From 710b2fbe5445a843bba2f0edca038b3c9252bc64 Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter@pcc.me.uk>
Date: Sun, 12 Feb 2012 22:54:22 +0000
Subject: Teach KLEE how to handle new ConstantDataSequential type.

Patch by arrowdodger!

git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@150355 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Core/Executor.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'lib/Core/Executor.cpp')

diff --git a/lib/Core/Executor.cpp b/lib/Core/Executor.cpp
index e13cebb9..d9983493 100644
--- a/lib/Core/Executor.cpp
+++ b/lib/Core/Executor.cpp
@@ -399,6 +399,15 @@ void Executor::initializeGlobalObject(ExecutionState &state, ObjectState *os,
     for (unsigned i=0, e=cs->getNumOperands(); i != e; ++i)
       initializeGlobalObject(state, os, cs->getOperand(i), 
 			     offset + sl->getElementOffset(i));
+#if LLVM_VERSION_CODE >= LLVM_VERSION(3, 1)
+  } else if (const ConstantDataSequential *cds =
+               dyn_cast<ConstantDataSequential>(c)) {
+    unsigned elementSize =
+      targetData->getTypeStoreSize(cds->getElementType());
+    for (unsigned i=0, e=cds->getNumElements(); i != e; ++i)
+      initializeGlobalObject(state, os, cds->getElementAsConstant(i),
+                             offset + i*elementSize);
+#endif
   } else {
     unsigned StoreBits = targetData->getTypeStoreSizeInBits(c->getType());
     ref<ConstantExpr> C = evalConstant(c);
@@ -945,6 +954,17 @@ ref<klee::ConstantExpr> Executor::evalConstant(const Constant *c) {
       return Expr::createPointer(0);
     } else if (isa<UndefValue>(c) || isa<ConstantAggregateZero>(c)) {
       return ConstantExpr::create(0, getWidthForLLVMType(c->getType()));
+#if LLVM_VERSION_CODE >= LLVM_VERSION(3, 1)
+    } else if (const ConstantDataSequential *cds =
+                 dyn_cast<ConstantDataSequential>(c)) {
+      std::vector<ref<Expr> > kids;
+      for (unsigned i = 0, e = cds->getNumElements(); i != e; ++i) {
+        ref<Expr> kid = evalConstant(cds->getElementAsConstant(i));
+        kids.push_back(kid);
+      }
+      ref<Expr> res = ConcatExpr::createN(kids.size(), kids.data());
+      return cast<ConstantExpr>(res);
+#endif
     } else if (const ConstantStruct *cs = dyn_cast<ConstantStruct>(c)) {
       const StructLayout *sl = kmodule->targetData->getStructLayout(cs->getType());
       llvm::SmallVector<ref<Expr>, 4> kids;
-- 
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