From 7ba0c446074b0df1000c45e4253264ff9e6683a9 Mon Sep 17 00:00:00 2001
From: Emma Anholt <emma@anholt.net>
Date: Fri, 15 Apr 2022 11:17:50 -0700
Subject: [PATCH] turnip: Add nir_opt_conditional_discard.

We can easily do discard_if in the backend without control flow, but it
wasn't done in ir3 because the GL frontend already did it for us.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15982>
---
 src/freedreno/vulkan/tu_shader.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/freedreno/vulkan/tu_shader.c b/src/freedreno/vulkan/tu_shader.c
index 2b11c78fa4d..1af0dbaa959 100644
--- a/src/freedreno/vulkan/tu_shader.c
+++ b/src/freedreno/vulkan/tu_shader.c
@@ -132,6 +132,8 @@ tu_spirv_to_nir(struct tu_device *dev,
 
    ir3_optimize_loop(dev->compiler, nir);
 
+   NIR_PASS_V(nir, nir_opt_conditional_discard);
+
    return nir;
 }