eliminate use of Instruction::getPrev(). Patch by Gabor Greif in 2005.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36198 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index 3e7a3e7..98213c8 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -866,16 +866,19 @@
// If it is an unknown intrinsic function, use the intrinsic lowering
// class to transform it into hopefully tasty LLVM code.
//
- Instruction *Prev = CS.getInstruction()->getPrev();
+ BasicBlock::iterator me(CS.getInstruction());
BasicBlock *Parent = CS.getInstruction()->getParent();
+ bool atBegin(Parent->begin() == me);
+ if (!atBegin)
+ --me;
IL->LowerIntrinsicCall(cast<CallInst>(CS.getInstruction()));
// Restore the CurInst pointer to the first instruction newly inserted, if
// any.
- if (!Prev) {
+ if (atBegin) {
SF.CurInst = Parent->begin();
} else {
- SF.CurInst = Prev;
+ SF.CurInst = me;
++SF.CurInst;
}
return;