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| author | Richard Henderson <rth@cygnus.com> | 2000-08-15 23:22:20 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-08-15 23:22:20 -0700 |
| commit | 3e626beb95980cff96e1065ccff070ac27c44d6a (patch) | |
| tree | 447e48cb1b2e1020f9a51bb24a77f03a7a756c47 | |
| parent | 8e7c93fe34318458fe384035cf6b89fbb20db7d6 (diff) | |
| download | gcc-3e626beb95980cff96e1065ccff070ac27c44d6a.zip gcc-3e626beb95980cff96e1065ccff070ac27c44d6a.tar.gz gcc-3e626beb95980cff96e1065ccff070ac27c44d6a.tar.bz2 | |
combine.c (simplify_shift_const): Bound shift count when combining shifts.
* combine.c (simplify_shift_const): Bound shift count when
combining shifts.
From-SVN: r35739
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1a08964..40df92a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/combine.c b/gcc/combine.c index 4ad2f4f..e4be714 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -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; } |