From 9d3b144018fb3e1faca3f664cdf311b0003ec121 Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Tue, 16 Apr 2024 11:02:38 -0500
Subject: [PATCH] nir: Add a nir_intrinsic_use for unit tests

Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28793>
---
 src/compiler/nir/nir_intrinsics.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py
index 5072ade0449..2f9f13dbb58 100644
--- a/src/compiler/nir/nir_intrinsics.py
+++ b/src/compiler/nir/nir_intrinsics.py
@@ -324,6 +324,11 @@ index("unsigned", "repeat_count")
 
 intrinsic("nop", flags=[CAN_ELIMINATE])
 
+# Uses a value and cannot be eliminated.
+#
+# This is helpful when writing unit tests
+intrinsic("use", src_comp=[0], flags=[])
+
 intrinsic("convert_alu_types", dest_comp=0, src_comp=[0],
           indices=[SRC_TYPE, DEST_TYPE, ROUNDING_MODE, SATURATE],
           flags=[CAN_ELIMINATE, CAN_REORDER])