(expand_call): Make sure valreg is at least a full word.

From-SVN: r10509

diff --git a/gcc/calls.c b/gcc/calls.c
index 4abd2c0..536f928 100644 (file)
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -2058,6 +2058,13 @@ expand_call (exp, target, ignore)
          preserve_temp_slots (target);
        }
 
+      /* This code assumes valreg is at least a full word.  If it isn't,
+        copy it into a new pseudo which is a full word.  */
+      if (GET_MODE (valreg) != BLKmode
+         && GET_MODE_SIZE (GET_MODE (valreg)) < UNITS_PER_WORD)
+       valreg = convert_to_mode (SImode, valreg,
+                                 TREE_UNSIGNED (TREE_TYPE (exp)));
+
       /* Structures whose size is not a multiple of a word are aligned
         to the least significant byte (to the right).  On a BYTES_BIG_ENDIAN
         machine, this means we must skip the empty high order bytes when