diff options
-rw-r--r-- | ir_copy_propagation.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/ir_copy_propagation.cpp b/ir_copy_propagation.cpp index 1f8c3590c2..018a30d77c 100644 --- a/ir_copy_propagation.cpp +++ b/ir_copy_propagation.cpp @@ -22,9 +22,14 @@ */ /** - * \file ir_dead_code.cpp + * \file ir_copy_propagation.cpp * - * Eliminates dead assignments and variable declarations from the code. + * Moves usage of recently-copied variables to the previous copy of + * the variable within basic blocks. + * + * This should reduce the number of MOV instructions in the generated + * programs unless copy propagation is also done on the LIR, and may + * help anyway by triggering other optimizations that live in the HIR. */ #include <stdio.h> |