PATCH [1/n]: Prepare x32: PR middle-end/47364: internal compiler error: in emit_move_insn, at expr.c:3355

[H.J. Lu]

Hi,

expand_builtin_strlen has

src_reg = gen_reg_rtx (Pmode);
...
pat = expand_expr (src, src_reg, ptr_mode, EXPAND_NORMAL);
if (pat != src_reg)
  emit_move_insn (src_reg, pat);

But src_reg may be in ptr_mode, wich may not be the same as Pmode.
This patch checks it.  OK for trunk?

Thanks.


H.J.
---
2011-06-11  H.J. Lu  <hongjiu...@intel.com>

        PR middle-end/47364
        * builtins.c (expand_builtin_strlen): Properly handle target
        not in Pmode.

diff --git a/gcc/builtins.c b/gcc/builtins.c
index 7b24a0c..4e2cf31 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -2941,7 +2941,11 @@ expand_builtin_strlen (tree exp, rtx target,
       start_sequence ();
       pat = expand_expr (src, src_reg, ptr_mode, EXPAND_NORMAL);
       if (pat != src_reg)
-       emit_move_insn (src_reg, pat);
+       {
+         if (GET_MODE (pat) != Pmode)
+           pat = convert_to_mode (Pmode, pat, 1);
+         emit_move_insn (src_reg, pat);
+       }
       pat = get_insns ();
       end_sequence ();