combine.c (simplify_shift_const): Treat shifts by the mode size as undefined.

* combine.c (simplify_shift_const): Treat shifts by the mode size as undefined. From-SVN: r45538

combine.c (simplify_shift_const): Treat shifts by the mode size as undefined.
* combine.c (simplify_shift_const): Treat shifts by the mode size as undefined. From-SVN: r45538
b1c4394d · Richard Sandiford · Richard Sandiford · a27082e0 · b1c4394d · b1c4394d
Commit b1c4394d authored Sep 11, 2001 by Richard Sandiford Committed by Richard Sandiford Sep 11, 2001
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gcc/ChangeLog
+5 -0

gcc/combine.c
+1 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2001-09-11  Richard Sandiford  <rsandifo@redhat.com>
+
+	* combine.c (simplify_shift_const): Treat shifts by the mode
+	size as undefined.
+
 2001-09-11  Neil Booth  <neil@daikokuya.demon.co.uk>

 	* cpphash.h (struct tokenrun): New.

--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -8825,7 +8825,7 @@ simplify_shift_const (x, code, result_mode, varop, input_count)
  /* If we were given an invalid count, don't do anything except exactly
     what was requested.  */

-  if (input_count < 0 || input_count > (int) GET_MODE_BITSIZE (mode))
+  if (input_count < 0 || input_count >= (int) GET_MODE_BITSIZE (mode))
    {
      if (x)
 	return x;