Make array bound checks optional and disabled by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1725 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index d92764e..d3aa4cc 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -26,7 +26,7 @@
cl::Flag QuietMode ("quiet" , "Do not emit any non-program output");
cl::Alias QuietModeA("q" , "Alias for -quiet", cl::NoFlags, QuietMode);
-
+cl::Flag ArrayChecksEnabled("array-checks", "Enable array bound checks");
// Create a TargetData structure to handle memory addressing and size/alignment
// computations
@@ -797,7 +797,7 @@
assert(I->getOperand(ArgOff)->getType() == Type::UIntTy);
unsigned Idx = getOperandValue(I->getOperand(ArgOff++), SF).UIntVal;
if (const ArrayType *AT = dyn_cast<ArrayType>(ST))
- if (Idx >= AT->getNumElements()) {
+ if (Idx >= AT->getNumElements() && ArrayChecksEnabled) {
cerr << "Out of range memory access to element #" << Idx
<< " of a " << AT->getNumElements() << " element array."
<< " Subscript #" << (ArgOff-I->getFirstIndexOperandNumber())