[CodeGen] Port ShadowStackGCLowering to new pass manager
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paperchalice
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arsenm
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Dec 19, 2023
| @@ -170,7 +212,7 @@ Type *ShadowStackGCLowering::GetConcreteStackEntryType(Function &F) { | |||
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| /// doInitialization - If this module uses the GC intrinsics, find them now. If | |||
| /// not, exit fast. | |||
| bool ShadowStackGCLowering::doInitialization(Module &M) { | |||
| bool ShadowStackGCLoweringImpl::doInitialization(Module &M) { | |||
| bool Active = false; | |||
| for (Function &F : M) { | |||
| if (F.hasGC() && F.getGC() == std::string("shadow-stack")) { | |||
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existing issue but this doesn't need the std::string?
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arsenm
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IIUC the new pass system was designed with parallelism. This pass needs to add some global variables into the current module, this is not allowed by [WritingAnLLVMPass](https://llvm.org/docs/WritingAnLLVMPass.html#the-functionpass-class), so convert it to module pass, see FIXME in `GetFrameMap`. Therefore, this will trigger assertion in `CodeGenPassBuilder`: https://github.com/llvm/llvm-project/blob/effd47ed45e3badd756103346a7c3b9e1e939e5e/llvm/include/llvm/CodeGen/CodeGenPassBuilder.h#L200-L207 Will fix it in future.
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IIUC the new pass system was designed with parallelism. This pass needs to add some global variables into the current module, this is not allowed by
WritingAnLLVMPass, so convert it to module pass, see FIXME in
GetFrameMap.Therefore, this will trigger assertion in
CodeGenPassBuilder:llvm-project/llvm/include/llvm/CodeGen/CodeGenPassBuilder.h
Lines 200 to 207 in effd47e