Check SUBREG in prepare_call_arguments.

2011-03-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR debug/48160
	* var-tracking.c (prepare_call_arguments): Check SUBREG.

From-SVN: r171108

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7d028f7fae824b2d6e4fa93047400cff1923208f..887e014cbba76112f80fb2d61b387e38af6f8888 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2011-03-17  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR debug/48160
+       * var-tracking.c (prepare_call_arguments): Check SUBREG.
+
 2011-03-17  H.J. Lu  <hongjiu.lu@intel.com>
 
        PR target/48171

diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c
index aab98331df31bd6ea2056835c8937da0b269c8e9..7c4c2c57b362d26a719e70c3f9e54d6f4e59f152 100644 (file)
--- a/gcc/var-tracking.c
+++ b/gcc/var-tracking.c
@@ -5770,7 +5770,11 @@ prepare_call_arguments (basic_block bb, rtx insn)
 
                    /* Try harder, when passing address of a constant
                       pool integer it can be easily read back.  */
-                   val = CSELIB_VAL_PTR (XEXP (item, 1));
+                   item = XEXP (item, 1);
+                   if (GET_CODE (item) == SUBREG)
+                     item = SUBREG_REG (item);
+                   gcc_assert (GET_CODE (item) == VALUE);
+                   val = CSELIB_VAL_PTR (item);
                    for (l = val->locs; l; l = l->next)
                      if (GET_CODE (l->loc) == SYMBOL_REF
                          && TREE_CONSTANT_POOL_ADDRESS_P (l->loc)