Don't let the memory allocator outsmart GVN. ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40655 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index ff66250..3d04fc4 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -558,6 +558,11 @@
nextValueNumber = 1;
}
+/// erase - Remove a value from the value numbering
+void ValueTable::erase(Value* V) {
+ valueNumbering.erase(V);
+}
+
//===----------------------------------------------------------------------===//
// ValueNumberedSet Class
//===----------------------------------------------------------------------===//
@@ -871,6 +876,7 @@
if (currAvail.test(num)) {
Value* repl = find_leader(currAvail, num);
+ VN.erase(I);
I->replaceAllUsesWith(repl);
toErase.push_back(I);
return true;