From 49ad898e3314771e9a87290ad795f31ce78e1f2d Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 13 Oct 2001 07:01:45 +0000
Subject: [PATCH] Implement the invoke instruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@774 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/iCall.cpp | 61 ++++++++++++++++++++++++++++++++++++--------
 1 file changed, 50 insertions(+), 11 deletions(-)

diff --git a/lib/VMCore/iCall.cpp b/lib/VMCore/iCall.cpp
index f739730b67d..fc718d6887f 100644
--- a/lib/VMCore/iCall.cpp
+++ b/lib/VMCore/iCall.cpp
@@ -1,27 +1,33 @@
-//===-- iCall.cpp - Implement the call & icall instructions ------*- C++ -*--=//
+//===-- iCall.cpp - Implement the call & invoke instructions -----*- C++ -*--=//
 //
-// This file implements the call and icall instructions.
+// This file implements the call and invoke instructions.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/iOther.h"
+#include "llvm/iTerminators.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/Method.h"
 
-CallInst::CallInst(Method *M, const vector<Value*> &params, 
-                   const string &Name) 
-  : Instruction(M->getReturnType(), Instruction::Call, Name) {
+//===----------------------------------------------------------------------===//
+//                        CallInst Implementation
+//===----------------------------------------------------------------------===//
 
+CallInst::CallInst(Value *Meth, const vector<Value*> &params, 
+                   const string &Name) 
+  : Instruction(cast<MethodType>(cast<PointerType>(Meth->getType())
+				 ->getValueType())->getReturnType(),
+		Instruction::Call, Name) {
   Operands.reserve(1+params.size());
-  Operands.push_back(Use(M, this));
+  Operands.push_back(Use(Meth, this));
+
+  const MethodType *MTy = 
+    cast<MethodType>(cast<PointerType>(Meth->getType())->getValueType());
 
-  const MethodType::ParamTypes &PL = M->getMethodType()->getParamTypes();
+  const MethodType::ParamTypes &PL = MTy->getParamTypes();
   assert((params.size() == PL.size()) || 
-	 (M->getMethodType()->isVarArg() && params.size() > PL.size()) &&
+	 (MTy->isVarArg() && params.size() >= PL.size()-1) &&
 	 "Calling a function with bad signature");
-#ifndef NDEBUG
-  MethodType::ParamTypes::const_iterator It = PL.begin();
-#endif
   for (unsigned i = 0; i < params.size(); i++)
     Operands.push_back(Use(params[i], this));
 }
@@ -33,3 +39,36 @@ CallInst::CallInst(const CallInst &CI)
     Operands.push_back(Use(CI.Operands[i], this));
 }
 
+//===----------------------------------------------------------------------===//
+//                        InvokeInst Implementation
+//===----------------------------------------------------------------------===//
+
+InvokeInst::InvokeInst(Value *Meth, BasicBlock *IfNormal, \
+		       BasicBlock *IfException, const vector<Value*>&params,
+		       const string &Name)
+  : TerminatorInst(cast<MethodType>(cast<PointerType>(Meth->getType())
+				    ->getValueType())->getReturnType(),
+		   Instruction::Invoke, Name) {
+  Operands.reserve(3+params.size());
+  Operands.push_back(Use(Meth, this));
+  Operands.push_back(Use(IfNormal, this));
+  Operands.push_back(Use(IfException, this));
+  const MethodType *MTy = 
+    cast<MethodType>(cast<PointerType>(Meth->getType())->getValueType());
+  
+  const MethodType::ParamTypes &PL = MTy->getParamTypes();
+  assert((params.size() == PL.size()) || 
+	 (MTy->isVarArg() && params.size() > PL.size()) &&
+	 "Calling a function with bad signature");
+  
+  for (unsigned i = 0; i < params.size(); i++)
+    Operands.push_back(Use(params[i], this));
+}
+
+InvokeInst::InvokeInst(const InvokeInst &CI) 
+  : TerminatorInst(CI.getType(), Instruction::Invoke) {
+  Operands.reserve(CI.Operands.size());
+  for (unsigned i = 0; i < CI.Operands.size(); ++i)
+    Operands.push_back(Use(CI.Operands[i], this));
+}
+
-- 
2.34.1