maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

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.

llvm-svn: 175104
This commit is contained in:
Bill Wendling 2013-02-13 23:00:51 +00:00
parent 3c0ed76a9d
commit 7297b864a4
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
llvm/lib/Transforms/IPO/GlobalOpt.cpp
View File

@ -1846,10 +1846,10 @@ static bool TryToShrinkGlobalToBoolean(GlobalVariable *GV, Constant *OtherVal) {
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 @@ static bool TryToShrinkGlobalToBoolean(GlobalVariable *GV, Constant *OtherVal) {
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;
}