Emit hidden hostcall argument for sanitized kernels

this patch - https://reviews.llvm.org/D110337 changes the way how hostcall
hidden argument is emitted for printf, but the sanitized kernels also use
hostcall buffer to report a error for invalid memory access, which is not
handled by the above patch and it leads to vdi runtime error:

Device::callbackQueue aborting with error : HSA_STATUS_ERROR_MEMORY_FAULT:
Agent attempted to access an inaccessible address. code: 0x2b

Patch by: Praveen Velliengiri

Reviewed by: Yaxun Liu, Matt Arsenault

Differential Revision: https://reviews.llvm.org/D112820

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index a4c60f0c50c2..c28c2e2e85d8 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -565,6 +565,7 @@ void CodeGenModule::Release() {
         "__amdgpu_device_library_preserve_asan_functions_ptr", nullptr,
         llvm::GlobalVariable::NotThreadLocal);
     addCompilerUsedGlobal(Var);
+    getModule().addModuleFlag(llvm::Module::Override, "amdgpu_hostcall", 1);
   }
 
   emitLLVMUsed();