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combine.c (simplify_shift_const): Bound shift count when combining shifts.

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* combine.c (simplify_shift_const): Bound shift count when
        combining shifts.

From-SVN: r35739
This commit is contained in:
Richard Henderson 2000-08-15 23:22:20 -07:00 • committed by Richard Henderson
parent 8e7c93fe34
commit 3e626beb95
2 changed files with 10 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-08-15 Richard Henderson <rth@cygnus.com>
* combine.c (simplify_shift_const): Bound shift count when
combining shifts.
Tue Aug 15 17:33:05 2000 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* calls.c (ECF_SP_DEPRESSED): New macro.

5
gcc/combine.c
View file

@ -9149,6 +9149,8 @@ simplify_shift_const (x, code, result_mode, varop, input_count)
break;
count += first_count;
if (count >= GET_MODE_BITSIZE (shift_mode))
count = GET_MODE_BITSIZE (shift_mode) - 1;
varop = XEXP (varop, 0);
continue;
}
@ -9202,6 +9204,9 @@ simplify_shift_const (x, code, result_mode, varop, input_count)
else
count = signed_count;
if (count >= GET_MODE_BITSIZE (shift_mode))
count = GET_MODE_BITSIZE (shift_mode) - 1;
varop = XEXP (varop, 0);
continue;
}