[Mesa-dev] [PATCH 10/11] glsl: In lower_jumps.cpp, lower both branches of a conditional.

[Paul Berry]

Previously, lower_jumps.cpp would break out of its loop after lowering
a jump instruction in just the then- or else-branch of a conditional,
and it would fail to lower a jump instruction occurring in the other
branch.

Without this patch, lower_jumps.cpp may require multiple passes in
order lower all jumps, resulting in sub-optimal output.

Fixes unit test test_lower_returns_4.
---
 src/glsl/lower_jumps.cpp |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/src/glsl/lower_jumps.cpp b/src/glsl/lower_jumps.cpp
index 103d64f..2424a54 100644
--- a/src/glsl/lower_jumps.cpp
+++ b/src/glsl/lower_jumps.cpp
@@ -640,7 +640,10 @@ lower_continue:
             block_records[lower].min_strength = strength_always_clears_execute_flag;
             block_records[lower].may_clear_execute_flag = true;
             this->progress = true;
-            break;
+
+            /* Let the loop run again, in case the other branch of the
+             * if needs to be lowered too.
+             */
          }
       }
 
-- 
1.7.5.4