Retain the name of the new internal global that's been shrunk.
It's possible (e.g. after an LTO build) that an internal global may be used for
debugging purposes. If that's the case appending a '.b' to it makes it hard to
find that variable. Steal the name from the old GV before deleting it so that
they can find that variable again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175104 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index c753e2a..2b9d667 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -1846,10 +1846,10 @@
bool StoringOther = SI->getOperand(0) == OtherVal;
// Only do this if we weren't storing a loaded value.
Value *StoreVal;
- if (StoringOther || SI->getOperand(0) == InitVal)
+ if (StoringOther || SI->getOperand(0) == InitVal) {
StoreVal = ConstantInt::get(Type::getInt1Ty(GV->getContext()),
StoringOther);
- else {
+ } else {
// Otherwise, we are storing a previously loaded copy. To do this,
// change the copy from copying the original value to just copying the
// bool.
@@ -1888,6 +1888,9 @@
UI->eraseFromParent();
}
+ // Retain the name of the old global variable. People who are debugging their
+ // programs may expect these variables to be named the same.
+ NewGV->takeName(GV);
GV->eraseFromParent();
return true;
}