diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2014-03-25 10:27:54 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2014-03-25 10:27:54 +0100 |
| commit | a8acccddfd67f1a0c6c4716700e188b1d0f1a148 (patch) | |
| tree | 0a1161c992db7af1af2107a57cc510c6a2082954 | |
| parent | 57fc74a48b0ba0cd42c26de3813569b0c43d07ac (diff) | |
| download | gcc-a8acccddfd67f1a0c6c4716700e188b1d0f1a148.zip gcc-a8acccddfd67f1a0c6c4716700e188b1d0f1a148.tar.gz gcc-a8acccddfd67f1a0c6c4716700e188b1d0f1a148.tar.bz2 | |
cselib.c (cselib_hash_rtx): Perform addition in unsigned type to avoid signed integer overflow.
* cselib.c (cselib_hash_rtx): Perform addition in unsigned
type to avoid signed integer overflow.
* explow.c (plus_constant): Likewise.
From-SVN: r208804
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cselib.c | 2 | ||||
| -rw-r--r-- | gcc/explow.c | 2 |
3 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 95e46dc..8ba19f5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-03-25 Jakub Jelinek <jakub@redhat.com> + + * cselib.c (cselib_hash_rtx): Perform addition in unsigned + type to avoid signed integer overflow. + * explow.c (plus_constant): Likewise. + 2014-03-25 Dominik Vogt <vogt@linux.vnet.ibm.com> * doc/generic.texi: Correct typos. diff --git a/gcc/cselib.c b/gcc/cselib.c index 26bcbe0..7918b2b 100644 --- a/gcc/cselib.c +++ b/gcc/cselib.c @@ -1137,7 +1137,7 @@ cselib_hash_rtx (rtx x, int create, enum machine_mode memmode) return hash ? hash : (unsigned int) ENTRY_VALUE; case CONST_INT: - hash += ((unsigned) CONST_INT << 7) + INTVAL (x); + hash += ((unsigned) CONST_INT << 7) + UINTVAL (x); return hash ? hash : (unsigned int) CONST_INT; case CONST_DOUBLE: diff --git a/gcc/explow.c b/gcc/explow.c index f4df9df..4e2f704 100644 --- a/gcc/explow.c +++ b/gcc/explow.c @@ -110,7 +110,7 @@ plus_constant (enum machine_mode mode, rtx x, HOST_WIDE_INT c) return immed_double_int_const (v, mode); } - return gen_int_mode (INTVAL (x) + c, mode); + return gen_int_mode (UINTVAL (x) + c, mode); case CONST_DOUBLE: { |