[clang] [Clang][RISCV] Support -fcf-protection=return for RISC-V (PR #112477)

[Jesse Huang via cfe-commits]

================
@@ -899,6 +899,11 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, 
QualType RetTy,
   if (CodeGenOpts.PointerAuth.IndirectGotos)
     Fn->addFnAttr("ptrauth-indirect-gotos");
 
+  // Add return control flow integrity attributes for RISCV.
+  if (CodeGenOpts.CFProtectionReturn &&
----------------
jaidTw wrote:

`cf-protection-return` on RISC-V could be controlled at a per-function 
granularity (i.e. use function attributes to suppress the instruction 
generation for some functions), so we still need a function attribute to tag it.
I moved it to `setTargetAttributes` for RISC-V, thanks for the advice.

https://github.com/llvm/llvm-project/pull/112477
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits