//
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "integer-division"
#include "llvm/Transforms/Utils/IntegerDivision.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
using namespace llvm;
+#define DEBUG_TYPE "integer-division"
+
/// Generate code to compute the remainder of two signed integers. Returns the
/// remainder, which will have the sign of the dividend. Builder's insert point
/// should be pointing where the caller wants code generated, e.g. at the srem
Rem->dropAllReferences();
Rem->eraseFromParent();
- // If we didn't actually generate a udiv instruction, we're done
- BinaryOperator *BO = dyn_cast<BinaryOperator>(Builder.GetInsertPoint());
- if (!BO || BO->getOpcode() != Instruction::URem)
+ // If we didn't actually generate an urem instruction, we're done
+ // This happens for example if the input were constant. In this case the
+ // Builder insertion point was unchanged
+ if (Rem == Builder.GetInsertPoint())
return true;
+ BinaryOperator *BO = dyn_cast<BinaryOperator>(Builder.GetInsertPoint());
Rem = BO;
}
Div->dropAllReferences();
Div->eraseFromParent();
- // If we didn't actually generate a udiv instruction, we're done
- BinaryOperator *BO = dyn_cast<BinaryOperator>(Builder.GetInsertPoint());
- if (!BO || BO->getOpcode() != Instruction::UDiv)
+ // If we didn't actually generate an udiv instruction, we're done
+ // This happens for example if the input were constant. In this case the
+ // Builder insertion point was unchanged
+ if (Div == Builder.GetInsertPoint())
return true;
+ BinaryOperator *BO = dyn_cast<BinaryOperator>(Builder.GetInsertPoint());
Div = BO;
}