add interpreter support for indirect goto / blockaddress. The interpreter
now correctly runs clang's test/CodeGen/indirect-goto.c. The JIT will abort
on it until someone feels compelled to implement this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85488 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index 7ceb8e8..01bd2c7 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -572,9 +572,9 @@
// runAtExitHandlers() assumes there are no stack frames, but
// if exit() was called, then it had a stack frame. Blow away
// the stack before interpreting atexit handlers.
- ECStack.clear ();
- runAtExitHandlers ();
- exit (GV.IntVal.zextOrTrunc(32).getZExtValue());
+ ECStack.clear();
+ runAtExitHandlers();
+ exit(GV.IntVal.zextOrTrunc(32).getZExtValue());
}
/// Pop the last stack frame off of ECStack and then copy the result
@@ -585,8 +585,8 @@
/// care of switching to the normal destination BB, if we are returning
/// from an invoke.
///
-void Interpreter::popStackAndReturnValueToCaller (const Type *RetTy,
- GenericValue Result) {
+void Interpreter::popStackAndReturnValueToCaller(const Type *RetTy,
+ GenericValue Result) {
// Pop the current stack frame.
ECStack.pop_back();
@@ -629,15 +629,15 @@
// Unwind stack
Instruction *Inst;
do {
- ECStack.pop_back ();
- if (ECStack.empty ())
+ ECStack.pop_back();
+ if (ECStack.empty())
llvm_report_error("Empty stack during unwind!");
- Inst = ECStack.back ().Caller.getInstruction ();
- } while (!(Inst && isa<InvokeInst> (Inst)));
+ Inst = ECStack.back().Caller.getInstruction();
+ } while (!(Inst && isa<InvokeInst>(Inst)));
// Return from invoke
- ExecutionContext &InvokingSF = ECStack.back ();
- InvokingSF.Caller = CallSite ();
+ ExecutionContext &InvokingSF = ECStack.back();
+ InvokingSF.Caller = CallSite();
// Go to exceptional destination BB of invoke instruction
SwitchToNewBasicBlock(cast<InvokeInst>(Inst)->getUnwindDest(), InvokingSF);
@@ -678,6 +678,13 @@
SwitchToNewBasicBlock(Dest, SF);
}
+void Interpreter::visitIndirectBrInst(IndirectBrInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ void *Dest = GVTOP(getOperandValue(I.getAddress(), SF));
+ SwitchToNewBasicBlock((BasicBlock*)Dest, SF);
+}
+
+
// SwitchToNewBasicBlock - This method is used to jump to a new basic block.
// This function handles the actual updating of block and instruction iterators
// as well as execution of all of the PHI nodes in the destination block.
@@ -827,7 +834,7 @@
// Check to see if this is an intrinsic function call...
Function *F = CS.getCalledFunction();
- if (F && F->isDeclaration ())
+ if (F && F->isDeclaration())
switch (F->getIntrinsicID()) {
case Intrinsic::not_intrinsic:
break;