Fix multiple test failures with staging compiler. (#3103)

* fix sync issues with staging compiler

* fix codegen

* use separate sync for gfx11

[ROCm/composable_kernel commit: 331273b474]

codegen/test/rtc/include/rtc/kernel.hpp

@@ -52,7 +52,7 @@ struct kernel
     template <class... Ts>
     auto launch(hipStream_t stream, std::size_t global, std::size_t local, Ts... zs) const
     {
-        return [=](auto&&... xs) {
+        return [=, this](auto&&... xs) {
             launch(stream, global, local, std::vector<kernel_argument>{xs...}, zs...);
         };
     }

include/ck/utility/synchronization.hpp

@@ -16,10 +16,17 @@ __device__ void llvm_amdgcn_s_wait_dscnt(short cnt) __asm("llvm.amdgcn.s.wait.ds
 __device__ void block_sync_lds()
 {
 #if CK_EXPERIMENTAL_BLOCK_SYNC_LDS_WITHOUT_SYNC_VMEM
-#ifdef __gfx12__
+#if defined(__gfx12__)
     llvm_amdgcn_s_wait_dscnt(0);
     asm volatile("s_barrier_signal -1\n\t"
                  "s_barrier_wait -1");
+#elif defined(__gfx11__)
+    // asm volatile("\
+    // s_waitcnt lgkmcnt(0) \n \
+    // s_barrier \
+    // " ::);
+    __builtin_amdgcn_s_waitcnt(0xfc07);
+    __builtin_amdgcn_s_barrier();
 #else
     // asm volatile("\
     // s_waitcnt lgkmcnt(0) \n \