2012-02-27 Stuart Henderson <shenders@gcc.gnu.org>

    * ifcvt.c (noce_get_condition): Check condition variable is not
    small_register_classes_for_mode_p before accepting.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184599 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 54e1128..abc17a1 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-27  Stuart Henderson  <shenders@gcc.gnu.org>
+
+       * ifcvt.c (noce_get_condition): Check condition variable is not
+       small_register_classes_for_mode_p before accepting.
+
 2012-02-27  Uros Bizjak  <ubizjak@gmail.com>
 
        * config/i386/i386.md (*movabs<mode>_1): Fix operand 1 constraints.

diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c
index 8d81c89..e4e13ab 100644 (file)
--- a/gcc/ifcvt.c
+++ b/gcc/ifcvt.c
@@ -2295,7 +2295,9 @@ noce_get_condition (rtx jump, rtx *earliest, bool then_else_reversed)
 
   cond = XEXP (SET_SRC (set), 0);
   tmp = XEXP (cond, 0);
-  if (REG_P (tmp) && GET_MODE_CLASS (GET_MODE (tmp)) == MODE_INT)
+  if (REG_P (tmp) && GET_MODE_CLASS (GET_MODE (tmp)) == MODE_INT
+      && (GET_MODE (tmp) != BImode
+          || !targetm.small_register_classes_for_mode_p (BImode)))
     {
       *earliest = jump;