Giovanni Mascellani : vkd3d-shader/ir: Validate LABEL instructions.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: bc9db34cdc8708c028062942a67511ee5d337e73
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/bc9db34cdc8708c028062942a67511...

Author: Giovanni Mascellani 
Date:   Fri Dec 22 15:58:55 2023 +0100

vkd3d-shader/ir: Validate LABEL instructions.

---

libs/vkd3d-shader/ir.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 49d58053..a4bea461 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -2846,6 +2846,16 @@ static void vsir_validate_instruction(struct validation_context *ctx)
                 --ctx->depth;
             break;

+        case VKD3DSIH_LABEL:
+            vsir_validate_cf_type(ctx, instruction, CF_TYPE_BLOCKS);
+            vsir_validate_dst_count(ctx, instruction, 0);
+            vsir_validate_src_count(ctx, instruction, 1);
+            if (instruction->src_count >= 1 && !vsir_register_is_label(&instruction->src[0].reg))
+                validator_error(ctx, VKD3D_SHADER_ERROR_VSIR_INVALID_REGISTER_TYPE,
+                        "Invalid register of type %#x in a LABEL instruction, expected LABEL.",
+                        instruction->src[0].reg.type);
+            break;
+
         default:
             break;
     }