llvm-project

75432ce3 - [LowerAllowCheck] Add llvm.allow.sanitize.* intrinsics (#172029)

[LowerAllowCheck] Add llvm.allow.sanitize.* intrinsics (#172029) Add new intrinsics: - llvm.allow.sanitize.address - llvm.allow.sanitize.thread - llvm.allow.sanitize.memory - llvm.allow.sanitize.hwaddress These intrinsics return true if the corresponding sanitizer is enabled for the function, and false otherwise. They are lowered by LowerAllowCheckPass to constant booleans based on the corresponding sanitize_* function attributes. LowerAllowCheckPass is now "required" to run on functions with optnone to ensure correct lowering at O0. The LowerAllowCheckPass already performs similar duties for @llvm.allow.runtime.check and @llvm.allow.ubsan.check, although with subtly different semantics (based on profiles and/or sampling). In this case, we want to make the true/false decision based on if any one of address/memory/thread sanitization is enabled.