From fe690587bedb23dec2753549d4216059a7f894a1 Mon Sep 17 00:00:00 2001
From: Sven van Haastregt <sven.vanhaastregt@arm.com>
Date: Wed, 9 Feb 2022 10:47:45 +0000
Subject: [PATCH] [OpenCL] Fix atomic_fetch_add/sub with half type

An error in the tablegen description affects the declarations
provided by `-fdeclare-opencl-builtins` for `atomic_fetch_add` and
`atomic_fetch_sub`.

The atomic argument should be an atomic_half, not an atomic_float.
---
 clang/lib/Sema/OpenCLBuiltins.td | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/clang/lib/Sema/OpenCLBuiltins.td b/clang/lib/Sema/OpenCLBuiltins.td
index 08f8630..60a05f9 100644
--- a/clang/lib/Sema/OpenCLBuiltins.td
+++ b/clang/lib/Sema/OpenCLBuiltins.td
@@ -1138,7 +1138,7 @@ let MinVersion = CL20 in {
   foreach ModOp = ["add", "sub"] in {
     let Extension = FuncExtFloatAtomicsFp16GlobalAdd in {
       defm : BuiltinAtomicExplicit<"atomic_fetch_" # ModOp,
-          [Half, PointerType<VolatileType<AtomicFloat>, GlobalAS>, Half]>;
+          [Half, PointerType<VolatileType<AtomicHalf>, GlobalAS>, Half]>;
     }
     let Extension = FuncExtFloatAtomicsFp32GlobalAdd in {
       defm : BuiltinAtomicExplicit<"atomic_fetch_" # ModOp,
@@ -1150,7 +1150,7 @@ let MinVersion = CL20 in {
     }
     let Extension = FuncExtFloatAtomicsFp16LocalAdd in {
       defm : BuiltinAtomicExplicit<"atomic_fetch_" # ModOp,
-          [Half, PointerType<VolatileType<AtomicFloat>, LocalAS>, Half]>;
+          [Half, PointerType<VolatileType<AtomicHalf>, LocalAS>, Half]>;
     }
     let Extension = FuncExtFloatAtomicsFp32LocalAdd in {
       defm : BuiltinAtomicExplicit<"atomic_fetch_" # ModOp,
@@ -1162,7 +1162,7 @@ let MinVersion = CL20 in {
     }
     let Extension = FuncExtFloatAtomicsFp16GenericAdd in {
       defm : BuiltinAtomicExplicit<"atomic_fetch_" # ModOp,
-          [Half, PointerType<VolatileType<AtomicFloat>, GenericAS>, Half]>;
+          [Half, PointerType<VolatileType<AtomicHalf>, GenericAS>, Half]>;
     }
     let Extension = FuncExtFloatAtomicsFp32GenericAdd in {
       defm : BuiltinAtomicExplicit<"atomic_fetch_" # ModOp,
-- 
2.7.4