Ensure non-null ProfileSummaryInfo passed to ModuleSummaryIndex builder

This fixes a ubsan bot failure after r302597, which made getProfileCount
non-static, but ended up invoking it on a null ProfileSummaryInfo object
in some cases from buildModuleSummaryIndex.

Most testing passed because the non-static getProfileCount currently
doesn't access any member variables, but I found this when testing a
follow on patch (D32877) that adds a member variable access.

llvm-svn: 302705

1 files changed, 3 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp b/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
index d3a3c24ce7b..68884ce25bf 100644
--- a/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
+++ b/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
@@ -16,6 +16,7 @@
 
 #include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/ModuleSummaryAnalysis.h"
+#include "llvm/Analysis/ProfileSummaryInfo.h"
 #include "llvm/Analysis/TypeMetadataUtils.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/IR/Constants.h"
@@ -320,7 +321,8 @@ void splitAndWriteThinLTOBitcode(
 
 
   // FIXME: Try to re-use BSI and PFI from the original module here.
-  ModuleSummaryIndex Index = buildModuleSummaryIndex(M, nullptr, nullptr);
+  ProfileSummaryInfo PSI(M);
+  ModuleSummaryIndex Index = buildModuleSummaryIndex(M, nullptr, &PSI);
 
   SmallVector<char, 0> Buffer;