From 6588f5a123724a0af811316f8b125e86d6306267 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Sch=C3=BCrmann?= <daniel@schuermann.dev>
Date: Fri, 24 Nov 2023 16:42:32 +0100
Subject: [PATCH] spirv: implement SPV_KHR_maximal_reconvergence

Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27277>
---
 src/compiler/shader_info.h        | 5 +++++
 src/compiler/spirv/spirv_to_nir.c | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/src/compiler/shader_info.h b/src/compiler/shader_info.h
index bb3f1f0334c..61a6affedc6 100644
--- a/src/compiler/shader_info.h
+++ b/src/compiler/shader_info.h
@@ -347,6 +347,11 @@ typedef struct shader_info {
     */
    bool uses_printf:1;
 
+   /**
+    * VK_KHR_shader_maximal_reconvergence
+    */
+   bool maximally_reconverges:1;
+
    /**
      * Set if this shader uses legacy (DX9 or ARB assembly) math rules.
      *
diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c
index 3b4be6b19e5..29358e2e529 100644
--- a/src/compiler/spirv/spirv_to_nir.c
+++ b/src/compiler/spirv/spirv_to_nir.c
@@ -5521,6 +5521,10 @@ vtn_handle_execution_mode(struct vtn_builder *b, struct vtn_value *entry_point,
       break;
    }
 
+   case SpvExecutionModeMaximallyReconvergesKHR:
+      b->shader->info.maximally_reconverges = true;
+      break;
+
    case SpvExecutionModeLocalSizeId:
    case SpvExecutionModeLocalSizeHintId:
    case SpvExecutionModeSubgroupsPerWorkgroupId: