From 4953d2a014d5511473bd3891d564c039a1b78210 Mon Sep 17 00:00:00 2001
From: Matt Turner <mattst88@gmail.com>
Date: Tue, 11 Mar 2025 15:52:45 -0400
Subject: [PATCH] glsl: Use FALLTHROUGH

Reported by clang's `-Wimplicit-fallthrough`.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34014>
---
 src/compiler/glsl/ir.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/compiler/glsl/ir.cpp b/src/compiler/glsl/ir.cpp
index da0e3fc2cfb..f9c779d2cd6 100644
--- a/src/compiler/glsl/ir.cpp
+++ b/src/compiler/glsl/ir.cpp
@@ -22,6 +22,7 @@
  */
 #include <string.h>
 #include "ir.h"
+#include "util/compiler.h"
 #include "util/half_float.h"
 #include "util/bitscan.h"
 #include "compiler/glsl_types.h"
@@ -1793,18 +1794,21 @@ ir_swizzle::init_mask(const unsigned *comp, unsigned count)
       dup_mask |= (1U << comp[3])
 	 & ((1U << comp[0]) | (1U << comp[1]) | (1U << comp[2]));
       this->mask.w = comp[3];
+      FALLTHROUGH;
 
    case 3:
       assert(comp[2] <= 3);
       dup_mask |= (1U << comp[2])
 	 & ((1U << comp[0]) | (1U << comp[1]));
       this->mask.z = comp[2];
+      FALLTHROUGH;
 
    case 2:
       assert(comp[1] <= 3);
       dup_mask |= (1U << comp[1])
 	 & ((1U << comp[0]));
       this->mask.y = comp[1];
+      FALLTHROUGH;
 
    case 1:
       assert(comp[0] <= 3);