[PATCH] D103100: [AIX] Enable stackprotect feature

Jinsong Ji via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu May 27 07:17:00 PDT 2021


jsji added inline comments.


================
Comment at: llvm/lib/Target/PowerPC/PPCISelLowering.cpp:16424
+Value *PPCTargetLowering::getSDagStackGuard(const Module &M) const {
+  if (Subtarget.isAIXABI())
+    return M.getGlobalVariable(AIXSSPCanaryWordName);
----------------
shchenz wrote:
> Is it better to add an assertion here to indicate that the return value will never be nullptr?
We can, but I don't think it is necessary.
We call `M.getOrInsertGlobal` in `insertSSPDeclarations` above, so there should not be nullptr.
Also none of the other targets like x86/arm adding the assert too.



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  https://reviews.llvm.org/D103100/new/

https://reviews.llvm.org/D103100



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