerTy()));
-  Ops.push_back(InFlag);
-  Chain  = DAG.getNode(ISD::CALLSEQ_END, NodeTys, &Ops[0], Ops.size());
+  Chain = DAG.getCALLSEQ_END(Chain,
+                             DAG.getConstant(NumBytes, getPointerTy()),
+                             DAG.getConstant(0, getPointerTy()),
+                             InFlag);
   InFlag = Chain.getValue(1);
 
   // Handle result values, copying them out of physregs into vregs that we