From 205cb8a1396b446646d6edaee6a96533da8e562d Mon Sep 17 00:00:00 2001
From: Matt Turner <mattst88@gmail.com>
Date: Thu, 2 Jan 2020 14:57:56 -0800
Subject: intel/compiler: Handle invalid inputs to brw_reg_type_to_*()

Necessary to handle these cases when we test fuzzed instructions.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/2635>
---
 src/intel/compiler/brw_reg_type.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/intel/compiler/brw_reg_type.c b/src/intel/compiler/brw_reg_type.c
index 7a42f2ffbe6..c720542e3a0 100644
--- a/src/intel/compiler/brw_reg_type.c
+++ b/src/intel/compiler/brw_reg_type.c
@@ -479,6 +479,9 @@ brw_reg_type_to_size(enum brw_reg_type type)
       [BRW_REGISTER_TYPE_V]  = 2,
       [BRW_REGISTER_TYPE_UV] = 2,
    };
+   if (type >= ARRAY_SIZE(type_size))
+      return -1;
+
    return type_size[type];
 }
 
@@ -509,6 +512,9 @@ brw_reg_type_to_letters(enum brw_reg_type type)
       [BRW_REGISTER_TYPE_V]  = "V",
       [BRW_REGISTER_TYPE_UV] = "UV",
    };
+   if (type >= ARRAY_SIZE(letters))
+      return "INVALID";
+
    assert(type < ARRAY_SIZE(letters));
    return letters[type];
 }
-- 
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