Teach globalopt how to evaluate an invoke with a non-void return type.

llvm-svn: 152634

llvm/lib/Transforms/IPO/GlobalOpt.cpp

@@ -2561,11 +2561,6 @@ bool Evaluator::EvaluateBlock(BasicBlock::iterator CurInst,
           return false;
         delete ValueStack.pop_back_val();
         InstResult = RetVal;
-
-        if (InvokeInst *II = dyn_cast<InvokeInst>(CurInst)) {
-          NextBB = II->getNormalDest();
-          return true;
-        }
       }
     } else if (isa<TerminatorInst>(CurInst)) {
       if (BranchInst *BI = dyn_cast<BranchInst>(CurInst)) {
@@ -2610,6 +2605,12 @@ bool Evaluator::EvaluateBlock(BasicBlock::iterator CurInst,
       setVal(CurInst, InstResult);
     }
 
+    // If we just processed an invoke, we finished evaluating the block.
+    if (InvokeInst *II = dyn_cast<InvokeInst>(CurInst)) {
+      NextBB = II->getNormalDest();
+      return true;
+    }
+
     // Advance program counter.
     ++CurInst;
   }

llvm/test/Transforms/GlobalOpt/invoke.ll

@@ -0,0 +1,27 @@
+; RUN: opt -S -globalopt < %s | FileCheck %s
+; rdar://11022897
+
+; Globalopt should be able to evaluate an invoke.
+; CHECK: @tmp = global i32 1
+
+@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }]
+@tmp = global i32 0
+
+define i32 @one() {
+  ret i32 1
+}
+
+define void @_GLOBAL__I_a() {
+bb:
+  %tmp1 = invoke i32 @one()
+          to label %bb2 unwind label %bb4
+
+bb2:                                              ; preds = %bb
+  store i32 %tmp1, i32* @tmp
+  ret void
+
+bb4:                                              ; preds = %bb
+  %tmp5 = landingpad { i8*, i32 } personality i8* undef
+          filter [0 x i8*] zeroinitializer
+  unreachable
+}