[opaque pointer types] Update InvokeInst creation APIs to consistently
accept a callee-type argument.

Note: this also adds a new C API and soft-deprecates the old C API.

Differential Revision: https://reviews.llvm.org/D56557

llvm-svn: 351122
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index f545903..8916d47 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -2975,9 +2975,22 @@
                              LLVMValueRef *Args, unsigned NumArgs,
                              LLVMBasicBlockRef Then, LLVMBasicBlockRef Catch,
                              const char *Name) {
-  return wrap(unwrap(B)->CreateInvoke(unwrap(Fn), unwrap(Then), unwrap(Catch),
-                                      makeArrayRef(unwrap(Args), NumArgs),
-                                      Name));
+  Value *V = unwrap(Fn);
+  FunctionType *FnT =
+      cast<FunctionType>(cast<PointerType>(V->getType())->getElementType());
+
+  return wrap(
+      unwrap(B)->CreateInvoke(FnT, unwrap(Fn), unwrap(Then), unwrap(Catch),
+                              makeArrayRef(unwrap(Args), NumArgs), Name));
+}
+
+LLVMValueRef LLVMBuildInvoke2(LLVMBuilderRef B, LLVMTypeRef Ty, LLVMValueRef Fn,
+                              LLVMValueRef *Args, unsigned NumArgs,
+                              LLVMBasicBlockRef Then, LLVMBasicBlockRef Catch,
+                              const char *Name) {
+  return wrap(unwrap(B)->CreateInvoke(
+      unwrap<FunctionType>(Ty), unwrap(Fn), unwrap(Then), unwrap(Catch),
+      makeArrayRef(unwrap(Args), NumArgs), Name));
 }
 
 LLVMValueRef LLVMBuildLandingPad(LLVMBuilderRef B, LLVMTypeRef Ty,