combine.c (cant_combine_insn_p): Get around SUBREGs when determining hardreg<->reg...

	* combine.c (cant_combine_insn_p): Get around SUBREGs when determining
	hardreg<->reg moves.

From-SVN: r38285

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ec345e5..bf665e4 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Fri Dec 15 15:32:16 MET 2000  Jan Hubicka  <jh@suse.cz>
+
+       * combine.c (cant_combine_insn_p): Get around SUBREGs when determining
+       hardreg<->reg moves.
+
 Fri Dec 15 14:48:37 MET 2000  Jan Hubicka  <jh@suse.cz>
 
        * genrecog.c (add_to_sequence): Remove special case for

diff --git a/gcc/combine.c b/gcc/combine.c
index 7fa2379..5240e88 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -1465,6 +1465,10 @@ cant_combine_insn_p (insn)
     return 0;
   src = SET_SRC (set);
   dest = SET_DEST (set);
+  if (GET_CODE (src) == SUBREG)
+    src = SUBREG_REG (src);
+  if (GET_CODE (dest) == SUBREG)
+    dest = SUBREG_REG (dest);
   if (REG_P (src) && REG_P (dest)
       && ((REGNO (src) < FIRST_PSEUDO_REGISTER
           && ! fixed_regs[REGNO (src)])