From 1595c79d9c60d8cc03763e64285b691d6748be95 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Tue, 18 Oct 2011 15:04:37 -0700 Subject: [PATCH] glsl: Short-circuit lower_if_to_cond_assign when MaxIfDepth is UINT_MAX. Setting MaxIfDepth to UINT_MAX effectively means "don't lower anything." Explicitly checking for this common case allows us to avoid walking the IR, computing nesting levels, and so on. Signed-off-by: Kenneth Graunke Reviewed-by: Bryan Cain --- src/glsl/lower_if_to_cond_assign.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/glsl/lower_if_to_cond_assign.cpp b/src/glsl/lower_if_to_cond_assign.cpp index 7b89a1539ce..2c5d5612d0d 100644 --- a/src/glsl/lower_if_to_cond_assign.cpp +++ b/src/glsl/lower_if_to_cond_assign.cpp @@ -79,6 +79,9 @@ public: bool lower_if_to_cond_assign(exec_list *instructions, unsigned max_depth) { + if (max_depth == UINT_MAX) + return false; + ir_if_to_cond_assign_visitor v(max_depth); visit_list_elements(&v, instructions); -- 2.30.2