From 4c94467e5fab6dc15ab41bcd99e4afeedd8f8b0c Mon Sep 17 00:00:00 2001
From: Gert Wollny <gert.wollny@collabora.com>
Date: Mon, 11 Aug 2025 21:41:05 +0200
Subject: [PATCH] r600/sfn: add an unreachable if the creation of a fp64 group
 fails

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36860>
---
 src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp b/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp
index 5aa5767d796..5fda5ada7da 100644
--- a/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp
@@ -2201,7 +2201,8 @@ emit_alu_fma_64bit(const nir_alu_instr& alu, EAluOp opcode, Shader& shader)
                         value_factory.src64(alu.src[1], 0, chan),
                         value_factory.src64(alu.src[2], 0, chan),
                         i < 2 ? AluInstr::write : AluInstr::empty);
-      group->add_instruction(ir);
+      if (!group->add_instruction(ir))
+         UNREACHABLE("Unable to emit group, likely because of a readport conflict\n");
    }
    shader.emit_instruction(group);
    return true;