diff options
Diffstat (limited to 'llvm/lib/IR')
| -rw-r--r-- | llvm/lib/IR/Attributes.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/IR/Attributes.cpp b/llvm/lib/IR/Attributes.cpp index 9726397..542b470 100644 --- a/llvm/lib/IR/Attributes.cpp +++ b/llvm/lib/IR/Attributes.cpp @@ -1921,6 +1921,12 @@ static void setOR(Function &Caller, const Function &Callee) { /// If the inlined function had a higher stack protection level than the /// calling function, then bump up the caller's stack protection level. static void adjustCallerSSPLevel(Function &Caller, const Function &Callee) { + // If the calling function has *no* stack protection level (e.g. it was built + // with Clang's -fno-stack-protector or no_stack_protector attribute), don't + // change it as that could change the program's semantics. + if (!Caller.hasStackProtectorFnAttr()) + return; + // If upgrading the SSP attribute, clear out the old SSP Attributes first. // Having multiple SSP attributes doesn't actually hurt, but it adds useless // clutter to the IR. |