Add pass to remove dead members. (#2379)
Add a pass that looks for members of structs whose values do not affects
the output of the shader. Those members are then removed and just
treated like padding in the struct.
diff --git a/include/spirv-tools/optimizer.hpp b/include/spirv-tools/optimizer.hpp
index a496f9d..e2d5e46 100644
--- a/include/spirv-tools/optimizer.hpp
+++ b/include/spirv-tools/optimizer.hpp
@@ -226,6 +226,11 @@
// functions are not needed because they will never be called.
Optimizer::PassToken CreateEliminateDeadFunctionsPass();
+// Creates an eliminate-dead-members pass.
+// An eliminate-dead-members pass will remove all unused members of structures.
+// This will not affect the data layout of the remaining members.
+Optimizer::PassToken CreateEliminateDeadMembersPass();
+
// Creates a set-spec-constant-default-value pass from a mapping from spec-ids
// to the default values in the form of string.
// A set-spec-constant-default-value pass sets the default values for the