re PR middle-end/20491 (internal compiler error: in subreg_regno_offset, at rtlanal...

	PR middle-end/20491
	* config/ia64/ia64.c (rtx_needs_barrier): Recurse instead of
	falling through from SUBREG case to REG.

From-SVN: r98225

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f3ba578..1c218f0 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-04-16  Joseph S. Myers  <joseph@codesourcery.com>
+
+       PR middle-end/20491
+       * config/ia64/ia64.c (rtx_needs_barrier): Recurse instead of
+       falling through from SUBREG case to REG.
+
 2005-04-15  Roger Sayle  <roger@eyesopen.com>
 
        * fold-const.c (fold_relational_hi_lo): Delete function and prototype.

diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 55fde10..82dff03 100644 (file)
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -5196,8 +5196,8 @@ rtx_needs_barrier (rtx x, struct reg_flags flags, int pred)
       break;
 
     case SUBREG:
-      x = SUBREG_REG (x);
-      /* FALLTHRU */
+      need_barrier |= rtx_needs_barrier (SUBREG_REG (x), flags, pred);
+      break;
     case REG:
       if (REGNO (x) == AR_UNAT_REGNUM)
        {