[Mesa-dev] [PATCH] glsl: fix key used for hashing switch statement cases

[Tapani Pälli]

Implementation previously used case value itself as the key, however
afterhash implementation change by ee02a5e we cannot use 0 as key.
Patch uses _mesa_hash_data to formulate a suitable key for this hash.

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97309
---
 src/compiler/glsl/ast_to_hir.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index e03a6e3..53fc4d6 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -6180,9 +6180,11 @@ ast_case_label::hir(exec_list *instructions,
          /* Stuff a dummy value in to allow processing to continue. */
          label_const = new(ctx) ir_constant(0);
       } else {
+         unsigned hash_key = _mesa_hash_data(&label_const->value.u[0],
+                                             sizeof(unsigned));
          ast_expression *previous_label = (ast_expression *)
          hash_table_find(state->switch_state.labels_ht,
-                         (void *)(uintptr_t)label_const->value.u[0]);
+                         (void *)(uintptr_t)hash_key);
 
          if (previous_label) {
             YYLTYPE loc = this->test_value->get_location();
@@ -6193,7 +6195,7 @@ ast_case_label::hir(exec_list *instructions,
          } else {
             hash_table_insert(state->switch_state.labels_ht,
                               this->test_value,
-                              (void *)(uintptr_t)label_const->value.u[0]);
+                              (void *)(uintptr_t)hash_key);
          }
       }
 
-- 
2.5.5