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-rw-r--r--gcc/ChangeLog4
-rw-r--r--gcc/optabs.c8
2 files changed, 7 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e7f08e8..eef09c8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+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
diff --git a/gcc/optabs.c b/gcc/optabs.c
index 581fb9b..0e135af 100644
--- 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);