From cc8a55802d2b7fd7a73a46857dd72152be2380d5 Mon Sep 17 00:00:00 2001
From: Sebastian Neubauer <Sebastian.Neubauer@amd.com>
Date: Wed, 4 May 2022 15:50:16 +0200
Subject: [PATCH] rocclr: Re-enable support for gfx8
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The patch has been floating around for a while and I think it’s applied
for some distributions.

I tested OpenCL on gfx8 and gfx10 and it's both working with this patch.
---
 pkgs/development/libraries/rocclr/default.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pkgs/development/libraries/rocclr/default.nix b/pkgs/development/libraries/rocclr/default.nix
index fb847b83fe9..8afb0d04418 100644
--- a/pkgs/development/libraries/rocclr/default.nix
+++ b/pkgs/development/libraries/rocclr/default.nix
@@ -1,5 +1,6 @@
 { lib, stdenv
 , fetchFromGitHub
+, fetchpatch
 , writeScript
 , rocm-comgr
 }:
@@ -15,6 +16,16 @@ stdenv.mkDerivation rec {
     hash = "sha256-SFWEGKffhuiTE7ICbkElVV5cldXu4Xbwvjb6LiNmijA=";
   };
 
+  patches = [
+    # Enable support for gfx8 again
+    # See the upstream issue: https://github.com/RadeonOpenCompute/ROCm/issues/1659
+    # And the arch patch: https://github.com/rocm-arch/rocm-arch/pull/742
+    (fetchpatch {
+      url = "https://raw.githubusercontent.com/John-Gee/rocm-arch/d6812d308fee3caf2b6bb01b4d19fe03a6a0e3bd/rocm-opencl-runtime/enable-gfx800.patch";
+      hash = "sha256-59jFDIIsTTZcNns9RyMVWPRUggn/bSlAGrky4quu8B4=";
+    })
+  ];
+
   prePatch = ''
     substituteInPlace device/comgrctx.cpp \
       --replace "libamd_comgr.so" "${rocm-comgr}/lib/libamd_comgr.so"