Fix a bugpoint crash that JeffC noticed, looking like this:
*** Attempting to perform final cleanups: Final cleanups failed. Sorry. :( Ple
ase report a bug!
<llc>llc.exe: bytecode didn't read correctly.
llc.exe: bytecode didn't read correctly.
<crash>
Assertion failed: M && "You can't write a null module!!", file c:\llvm\lib\bytec
ode\writer\writer.cpp, line 1094
The fact that llc bombed (in this case) is ok, but bugpoint shouldn't crash after this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20285 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/ExtractFunction.cpp b/tools/bugpoint/ExtractFunction.cpp
index 078c7ba..0eecc49 100644
--- a/tools/bugpoint/ExtractFunction.cpp
+++ b/tools/bugpoint/ExtractFunction.cpp
@@ -98,7 +98,7 @@
/// performFinalCleanups - This method clones the current Program and performs
/// a series of cleanups intended to get rid of extra cruft on the module
-/// before handing it to the user...
+/// before handing it to the user.
///
Module *BugDriver::performFinalCleanups(Module *M, bool MayModifySemantics) {
// Make all functions external, so GlobalDCE doesn't delete them...
@@ -118,6 +118,7 @@
Module *New = runPassesOn(M, CleanupPasses);
if (New == 0) {
std::cerr << "Final cleanups failed. Sorry. :( Please report a bug!\n";
+ return M;
}
delete M;
return New;