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Keep track of how many memmove calls were turned into

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memcpy calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80915 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2009-09-03 13:37:16 +00:00
parent f0d568d38b
commit 05cd03b335
1 changed files with 4 additions and 1 deletions
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5
lib/Transforms/Scalar/MemCpyOptimizer.cpp
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@ -31,6 +31,7 @@ using namespace llvm;
STATISTIC(NumMemCpyInstr, "Number of memcpy instructions deleted");
STATISTIC(NumMemSetInfer, "Number of memsets inferred");
STATISTIC(NumMoveToCpy, "Number of memmoves converted to memcpy");
/// isBytewiseValue - If the specified value can be set by repeating the same
/// byte in memory, return the i8 value that it is represented with. This is
@ -728,10 +729,12 @@ bool MemCpyOpt::processMemMove(MemMoveInst *M) {
Module *Mod = M->getParent()->getParent()->getParent();
const Type *Ty = M->getLength()->getType();
M->setOperand(0, Intrinsic::getDeclaration(Mod, Intrinsic::memcpy, &Ty, 1));
// MemDep may have over conservative information about this instruction, just
// conservatively flush it from the cache.
getAnalysis<MemoryDependenceAnalysis>().removeInstruction(M);
++NumMoveToCpy;
return true;
}