* optabs.c (expand_twoval_binop): Avoid undefined behaviour.

From-SVN: r43403

* optabs.c (expand_twoval_binop): Avoid undefined behaviour.
From-SVN: r43403
76791f3d · Jan Hubicka · Jan Hubicka · f2541106 · 76791f3d · 76791f3d
Commit 76791f3d authored Jun 15, 2001 by Jan Hubicka Committed by Jan Hubicka Jun 15, 2001
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gcc/ChangeLog
+4 -0

gcc/optabs.c
+3 -5

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+Fri Jun 15 19:35:38 CEST 2001 Jan Hubicka  <jh@suse.cz>
+
+	* optabs.c (expand_twoval_binop): Avoid undefined behaviour.
+
 2001-06-15  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

 	* doc/install.texi (Specific, alpha*-*-*): Fixed Tru64 UNIX

--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -1992,12 +1992,10 @@ expand_twoval_binop (binoptab, op0, op1, targ0, targ1, unsignedp)
 	    {
 	      register rtx t0 = gen_reg_rtx (wider_mode);
 	      register rtx t1 = gen_reg_rtx (wider_mode);
+	      rtx cop0 = convert_modes (wider_mode, mode, op0, unsignedp);
+	      rtx cop1 = convert_modes (wider_mode, mode, op1, unsignedp);

-	      if (expand_twoval_binop (binoptab,
-				       convert_modes (wider_mode, mode, op0,
-						      unsignedp),
-				       convert_modes (wider_mode, mode, op1,
-						      unsignedp),
+	      if (expand_twoval_binop (binoptab, cop0, cop1,
 				       t0, t1, unsignedp))
 		{
 		  convert_move (targ0, t0, unsignedp);