OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

glsl2: Add constant propagation.

Browse Source 
Whereas constant folding evaluates constant expressions at rvalue
nodes, constant propagation tracks constant components of vectors
across execution to replace (possibly swizzled) variable dereferences
with constant values, triggering possible constant folding or reduced
variable liveness.
This commit is contained in:
Eric Anholt
2010-08-09 17:03:46 -07:00
parent 81996ae861
commit 8bebbeb7c5
6 changed files with 486 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/glsl/linker.cpp
View File

@@ -1296,6 +1296,7 @@ link_shaders(struct gl_shader_program *prog)
progress = do_dead_code_local(ir) || progress;
progress = do_dead_code(ir) || progress;
progress = do_tree_grafting(ir) || progress;
progress = do_constant_propagation(ir) || progress;
progress = do_constant_variable(ir) || progress;
progress = do_constant_folding(ir) || progress;
progress = do_algebraic(ir) || progress;