From: Eric Anholt <eric@anholt.net>
Date: Sat, 31 Jul 2010 22:47:35 +0000 (-0700)
Subject: glsl2: Do algebraic optimizations after linking as well.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f6b03f323500c71fc20c0d64c618d9aa73ced5b4;p=mesa.git

glsl2: Do algebraic optimizations after linking as well.

Linking brings in inlining of builtins, so we weren't catching the
(rcp(/sqrt(x)) -> rsq(x)) without it.
---

diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index 9b47e4788fc..9d53197fdda 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1289,6 +1289,7 @@ link_shaders(struct gl_shader_program *prog)
 	 progress = do_tree_grafting(ir) || progress;
 	 progress = do_constant_variable_unlinked(ir) || progress;
 	 progress = do_constant_folding(ir) || progress;
+	 progress = do_algebraic(ir) || progress;
 	 progress = do_if_return(ir) || progress;
 #if 0
 	 if (ctx->Shader.EmitNoIfs)