emit-rtl.c (set_decl_incoming_rtl): Check whether the 0th element of PARALLEL is...

[thirdparty/gcc.git] / gcc / emit-rtl.c

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index 76f292ce4b9bf5f7e2c58ae2b2268093c03b8ca8..2a142871445ca6d86b075e59c8fcf44d318524b3 100644 (file)
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -852,8 +852,16 @@ set_decl_incoming_rtl (tree t, rtx x)
     }
   if (GET_CODE (x) == PARALLEL)
     {
-      int i;
-      for (i = 0; i < XVECLEN (x, 0); i++)
+      int i, start;
+
+      /* Check for a NULL entry, used to indicate that the parameter goes
+        both on the stack and in registers.  */
+      if (XEXP (XVECEXP (x, 0, 0), 0))
+       start = 0;
+      else
+       start = 1;
+
+      for (i = start; i < XVECLEN (x, 0); i++)
        {
          rtx y = XVECEXP (x, 0, i);
          if (REG_P (XEXP (y, 0)))