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Add a new hidden option to the interpreter to cause it to print

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out every volatile load and store.  This is useful for tracking 
down insane volatile memory bugs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53241 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2008-07-08 17:25:49 +00:00
parent 710429645a
commit 663ceeb948
1 changed files with 8 additions and 0 deletions
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8
lib/ExecutionEngine/Interpreter/Execution.cpp
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@@ -21,6 +21,7 @@
#include "llvm/Support/GetElementPtrTypeIterator.h" #include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/ADT/APInt.h" #include "llvm/ADT/APInt.h"
#include "llvm/ADT/Statistic.h" #include "llvm/ADT/Statistic.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h" #include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h" #include "llvm/Support/MathExtras.h"
#include <algorithm> #include <algorithm>
@@ -31,6 +32,9 @@ using namespace llvm;
STATISTIC(NumDynamicInsts, "Number of dynamic instructions executed"); STATISTIC(NumDynamicInsts, "Number of dynamic instructions executed");
static Interpreter *TheEE = 0; static Interpreter *TheEE = 0;
static cl::opt<bool> PrintVolatile("interpreter-print-volatile", cl::Hidden,
cl::desc("make the interpreter print every volatile load and store"));
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// Various Helper Functions // Various Helper Functions
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
@@ -830,6 +834,8 @@ void Interpreter::visitLoadInst(LoadInst &I) {
GenericValue Result; GenericValue Result;
LoadValueFromMemory(Result, Ptr, I.getType()); LoadValueFromMemory(Result, Ptr, I.getType());
SetValue(&I, Result, SF); SetValue(&I, Result, SF);
if (I.isVolatile() && PrintVolatile)
cerr << "Volatile load " << I;
} }
void Interpreter::visitStoreInst(StoreInst &I) { void Interpreter::visitStoreInst(StoreInst &I) {
@@ -838,6 +844,8 @@ void Interpreter::visitStoreInst(StoreInst &I) {
GenericValue SRC = getOperandValue(I.getPointerOperand(), SF); GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC), StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC),
I.getOperand(0)->getType()); I.getOperand(0)->getType());
if (I.isVolatile() && PrintVolatile)
cerr << "Volatile store: " << I;
} }
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//