From bf2591a7765edda20f0f18249804e371e3884ac5 Mon Sep 17 00:00:00 2001
From: Ashwin Aji <ashwin.aji@amd.com>
Date: Mon, 22 Jan 2024 23:24:23 -0800
Subject: [PATCH] [ROCm] fixes ambiguous calls to `shfl*` where there is no
 explicit type conversion from `c10::Half` to `__half` (#360)

[ROCm] fixes ambiguous calls to `shfl*` where there is no explicit type
conversion from `c10::Half` to `__half`
---
 csrc/cuda/utils.cuh | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/csrc/cuda/utils.cuh b/csrc/cuda/utils.cuh
index ba4f3a11..747a8e2c 100644
--- a/csrc/cuda/utils.cuh
+++ b/csrc/cuda/utils.cuh
@@ -6,9 +6,10 @@
   AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 #define CHECK_INPUT(x) AT_ASSERTM(x, "Input mismatch")
 
-__device__ __inline__ at::Half
-__shfl_sync(const unsigned mask, const at::Half var, const int srcLane) {
-  return __shfl_sync(mask, var.operator __half(), srcLane);
+__device__ __inline__ at::Half __shfl_up_sync(const unsigned mask,
+                                              const at::Half var,
+                                              const unsigned int delta) {
+  return __shfl_up_sync(mask, var.operator __half(), delta);
 }
 
 __device__ __inline__ at::Half __shfl_down_sync(const unsigned mask,
@@ -17,6 +18,27 @@ __device__ __inline__ at::Half __shfl_down_sync(const unsigned mask,
   return __shfl_down_sync(mask, var.operator __half(), delta);
 }
 
+__device__ __inline__ at::Half __shfl_sync(const unsigned mask,
+                                           const at::Half var,
+                                           const int delta) {
+  return __shfl_sync(mask, var.operator __half(), delta);
+}
+
+__device__ __inline__ at::Half __shfl_up(const at::Half var,
+                                         const unsigned int delta) {
+  return __shfl_up(var.operator __half(), delta);
+}
+
+__device__ __inline__ at::Half __shfl_down(const at::Half var,
+                                           const unsigned int delta) {
+  return __shfl_down(var.operator __half(), delta);
+}
+
+__device__ __inline__ at::Half
+__shfl(const at::Half var, const int delta) {
+  return __shfl(var.operator __half(), delta);
+}
+
 #ifdef USE_ROCM
 __device__ __inline__ at::Half __ldg(const at::Half* ptr) {
   return __ldg(reinterpret_cast<const __half*>(ptr));