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Make array bound checks optional and disabled by default.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1725 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-02-11 20:19:16 +00:00
parent 0cac4b8f3f
commit c0fbd57c97
1 changed files with 2 additions and 2 deletions
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4
lib/ExecutionEngine/Interpreter/Execution.cpp
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@ -26,7 +26,7 @@ using std::cerr;
cl::Flag QuietMode ("quiet" , "Do not emit any non-program output"); cl::Flag QuietMode ("quiet" , "Do not emit any non-program output");
cl::Alias QuietModeA("q" , "Alias for -quiet", cl::NoFlags, QuietMode); 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 // Create a TargetData structure to handle memory addressing and size/alignment
// computations // computations
@ -797,7 +797,7 @@ static PointerTy getElementOffset(MemAccessInst *I, ExecutionContext &SF) {
assert(I->getOperand(ArgOff)->getType() == Type::UIntTy); assert(I->getOperand(ArgOff)->getType() == Type::UIntTy);
unsigned Idx = getOperandValue(I->getOperand(ArgOff++), SF).UIntVal; unsigned Idx = getOperandValue(I->getOperand(ArgOff++), SF).UIntVal;
if (const ArrayType *AT = dyn_cast<ArrayType>(ST)) 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 cerr << "Out of range memory access to element #" << Idx
<< " of a " << AT->getNumElements() << " element array." << " of a " << AT->getNumElements() << " element array."
<< " Subscript #" << (ArgOff-I->getFirstIndexOperandNumber()) << " Subscript #" << (ArgOff-I->getFirstIndexOperandNumber())