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

H.J. Lu hongjiu.lu@intel.com
Sat Jun 11 15:37:00 GMT 2011


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.lu@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 ();
 



More information about the Gcc-patches mailing list