[Bug target/47744] [x32] ICE: in reload_cse_simplify_operands, at postreload.c:403

["hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47744

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ubizjak at gmail dot com

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2011-02-15 06:26:32 UTC ---
A kludge:

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 98fa75d..290907d 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -11735,6 +11735,40 @@ ix86_decompose_address (rtx addr, struct ix86_address
*
out)
   if (disp == const0_rtx && (base || index))
     disp = NULL_RTX;

+  if (TARGET_X32
+      && base
+      && GET_MODE (base) == ptr_mode
+      && GET_CODE (base) == SUBREG
+      && (disp == NULL_RTX
+      || disp == const0_rtx
+      || CONST_INT_P (disp))
+      && GET_CODE (base_reg) == PLUS)
+    {
+      rtx op0 = XEXP (base_reg, 0);
+      rtx op1 = XEXP (base_reg, 1);
+      rtx c;
+      if (REG_P (op0) && CONST_INT_P (op1))
+    {
+      base_reg = op0;
+      c = op1;
+    }
+      else if (REG_P (op1) && CONST_INT_P (op0))
+    {
+      base_reg = op1;
+      c = op0;
+    }
+      else
+    return 0;
+
+      if (disp == NULL_RTX
+      || disp == const0_rtx)
+    disp = c;
+      else
+    disp = GEN_INT (INTVAL (disp) + INTVAL (c));
+
+      base = gen_rtx_REG (ptr_mode, REGNO (base_reg));
+    }
+
   /* Allow arg pointer and stack pointer as index if there is not scaling.  */
   if (base_reg && index_reg && scale == 1
       && (index_reg == arg_pointer_rtx