Revert "[IR] add fn attr for no_stack_protector; prevent inlining on mismatch"

This reverts commit b7926ce6d7a83cdf70c68d82bc3389c04009b841.

Going with a simpler approach.

1 files changed, 0 insertions, 16 deletions

diff --git a/llvm/lib/Transforms/Utils/InlineFunction.cpp b/llvm/lib/Transforms/Utils/InlineFunction.cpp
index 54c5825..05e6929 100644
--- a/llvm/lib/Transforms/Utils/InlineFunction.cpp
+++ b/llvm/lib/Transforms/Utils/InlineFunction.cpp
@@ -1667,22 +1667,6 @@ llvm::InlineResult llvm::InlineFunction(CallBase &CB, InlineFunctionInfo &IFI,
       return InlineResult::failure("incompatible GC");
   }
 
-  // Inlining a function that explicitly should not have a stack protector may
-  // break the code if inlined into a function that does have a stack
-  // protector.
-  if (LLVM_UNLIKELY(Caller->hasFnAttribute(Attribute::NoStackProtect)))
-    if (CalledFunc->hasFnAttribute(Attribute::StackProtect) ||
-        CalledFunc->hasFnAttribute(Attribute::StackProtectStrong) ||
-        CalledFunc->hasFnAttribute(Attribute::StackProtectReq))
-      return InlineResult::failure(
-          "stack protected callee but caller requested no stack protector");
-  if (LLVM_UNLIKELY(CalledFunc->hasFnAttribute(Attribute::NoStackProtect)))
-    if (Caller->hasFnAttribute(Attribute::StackProtect) ||
-        Caller->hasFnAttribute(Attribute::StackProtectStrong) ||
-        Caller->hasFnAttribute(Attribute::StackProtectReq))
-      return InlineResult::failure(
-          "stack protected caller but callee requested no stack protector");
-
   // Get the personality function from the callee if it contains a landing pad.
   Constant *CalledPersonality =
       CalledFunc->hasPersonalityFn()