add a way to disable all builtins, wire it up to opt's -disable-simplifylibcalls flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125978 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 8ccd8e8..e55b4b3 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -532,8 +532,12 @@
PassManager Passes;
// Add an appropriate TargetLibraryInfo pass for the module's triple.
- if (!M->getTargetTriple().empty())
- Passes.add(new TargetLibraryInfo(Triple(M->getTargetTriple())));
+ TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));
+
+ // The -disable-simplify-libcalls flag actually disables all builtin optzns.
+ if (DisableSimplifyLibCalls)
+ TLI->disableAllFunctions();
+ Passes.add(TLI);
// Add an appropriate TargetData instance for this module.
TargetData *TD = 0;