* var-tracking.c (use_narrower_mode_test, use_narrower_mode): New

[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6b1fcba..89aaa5a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
 2010-03-30  Jakub Jelinek  <jakub@redhat.com>
 
+       * var-tracking.c (use_narrower_mode_test, use_narrower_mode): New
+       functions.
+       (adjust_mems): Replace narrowing SUBREG of expression containing
+       just PLUS, MINUS, MULT and ASHIFT of registers and constants
+       with operations in the narrower mode.
+
        PR debug/43593
        * var-tracking.c (dataflow_set_clear_at_call): Invalidate
        just regs_invalidated_by_call instead all call_used_reg_set