diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index 2e9ac2ca3..19b4ffabf 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -2863,27 +2863,24 @@ static size_t sm6_parser_compute_max_value_count(struct sm6_parser *sm6,
     return value_count;
 }
 
-static size_t sm6_parser_get_value_index(struct sm6_parser *sm6, uint64_t idx)
+static size_t sm6_parser_get_value_index(struct sm6_parser *dxil, uint32_t idx)
 {
     size_t i;
 
-    /* The value relative index is 32 bits. */
-    if (idx > UINT32_MAX)
-        WARN("Ignoring upper 32 bits of relative index.\n");
-    i = (uint32_t)sm6->value_count - (uint32_t)idx;
+    i = (uint32_t)dxil->value_count - idx;
 
-    /* This may underflow to produce a forward reference, but it must not exceed the final value count. */
-    if (i >= sm6->cur_max_value)
+    /* This may underflow to produce a forward reference, but it must not
+     * exceed the final value count. */
+    if (i >= dxil->cur_max_value)
     {
-        WARN("Invalid value index %"PRIx64" at %zu.\n", idx, sm6->value_count);
-        vkd3d_shader_parser_error(&sm6->p, VKD3D_SHADER_ERROR_DXIL_INVALID_OPERAND,
-                "Invalid value relative index %u.", (unsigned int)idx);
+        vkd3d_shader_parser_error(&dxil->p, VKD3D_SHADER_ERROR_DXIL_INVALID_OPERAND,
+                "Invalid value relative index %u.", idx);
         return SIZE_MAX;
     }
-    if (i == sm6->value_count)
+
+    if (i == dxil->value_count)
     {
-        WARN("Invalid value self-reference at %zu.\n", sm6->value_count);
-        vkd3d_shader_parser_error(&sm6->p, VKD3D_SHADER_ERROR_DXIL_INVALID_OPERAND, "Invalid value self-reference.");
+        vkd3d_shader_parser_error(&dxil->p, VKD3D_SHADER_ERROR_DXIL_INVALID_OPERAND, "Invalid value self-reference.");
         return SIZE_MAX;
     }
 
@@ -3094,6 +3091,11 @@ static size_t sm6_parser_get_value_idx_by_ref(struct sm6_parser *sm6, const stru
         return SIZE_MAX;
     val_ref = record->operands[idx++];
 
+    /* Normally only the lower 32 bits are set in the value relative index. */
+    if (val_ref > UINT32_MAX)
+        vkd3d_shader_parser_warning(&sm6->p, VKD3D_SHADER_WARNING_DXIL_IGNORING_OPERANDS,
+                "Ignoring upper 32 bits of DXIL SSA value relative index %"PRIx64".", val_ref);
+
     operand = sm6_parser_get_value_index(sm6, val_ref);
     if (operand == SIZE_MAX)
         return SIZE_MAX;